Effect of Dietary Microbial Phytase on Zinc Bioavailability in Growing Pigs
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概要
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The effect of microbial phytase on zinc bioavailability in growing pigs fed a corn-soybean meal based diet was studied. Thirty three crossbred barrows aged approximately 6 weeks were used. The pigs were allotted to three groups and fed one of following diets for 6 weeks ; a basal diet containing less non-phytate phosphorus than its requirement for growing pigs, a diet supplemented with inorganic phosphorus to satisfy the requirement of non-phytate phosphorus or a diet supplemented with microbial phytase at a level of 1, 000 phytase-unit/kg diet. Adequate-P group and phytase group showed significantly higher average daily gain and tibial density than basal group. The average daily gain and tibial density did not differ between the adequate-P group and phytase group. Although zinc concentration in the tibial cortex did not differ between the basal and adequate-P groups, the phytase group showed significantly higher concentration of zinc in the tibial cortex than the other groups. These results suggested that dietary phytase improved zinc and phosphorus bioavailability in growing pigs given a corn-soybean meal based diet.
- 社団法人 日本畜産学会の論文
著者
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Yano Hideo
Graduate School Of Agriculture Kyoto University
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TAMURA Akira
Graduate School of Agriculture, Kyoto University
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MATSUI Tohru
Graduate School of Agriculture, Kyoto University
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NAKAJIMA Takashi
School of Environmental Science, The University of Shiga Prefecture
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Ashida Kin-ya
Graduate School Of Agriculture Kyoto University
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Matsui Tohru
Graduate School Of Agriculture Kyoto University
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