Effect of growth selection on morphology in Pirenaica cattle

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2006
Author
Altarriba Farrán, Juan
Varona Aguado, Luís
Moreno, Carlos
Pastor, Francisco
Yagüe, Gema
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Abstract
Twelve variables were identified to define morphology in 109 calves sired by eight Pirenaica bulls widely used in artificial insemination. The effect of selection for weight at 210 days of age (W210) was detected from the regression coefficient between the 12 variables and the selection index for
W210 used in the breeding plan. Unbiased estimates of the genetic correlated responses on the morphology were obtained without previously estimating the genetic correlation among traits. In Pirenaica cattle, selection for W210 increased slaughter live weight, chest depth and corporal length. The expected changes on height (withers, back and rump), rump width and thoracic perimeter were lower but positive and statistically significant.
URI
http://hdl.handle.net/10459.1/10993
DOI
https://doi.org/10.1051/animres:2005042
Is part of
Animal Research, 2006, vol. 55, núm. 1, p. 55-63
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