Genetic parameters of objectionable fibers and of their associations with fleece traits in Corriedale sheep1
| Autor: | A. L. Sánchez, Hugo Naya, R. Kremer, I. Sienra, Francisco Peñagaricano, J. I. Urioste, K. Neimaur |
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| Rok vydání: | 2016 |
| Předmět: |
0301 basic medicine
Veterinary medicine 0402 animal and dairy science Total response 04 agricultural and veterinary sciences General Medicine Heritability Biology 040201 dairy & animal science Genetic correlation 03 medical and health sciences Corriedale sheep 030104 developmental biology Animal model Wool Genetics Animal Science and Zoology Flock Fiber Food Science |
| Zdroj: | Journal of Animal Science. 94:13-20 |
| ISSN: | 1525-3163 0021-8812 |
| DOI: | 10.2527/jas.2015-9619 |
| Popis: | The aim of this research was to assess the variability and genetic relationships among binary traits denoting the presence or absence of objectionable fibers, namely pigmented (BINPPF), medullated (BINPMED), and kemp fibers (BINPK), and of fleece traits (fiber diameter [FD] and clean fleece weight [CFW]) in Corriedale sheep. Additionally, the total response to selection against objectionable fibers and indirect responses when selecting for fleece traits were evaluated. Fiber records from 679 animals and fleece records from 795 animals obtained from 2 experimental flocks (from 2005 to 2007) were used; the pedigree file included a total of 3,792 animals. Heritability and genetic correlations among the traits were estimated with a multivariate animal model under a Bayesian setting. Heritability estimates (posterior SD) for BINPPF, BINPMED, and BINPK were 0.35 (0.08), 0.37 (0.10), and 0.63 (0.09), respectively; for CFW and FD, estimates were 0.42 (0.09) and 0.43 (0.08), respectively. The genetic correlations between CFW and the 3 types of objectionable fibers were very low (i.e. |
| Databáze: | OpenAIRE |
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