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- Title
Effects of astragalus polysaccharide on milk production and its flavor.
- Authors
XU Liyun; JIAO Sheng; ZHENG Menghe; XU Zihao; YANG Hui; TONG Yujie; JIANG Wen; SHAO Wei
- Abstract
This experiment was to study the effects of astragalus polysaccharide on rumen fermentation, cow' s milk production performance, milk quality and flavor. Forty-four Chinese Holstein dairy cows with good physical condition, similar on body weight, milk yield, lactation days and offspring numbers were randomly divided into CK group, APS20 group, APS55 group and APS90 group. All experimental cows were fed with a diet. The experimental groups were given 20g, 55g and 90g APS liquid daily, respectively. The experiment lasted for 70 days (pre-feeding period was 10 days, normal feeding period was 60 days) . The results showed that administration of APS significantly increased acetic acid concentration (P < 0.05), propionic acid and butyric acid concentrations (P < 0.01), NH3-N concentration (P < 0.05) and MCP content (P < 0.05) in rumen. Administration of APS increased milk production, milk fat content, milk protein content, lactose content and non-milk fat solid content, but the difference was not significant. The contents of flavoring substances such as alcohols, acids and hydrocarbons in milk were significantly increased by administration of APS. Except the contents of total volatile matter, ketones, aldehydes, esters and hydrocarbons substances in APS55 group were lower than those in CK group, other parameters of the experimental groups were all increased. In conclusion, 55g/d APS feeding can improve rumen fermentation pattern and increase milk production, milk fat and protein percentage.
- Subjects
MILK yield; POLYSACCHARIDES; MILKFAT; ASTRAGALUS (Plants); FAT content of milk; MILK proteins; BUTYRIC acid
- Publication
China Food Additives, 2022, Vol 33, Issue 11, p126
- ISSN
1006-2513
- Publication type
Article
- DOI
10.19804/j.issn1006-2513.2022.11.017