Assessing the efficiency of multiplicative mixed model equations to account for heterogeneous variance across herds in carcass scan traits from beef cattle.

doi:10.2527/1997.7561477x

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Article

Assessing the efficiency of multiplicative mixed model equations to account for heterogeneous variance across herds in carcass scan traits from beef cattle.

Journal of animal science - 1 Jun 1997

Reverter A, Tier B, Johnston D J, Graser H U

Abstract excerpt

Data (n = 2,658) from live animal ultrasonic measures from 17 Angus herds were used to evaluate a multiplicative mixed model that incorporates scaling factors to correct for across-herd heterogeneity of variance. Traits included were ribeye muscle area (EMA), surface fat at the P8 site (P8), surf...

Topics

Analysis of Variance
Animals
Body Composition
Body Weight
Breeding
Cattle
Female
Genetic Variation
Male
Meat
Models, Biological
Models, Genetic
Muscle, Skeletal

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