AQU4601

1. Genetik dan pemulihan stok
AQU4601
Summary of Technical Report 8 on
Selective Breeding Program Feedback
PENSYARAH : DR. SHAHREZA BIN MD SHERIFF
Muhammad Ikhwan Muzammil B.Yunus S42526
Jasvir Singh a/l Raghbir Singh S44570
Shahruddin B. Mohd Nazair S44870
Nur Ilyana Bt. Abdul Rahman S43247

2. STEPS IN DESIGNING BREEDING
PROGRAM
EXPLAINATION
1) Describe the production system. The natural mating in hapas should be place in the pond.
2) the species, strains and breeding
system.
- Crucian carp (carassius auratus) at Freshwater Fisheries Research
Center, Waxi should be crossed with other strains to broaden the
genetic base and eliminate a possible inbreeding.
- Unrelated broodstock from 2-3 neighbouring farms and wild
broodstock from 3-4 populations
-The collected broodstock should be brought to Waxi for mating.
- All 100 males and 100 females from 6 different location (16-17 males
and 16-17 females from each location) will be cross mated to form
heterogeneous outbred base population for the breeding program.
- Breeding program use monoculture because polyculture will make the
testing of breeding values more complicated.
- Artificial breeding (inject female and male with pituitary gland extract
or manufactured hormone (ovaprim/ LRH-A))

3. STEPS IN DESIGNING BREEDING
PROGRAM
EXPLAINATION
3) Formulate the breeding objective. -The important features are high growth rate and high survival rate.
- Focus on growth rate in both sexes.
- Design to avoid loss of genetic variation and avoid rapid
accumulation of inbreeding.
-To result in a rate of inbreeding of less than 1% per generation.
4) Develop selection criteria. - Using a large number of breeder in each generation.
- Restricted number of progeny per pair.
- Size of the broodstock
-The colouration

4. STEPS IN DESIGNING BREEDING
PROGRAM
EXPLAINATION
5) Design system of genetic
evaluation.
- Start forming a synthetic (mixed) base population for selection from
the early beginning program.
- All mating will be strain crosses, using all possible combinations in 6
by 6 complete crossing design without pure-beds. Single pairs will be
made by stripping of eggs and milts or by natural mating in hapas.
- 23 females and 17 male from each strain should get hormone
injection.
- Each male should be mated to one female only, and each female to
one male only.
- Mating take place within 2 days.
6) Select animal and mating system. - Final selection for the fish is about 22months of age.
- Body weight and sex should be recorded for all fish.
-The 120 largest males and the 150 largest females should be stocked
separately by sex in hapas until mating.
- Fish should be sexually mature and ready to spawn.
- Final selection intensity is then expected to be about 6-8%.
- Heritability for body weight of 0.2 and a coefficient of variation of
30%.