动物营养学报Issue(2)：389-396,8.DOI:10.3969/j.issn.1006-267x.2014.02.014
饲粮维生素D添加水平对生长獭兔生长性能、钙磷代谢、血液指标和抗氧化功能的影响
Effects of Vitamin D Supplemental Level on Growth Performance, Calcium and Phosphorus Metabolism, Blood Indices and Antioxidant Function of Growing Rex Rabbits
摘要
Abstract
This experiment was conducted to study the effects of vitamin D supplemental level on growth per-formance, calcium ( Ca) and phosphorus ( P) metabolism, blood indices and antioxidant function of growing Rex rabbits.Two hundred 3-month-old Rex rabbits with an average body weight of (1.45 ±0.03) kg were randomly assigned to 5 groups with 40 replicates in each group and each replicate contained 1 rabbit.Rabbits in the 5 groups were fed experimental diets with the vitamin D supplemental levels of 0 ( control group), 500, 1 000, 2 000 and 4 000 IU/kg, respectively.There was a pretrial period of 7 days followed by an experimen-tal period of 53 days.The results showed as follows:vitamin D supplemental level did not significantly affect the average daily intake (ADI), average daily gain (ADG) and feed/gain (F/G) (P>0.05), and the high-est ADG was found in 2 000 IU/kg group.Vitamin D supplemental level did not significantly affect serum Ca and P contents, fecal P content and shin P content ( P>0 .05 ) .The fecal Ca content in 2 000 IU/kg group was significantly lower than that in 0 , 500 and 4 000 IU/kg groups ( P <0 .05 ) , and shin Ca content in 2 000 IU/kg group was significantly higher than that in 0, 500 and 1 000 IU/kg groups (P<0.01).Vitamin D supplemental level did not significantly affect the apparent digestibility of Ca and P ( P>0 .05 ) , but with the increase of vitamin D supplemental level, the apparent digestibility of Ca and P showed a trend of first rise and then decrease, and the highest value was found in 2 000 IU/kg group.Vitamin D supplemental level did not significantly affect serum alkaline phosphatase ( ALP) activity and the contents of triglyceride ( TG) , choles-terol (CHO), high density lipoprotein cholestorol (HDL-C), low density lipoprotein cholestorol (LDL-C) and parathyroid hormone (PTH) (P>0.05).Serum total protein (TP), albumin (ALB), calcitonin (CT) and vitamin D3 contents in 2 000 IU/kg group were the highest and significantly higher than those in the control group (P<0.05).Serum glutathione peroxidase (GSH-Px) activity in 2 000 IU/kg group was significantly higher than that in control group and 500 IU/kg group ( P<0 .01 ) , serum total superoxide dismutase ( T-SOD) activity in 1 000, 2 000 and 4 000 IU/kg groups was significantly higher than that in control group and 500 IU/kg group (P<0.01), liver GSH-Px activity in 2 000 IU/kg group was significantly higher than that in other 4 groups ( P<0 .01 ) , and liver T-SOD activity in 2 000 IU/kg group was significantly higher than that in control group ( P<0 .05 ) .Vitamin D supplemental level did not significantly affect serum and liver malondialdehyde (MDA) content and liver total antioxidant capability (T-AOC) (P>0.05).Considering all measured indices of this experiment, the appropriate vitamin D supplemental level in the diet of growing Rex rabbits is 2 000 IU/kg.关键词
维生素D/生长獭兔/生长性能/钙磷代谢/血液指标/抗氧化功能Key words
vitamin D/growing Rex rabbit/growth performance/calcium and phosphorus metabolism/blood indices/antioxidant function分类
农业科技引用本文复制引用
李万佳,李福昌,朱晓强,付朝晖,张彩霞..饲粮维生素D添加水平对生长獭兔生长性能、钙磷代谢、血液指标和抗氧化功能的影响[J].动物营养学报,2014,(2):389-396,8.基金项目
现代农业产业技术体系建设专项（CARS-44-B-1）；国家公益性行业（农业）科研专项 （）
