Functional state of insulin apparatus and growth performance in bulls fed additive of linoleic acid isomers
In growing Kholmogor bulls with initial live weight 250 kg, there was studied the effect of feed additive Luta-CLA (CLA, conjugated linoleic acid, BASF, Germany) fed during 38 days at the dose 0,1 g/kg LW/day, on blood insulin, glucose and urea, nutrient digestibility, feed and growth rate. At 1 hr after feeding CLA, insulin level in blood plasma was higher by 37% compared to control (Р=0,06, n=3). Daily LWG in treatment group was higher vs control (1482±21 and 1596±22 g respectively, Р<0,05). Metabolizable energy intake (≈ 76 MJ/d) and nutrient digestibilities were not distinguished between groups. The data obtained suggest that ameliorated growth and feed performance in bulls fed additive of CLA may be related with the effect of linoleic acid isomers on the system of hormonal regulation of biosynthesis.