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Proceedings, 10 World Congress of Genetics Applied to Livestock Production Principal Components for Reproductive and Productive Traits in Buffaloes from Brazil
| Content Provider | Semantic Scholar |
|---|---|
| Author | Barros, Carlos Castilho Neto, F. R. Araújo Lourenco, Daniela Andressa Lino Hurtado-Lugo, N. A. Tonhati, Humberto |
| Copyright Year | 2014 |
| Abstract | A total of 12,450 records for first-parity in dairy buffaloes were used in this study. Analyzed traits were age at first calving, interval between first and second calving, lactation length, somatic cell count, and milk, fat, protein, lactose, and total solids yields. The covariance components were estimated through principal components models by reduced-rank with third to ninth components. Direct additive genetic and residual random effects were included in all models. The three first eigenvalues explained 94.25% of the genetic variance on average. The estimates of heritability ranged from 0.03 to 0.31. The genetic correlation of production traits had moderate to high magnitude, and reproductive traits had negative and low to moderate magnitude. According to the selection criterion, the four genetic principal components are appropriate for evaluation of economic traits for Buffaloes in Brazil. |
| File Format | PDF HTM / HTML |
| Alternate Webpage(s) | http://www.wcgalp.org/system/files/proceedings/2014/principal-components-reproductive-and-productive-traits-buffaloes-brazil.pdf |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
