Construction of an indoor tilapia hatchery and its facilities, module 1

Sector: AQUACULTURE

Distinctive Area of Competence and Qualifications :

SENIOR AQUACULTURE TECHNICIAN NC III

Unit of Competency: # 1

OPERATE TILAPIA HATCHERY

Module Title: # 1

Construction of an Indoor Tilapia Hatchery and Its Facilities

Institution:

Technical Education Skills and Development Authority
Region XI

Lupon School of Fisheries
Lupon, Davao Oriental



How to Use this Learner’s Guide

Welcome to the learner’s guide for the module: Construction of an Indoor Tilapia
Hatchery and Its Facilities. This learner’s guide contains training materials and activities for
you to complete.

The unit of competency “OPERATE TILAPIA HATCHERY” contains the knowledge,
skills and learning outcomes of the module. In each learning outcomes there are information
Sheets, Resources Sheets and Reference Materials for further reading to help you better
understand the required activities. Follow these activities on your own and answer the self-check
at the end of each learning outcome.

Recognition of Prior Learning (RPL)

You may have some or most of the knowledge and skills covered on the learner’s guide
because you have:

 Been working for some time.
 Already completed training in this area.

If you can demonstrate to your Instructor that you are competent in a particular skill, you
don’t have to do the same training again.

If you feel you have some of the skills, talk to your Instructor about having them formally
recognized. If you have qualification or certificates of your competency from previous training,
show it to your Instructor. If the skills you acquired are still relevant to the module, they may
become part of the evidence you can present to RPL.

At the end of this learner’s guide is al learner diary, use this diary to record important
dates jobs undertaken and other workplace events that will assist you in providing further details
to your Instructor to complete once you completed the module.

This module was prepared to help you achieve the required competency, in
“Construction of Indoor Tilapia Hatchery and Its Facilities”. This will be the source of
information for you to acquire knowledge and skills in this particular trade, with minimum
supervision or help from your Instructor. With the did of this material you will acquire the
competency independently and at your own pace.

 Talk to your Instructor and agree on how you will both organize the Training of this
unit. Read through the learning guide carefully. It is divided into sections, which
cover all the skill, and knowledge you need to successfully complete in this module.

 Work through all the information completes the activities in each section. Read
information sheets and complete the self-check. Suggested references are included to
supplement the materials provided in this module.

 Most probably your Instructor will be your supervisor manager. He/She is there to support
you and show your he correct way to do the thing. Ask for help.

 Your Instructor will tell you about the important things you need to consider when you are
completing the activities and it is important that you listen and take notes.

 You will be given plenty of opportunity to ask questions and practice on the job. Make sure
you practice your new skills during regular work shifts. This way you will improve both
your speed and memory and also your confidence.

 Talk to more experience workmates and ask for their guidance.

 Use the self-check questions at the end of each section to test your own progress.

 When you are ready, ask your Instructor to watch you perform the activities outline in the
learning guide.

 As you work through the activities, ask for written feedback on your progress Your
Instructor keep feedback on your progress. Your Instructor keeps feedback/pre-assessment
reports for this reason. When you have successfully completed each element, ask your
Instructor to mark on the reports that you are ready for the assessment.

 When you have completed this module (several modules), and feel confident that you have
had sufficient practice, your Instructor will arrange an appointment with registered assessor
to assess you. The results of your assessment will be recorded in your Competency
Achievement Record.

Qualification : Senior Aquaculture Technician NC III

Unit of Competency #1 : Operate Tilapia Hatchery

Module Title # 1 : Construction Of Indoor Hatchery And Its Facilities

Introduction:

This module contains training materials and activities for you to complete. It includes
instructions on how to construct Indoor Tilapia Hatchery and Its Facilities.

You needed to complete this module before you can construct and Indoor Tilapia
Hatchery and Install its facilities. The theory that you will gain in this module will help you
perform determining pond materials and equipment, constructing hatchery facilities, installing
life support system and egg incubator. Methods of seed production in aquaculture vary intensity
of the operation, and where developed or perfected breeding of Tilapia can be done in both
water and land based hatchery system.

Learning Outcomes:

1. Draw and set-up a complete hatchery

2. Determine pond/tank materials and equipment

3. Construct hatchery facilities

4. Install life support system

5. Fabricate egg incubator based on specification

Assessment Criteria:

1. Components of Tilapia Hatchery are identified and explained.
2. Hatchery facilities are drawn based on industry standards.
3. Pond/Tank materials are identified and selected based on then plan
4. Equipment are determined
5. Hatchery facilities are constructed according to plan
6. Personal safety is observed.
7. Life support system are identified.
8. Different parts of the system are identified
9. Identified life support systems are installed
10. Type of egg incubator is identified.
11. Egg incubator is fabricated.

Prerequisite : None

Qualification : Senior Aquaculture Technician NC III
Module Title #1 : Constructor An Indoor Tilapia Hatchery And Its

Learning Outcome #1 Facilities
: Draw And Set Up A Complete Tilapia Hatchery

Assessment Criteria:

1. Components of Tilapia Hatchery are identified and explained.

2. Hatchery facilities are drawn based on industry standards.

Definition of Terms:

1. Hatchery - a place for hatching fish to restock streams.

2. Indoor - being or done within doors, interior of the building.

3. Site - a plot of ground set apart for some specific use.

4. Quality - distinguishing elements or characteristics.

5. Quantity - the property of a thing which admits of exact measurement and
numerical statement.

6. Polyethylene - flexible thermoplastic resin.

7. Breeders - fish which produces an egg, matured fish

8. Incubators - an apparatus kept at a uniform for artificial hatching.

9. Larval - the first stage of an animal after leaving of eggs.

Resources:

1. A hatchery Manual for the common, Chinese and Indian Major Corps, V. 6
Shingram, R.S.V. Pullin, pp. 21-22

2. Technolguide on the Production of Genetically Male Tilapia (GMT), Graham C. Mair
and Tereso A. Abella pp. 39-51.

3. (AQ 122) Management of Hatcheries and Related Facilities by Leticia B. Tesorero
(ISCOF).

Tools/Accessories : Drawing Materials

Learning Experiences

Learning Outcome # 1: Draw And Set-Up A Complete Tilapia Hatchery

Learning Activities Special Instruction

Given the module, the student/trainee will
perform the following activities in the school
operated tilapia hatchery.

1. Examine site carefully as to the
characteristics on various points.

2. Determine the essentials components of a
Hatchery.

3. Identify the requirements of broodfish.

4. Analyze the importance of the different
types of tank.

5. Draw and label the different set-up of a
complete hatchery.

Information Sheet LO1

COMPONENTS OF TILAPIA HATCHERY

Component of Pond-based Systems

THE SITE
a. soil quality
b. water supply
c. risk of flooding
d. accessibility to the rood, transportation and market labor.

Pond Requirements
The requirements for pond based hatcheries are similar to those outline for hopa based

hatcheries although generally smaller ponds are preferred as being more manageable.

Extensive pond based production
The method is done in small backyard hatcheries as well as longer commercial

hatcheries. The ponds serves both for spawning and nursing. Ponds used for extensive seed
production tend to be similar to those used for grow-out , normally with a minimum water depth
of 1 meter, being deeper at one end than the other. As water is not drained frequently these
ponds often do not require to have drainage months or pipes and its is not required that they can
drained by gravity although to the breeding ponds.

Semi-intensive pond based production
This method used open ponds, smaller and shallower in dimension (usually 10x20 m and

water depth of 40 cm- 60 cm). Semi-intensive hatcheries use separate nursery ponds which are
usually similar in form to the breeding ponds.

Information Sheet LO1

TILAPIA HATCHERY PRODUCTION SYSTEM

1. Hapa based production systems

More than any other freshwater fish species,nile tilapia (Oreochronis niloticus) is gaining
in popularity for culture. Its attractiveness and acceptance to consumers has lead to an increased
demand for fingerlings.

Methods of seed production in aquaculture vary considerably with the state of
Technology as well as with the level of intensity of the operation. Land based hatchery systems
includes paddles wheels, earthen ponds and concrete tanks white water based hatcheries includes
spawning enclosures or hapas suspended in lakes, reservoir or rivers with moderate flow of
water. In hapa based production system, net enclosures are used as breeding units. Stocking
densities for broodstock can be higher than in pond based systems thereby maximizing the
utilization of available space.

Components of hapa-based system:

The site

Site selection will generally be based on the species to be cultured technology to be
employed.

Following are the important factors to consider in selecting a site:

 The soil should possess basic mineral nutrients and respond readily to organic and
inorganic fertilization.

 There should be a dependable source of perennially available water in adequate
quantity for the size of the hatchery.

 The physical and chemical properties of the water should be within acceptable limits,
although if necessary and economical, water can be further manipulated by chemical
treatment or filtration to suit aquaculture needs.

 The site is easily accessible.
 There is market in the vicinity
 Fertilizers and raw material for feeds required for aquaculture operations and

building materials for constructing the hatchery are available, preferably locally.
 There is no industrial, domestic or pesticide pollution at the site.
 There are reasonable educational and medical facilities in the vicinity of the site.

Information Sheet LO1

Placements of different ponds in farm

The location of the different ponds in a hatchery I considerable importance for ease of
operation and minimizing of operating costs. With regards to the terrain of the farm, t he lowest
portions of the farm should be designated for stock ponds. The elevated areas should be develop
into rearing ponds and areas higher still for nursery ponds. The highest area should be used for
the breeding pond.

The hatchery building should be located near the breeding pond. This will facilitate the
ease of transfer of collection, hence, reducing mortality. For stocking breeders, the conditioning
hapas are located should be placed near or adjacent to the breeding pond. Nursery and rearing
ponds should also be adjacent to each other facilitating grading and sorting of fingerlings.

Requirements of broodfish

It is an observation that the size of sexually mature individuals varies widely, depending
on both age and growing conditions. In the case of Nile tilapia breeders, under hapa based
systems, where conditioning of breeders takes place in a separate cage, sexual maturity should.
Be attained within three months after stocking of post-fingerlings. When fish are matured
spawning continuos as often as every 21 throughout the year, although there is seasonal variation
in fry production. In order to breed most tilapia as need a water temperature of at least 200C
(Hnet 1970: Bardach et. al, 1972, Balarin J Hatton 1979) other environmental factors which
should be taken into consideration are photoperiodicity and the effects of light intensity, as well
as the onset of the rainy season and water level among many others structural Features of hapa
and cage design.

Nursery Hapa

A small hapa made up of polyethylene fine mesh. Usually 1.5 m. height, rectangular in
shape and a convenient width for scooping operations. For Fry approximately 9 days old, it is
recommended that a smaller hapa ( 3mx5m) should be used. This is used to train the fry to
accept commercial feeds with the smaller areas increasing the chances for the fry to find the
feed.

Rearing Cage

Bigger cages usually measuring 3x8 m used for rearing post-fry up to fingerlings. This
cage is made up of B-net nylon mesh. Fingerlings will be grown in this cage from a minimum
size of #22 until they reach the size of #17 or #14.

Information Sheet LO1

Stock or Broadfish Hapa

Breeding hapas can be smaller than nursery hapas to enable the laborer to get easy access
to the fish inside. We recommend a size of 2.5m x 3m.

Conditioning Cage

Bigger mesh size (CC-17 or GG-14) is used for this type of cage. This cage will be used
for conditioning or resting the breeders prior to restocking them for spawning. 2 Tank based
production System.

Components of tank-based Hatchery

The site:

For this type of hatchery the site is not given much importance. The only requirement for
this type of breeding farm is the quantity of the supply of good H2O quality and the location of
the farm in relation to labor and market.

Placement of different types of Tank

In a farm, maximizing the time and minimizing the labor cost are the two major factors
that could decrease the cost of production or the operational cost.

For tank based hatcheries, the location of the different tank should be properly minimal.
Conditioning tanks are commonly located adjacent to each breeding tank. With this design,
conditioning restocking can be done easily.

Requirements of Broodfish Tanks

One major requirements of the broodfish tank is the H2O supply. Complete feeding
should be done in conditioning tanks for the breeders to maintain condition and regain any lost
weight. In a body of H2O where dissolved oxygen reaches limiting levels in fed, standing H2O

(tanks), aeration can be used to raise oxygen level. However, aeration is difficult in tanks where
fish are actually breeding so a light flow of water is recommended with the overflow screened to
prevent loss of fry.

Information Sheet LO1

 Breeding Tanks

Features of breeding tanks are simple for this system. Following are the requirements in
order to optimize production.

 Water inlet and outlet-these two structures should place opposite to each other to
allow continuous replacement of water.

 A catch basin is also necessary for each tank to allow easy collection of fingerlings
and breeders during harvest. The sizes of the tanks vary according to the area allotted
for breeding. One advantage of smaller breeding units is the ease of management.

 Conditioning Tanks

Located adjacent to the breeding tank, design very according tot he type of restocking
procedure.

Two (2) Basic Type

1. all in all out system, wherein there is a separate conditioning tank for each breeding
tank.

2. Partial method, where the best breeders from the conditioning tank are exchanged
with the worst breeders in the spawning tank.

 Nursery Tanks

Nursery tanks do not need to be large or deep. Fry require shallow areas as they favor
higher temperature for growth. Nursing fingerlings can be done in hapas installed in
tanks or directly in tanks. An tanks seed have a catch basin to avoid mortality during
draining or harvesting.

Information Sheet LO1

 Hatchery Facilities based on the Industry Standard

Self Check

Direction: True or False

1. The hatchery building should be located near the breeding tank.

2. Breeding hapas can be smaller than nursery hapas to enable the
laborer to get easy access to the fish inside.

3. Nursery tank do not need to be large or deep.

4. One major requirements of the broodfish tank is water supply.

5. Nursery and rearing ponds should also be adjacent to each other to
facilitate grading and sorting

Answer Key

1. True
2. True
3. True
4. True
5. True

Record of Achievement

Module # 1: Construction of and Indoor Tilapia Hatchey and its Facilities

Learning Outcome # 1- Draw & Set-up a complete Hatchery Completed
YES NO

Performance criteria :

1. Identify different components of tilapia

2. Examine different hatchery facilities

3. Make a plan of complete tilapia hatchery. Competen Not yet
Results t competen

t

Comments :

_______________________________________________________
_______________________________________________________
_______________________________________________________
_______________________________________________________
_______________________________________________________

Learner has satisfied the above performance criteria:

Learner’s signature : _______________________

Trainer’s signature : _______________________

Date : _______________________

Qualification : Senior Aquaculture Technician NC III

Unit of Competency #1 : Operate Tilapia Hatchery

Module Title # 1 : Constructing Of An Indoor Tilapia Hatchery And

Its Facilities

Learning Outcome #2 : Determine Pond Materials And Equipment

Assessment Criteria:

1. Pond/tank materials are identified and selected based on the plan.
2. Equipment are determined.

Definition of Terms:

1. Pond - body of water surrounded by dikes, divided into several
compartments, provided with gate where fish are cultivated.

2. Tank - Receptacle for holding water made of cement and iron sand.

3. Equipment - The rolling stock and apparatus for operating a hatchery.

4. Lay-out - Lay out for planning.

Resources:

1. A Hatchery Manual for the common carp Chinese and Indian, major carps, 0.6
Jhingsam,. RVS, Pullin pp. 27, 29,30,32, and 33.

Learning Materials : - List of Materials

- List of equipments
- Lay –out plan

- Brochures

Learning Experiences

Learning Outcome No. 2: Determine Pond Materials And Equipment

Learning Activities Special Instruction

1. Identify pond materials and
equipment.

2. Give their important functions
and uses.

Information Sheet LO2

List of Materials in Constructing a Tilapia Hatchery

Supplies and Materials:

- Gravel
- Sand
- Cement
- Tie wire
- Common nail
- Lumber
- Safety shoes
- Deform bar
- Plastic pipe
- Electrical materials
- G.I. pipe
- Regulating valve

Tools and Accessories:

- Carpentry tools
- Shovel
- Digging blade
- Mixer
- Water pail
- Bolos
- Hatching jars
- Breeding hapa (fine mesh nets)
- Larval rearing trays
- Plastic hatching container with levelers
- White plastic host
- Plastic basin/pail/bowl
- Scope net
- Plastic hosts (transparent) for siphoning

List of Equipment’s

- Incubators with complete accessories and water pump.
- Air blower with electrical wiring.
- Air blower

Information Sheet LO2

Lay-Out Plan

Self Check

Direction: Enumeration

A. Supplies and Materials

1.
2.
3.
4.
5.
6.
7.
8.
9.
10.

B. Tools and Accessories

1.
2.
3.
4.
5.
6.
7.
8.
9.
10.

Answer Key

A.

1. gravel
2. sand
3. cement
4. tie wire
5. common nails
6. lumber
7.deform bar
8.plastic pipe
9.electrical materials
10.G.I. sheets

B.

1.carpentry tools
2.shovel
3.digging blade
4.Mixer
5.water pail
6.plastic hatching container
7.plastic basin
8.scoop net
9.plastic host
10.hatching jars



Records of Achievement

Module # 1: Construction of an Indoor Tilapia Hatchery and its Facilities

Learning Outcome # 2- Determine Pond Tank Materials & Completed
Equipment YES NO

Performance criteria :

1. Based on the plan, Identify different materials to be
used

2. Determine what equipment to be installed in the Competen Not yet
hatchery. t competen

Results t

Comments :

_______________________________________________________
_______________________________________________________
_______________________________________________________
_______________________________________________________
_______________________________________________________

Learner has satisfied the above performance criteria:

Learner’s signature : _______________________

Trainer’s signature : _______________________

Date : _______________________



Qualification : Senior Aquaculture Technician NC III

Unit of Competency #1 : Operate Tilapia Hatchery

Module Title # 1 : Construct Of An Indoor Tilapia Hatchery And Its

Facilities

Learning Outcome # 3 : Construct Hatchery Facilities

Assessment Criteria:

 Hatchery Facilities are constructed according to plan.
 Personal safety is observed.

Definition of Terms:

1. Plan - A drawing showing the proportion and relation of parts of
a building, any outline sketch.

2. Breeding - Inverted mosquito nets used for breeding.

Hapa

3. Incubators - Equipment design for the incubation newly hatch eggs.

4. Lavual - The first stage of an insect/animals after leaving the egg.

5. Hapa - Inverted mosquito net made of fine mesh nets.

Resources:

1. A Hatchery Manual for the common Chinese and Indian Major Carp, v. 6. Shringam,
R.V.S. Pullin.

2. Trainor’s Training on the Orientation and Strategies for the Dissemination of Get
Excel Tilapia and Giant Freshwater Prawn Production, BFAR. CLSU.

3. Techno guide on the Production of GMT Tilapia by: Graham C. Main and Tereso A.
Abella, CLSU pp. 41-42.

Tools /Accessories : Carpentry tools , shovel, mixer, Digging blades, bolos

Supplies/Materials : Sand & Gravel, Cement, Record book, Tie Wire , Common Nail, Lumber,
Safety Shoes

Learning Materials : Lay-out plan, construction manual

Learning Experiences:

Learning Outcome No. 3 : Construct Hatchery Facilities

Learning Activities Special Instruction

The student/trainee will perform the
following activities based on the plan at the
freshwater hatchery of the school in the
designated area within the campus.

1. Prepare program of works/ Identify type  Careful use of tools & equipments during

of equipments to be used.

the actual performance must be taken into

consideration.

2. Prepare carpentry tools.

3. Prepare supplies and materials before the
construction.

4. Lay-out Plan.

5. Construct hatchery facilities.

6. Observe safety measures during the
construction.

Information Sheet LO3

Tilapia Hatchery Facilities

 Breeding Hapa

Fine mesh nets or “hapa” made of polyethylene mosquito nets are usually used in
intensive fry production in which eggs are collected from the mouth brooding females
and transferred to artificial incubators.
There are no specific measurements for a breeding hapa.
Hapas should be of size that be carried out without too much effort.

 Incubators

Incubations equipment is constantly modified to arrived at a design with high
productivity. Several types of incubators are now available commercially. There are
basically two designs for the incubation of fish eggs.

a. Up-welling /funnel type incubator the water enter through the base or Funnel shaped
incubator creating an upwelling movement of the eggs which then fall back into the
following water by gravity.

b. Down-welling /jar incubator, down welling water movement causes the eggs to be
pushed tot he side of a round bottom incubating vessels.
The important factor of any incubator design that all eggs must kept in constant
motion.

 Larval Rearing Hapas

An intermediate rearing hapa for fingerlings is needed for nursing the swim-up fry
coming from the developed fry from incubator. It is advisable to maintain these fry from
the first feeding stage up to the time they reach the size-ready for disposal in fine hapas
for ease of handling and collection and to minimize predation from the wild. This does
however increase labor costs, as these hapas need to be cleaned regularly.

Self check

Direction: Essay
1. Differentiate breeding hapa from larval rearing hapa

Records of Achievement

Module # 1: Construction of an Indoor Tilapia Hatchery and its Facilities

Learning Outcome # 2- Construct Hatchery Facilities Completed
YES NO

Performance criteria : Competen Not yet
1. Construct hatchery facilities according to plan t competen
2. Observe safety precautions
t
Results

Comments :

_______________________________________________________
_______________________________________________________
_______________________________________________________
_______________________________________________________
_______________________________________________________

Learner has satisfied the above performance criteria:

Learner’s signature : _______________________

Trainer’s signature : _______________________

Date : _______________________

Qualification : Senior Aquaculture Technician NC III

Unit of Competency #1 : Operate Tilapia Hatchery

Module Title # 1 : Construct an Indoor Tilapia Hatchery and Facilities

Learning Outcome # 4 : Install Life Support System

Assessment Criteria:

1. Life support system are identified.
2. Different parts of the system are identified.
3. Identified life support system and installed.

Definition of Terms:

1. Aeration -is essential during the entire operation in maintaining sufficient
dissolved oxygen concentration in the water.

2. Maturation -the process of ripening or coming to maturity, ripeness.

Resources:

1. Management of Hatcheries or related Facilities by Letecia B. Tesorero MFT Program
of ISCOF pp. 40-41.

Equipment : Water pump

Tools & Accessories : Aerators, air hose, air stone . safety shoes, electrical tools

Supplies & Materials : Electrical Materials PVC/ G.I pipe

Learning Materials : Installation manual

Learning Experiences:

Learning Outcome No. 4 : Install Life Support System

Learning Activities Special Instruction

The student/trainee will perform the
following activities based on the plan to
install life support system at the freshwater
indoor hatchery.

1. Differentiable the aeration systems used  Careful use of tools & equipments during

in the actual performance must be taken into

indoor hatchery consideration.

2. Identify its part of aerators

3. Install life support system of an indoor
hatchery.

Information Sheet LO4

 Design of Hatchery Support Systems

1. Water distribution system. Generally, water flows by gravity from constant head tank
through the water processing equipment and into the hatchery. The water distribution
system should be over sized to allow rapid filling of tanks PVC plastic pipe is most
commonly used.

2. Drains. Drains should be designed to accommodate at least 10 times the average water
flow. Open channel drains, covered with grating allow easy access, cleaning, and
servicing.

3. Air System. Hatchery requirements range from 1-3 m/ minute per million. Pls/month.
Since only low pressure air (15-20 kpa) is needed, regenerative blowers are most
commonly used. At least 1 unit plus a back up are needed.

4. Electrical Power Supply. Electrical power demand depends strongly on pumping
requirements and operational procedures. Main pumps and other heavy loads are best
operated with 3 phase power at 220 or 440 V.

 Design of Hatchery Production Sub-Systems

1. Maturation System – Wild caught or pond-reared broodstock are held in shallow circular
or elongated tanks. Maturation tanks should be located away from the standby power
system and other sources vibration and noise.

2. Spawning System- Gravid, mated females are removed from the maturation tanks and
placed individual circular spawning tanks. Gentle aeration is provided Typically the
female spawn during the first right. In the morning, spawning tanks are checked for
fertilized eggs.

3. Larval System – larval tanks are built from coated concrete, while fiberglass or plastic
are used for smaller tanks. Most larval rearing tanks are indoors. Aeration is by diffused
aerators or airlift pumps.

4. Overall Hatchery Water requirements – for hatcheries with large peak demand, a second
treated water constant heat/tank can be used to reduce peak flows.

Self Check

Direction: Essay
1. Why life support system is needed in a hatchery?

Record of Achievement Completed
Module # 1 No Yes

LO # 4:Install life support system
Performance criteria:
1. Identify life support system.

2. Installed life support system.
3. Observe precautionary measures.

Result
Competent / not yet Competent

Comments :

Learner has satisfied the above performance criteria
Learners’ signature : _________________________
Trainers’ signature : _________________________

Date : _________________________

Qualification : Senior Aquaculture Technician NC III

Module Title # 1 : Construction Of An Indoor Tilapia Hatchery And

Its Facilities

Learning Outcomes # 5 : Fabricate Egg Incubator Based On Specifications

Assessment Criteria:

 Types of egg incubator is identified
 Egg incubator is fabricated.

Definition of Terms:

1. Embryonic - like an embryo/ undeveloped
2. Cylinder contour-having the form or shape of a cylinder outline.
3. Conical-cone shape.

Resources:

1. A Hatchery manual for the common, Chinese and Indian Major carps by V.G.
Jhingram and R.S.B. Pullin pp. 30-34.

2. Trainor’s training on the orientation and strategies for the dissemination of GET
EXCELL TILAPIA & GIAND.

3. BFAR Artificial Incubation Model by Antonio P. Morales and Marlon A. Reyes.

Learning Experiences

Learning Outcome no. 5: Fabricate Egg Incubator Based On Specification

Learning Activities Special Instruction

1. Prepare tools and materials in
fabricating egg incubator.

2. Fabricate egg incubator based on
specification.

3. Observe safety measures.

Information Sheet LO5

 Egg Incubation

Incubating not only involves bringing the eggs through embryonic development and
hatching but also includes all management aspect and rearing of fish larvae.

 BFAR EXCEL TILAPIA ARTIFICIAL INCUBATOR
The artificial Incubator is composed of 12- units of hatchery jars which are made-up of
fiberglass. Each jars has a volume of 9 liters & supported by 6mm stainless round bars
which is installed inside a wooden fry through. The fry through is made up of ¾ marine
plywood.
The water requirements of the incubation system is supplied by a ¾ Hp submersible
pump installed at the filtrated water collecting drum beside the water filtration system.
The collected water could either be pumped to the elevated water tank, which is also
made of plastic drum or be pumped directly to the incubation system. The water supply
line is made up of ¾ blue PVC pipe that supplies water to individual hatching jars thru
3/8 control value which is extended by 3/16 heavy duty plastic hose connected by a 3/16
copper tube.

Information Sheet LO
BFAR TILAPIA ARTIFICIAL INCUBATOR

Information Sheet LO5

 Incubators or Hatching Jars

Unless the functions a hatching tank are combined with that of breeding tank, separate
hatching facilities are required in a hatchery.

The design of the jar would depend upon which type of inlet is chose. Ordinarily,
however, hatchery jars with water supply from below are more commonly used. The hatchery
jars with water supply from below can be diverse volumes and shapes. The shapes may vary
from plain cylindrical contour to a tunnel, conical or barrel shape. The material can be clear
glass or clear plastic. The volume of individual hatching jars may vary from 1 liter to 200 liter. A
one-liter jar has the capacity to hold 100,000 water hardened swollen eggs.

In a hatching jar with water supply from above, each hatching jar needs a water inlet duet
going down tot he jar bottom which must have a round shape (fig, 2.10) On hitting the bottom of
the jar, the water is reflected up into the jar creating a current in which eggs keep babbling up
and down as they develop.

 Funnel-Shaped Hatchery Devices

Soft material like nylon of canvas is used to prepare. Funnel shaped immersed type of
incubators (fig. 2.14).Which are installed in rectangular twin basins with water entering each
incubator from the bottom. The water supply line, with taps fixed on both sides, is placed on top
of the dividing wall (fig., 2.15).

Information Sheet LO5
Funnel-shape Hatchery Device

Self check

Direction: Essay
1. Discuss the functions of hatching jars incubator

Record of Achievement
Module # 1 : Construction od an indoor tilapia hatchery and its facilities

LO # 5:Fabricate egg incubator Completed
based on specification Yes No

Performance criteria:

1. Fabricate egg incubator using
indigenous materials.

2. Observe safety measures.

Result
Competent / not yet Competent

Learner has satisfied the above performance criteria
Learners’ signature: ____________________
Trainers’ signature: ____________________

Date : ____________________

Questioning / Interview

Candidate name:

Unit of Competency: Operate Tilapia Hatchery

Competency Standard: Senior Aquaculture Technician NC III

Oral/ Interview questions Satisfactory Response
Yes No

1. What would you do if you have not
selected a good site got hatchery?

2. What would you do to select a better
design for hatchery?

3. What precautionary measures you will
take when constructing a hatchery
system?

4. What would you do to install a life
support system for hatchery?

5. What are the type of egg incubator?

The candidate underpinning knowledge was: Satisfactory Not
Satisfactory

Assessor Signature: Date:
Feed back to candidate:

Acceptable Answer are:
1.
2.
3.

Assessor Signature:

Assessment Activity 1

Instruction: To show if the evidence is
Demonstrated
Demonstration:
Candidate name: Yes No N/A
Assessor name:
Date of Assessment:
Time of Assessment:
Instructions of demonstration:
Materials and Equipment:

Observation

During the demonstration of skills,
did the candidate.

1. Examine the site where the hatchery
is to be constructed.

2. Make/ draw an appointed plan for
indoor hatchery.

3. Construct indoor hatchery facilities
based on the plan.

4. Make /construct each of the ff.
hatchery facilities.
a. breeding hapa
b. Incubators
c. Larval rearing hapas

5. Install life support system.
6. Fabricate egg incubator based on

specification.
The candidate demonstration was:

Satisfactory Not
satisfactory

EVIDENCE PLAN

Competency Standard: Senior Aquaculture Technician NC III
Unit of Competency # 1:
Module Title # 1: Operate Tilapia Hatchery
Construction of an indoor Tilapia
Hatchery its Facilities

Ways in which evidence will be collected: Demonstration
Question/
The evidence must show that the candidate: Interview
Written
Examination
Report

1. Discuss the components of a hapa based system.

2. . Give the important factors in selecting site for a hapa based
hatchery.

3. Differentiate Tilapia Hatchery Facilities

4. Give the Design of hatchery support system.

Note: *Critical aspects of competency Date:
Date:
Prepared by:
Checked by:

LSF Conduct of student’s competency Document No. QAS-
QA Assessment, checking/Grading, 014-QAP-13
SYSTEM Recording and Reviewing of Results
Issued by:
Procedures
Revision No. 2