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Ruminant Nutrition and Forage Utilization
Asian-Australasian Journal of Animal Sciences 2008;21(10): 1458-1465.
DOI: https://doi.org/10.5713/ajas.2008.80047    Published online September 3, 2008.
Effects of Soybean Oil or Whole Cotton Seed Addition on Accumulation of Conjugated Linoleic Acid in Beef of Fattening Brahman×Thai-Native Cattle
Wisitiporn Suksombat*, Khukhuan Chullanandana
Correspondence:  Wisitiporn Suksombat,
Abstract
Effects of soybean oil or whole cotton seed addition on conjugated linoleic acid (CLA) and performance of fattening BrahmanThai-Native cattle were studied. Eighteen fattening cattle averaging 24124 kg body weight and approximately 1 year old were stratified by live weight into three groups and randomly assigned by group to one of three dietary treatments. The treatments were control (concentrated 14% crude protein), control and supplemented with 170 g/d soybean oil, control plus 170 g/d of oil from whole cotton seed. All animals were weighed before and after the experimental period and 4 cattle per treatment were randomly slaughtered then carcass measurements were obtained. There were no statistically significantly differences in the final body weight, average daily gain and dry matter intake among treatments. However, the crude protein intake was significantly decreased (p<0.01) when whole cotton seed was fed compared with control and soybean oil treatments. The carcass composition and carcass characteristics were not significantly different in Longissimus and Semimembranosus muscle by feeding soybean oil and whole cotton seed compared with the control treatment. Supplementation of soybean oil increased (p<0.01) cis-9, trans-11 CLA by 116% in Longissimus muscle and by 240% in Semimembranosus muscle. However, whole cotton seed did not increase cis-9, trans-11 CLA in both muscles. The present study successfully increased cis-9, trans-11 CLA content of muscle lipids by soybean oil but not by whole cotton seed.
Keywords: Conjugated Linoleic Acid; Fattening Cattle; Whole Cotton Seed; Soybean Oil


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