Effects of Compound Plant Extracts on Performance, Milk Quality and Immune Function of Dairy Cows with Mastitis

SONG Jie; WANG Lifang; ZHANG Tenglong; GUO Chenyang; ZHONG Huachen; ZHANG Sanfen; HUANG Jie

doi:10.3969/j.issn.1006-267x.2020.12.026

Chinese Journal of Animal Nutrition >

2020 , Vol. 32 >Issue 12: 5724 - 5732

DOI: https://doi.org/10.3969/j.issn.1006-267x.2020.12.026

Effects of Compound Plant Extracts on Performance, Milk Quality and Immune Function of Dairy Cows with Mastitis

SONG Jie ,
WANG Lifang ,
ZHANG Tenglong ,
GUO Chenyang ,
ZHONG Huachen ,
ZHANG Sanfen ,
HUANG Jie

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1. Laboratory of Quality & Safety Risk Assessment for Agricultural Products(Hohhot), Ministry of Agriculture, Inner Mongolia Academy of Agricultural and Animal Husbandry Sciences, Hohhot 010031, China;
2. Inner Mongolia Key Laboratory of Animal Nutrition and Feed Science, College of Animal Science, Inner Mongolia Agricultural University, Hohhot 010018, China

Received date: 2020-05-09

Online published: 2020-12-07

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Abstract

The purpose of this study was to investigate the effects of compound plant extracts on the performance, milk quality and immune function of dairy cows with mastitis, so as to provide reference for the development of plant extracts and the effective prevention of mastitis in dairy cows. Ten Holstein mastitis cows with somatic cell count (SCC) > 50×10⁴ cells/mL and similar parity, body weight, lactation period and milk yield were randomly divided into two groups with five cows in each group. Cows in the control group were fed a total mixed ration; and cows in the test group were fed 0.3% compound plant extracts according to the amount of dry matter per cow per day based on total mixed ration. The experimental period was 60 days, the pre-feeding period lasted for 15 days, and the formal period lasted for 45 days. The results showed as follows: 1) on days 15, 30 and 45, the milk yield of test group was significantly higher than that of the control group (P<0.05). The milk yield of test group on day 30 was significantly higher than that of day 45 (P<0.05). 2) On day 15, the dry matter feed intake of test group was significantly higher than that of the control group (P<0.05). 3) On day 45, the milk protein percentage of test group was significantly higher than that of the control group (P<0.05). On days 30 and 45, the lactose percentage of test group was significantly higher than that of the control group (P<0.05); the lactose percentage of test group on day 30 was significantly higher than that of day 1 (P<0.05). On days 30 and 45, the non-fat milk solid content of test group was significantly higher than that of the control group (P<0.05); the non-fat milk solid content of test group on day 45 was significantly higher than that of day 1 (P<0.05). 4) On day 30, the somatic cell count of test group was significantly lower than that of the control group (P<0.05). 5) The serum interleukin-4 content of test group on day 15 was significantly higher than that of day 45 (P<0.05). In conclusion, dietary compound plant extracts can increase the milk yield and dry matter feed intake, improve the milk quality, reduce the somatic cell count and enhance the body anti-inflammatory ability of dairy cows with mastitis.

Key words： compound plant extracts; cows; mastitis; performance; milk quality; immunity

Cite this article

SONG Jie , WANG Lifang , ZHANG Tenglong , GUO Chenyang , ZHONG Huachen , ZHANG Sanfen , HUANG Jie . Effects of Compound Plant Extracts on Performance, Milk Quality and Immune Function of Dairy Cows with Mastitis[J]. Chinese Journal of Animal Nutrition, 2020 , 32(12) : 5724 -5732 . DOI: 10.3969/j.issn.1006-267x.2020.12.026

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