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Asian-Australas J Anim Sci > Volume 10(6); 1997 > Article
Animal Products
Asian-Australasian Journal of Animal Sciences 1997;10(6): 567-570.
DOI: https://doi.org/10.5713/ajas.1997.567    Published online December 1, 1997.
Response to selection for milk yield and length in buffaloes
M. S. Khan
Abstract
A multiple trait animal model having milk yield and lactation length was used to estimate genetic parameters using data from four institutional herds and four field recording centers. Response to selection for milk yield alone and in combination with lactation length was estimated by using principles of genetic theory. Lactation records (n = 2,353) adjusted for age at calving to 60 months were utilized. Milk yield was 17% heritable with repeatability of 0.44. Lactation length gad a low heritability of 0.06 with repeatability of 0.16. Genetic correlation between the two traits was 0.70. Selection response in milk yield can be improved slightly (103.8 vs 102.8 kg) when information on covariance with lactation length is used together with the information on milk yield.
Keywords: Selection; Milk Yield; Lactation Length; Buffaloes


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