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Response of gestating gilts and starter grower finisher swine to biotin pyridoxine folacin and thiamin additions to corn soybean meal diets



Response of gestating gilts and starter grower finisher swine to biotin pyridoxine folacin and thiamin additions to corn soybean meal diets



Nutrition Reports International 28(5): 945-954



First-litter gilts and growing pigs were used in 4 experiments to measure the effect on reproduction and growth of individual additions of biotin, pyridoxine, folacin and thiamin to diets formulated with corn and soybean meal. Additions of biotin, pyridoxine, folacin and thiamin to the gestation diet were .2, 1.0, .2 and 1.0 ppm, respectively. Each female was fed 1.9 kg of diet daily. Litter size at birth and weaning was significantly increased by pyridoxine addition. Gestation weight gain was increased (P < .05) by the addition of folacin. Other reproductive criteria were not affected by the vitamin additions. In the 1st growth experiment, daily gain and feed efficiency were not improved by the addition of .2 ppm biotin or 3.0 ppm pyridoxine to the starter, grower or finisher diets. Biotin addition did not stimulate the activity of hepatic pyruvate carboxylase, a biotin-dependent enzyme. Serum glutamic-pyruvic transaminase activity was not enhanced by the addition of pyridoxine to the diet. In the 2nd growth experiment, either .5 ppm folacin or 3.0 ppm thiamin were added to starter, grower and finisher diets. Neither growth rate nor feed efficiency were improved by these additions. A 3rd experiment was conducted to further evaluate folacin addition, and, as in the 2nd growth experiment, there was no effect of the addition. With the exception of pyridoxine during gestation, the addition of biotin, pyridoxine, folacin or thiamin to swine diets formulated with corn and soybean meal is not justified.

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Accession: 006325612

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