Genetic parameters, heterosis, and breed effects for body condition score and mature cow weight in beef cattle

Article Agriculture, Dairy & Animal Science

Breed and heterotic effects for mature weight in beef cattle

Madeline J. Zimmermann et al.

Summary: The study aims to estimate breed and heterotic effects for mature weight (MWT) in crossbred cows. By analyzing weight-age data of 5,156 crossbred cows, significant direct heterosis effects on MWT and maternal heterosis effects on the growth rate k were observed. The findings suggest that incorporating MWT in cattle breed selection can impact overall profitability, with the Angus breed being heaviest at maturity.

JOURNAL OF ANIMAL SCIENCE (2021)

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Article Agriculture, Dairy & Animal Science

Selection strategies for beef cow size and condition

R. E. Hickson et al.

Summary: The study aimed to examine the relationship between cow weight and condition, ultimately concluding that condition score is a more effective measure for genetic improvement of cow condition. Net weight was found to be heritable and genetically correlated with cow condition score and ultrasound measures, but condition score was preferred for genetic evaluation programs.

ANIMAL PRODUCTION SCIENCE (2021)

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Article Agriculture, Dairy & Animal Science