Effects of Dietary Supplementation of Yeast β-Glucan on Performance, Serum Biochemical Indices and Antioxidant Capacity of Transition Dairy Cows
GU Kuntao1, ZHAO Liansheng2, WANG Liuxiang3, BU Dengpan2,4,5, LIU Ning1, WANG Jianping1
1. College of Animal and Technology, Henan University of Science and Technology, Luoyang 471023, China;
2. State Key Laboratory of Animal Nutrition, Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing 100193, China;
3. Lesaffre Management Co., Ltd., Shanghai 200235, China;
4. Chinese Academy of Agricultural Sciences and World Agroforestry Center Joint Lab on Agroforestry and Sustainable Animal Husbandry, Beijing 100193, China;
5. Hunan Co-Innovation Center of Animal Production Safety, Changsha 410128, China
Abstract：The objective of this study was to evaluate the effects of dietary supplementation of yeast β-glucan on performance, serum biochemical indices and antioxidant capacity of transition dairy cows. Forty Holstein cows with similar body condition score (3.63±0.06), parity (2.88±0.05), milk yield of the last parity[(36.86±1.06) kg/d] and expected parturition date[(28±1) d] were assigned to 2 groups with 20 cows per group in a completely randomized design. Cows in control group were fed a basal diet, and those in experimental group were fed the basal diet supplemented with 10 g/(head·d) yeast β-glucan. The experiment lasted for 49 days with a pretrial period of 7 days and a trial period of 42 days. The results showed as follows:1) dietary supplementation of yeast β-glucan significantly improved postpartum dry matter intake, milk yield and milk protein yield (P<0.05), but had no significant effects on yield and percentage of the other milk composition (P>0.05); 2) dietary supplementation of yeast β-glucan significantly improved postpartum serum glucose (GLU) content (P<0.05), significantly decreased postpartum serum nonesterified fatty acid (NEFA) content was significantly decreased (P<0.05), and tended to increase postpartum serum total protein content (P=0.06), but had no significant effects on prepartum and postpartum serum contents of albumin (ALB), haptoglobin (Hp), C-reactive protein (CRP) and amyloid A (AA) (P>0.05); 3) dietary supplementation of yeast β-glucan significantly improved prepartum and postpartum serum glutathione peroxidase activity (P<0.05), and tended to decrease prepartum serum malondialdehyde content (P=0.05), but had no significant effects on serum total antioxidant capacity and superoxide dismutase activity (P>0.05). These results indicate that dietary supplementation of yeast β-glucan can improve postpartum dry matter intake, milk yield, milk protein yield, increase postpartum serum GLU content and antioxidant capacity, decrease postpartum serum NEFA content.
顾鲲涛, 赵连生, 王留香, 卜登攀, 刘宁, 王建平. 饲粮中添加酵母β-葡聚糖对围产期奶牛生产性能、血清生化指标及抗氧化能力的影响[J]. 动物营养学报, 2018, 30(6): 2164-2171.
GU Kuntao, ZHAO Liansheng, WANG Liuxiang, BU Dengpan, LIU Ning, WANG Jianping. Effects of Dietary Supplementation of Yeast β-Glucan on Performance, Serum Biochemical Indices and Antioxidant Capacity of Transition Dairy Cows. Chinese Journal of Animal Nutrition, 2018, 30(6): 2164-2171.
