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- Title
Effects of dietary supplementation of biotin and organic zinc on locomotion score and milking performance of Holstein lactating cows under high temperature-humidity index.
- Authors
Chang, C. T.; Shiao, T. F.; Lin, C. Y.; Lee, C. F.; Wu, L. T.
- Abstract
The purpose of this study was to evaluate the effects of dietary supplementation of biotin and organic zinc on locomotion score and milking performance of Holstein lactating cows under high temperature-humidity index. A total of 24 Holstein lactating cows were assigned into two groups according to their body weight, milk yield, parity and days in milk. Cows received diets containing 0 (control) and 10 mg biotin and 180mg organic zinc (treatment) a day per head for 90 days. The results showed that the average temperature and humidity index (THI) was 75.2 ± 1.1 units. Dietary supplementation of biotin and organic zinc could help retard locomotion score and increase milk production of daily cow. Milk composition was no significant difference between the treatments. From the above results, it is trendy to supplement biotin and organic zinc in diets under high temperature-humidity index could help improve cow's hoof health and milk production.
- Subjects
FEED additives; BIOTIN; ANIMAL locomotion; BODY weight; MILK yield
- Publication
Journal of the Chinese Society of Animal Science, 2019, Vol 48, p346
- ISSN
0253-9187
- Publication type
Article