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Journal of Anhui Agricultural Sciences. 2014, (21)

Effect of Phytosterols on the Lactation Performance and Reproduction Performance of Dairy Cows in Early Lactating StageChinese Full Text

XIE Xin-mei;HE Jian-bin;College of Veterinary and Animal Science,Shenyang Agricultural University;Animal Husbandry Department of Liaoning Huishan Dairy Group;

Abstract: [Objective]The research aimed to study the effects of adding different dose of phytosterol on the production performance and reproduction performance of Holstein dairy cows in early lactating stage. [Method]16 healthy Holstein dairy cows with similar lactating stage were randomly divided into 4 groups（ I,II,III,IV groups）. The dairy cows in group I（ blank control group） were fed with the basal diet.The dairy cows in group II,III,IV group were fed with the basal diet with adding 200,400 and 800 mg /d phytosterol. The effects of adding different dose of phytosterol on the production performance and reproduction performance of dairy cows were studied. [Result]The production indices of dairy cows in group II had the most obvious changes. Compared with group I,the milk density in group II was significantly increased（ P ＜0.05）,milk acidity,the first hybridization age and non-pregnant time were significantly decreased（ P ＜0.05）. Compared with group I,milk fat,total dry matter and acidity of milk in group IV were significantly decreased（ P ＜ 0. 05）,non-fat solids content in the milk and body temperature were significantly decreased（ P ＜ 0. 05）. [Conclusion]Adding phytosterol could improve milk yield of dairy cows,promote the oestrus of dairy cows,shorten the first hybridization age and non-pregnant time and improve the physical condition. The optimum adding amount of phytosterol was 200 mg /d.
Keywords：

Phytosterol; Dairy cow; Milk; Reproduction performance; Feed additive;

  • DOI：

    10.13989/j.cnki.0517-6611.2014.21.046

  • Series：

  • Subject：

  • Classification Code：

    S823.91

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