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Details for article 1 of 7 found articles
| Title: |
Bull Selection in MOET Nucleus Breeding Schemes with Limited Testing Capacity |
| Author: |
Stranden, I. Korpiaho, P. Pakula, M. Mantysaari, E. A. |
| Appeared in: |
Acta agriculturae Scandinavica. Section A, Animal science |
| Paging: | Volume 51 (2001) nr. 4 pages 235-245 |
| Year: |
2001-12-01 |
| Contents: |
Centralized multiple ovulation and embryo transfer (MOET) nucleus breeding schemes with limited testing capacity were compared with a conventional artificial insemination (AI) scheme using a simulation. The donor cows were selected after their first lactation. In the hybrid MOET schemes, bulls were progeny tested in the AI population. In comparison, two other schemes used nucleus-born adult bulls only. The best hybrid scheme gave 77% or 40% better genetic response in milk protein yield than that estimated in the national AI scheme when the assumed genetic progress in the AI scheme was low or high, respectively. The best scheme had acceptable coefficients of variation of genetic response, although the rate of inbreeding was 2.5 times higher than in the national AI scheme. The schemes using adult bulls had lower responses and higher rates of inbreeding than the hybrid schemes. The outstanding performance of the hybrid schemes was due to more successful cow selection path than in a conventional AI scheme. A high accuracy of selection of bulls was also important. |
| Publisher: |
Taylor & Francis |
| Source file: |
Elektronische Wetenschappelijke Tijdschriften |
Details for article 1 of 7 found articles
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