Effects of supplementary bee pollen and its polysaccharides on nutrient digestibility and serum biochemical parameters in Holstein calves
Effects of supplementary bee pollen and its polysaccharides on nutrient digestibility and serum biochemical parameters in Holstein calves
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DOI：
10.1071/an14684
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发表时间：
2015-01-01
影响因子：
1.4
通讯作者：
Diao, Qi-Yu
中科院分区：
文献类型：
--
作者：
Tu, Yan;Zhang, Guo-Feng;Diao, Qi-Yu
本试验研究了在14-70日龄犊牛日粮中添加蜂花粉（BP）或蜂花粉多糖（PS）对犊牛生长性能、血清生化指标和养分表观消化率的影响。25头新生荷斯坦雌性小牛随机提供五种饮食之一（每种饮食五头小牛）：补充0（对照），10（10 BP），25（25 BP）或50 g/天（50 BP）蜂花粉或5 g/天（5 PS）蜂花粉多糖的牛奶发酵剂。试验期为56 d，测定了生长性能、养分表观消化率和血清生化指标。饲喂含BP饲料的小牛体重增加更大。添加BP或PS对犊牛DM、Ca和P的表观消化率有显著影响（P分别为0.025、0.012和0.076）。25 BP组和5 PS组的干物质表观消化率分别比对照组提高9.7%和8.2%（P = 0.007或0.019）。血清碱性磷酸酶、尿素氮、葡萄糖、总蛋白、白蛋白、总胆固醇和甘油三酯浓度无显著差异。这些结果表明，膳食补充BP在25克/天？小牛或PS，5 g/天？犊牛改善了反刍前犊牛的营养消化率。
This study investigated the effects of supplementing the diets of 14-70-day calves with dietary bee pollen (BP) or its polysaccharides (PS) on growth performance, serum biochemical parameters, and apparent nutrient digestibility. Twenty-five newborn Holstein female calves were randomly offered one of the five diets (five calves per diet): a milk replacer supplemented with 0 (Control), 10 (10BP), 25 (25BP), or 50 g/day (50BP) bee pollen, or 5 g/day (5PS) bee pollen polysaccharides. The trial lasted 56 days, during which growth performance, apparent nutrient digestibility, and serum biochemical parameters were measured. Calves fed diets with BP had a greater bodyweight gain. Supplementation with BP or PS had significant effects on the apparent digestibility of DM, Ca and P in calves (P = 0.025, 0.012, and 0.076, respectively). The apparent DM digestibility of calves from group 25BP or 5PS was increased by 9.7% or 8.2% (P = 0.007 or 0.019), respectively, compared with that in the Control group. No significant differences were observed in serum concentrations of alkaline phosphatase, urea nitrogen, glucose, total protein, albumin, total cholesterol and triglycerides. These results demonstrated that dietary supplementation of BP at 25 g/day?calf or PS at 5 g/day?calf improved nutrient digestibility in pre-ruminant calves.