The Relative Bioavailability of Mn Sources in Weaned Piglets |
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Authors: | WEI Mao-lian YANG Wei-ren YANG Zai-bin JIANG Shu-zhen ZHANG Gui-guo WANG Gong-ying |
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Institution: | 1. College of Animal Science and Technology, Shandong Agricultural University, Tai'an 271000, China;2. CJ International Trading Co., Ltd., Jinan Branch, Jinan 250000, China |
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Abstract: | The objective of this study was to determine the bioavailability of organic Mn (Mn-Gly and Mn-AA) relative to inorganic source (MnSO4·H2O) in weaned piglets.A total of two hundreds and twenty-four post-weaning piglets (Duroc×Landrace×Yorkshire) with (9.67±0.13)kg body weight were randomly allotted to seven treatments (eight piglets per replicate).3×2 two factors completely random design was used with two levels of added Mn (20, 40 mg/kg) and three Mn sources (Mn-Gly, Mn-AA and Mn sulfate), and a control group with no added Mn was included.The experimental phase was 35 days, including 7 days adaption.The results showed that the growth performance, Mn-SOD activity, Mn content in serum, heart, kidney and pancreas were not significantly affected by Mn sources or Mn sources×Mn levels interaction (P>0.05).However, the liver and bone Mn contents were significantly affected by Mn source and Mn level (P<0.05).Based on slope ratios from multiple linear regression between Mn contents in liver and metatarsal bone and dietary supplemental Mn intake, the relative bioavailabilities of Mn-Gly and Mn-AA were 125.95% and 112.79% for liver Mn content and 133.08% and 119.25% for metatarsal bone Mn content compared to 100% of Mn sulfate, respectively, indicating that the bioavailabilities of Mn-Gly and Mn-AA were significantly higher than Mn sulfate (P<0.05), but there were no significant differences between Mn-Gly and Mn-AA (P>0.10). |
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Keywords: | Mn sources bioavailability weaned piglets |
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