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- Title
Vitamin A requirements of alipochromatic ('recessive-white') and coloured canaries (Serinus canaria) during the breeding season.
- Authors
Preuss, S. E.; Bartels, T.; Schmidt, V.; Krautwald-Junghanns, M.-E.
- Abstract
Six pairs of alipochromatic (‘recessive-white’) canaries (Serinus canaria) and six pairs of coloured canaries were kept through a complete breeding cycle while being fed a diet providing 12,000 iu vitamin A/kg. The eggs of three pairs (one recessive-white and two coloured) were all unfertilised and there were only 23 hatchlings (14 recessive-white and nine coloured), of which 14 (10 recessive-white and four coloured) were alive after the first moult. However, there was no clinical, biochemical or pathological evidence that the recessive-white canaries were suffering from vitamin A deficiency or that the coloured canaries were suffering from vitamin A toxicity, suggesting that the diet met the vitamin A requirements of both groups.
- Subjects
CANARIES; VITAMIN A; VITAMIN A deficiency; SEXUAL cycle; MOLTING; CANARY breeds; SERINUS
- Publication
Veterinary Record: Journal of the British Veterinary Association, 2007, Vol 160, Issue 1, p14
- ISSN
0042-4900
- Publication type
Article
- DOI
10.1136/vr.160.1.14