China Dairy ›› 2024, Vol. 0 ›› Issue (9): 51-55.doi: 10.12377/1671-4393.24.09.09

• FEEDING MANAGEMENT • Previous Articles     Next Articles

Effects of Plant Extracts on Feed Intake,Milk Production Performance and Serum Biochemical Indicators of Mid-to-Late Lactating Cows

JIA Chunwang1, JIANG Xiangjun2,*, ZHANG Yanwei3, ZHANG Qi1, WANG Ying1, ZHANG Jian3, YANG Feifei4   

  1. 1Jiangsu Dongxin Farm Co.,Ltd.,Lianyungang Jiangsu 222248;
    2Lianyungang Livestock and Veterinary Station,Lianyungang Jiangsu 222001;
    3Jiangsu Agricultural Reclamation Group Co.,Ltd.,Nanjing Jiangsu 210095;
    4Lianyungang Agricultural Information Center,Lianyungang Jiangsu 222001;
    5Lianyungang Biotechnology Vocational School,Lianyungang Jiangsu 222000
  • Online:2024-09-25 Published:2024-09-30

Abstract: [Objective]To study the biological functions of tea polyphenols and phytosterol complexes and their effects on feed intake,milk production performance and serum biochemical indicators of mid-to-late lactating cows. [Method]Sixty healthy cows with similar age,parity,lactation time and milk yield were randomly divided into 2 groups,with 30 cows in each group. The control group was fed a basic diet,and the experimental group was fed a basal diet supplemented with 20 g/d plant extracts. The pre-trial period lasted for 7 days and the experimental period lasted for 70 days. Milk and blood samples were collected and milk composition and serum biochemical indicators were determined. [Result]Dry matter intake decreased by 0.51 kg/d and milk yield increased by 0.85 kg/d in experimental group(P>0.05). Serum triglycerides in experimental group decreased by 45.6% compared with control group(P<0.05). Compared with control group,serum prolactin and growth hormone in experimental group were significantly increased(P<0.05). [Conclusion]Supplementing 20 g/d tea polyphenols and phytosterol complexes can improve milk production efficiency,fat metabolism and productivity of cows.

Key words: plant extract, cow, production performance, biochemical indicator

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