Implications of curvilinear response in dairy cows with increasing level of exotic inheritance in relation to a plausible breeding strategy for cattle development

Published on Jul 30, 2018 11:51 AM

Although the most of the crossbreeding experiments, in
dairy cattle, have revealed a curvilinearity in relationship
between production and level of exotic inheritance, very
little effort has been made in studying the reasons behind
this curvilinearity. The present investigation is aimed
towards bridging this gap to a reasonable extent. The
fitness reversal and G x E interaction hypotheses of
curvilinearity are tested empirically, using military dairy
farm data. In the light of the results it is concluded that
the curvilinearity is the result of a negative correlation
between production and adaptation induced by 'fitness
reversal' and G x E interaction has nothing to do with
it. A case for developing a synthetic breed with 213
inheritance from two exotic breeds is also mooted.

Keywords: Crossbred dairy cows, curvilinear response, fitness-reversal model

Info

Year: 2001
Volume: 61
Issue: 3
Article DOI: NA
Print ISSN: 0019-5200
Online ISSN: 0975-6906

Authors

V. T. Prabhakaran

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