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Body and Carcass Composition of Targhee and Finn-Targhee Lambs

University of California³, Davis 95616

Abstract

The carcasses and wool free empty bodies of 15 unselected Targhee, 15 weight selected Targhee (10 years selection for heavy weaning weight), 13 Finn—Targhee and 17 Finn— Targhee lambs were chemically analyzed. Each genotype group was comprised of initial slaughter, maintenance fed and ad libitum fed animals from a comparative slaughter experiment.

Ad libitum animals were higher in fat and lower in water, protein and ash than animals from the other treatments. Maintenance animals had a higher fat content than the initial slaughter animals and on a fat-free dry matter basis they had a lower protein and higher ash content than ad libitum or initial slaughter animals.

The Finn lambs on the average had higher fat and energy and lower water, protein and ash contents than the other genotypes, while the weight selected lambs were lower in fat and energy, but higher in water, protein and ash contents than the other genotypes. Genotypes were not significantly different in any composition parameter on a fat free basis.

¹ Present address: Ruakura Animal Research Station, Hamilton, New Zealand.

² Present address: Genetics Department, University of Minnesota, St. Paul 55101.

³ Animal Science Department.