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Journal of Animal Science, Vol 68, Issue 12 4060-4068, Copyright © 1990 by American Society of Animal Science

JOURNAL ARTICLE

Performance of Hereford and two-breed rotational crosses of Hereford with Angus and Simmental cattle: II. Carcass traits of steers

D. M. Marshall, M. D. Monfore, W. J. Costello and C. A. Dinkel
South Dakota State University, Brookings 57007.

Calf carcass traits were evaluated for Simmental (S) x Hereford (H) and Angus (A) x H crosses in two-breed rotations and for straightbred H. Data were grouped into seven dam breed categories: straightbred Hereford (H), F1 S x H cows (SH), S x H cows of low percentage H (SHS), S x H cows of high percentage H (HSH), F1 A x H cows (AH), A x H cows of low percentage H (AHA) and A x H cows of high percentage H (HAH). Straightbred H and crossbred SH, AH, SHS and AHA cows were mated to H bulls, HSH cows were mated to S bulls and HAH cows were mated to A bulls. Calves from the S x H rotation produced heavier carcasses with less fat, lower quality grade, larger longissimus area and increased estimated cutability compared to A x H calves. Some significant intergenerational differences were observed within rotations, particularly within S x H. Calves from HSH cows mated to S bulls produced carcasses with less fat cover, lower quality grade, larger longissimus muscle area and higher estimated cutability compared to calves from SHS dams mated to H bulls. Within both rotations, evaluation of carcass weight per day of age indicated that postweaning ADG was lower for generations for which H was the sire breed. Carcass traits of calves from SHS, HSH, AHA and HAH dam breed groups from the last 3 yr of the study when calves were fed under two different postweaning management systems were evaluated in a separate analysis.(ABSTRACT TRUNCATED AT 250 WORDS)


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C. D. Reinhardt, W. D. Busby, and L. R. Corah
Relationship of various incoming cattle traits with feedlot performance and carcass traits
J Anim Sci, September 1, 2009; 87(9): 3030 - 3042.
[Abstract] [Full Text] [PDF]


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Copyright © 1990 by the American Society of Animal Science.