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Genetic improvement of Israeli blue (Jordan) tilapia, Oreochromis aureus (Steindachner), through selective breeding for harvest weight
Year:
2014
Source of publication :
Aquaculture Research
Authors :
Hulata, Gideon
;
.
Volume :
45
Co-Authors:
Zak, T., Fish Culture Research Station, Dor, Israel
Deshev, R., Fish Culture Research Station, Dor, Israel
Benet-Perlberg, A., Fish Culture Research Station, Dor, Israel
Naor, A., Fish Culture Research Station, Dor, Israel
Magen, I., Fish Culture Research Station, Dor, Israel
Shapira, Y., Fish Culture Research Station, Dor, Israel, Fish Stuff, Pardes Hanna, Israel
Ponzoni, R.W., The WorldFish Center, Bayan Lepas, Penang, Malaysia
Hulata, G., Institute of Animal Science, Agricultural Research Organization, Bet Dagan, Israel
Facilitators :
From page:
546
To page:
557
(
Total pages:
12
)
Abstract:
Genetic parameters and selection responses were obtained for harvest body weight of blue tilapia (Oreochromis aureus) from data collected over three generations in a selected population. A total of 18 194 records representing 186 sires and 201 dams were used in the analysis. Within generation heritability estimates for harvest body weight ranged from 0.18 to 0.58. When data from more than one generation were included in the analysis, heritability estimates became more stable (0.33-0.40) and it was 0.33 when all data were included in the analysis. The common full-sib effect accounted for 10% of the phenotypic variance in the full data set. Heritability for survival from stocking to harvest was estimated at 0.01 and 0.09 in actual units (fitting an animal model) and in the logit (sire model) scale respectively. The genetic correlation between harvest body weight and survival was 0.22 and not significantly different from zero. The total selection response for harvest body weight over the three generations of selection measured as the difference between least-squares means of selected and control lines was 17.7%. The corresponding figure when response was measured as the difference between mean breeding values of selected and control lines was 19.6%. The average inbreeding coefficient was 0.003 after three generations of selection. These results indicate that there are good prospects for the genetic improvement of harvest body weight in blue tilapia. © 2012 John Wiley & Sons Ltd.
Note:
Related Files :
Blue tilapia
fish
genetic engineering
harvesting
heritability
Israel
parameterization
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Related Content
More details
DOI :
10.1111/are.12072
Article number:
Affiliations:
Database:
Scopus
Publication Type:
article
;
.
Language:
English
Editors' remarks:
ID:
21549
Last updated date:
02/03/2022 17:27
Creation date:
16/04/2018 23:45
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Scientific Publication
Genetic improvement of Israeli blue (Jordan) tilapia, Oreochromis aureus (Steindachner), through selective breeding for harvest weight
45
Zak, T., Fish Culture Research Station, Dor, Israel
Deshev, R., Fish Culture Research Station, Dor, Israel
Benet-Perlberg, A., Fish Culture Research Station, Dor, Israel
Naor, A., Fish Culture Research Station, Dor, Israel
Magen, I., Fish Culture Research Station, Dor, Israel
Shapira, Y., Fish Culture Research Station, Dor, Israel, Fish Stuff, Pardes Hanna, Israel
Ponzoni, R.W., The WorldFish Center, Bayan Lepas, Penang, Malaysia
Hulata, G., Institute of Animal Science, Agricultural Research Organization, Bet Dagan, Israel
Genetic improvement of Israeli blue (Jordan) tilapia, Oreochromis aureus (Steindachner), through selective breeding for harvest weight
Genetic parameters and selection responses were obtained for harvest body weight of blue tilapia (Oreochromis aureus) from data collected over three generations in a selected population. A total of 18 194 records representing 186 sires and 201 dams were used in the analysis. Within generation heritability estimates for harvest body weight ranged from 0.18 to 0.58. When data from more than one generation were included in the analysis, heritability estimates became more stable (0.33-0.40) and it was 0.33 when all data were included in the analysis. The common full-sib effect accounted for 10% of the phenotypic variance in the full data set. Heritability for survival from stocking to harvest was estimated at 0.01 and 0.09 in actual units (fitting an animal model) and in the logit (sire model) scale respectively. The genetic correlation between harvest body weight and survival was 0.22 and not significantly different from zero. The total selection response for harvest body weight over the three generations of selection measured as the difference between least-squares means of selected and control lines was 17.7%. The corresponding figure when response was measured as the difference between mean breeding values of selected and control lines was 19.6%. The average inbreeding coefficient was 0.003 after three generations of selection. These results indicate that there are good prospects for the genetic improvement of harvest body weight in blue tilapia. © 2012 John Wiley & Sons Ltd.
Scientific Publication
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