| Author(s) |
Bunter, Kim L
Newton, J E
Brown, Daniel
|
| Publication Date |
2017
|
| Abstract |
Ewes joined to first lamb as yearlings in industry ram breeding flocks were sampled for progesterone concentration (PROG) exactly 14 days after first exposure to males. The heritability of PROG was 0.22±0.06. PROG had positive genetic (P>0.05) and phenotypic (P<0.05) correlations with yearling, but not two-year old (2yo) ewe, reproductive traits affected by fertility. Pubertal status assigned using PROG was a significant (P<0.0001) factor for yearling fertility and related traits. Systematic effects, such as birth-rear type and dam age groups influenced yearling outcomes but were generally not significant for reproductive performance of 2yo ewes.
|
| Citation |
Proceedings of the Association for the Advancement of Animal Breeding and Genetics, v.22, p. 565-568
|
| ISSN |
1328-3227
|
| Link | |
| Language |
en
|
| Publisher |
Association for the Advancement of Animal Breeding and Genetics (AAABG)
|
| Title |
Progesterone is an Indirect Indicator of Reproductive Outcomes for Yearling Ewes
|
| Type of document |
Conference Publication
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| Entity Type |
Publication
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