scholarly journals Effect of Fish Oil Supplement on Growth Performance, Ruminal Metabolism and Fatty Acid Composition of Longissimus Muscle in Korean Cattle

2002 ◽  
Vol 15 (1) ◽  
pp. 66-71 ◽  
Author(s):  
K. Kook ◽  
B. H. Choi ◽  
S. S. Sun ◽  
Fernando Garcia ◽  
K. H. Myung
Keyword(s):  
Fatty Acid Composition ◽  
Fatty Acid ◽  
Fish Oil ◽  
Growth Performance ◽  
Acid Composition ◽  
Longissimus Muscle ◽  
Korean Cattle

Effect of management strategy on growth performance, carcass characteristics, fatty acid composition, and palatability attributes in crossbred steers

2002 ◽  
Vol 82 (1) ◽  
pp. 49-57 ◽  
Author(s):  
F. L. Laborde ◽  
I. B. Mandell ◽  
J. J. Tosh ◽  
J. G. Buchanan-Smith ◽  
J. W. Wilton
Keyword(s):  
Fatty Acids ◽  
Fatty Acid Composition ◽  
Fatty Acid ◽  
Growth Performance ◽  
Acid Composition ◽  
Management Strategy ◽  
Management Strategies ◽  
Carcass Characteristics ◽  
Carcass Composition ◽  
Longissimus Muscle

Crossbred steers (n = 136) were used to evaluate the effect of management strategy on growth performance, carcass characteristics, and fatty acid composition and palatability attributes of beef. Management strategies included: (1) high grain (75% high moisture corn) finishing (HG), or (2) backgrounding with restricted feeding of an alfalfa silage ration for 112 d, followed by HG until slaughter (BKG). Steers were slaughtered at 8–10 mm ultrasound backfat. Backgrounding increased (P < 0.001) days on feed and decreased (P < 0.01) days on grain, average daily gain and longissimus muscle area compared with the HG regime. Slaughter weight, intramuscular fat content, and marbling score were unaffected (P > 0.10) by management strategy. Longissimus muscle palatability attributes and shear force did not differ (P > 0.10) between management strategies, whereas BKG increased (P < 0.03) softness, overall tenderness, chewiness, and rate of breakdown scores, and decreased (P < 0.09) juiciness scores in semitendinosus muscle. Backgrounding increased (P < 0.05) conjugated linoleic acid (CLA), total monounsaturated fatty acids, and 1193 polyunsaturated fatty acid (PUFA), and decreased (P < 0.05) total saturated fatty acids (SFA), and 1196 PUFA content of beef. While the change in quantitative and qualitative fatty acid composition of beef is in line with current dietary recommendations for humans, the magnitude of these changes was minimal. Key words: Beef cattle, diets, carcass composition, fatty acids, longissimus muscle, palatability attributes

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