Effects of Enzyme-Phytosterol Complex on Performance and Serum Indices of Lactating Dairy Cows

HU Tianqin; HAN Zhaoyu; WANG Qun; TANG Bo; XIE Wenchang

doi:10.3969/j.issn.1006-267x.2014.01.031

Chinese Journal of Animal Nutrition >

2014 , Vol. 26 >Issue 1: 236 - 244

DOI: https://doi.org/10.3969/j.issn.1006-267x.2014.01.031

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Effects of Enzyme-Phytosterol Complex on Performance and Serum Indices of Lactating Dairy Cows

HU Tianqin ,
HAN Zhaoyu ,
WANG Qun ,
TANG Bo ,
XIE Wenchang

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1. College of Animal Science and Technology, Nanjing Agricultural University, Nanjing 210095, China;
2. Qinghai Animal Husbandry and Veterinary College, Xining 812100, China

Received date: 2013-07-09

Online published: 2013-12-24

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Abstract

This experiment was conduct to study the effects of enzyme-phytosterol complex on performance and serum indices of lactating dairy cows. In a 4×4 Latin square experiment design, sixteen lactating Holstein dairy cows were randomly allocated into four groups with four cows per group. There were four periods in the experiment and each period lasted for 28 d. The concentrate supplements of cows in the four groups were supplemented with 0 (control group), 0.1% (trial group Ⅰ), 0.2% (trial group Ⅱ) and 0.5% (trial group Ⅲ) enzyme-phytosterol complex, respectively. The results showed as follows: compared with the control group, the milk yield and lactose percentage in trial groups Ⅰ and Ⅱ were increased (P>0.05), while the milk yield was decreased in trial group Ⅲ (P>0.05). The milk somatic cell count was decreased in three trial groups, and the difference was significant between trial group Ⅰ and control group (P<0.05). Serum glucose content in trial group Ⅱ was higher than that in control group (P>0.05), and significantly higher than that in trial group Ⅲ (P<0.05). Serum glutathione peroxidase activity in trial groups Ⅱ and Ⅲ was higher than that in control group (P>0.05), and significantly higher than that in trial group Ⅰ (P<0.05). Serum lipoprotein lipase activity in trial group Ⅰ was significantly higher than that in trial group Ⅲ (P<0.05), but no significant difference was found in that between trial group Ⅰ and control group (P>0.05). Serum immunoglobulin G level in trial group Ⅲ was significantly higher than that in control group (P<0.05), and extremely significantly higher than that in trial group Ⅰ (P<0.01). The results indicate that the enzyme-phytosterol complex supplemented into the diet has an effect to improve the milk yield and lactose percentage, reduce the milk somatic cell count, and improve the body oxidation and immune capacity of lactating dairy cows under this experiment conditions.

Key words： enzyme; phytosterol; complex; lactating dairy cows; performance; serum indices

Cite this article

HU Tianqin , HAN Zhaoyu , WANG Qun , TANG Bo , XIE Wenchang . Effects of Enzyme-Phytosterol Complex on Performance and Serum Indices of Lactating Dairy Cows[J]. Chinese Journal of Animal Nutrition, 2014 , 26(1) : 236 -244 . DOI: 10.3969/j.issn.1006-267x.2014.01.031

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