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首页> 外文期刊>Veterinary World >Effect of yeast cell wall supplementation on production performances and blood biochemical indices of dairy cows in different lactation periods
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Effect of yeast cell wall supplementation on production performances and blood biochemical indices of dairy cows in different lactation periods

机译：补充酵母细胞壁对不同泌乳期奶牛生产性能和血液生化指标的影响

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Aim: This experiment was conducted to determine the effect of yeast cell wall (YCW) supplementation on production performances and blood biochemical indices such as liver enzyme activities, energy metabolites, and electrolyte concentrations of dairy cows in different lactation periods (LP). Materials and Methods: Thirty-two lactating Holstein cows were assigned into 2×2 factorial arrangement, in which the factors were the treatment (TM) (control [n=16] vs. YCW [n=16]) and the LP (early lactation [n=14] vs. mid-lactation [n=18]). The cows with day in milk (DIM) 120 (179±5 DIM) were assumed as mid-lactating cows. The YCW (SafMannan; Phileo, Lesaffre Animal Care, France) was used as the dietary supplement (10 g/cow/day) in this experiment. The statistical analysis of the data was performed by the two-way analysis of variance using the general linear model procedure to determine the main effects (TM and LP) and their interaction (TM×LP) on production performances and blood biochemical parameters of experimental cows. Results: No significant effects (p0.05) of YCW supplementation on production performances and blood biochemical indices of cows in TM groups (control vs. YCW) were observed; however, some obvious effects were detected in LP (early- and mid-lactation). Milk and milk component yield of cows in early lactation were significantly higher (p0.05) with the YCW supplementation. The higher level (p0.05) of serum albumin was found in mid-lactating cows after YCW supplementation. Before the experiment, the higher (p0.05) non-esterified fatty acid (NEFA) and NEFA/total cholesterol (T-Cho) ratio, and the lower (p0.05) calcium (Ca) concentration were observed in early lactating cows comparison with mid-lactating cows; however, there were not different after YCW supplementation. Conclusion: The positive effects of YCW supplementation on milk and milk component yields, energy metabolite, especially NEFA and NEFA/T-Cho ratio and Ca concentration were observed in early lactating cows rather than mid-lactating cows.
机译：目的：进行该实验以确定补充酵母细胞壁（YCW）对不同泌乳期（LP）奶牛的生产性能和血液生化指标（如肝酶活性，能量代谢产物和电解质浓度）的影响。材料与方法：将32头泌乳荷斯坦奶牛分成2×2因子排列，其中因子为治疗（TM）（对照[n = 16]与YCW [n = 16]）和LP（早期哺乳期[n = 14]与哺乳中期[n = 18]）。假定每日泌乳量为120（179±5 DIM）的母牛为泌乳中期的母牛。在该实验中，使用YCW（SafMannan;法国Lesaffre Animal Care的Peoeo）作为膳食补充剂（10 g /牛/天）。使用常规线性模型程序通过方差的双向分析对数据进行统计分析，以确定对实验母牛的生产性能和血液生化参数的主要影响（TM和LP）及其相互作用（TM×LP） 。结果：在TM组（对照vs. YCW）中，观察到补充YCW对奶牛的生产性能和血液生化指标没有显着影响（p> 0.05）;然而，在LP中检测到一些明显的作用（早期和中期泌乳）。补充YCW后，泌乳初期奶牛的牛奶和奶成分产量显着更高（p0.05）。补充YCW后，在泌乳中期的母牛中血清白蛋白水平较高（p <0.05）。在实验前，早期泌乳母牛的非酯化脂肪酸（NEFA）和NEFA /总胆固醇（T-Cho）比率较高（p <0.05），而钙（Ca）浓度较低（p <0.05）与泌乳中期母牛的比较;然而，补充YCW后并没有什么不同。结论：在泌乳早期的母牛而非泌乳中期的母牛中，补充YCW对牛奶和牛奶成分产量，能量代谢产物，尤其是NEFA和NEFA / T-Cho比以及Ca浓度具有积极作用。

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