We found a match
Your institution may have access to this item. Find your institution then sign in to continue.
- Title
Validation of genomic prediction for milk yield for Holstein cattle in Taiwan.
- Authors
Chao, C. H.; Chen, J. Y.; Lee, K. H.; Wang, S. H.; Lin, T. Y.
- Abstract
The correlation between genomically-enhanced predicted milk transmitting ability (gPTAM) and the first milk yield (305, 2X, ME) was conducted to verify whether gPTAM can accurately predict actual milk yield in Holstein cattle in Taiwan. Four hundred and eighty-six dairy cows from 17 farms were used as experimental animals. The coefficient of determination is 0.1345, and the correlation coefficient is 0.37 (P < 0.0001), which is similar to the results of previous studies conducted in the United States. The coefficient of determination for the 17 herds ranged from -0.28 to 0.49, and the correlation coefficient ranged from -0.53 to 0.7 gPTAM were used to rank and assign animals to quartiles (genetic groups: worst 25%, 26 - 50%, 51 - 75%, and best 25%). The average first milk yield performance of the above four herds was 8,297 (± 1478), 8,707 (± 1617), 9,213 (± 1603) and 10,006 (± 1725) kg, respectively. Significant differences were observed between quartiles for milk production (P < 0.0001). It showed that the gPTA of genetic testing can be used as a breeding tool for selecting the elite dairy cows. With proper management, it will help increase the profitability of the herd.
- Subjects
HOLSTEIN-Friesian cattle; MILK yield; CATTLE genetics; ANIMAL herds; CATTLE breeding; GENETIC testing
- Publication
Journal of the Chinese Society of Animal Science, 2021, Vol 50, p54
- ISSN
0253-9187
- Publication type
Article