In contrast to the adult gut, the immature intestine is refractory to subcutaneously infused insulin-like growth factor I (IGF-I). IGF binding protein (IGFBP) mRNA expression was characterized in intestinal tissues from 6-, 19-, and 90-day-old rats to determine if changes in local expression could account for this age-related change in IGF-I potency. For all age groups, IGFBP-3 to -6, but not I...

Riboflavin deficiency in weanling rats causes a metabolic disorder characterized by failure to oxidize fatty acids. The disorder is similar to that seen in several human diseases, some of which are responsive to pharmacological doses of riboflavin. Previous analysis of the riboflavin-deficient rat has shown that the failure of fatty acid oxidation is due to a decrease in the activity of the acy...

I . The effect of vitamin E on the metabolism, utilization and storage of vitamin A has been studied in the rat. 2. Male weanling rats were given a vitamin A-deficient, vitamin E-deficient diet until growth had ceased for 3 days, and each rat was then given 50 i.u. vitamin A palmitate. The rats were divided into four groups and given the diet with the addition of 10 % methyl oleate or 10 yo cod...

Adenovirus 2 (Ad2) inactivated by UV was used to transform LSH hamster embryo cells. Evaluation of transformed cell lines produced by Ad2 (prototype strain adenoid 6) or isolates of Ad2 obtained from children in Washington, D. C., or West Bengal, India, showed that 13 of 15 lines induced tumors when injected into newborn inbred LSH or randomly bred NIH ham sters [1o@cells/hamster with a median ...

Five experiments were conducted to evaluate the effects of a high-protein, whey protein product (WPP; 73% CP, 6.8% lysine, 12.8% fat, and 5% lactose) and spray-dried animal plasma (SDAP) on growth performance of weanling pigs. In all experiments, pigs were fed experimental diets from d 0 to 14 after weaning in a pelleted form and then a common diet in meal form for the remainder of the experime...

We conducted two experiments to study the effects of pelleting and pellet conditioning temperature on weanling pig performance. In Exp. 1, 252 weanling pigs (PIC, L326 x C22) averaging 6.0 +/- 1.3 kg and 21 +/- 3 d of age were used to evaluate six corn-soybean meal-based diets containing 15% dried whey and formulated to contain 1.4% lysine. Treatments consisted of a control diet without spray-d...

Mateo, C. D. and Stein, H. H. 2007. Apparent and standardized ileal digestibility of amino acids in yeast extract and spray dried plasma protein by weanling pigs. Can. J. Anim. Sci. 87: 381–383. The objective of this experiment was to measure the apparent (AID) and standardized (SID) ileal digestibility of crude protein (CP) and amino acids (AA) in yeast extract and spray dried plasma protein (...