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- Title
The Study of Nicarbazin Metabolism in Laying Hens.
- Authors
Hsueh, C. C.; Wang, S. Y.
- Abstract
Nicarbazin is a feed additive for poultry in Taiwan. It is used to prevent coccidiosis caused by Eimeria coccidia, but it is not allowed to be used in laying hens. Laying hens may face coccidiosis due to the grow of animal welfare that bring in more free rage farms and barn type farms. In this study, different levels of nicarbazin were added to the feed then were withdrawn after 7 days of feeding. The Nicarbazin in the liver was still detectable after two weeks in 60 ppm and 120 ppm groups. Same situation found in muscle and serum. The residual level in muscle in accordance with domestic regulations. In the 120 ppm and 5 ppm groups of the experiment, Nicarbazin was still detectable after 16 and 10 days of drug withdrawal, respectively. In conclusion, this study shows that the ban of using nicarbazin in laying hens is a reasonable strategy. It is suggested that in case of the treatment purpose, there should be at least 3 weeks withdrawal period.
- Subjects
NICARBAZIN; HENS; FEED additives; ANIMAL welfare; BLOOD serum analysis
- Publication
Journal of the Chinese Society of Animal Science, 2019, Vol 48, p245
- ISSN
0253-9187
- Publication type
Article