title: Nutritive value of acetate in growing pigs.
abstract: Twelve crossbred barrows from four litters (average initial body weight of 21 kg) were used to examine the nutritive value of acetate in growing pigs. The treatments were the addition of acetate in the form of triacetin to the basal diet at 0, 5 and 10% of the metabolizable energy (ME) intake. Metabolism tests were conducted during wk 1 and 4 on acetate. The responses of weight gain and N retention to increasing levels of acetate were linear (P less than .001). Efficiency of acetate utilization for body weight gain was .90 g/g acetate, and the mean N-sparing effect of acetate was 32.9 mg N/g acetate. In the liver, heart and femoral muscle examined from d 36 to 47 on acetate, there was a linear increase in RNA content (P less than .05) and in protein content (P less than .01), as the level of acetate intake was increased. Digestible energy and N-corrected ME (MEn) of acetate found in the first week on acetate were not different from its heat of combustion. Those found in the fourth week on acetate, however, were larger (P less than .05) than the heat of combustion. It was considered that a nutritional adaptation to acetate utilization, or a synergistic action of acetate with other energy sources, occurred. The energetic efficiency of acetate utilization for growth was estimated to be 56 to 59%.
mesh_terms: D000085:Acetates / Q000378:metabolism*; D019342:Acetic Acid; D000818:Animals; D001835:Body Weight; D004032:Diet; D004734:Energy Metabolism; D005232:Fatty Acids, Volatile / Q000378:metabolism; D007420:Intestine, Large / Q000378:metabolism; D008297:Male; D009584:Nitrogen / Q000378:metabolism; D009753:Nutritive Value; D013552:Swine / Q000254:growth & development* / Q000378:metabolism
chemical_list: D000085:Acetates; D005232:Fatty Acids, Volatile; D009584:Nitrogen; D019342:Acetic Acid