SONGKLANAKARIN JOURNAL OF SCIENCE & TECHNOLOGY

Volume 42, No. 01, Month JANUARY, Year 2020, Pages 123 - 131

Effect of rumen-protected rice bran oil on carcass quality and fatty acid profile of beef from crossbred wagyu steers

Rattakorn Mirattanaphra and Wisitiporn Suksombat

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The effect of rumen-protected rice bran oil (RP-RO) supplementation on performance and fatty acid content of crossbred Wagyu beef steers was determined. Twelve crossbred Wagyu beef steers, that averaged 509±3.2 kg live weight and 28 months old, were stratified by their live weight into 3 groups. All steers were fed 7.5 kg/d of 14% crude protein concentrate with ad libitum rice straw and had free access to clean water. The treatments were: 1) control concentrate; 2) supplemented with 100 g/d of RP-RO (100 RP-RO); and 3) supplemented with 200 g/d of RP-RO (200 RP-RO). This present study demonstrated that supplementation of RP-RO did not influence dry matter and crude protein intakes, live weight changes, carcass and muscle characteristics, and sensory or physical properties. RP-RO increased C18:1n-9 and beef marbling scores. Based on the results from the present study, it can be recommended that the addition of 200 g/d RP-RO can increase C18:1n-9 and the beef marbling score.

Keywords

rumen protected fat, rice bran oil, carcass quality, fatty acids, Wagyu beef steers

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