HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS		QUICK SEARCH:   [advanced] Author: Keyword(s): Year:  Vol:  Page:

This Article Full Text (PDF) Alert me when this article is cited Alert me if a correction is posted Services Similar articles in this journal Alert me to new issues of the journal Download to citation manager Citing Articles Citing Articles via HighWire Citing Articles via Google Scholar Google Scholar Articles by Koch, R. M. Articles by Cundiff, L. V. Search for Related Content PubMed Articles by Koch, R. M. Articles by Cundiff, L. V.

Individual and Maternal Genetic Effects for Beef Carcass Traits of Breeds Representing Diverse Biological Types (Cycle I)¹

University of Nebraska, Lincoln 68583 , Kansas State University, Manhattan 66506 and US Department of Agriculture, Clay Center, NE 68933

Abstract

Individual (g¹) and maternal (g^M) average genetic effects and individual (h¹) and maternal (h^M) heterosis effects for carcass characteristics of Angus, Hereford, Jersey, South Devon, Limousin, Simmental and Charolais were estimated from crosses sired by these breeds and from Angus and Hereford dams. First cross (F₁) progeny (N = 1,120) and the steer and heifer progeny of F₁ dams (N = 1,204) were used in the analyses. There was significantly more variation among breeds associated with g¹ than with g^M. Individual heterosis effects were significant for all traits except intramuscular and kidney fat. Maternal heterosis was significant for carcass weight and carcass composition. The sum of g¹ and g^M, which corresponds to expected differences among purebreds, differed significantly. Angus and Hereford were similar for all traits, except the greater intramuscular fat of Angus, and were characterized by below average final and carcass weights and percentages of retail product and bone, but were above average in fat cover, intramuscular fat and fat trim. Jersey had the lowest final and carcass weights and percentage of retail product of the breeds evaluated, and below average bone, was intermediate in fat cover, but had the greatest amount of intramuscular and kidney fat. Charolais and Simmental did not differ sinificantly for any trait and were characterized by having high final and carcass weights, retail product and bone percentages and low fat cover, intramuscular fat and fat trim. Limousin had final and carcass weights that were similar to Angus and Hereford, but intramuscular fat and carcass composition that were similar to Charolais. South Devon tended to rank between the averages of Charolais. South Devon tended to rank between the averages of Charolais and Simmental and of Angus and Hereford.

¹ Published as Paper No. 6927 Journal Ser., Nebraska Agr. Exp. Sta., Lincoln and Contribution No. 82-649-J, Dept. of Anim. Sci. and Ind., Kansas Agr. Exp. Sta., Manhattan.

² Anim. Sci. Dept., Univ. of Nebraska, Roman L. Hruska U. S. Meat Animal Research Center, Clay Center 68933.

³ Dept. of Anim. Sci. and Ind., Kansas State Univ., Manhattan 66506.

⁴ Visiting scientist from Institute Anim. Breed. and Anim. Prod. Technol., Warsaw Agricultural Univ., Poland.

⁵ Roman L. Hruska U.S. Meat Animal Research Center, ARS, USDA, Clay Center, NE.

This article has been cited by other articles:

				E. Casas and L. V. Cundiff Postweaning growth and carcass traits in crossbred cattle from Hereford, Angus, Norwegian Red, Swedish Red and White, Friesian, and Wagyu maternal grandsires J Anim Sci, February 1, 2006; 84(2): 305 - 310. [Abstract] [Full Text] [PDF]