Abstract
McClureet al. (1934) were apparently the first workers to investigate the effect of thiamine deficiency on the efficiency of energy metabolism. Working with rats, these investigators reported that a vitamin B supplement added to a vitamin B deficient diet had no effect on improving the efficiency of metabolizable energy (ME) utilization. In contrast, Voris (1937) showed that the efficiency of ME utilization decreased by about 12 percent when rats were thiamine deficient.More recently Sibbald et al. (1961) reported data in which four levels of pantothenic acid, 5.6, 6.8, 14.8 and 28.8 mg. per pound of feed, were fed to chicks. The three lower levels had no effect upon energy metabolism whereas the highest level depressed the efficiency of ME utilization. Sibbald et al. (1962) reported on the effects of riboflavin, niacin, vitamin B12 and methionine as related to the efficiency of ME utilization. The basal diet used in …
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