China Animal Husbandry and Veterinary Medicine ›› 2023, Vol. 50 ›› Issue (10): 4070-4076.doi: 10.16431/j.cnki.1671-7236.2023.10.020

• Nutrition and Feed • Previous Articles     Next Articles

Effects of Tea Polyphenols on Performance,Serum Biochemical and Antioxidant Indexes in Dairy Cows During Late Perinatal Period

QI Yunxia1, WU Tao1, HU Xiaomiao1, LIU Wei2, ZHU Honglong1, HAN Rongwei3, YANG Yongxin3, CHENG Guanglong1, ZHAO Xiaowei1   

  1. 1. Anhui Key Laboratory of Livestock and Poultry Product Safety Engineering, Institute of Animal Husbandry and Veterinary Medicine, Anhui Academy of Agricultural Sciences, Hefei 230031, China;
    2. Animal Disease Prevention and Control Center of Guzhen, Bengbu 233700, China;
    3. College of Food Science and Engineering, Qingdao Agricultural University, Qingdao 266109, China
  • Received:2023-04-17 Online:2023-10-05 Published:2023-09-26

Abstract: 【Objective】 The objective of this study was to evaluate the effects of dietary supplementation of tea polyphenols on performance,serum biochemical and antioxidant indexes of dairy cows in late perinatal period.【Method】 Thirty-six Chinese Holstein cows with similar parity and expected perinatal period (28 days before delivery) were randomly divided into 3 groups,control group,tea polyphenol group 1 (TP1) and tea polyphenol group 2 (TP2),with 12 cows in each group.Cows in control group were fed a basal diet,and cows in TP1 and TP2 groups were fed the basal diet supplemented with 15 and 30 g/cow of tea polyphenols per day,respectively.The pre-trial period lasted for 7 days and the experimental period lasted for 42 days.After the experiment,milk and blood samples were collected to determine milk composition and serum biochemical and antioxidant indexes.【Result】 Compared with control group,milk fat yield in TP1 and TP2 groups was significantly increased (P<0.05),milk fat percentage and total solid content in TP2 group were significantly increased (P<0.05).The total antioxidant capacity (T-AOC) in TP2 group was significantly increased,and the activities of glutathione peroxidase (GSH-Px),superoxide dismutase (SOD) and catalase (CAT) were significantly increased (P<0.05).In addition,milk fat percentage,total solids content,T-AOC,GSH-Px,SOD and CAT activities in TP2 group were significantly higher than those in TP1 group (P<0.05).【Conclusion】 Dietary supplementation of tea polyphenols could increase postpartum milk fat yield,milk fat percentage and total solid content,and increase serum T-AOC,SOD,CAT and GSH-Px activities in late perinatal period.In this experiment,adding 30 g/cow of tea polyphenols had the best effect.

Key words: tea polyphenols; late perinatal period; performance; biochemical indexes; antioxidant indexes

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