Conjugated linoleic acids content in M.longissimus dorsi of Hanwoo steers fed a concentrate supplemented with soybean oil, sodium bicarbonate-based monensin, fish oil.
We hypothesized that increasing ruminal pH would lead to enrichment of adipose tissue with conjugated linoleic acid (CLA). Twenty-four Korean native (Hanwoo) steers were used to investigate the additive effects of monensin (30ppm, SO-BM) and/or fish oil (0.7%, SO-BMF) in the diets along with soybean oil (7%) and sodium bicarbonate (0.5%, SO-B) on cis-9, trans-11 and trans-10, cis-12 CLAs in adipose tissue. The steers were assigned to randomly four groups of six animals each based on body weight. The control group (CON) was fed a commercial concentrate for the late fattening stage. Supplementation of oil and sodium bicarbonate reduced feed intake and daily gain, and fish oil further decreased feed intake (P<0.001) and daily gain (P<0.087) compared to steers fed other diets. Total CLA and CLA isomers in M.longissimus dorsi were not affected when steers were fed SO-B and SO-BM diets compared with those of steers fed CON and SO-BMF diets. However, total poly unsaturated fatty acids were higher (P=0.03) in steers fed SO than in CON steers.
Song
M K
MK
Department of Animal Science, Chungbuk National University, Cheong-Ju 361-763, Republic of Korea.
Jin
G L
GL
Ji
B J
BJ
Chang
S S
SS
Jeong
J
J
Smith
S B
SB
Choi
S H
SH
D000821:Animal Feed / Q000032:analysis; D000824:Animal Nutritional Physiological Phenomena; D000818:Animals; D002417:Cattle; D004032:Diet / Q000662:veterinary; D019587:Dietary Supplements; D005395:Fish Oils / Q000737:chemistry / Q000494:pharmacology*; D044243:Linoleic Acids, Conjugated / Q000737:chemistry*; D008297:Male; D008985:Monensin / Q000737:chemistry / Q000494:pharmacology*; D018482:Muscle, Skeletal / Q000737:chemistry*; D017693:Sodium Bicarbonate / Q000737:chemistry / Q000494:pharmacology*; D013024:Soybean Oil
D005395:Fish Oils; D044243:Linoleic Acids, Conjugated; D013024:Soybean Oil; D017693:Sodium Bicarbonate; D008985:Monensin