J. Anim Sci.
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J. Anim Sci. 1983. 56:858-866.
© 1983 American Society of Animal Science
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Nutritive Value of Acetate in Growing Pigs1

S. Imoto2 and S. Namioka3

Hokkaido University,4, Sapporo, 060, Japan

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<.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<.05) and in protein content (P<.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<.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%.

Footnotes

1 This research was supported by Grant-in-Aid for Scientific Research (Grant No. 356211) from the ministry of Education, Science and Culture, Japan.

2 Present address: San-Haitsu 3, Hiragishi 1-7-2, Toyohira-ku, Sapporo, 062, Japan.

3 The authors are indebted to Mr. H. Yamai, Drs. Y. Satoh and H. Murata, and Mr. and Mrs. Yaguchi for their technical assistance.

4 Dept. of Vet. Internal Med., Faculty of Vet. Med.






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Copyright © 1983 by the American Society of Animal Science.