Inbreeding depression on production and reproduction traits of buffaloes from Brazil
- 3 December 2012
- journal article
- research article
- Published by Wiley in Animal Science Journal
- Vol. 84 (4), 289-295
- https://doi.org/10.1111/asj.12006
Abstract
The objective of this study was to evaluate the influence of inbreeding depression on traits of buffaloes from Brazil. Specifically, the traits studied were body weight at 205 and 365 days of age, average daily gain from birth to 205 days (ADG_205), average daily gain between 205 and 365 days (ADG205_365) in Mediterranean buffaloes, and milk yield, lactation length, age of first calving and calving intervals in Murrah buffaloes. Inbreeding effects on the traits were determined by fitting four regression models (linear, quadratic, exponential and Michaelis-Menten) about the errors generated by the animal model. The linear model was only significant (P < 0.05) for growth traits (exception of ADG205_365). The exponential and Michaelis-Menten models were significant (P < 0.01) for all the studied traits while the quadratic model was not significant (P > 0.05) for any of the traits. Weight at 205 and 365 days of age decreased 0.25 kg and 0.39 kg per 1% of increase in inbreeding, respectively. The inbred animals (F = 0.25) produced less milk than non-inbred individuals: 50.4 kg of milk. Moreover, calving interval increased 0.164 days per 1% of increase in inbreeding. Interestingly, inbreeding had a positive effect on age at first calving and lactation length, decreasing age of first calving and increasing lactation length.Keywords
This publication has 20 references indexed in Scilit:
- Variabilidade genética de búfalos em rebanho-núcleo com base na análise de pedigreeArquivo Brasileiro de Medicina Veterinária e Zootecnia, 2010
- The genetics of inbreeding depressionNature Reviews Genetics, 2009
- Inbreeding depression on beef cattle traits: Estimates, linearity of effects and heterogeneity among sire-familiesGenetics Selection Evolution, 2008
- Melhoramento e estrutura populacional em bubalinos da raça Mediterrâneo no BrasilPesquisa Agropecuária Brasileira, 2008
- Parâmetros e tendências da produção de leite em bubalinos da raça Murrah no BrasilRevista Brasileira de Zootecnia, 2007
- Inbreeding and its effect on some productive traits in buffaloes of South IranItalian Journal of Animal Science, 2007
- Inbreeding and it is effects on some productive and reproductive traits in a herd of Egyptian buffaloesItalian Journal of Animal Science, 2007
- Caracterização fenotípica e genética da produção de leite e do intervalo entre partos em bubalinos da raça MurrahPesquisa Agropecuária Brasileira, 2006
- A test of quantitative genetic theory using Drosophila– effects of inbreeding and rate of inbreeding on heritabilities and variance componentsJournal of Evolutionary Biology, 2005
- Computing inbreeding coefficients in large populationsGenetics Selection Evolution, 1992