饲粮维生素A添加水平对7～12月龄梅花鹿生长性能、血清生化指标及初角茸生长的影响

发布时间：2018-11-27 10:11

【摘要】：本试验旨在研究饲粮维生素A添加水平对7~12月龄梅花鹿生长性能、血清生化指标及初角茸生长的影响。选取40只7月龄平均体重为(39.64±4.10)kg的健康雄性梅花鹿,随机分成4组,每组10个重复,每个重复1只,分别饲喂在基础饲粮(含5 mg/kgβ-胡萝卜素)中添加0(对照组)、2 500、5 000和10 000IU/kg维生素A的试验饲粮。试验期从7月龄开始至12月龄结束。结果表明:1)饲粮维生素A添加水平对梅花鹿生长性能无显著性影响(P0.05)。2)与对照组相比,饲粮添加2 500、5 000IU/kg维生素A显著提高梅花鹿血清免疫球蛋白A(IgA)含量、总超氧化物歧化酶(T-SOD)活性(P0.05),饲粮添加2 500、5 000、10 000IU/kg维生素A显著提高谷胱甘肽过氧化物酶(GSH-Px)活性(P0.05),饲粮维生素A添加水平对血清免疫球蛋白G(IgG)、免疫球蛋白M(IgM)、丙二醛(MDA)、睾酮(T)及雌二醇(E2)含量无显著性影响(P0.05)。3)5 000IU/kg维生素A添加组初角茸干茸重显著高于对照组(P0.05),但与其他2组差异不显著(P0.05)。由此得出,在本试验条件下,适量添加维生素A能够增强7~12月龄梅花鹿免疫和抗氧化功能,提高初角茸干茸重。7~12月龄梅花鹿饲喂以玉米和苜蓿草粉为主的饲粮时,饲粮维生素A适宜添加水平为2 500~5 000IU/kg。
[Abstract]:The purpose of this experiment was to study the effects of dietary vitamin A supplementation on growth performance, serum biochemical index and primary horn antler growth of Sika deer at the age of 7 ~ 12 months. 40 healthy male sika deer with an average weight of (39.64 卤4.10) kg at 7 months old were randomly divided into 4 groups, 10 replicates in each group and 1 repeats in each group. The experimental diets were fed with 0 (control group), 2 500,5 000 and 10 000IU/kg vitamin A supplementation to basal diet (including 5 mg/kg 尾 -carotene). The trial period was from 7 months to 12 months old. The results showed that: 1) the dietary vitamin A supplementation level had no significant effect on the growth performance of sika deer (P0.05). Dietary supplementation of 2 500 000IU/kg vitamin A significantly increased serum immunoglobulin A (IgA) content and total superoxide dismutase (T-SOD) activity (P0.05). Dietary vitamin A increased glutathione peroxidase (GSH-Px) activity significantly (P0.05), and dietary vitamin A supplementation increased serum immunoglobulin G (IgG), immunoglobulin M (IgM), (M (IgM),). The contents of malondialdehyde (MDA), testosterone (T) and estradiol (E 2) had no significant effect (P0.05). 5 000IU/kg vitamin A supplementation group had significantly higher dry antler weight than the control group (P0.05). But there was no significant difference between the two groups (P0.05). It was concluded that, under the experimental conditions, proper vitamin A supplementation could enhance the immune and antioxidation function of 7 ~ 12 month old sika deer, and increase the dry antler weight of the first horn antler. 7 ~ 12 months old sika deer was fed with corn and alfalfa meal as the main diet. The optimum dietary vitamin A supplementation level was 2 500 ~ 5 000 IU / kg.
【作者单位】：中国农业科学院特产研究所吉林省特种经济动物分子生物学省部共建实验室;
【基金】：中国农业科学院科技创新工程吉林省重大科技攻关专项(20140203018NY)
【分类号】：S825.5

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