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Breed differences and heterosis in triacylglycerol fatty acid composition of bovine adipose tissue

Citation

Malau-Aduli, AEO and Siebert, BD and Bottema, CDK and Pitchford, WS, Breed differences and heterosis in triacylglycerol fatty acid composition of bovine adipose tissue, Journal of Animal Physiology and Animal Nutrition , 83, (2) pp. 106-112. ISSN 0931-2439 (2000) [Refereed Article]

DOI: doi:10.1046/j.1439-0396.2000.00257.x

Abstract

Subcutaneous adipose tissues were biopsied in purebred Jersey (n = 17), purebred Limousin (n = 17) and reciprocal F 1 Jersey x Limousin crossbred (n = 33) calves at the age of 9-10 months. Triacylglycerol fatty acids were extracted and analysed for sex and breed differences. Heterosis, additive and maternal variances were estimated. All calves were pasturefed in a single management group and biopsied from the same anatomical site. Heifer calves had significantly higher proportions of palmitoleate, total mono-unsaturated fatty acids, desaturation index and lower stearate than steer calves. Significant breed differences were observed in that Limousin calves had the highest proportions of palmitate and total saturated fatty acids, whereas Jersey calves had the most palmitoleate and desaturation index. Dominance effects were evident in the proportions of palmitate, stearate, desaturation and elongation enzyme indices due to the observed highly significant heterosis effect. Myristate, palmitate and total saturated fatty acids were considered heritable due to the observed highly significant additive genetic effect.

Item Details

Item Type:Refereed Article
Research Division:Agricultural and Veterinary Sciences
Research Group:Animal Production
Research Field:Animal Breeding
Objective Division:Animal Production and Animal Primary Products
Objective Group:Other Animal Production and Animal Primary Products
Objective Field:Animal Production and Animal Primary Products not elsewhere classified
Author:Malau-Aduli, AEO (Associate Professor Aduli Malau-Aduli)
ID Code:29546
Year Published:2000
Web of Science® Times Cited:7
Deposited By:Agricultural Science
Deposited On:2004-07-23
Last Modified:2009-11-23
Downloads:0

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