Linear and Curvilinear Effects of Inbreeding on Production Traits for Walloon Holstein Cows From: Journal of Dairy Science | Date: January 1, 2007| Author: Et al; Gillon, A; Hammami, H; Mayeres, P; Croquet, C | Copyright American Dairy Science Association Jan 2007. Provided by ProQuest LLC.Copyright information

ABSTRACT

The nonlinear effects of inbreeding were studied by comparing linear and curvilinear regression models of phenotypic performances on inbreeding coefficients for production traits (milk, fat, and protein yields) of Hoistein cows in their first lactation. Three different regression models (linear, quadratic, and cubic) were introduced separately into a single-trait, single-lactation, random regression test-day model. The significance of the different regression coefficients was ...

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