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https://hdl.handle.net/1959.11/23460| Title: | Progesterone is an Indirect Indicator of Reproductive Outcomes for Yearling Ewes | Contributor(s): | Bunter, Kim L (author) ; Newton, J E (author); Brown, Daniel (author) |
Publication Date: | 2017 | Open Access: | Yes | Handle Link: | https://hdl.handle.net/1959.11/23460 | Open Access Link: | http://www.aaabg.org/aaabghome/fullproc22.php |
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. | Publication Type: | Conference Publication | Conference Details: | AAABG 2017: 22nd Conference of the Association for the Advancement of Animal Breeding and Genetics, Townsville, Australia, 2nd - 5th July, 2017 | Source of Publication: | Proceedings of the Association for the Advancement of Animal Breeding and Genetics, v.22, p. 565-568 | Publisher: | Association for the Advancement of Animal Breeding and Genetics (AAABG) | Place of Publication: | Armidale, Australia | ISSN: | 1328-3227 | Fields of Research (FoR) 2008: | 070201 Animal Breeding | Fields of Research (FoR) 2020: | 300305 Animal reproduction and breeding | Socio-Economic Objective (SEO) 2008: | 830311 Sheep - Wool 830310 Sheep - Meat |
Socio-Economic Objective (SEO) 2020: | 100413 Sheep for wool 100412 Sheep for meat |
Peer Reviewed: | Yes | HERDC Category Description: | E1 Refereed Scholarly Conference Publication | Publisher/associated links: | http://www.aaabg.org/aaabghome/ |
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| Appears in Collections: | Animal Genetics and Breeding Unit (AGBU) Conference Publication |
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