Genetic evaluation of Alpine goats using different milk control intervals

Show simple item record Silva, F.G. Torres, R.A. Brito, L.F. Silva, L.P. Menezes, G.R.O. Brito, L.C. Euclydes, R.F. Rodrigues, M.T. 2017-11-08T15:28:23Z 2017-11-08T15:28:23Z 2013-07-24
dc.identifier.issn 16765680
dc.description.abstract The objective of this study was to compare the results of genetic evaluations by using different milk control intervals to reduce the cost of milk yield controls without harming the quality of genetic evaluation of the animals. We analyzed test day milk yield data from the Goat Sector of Universidade Federal de Viçosa. After editing and checking for errors in the database, there were 20,710 records of test day milk yield for the 667 first lactations of Alpine goats, constituting the complete file, with 7-day control intervals. Information on specific weeks was excluded from the complete file to create files with data on control intervals of 15, 21, and 28 days. The RENPED program was used to recode the pedigree and data files and correct pedigree errors; the WOMBAT program was used for genetic evaluations of the 4 files. The following comparison criteria of analysis results were used: logarithm of the function of the restricted maximum likelihood, length of the analyses in seconds, Pearson and Spearman correlations, and common elimination percentage among the areas below the regression curve of the genetic values of the animals. Overall, it is recommended that a 7-day interval among milk controls should be used in breeding programs and farms with a high technical level. Intervals of 14 and 21 days can achieve satisfactory results combined with a lower data collection cost for farms with an average-to-low technical level, less effective size, and genetic variability that depend on external genetic material for genetic improvement. en
dc.format pdf pt-BR
dc.language.iso eng pt-BR
dc.publisher Genetics and Molecular Research pt-BR
dc.relation.ispartofseries vol.12, n.3, p.2455-2464, July 2013 pt-BR
dc.rights Open Access pt-BR
dc.subject Percentage of in common disposal pt-BR
dc.subject Legendre polynomials pt-BR
dc.subject Spearman correlation pt-BR
dc.title Genetic evaluation of Alpine goats using different milk control intervals en
dc.type Artigo pt-BR

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    Artigos Técnico-científicos na área de Zootecnia

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