- Turkish Journal of Veterinary and Animal Sciences
- Vol: 32 Issue: 2
- Seasonal Variation of Vitamin A and Beta-Carotene Levels in Ghezel Sheep
Seasonal Variation of Vitamin A and Beta-Carotene Levels in Ghezel Sheep
Authors : Gholamreza Afshari, Ali Hasanpoor, Hadi Hagpanah
Pages : 127-129
View : 9 | Download : 6
Publication Date : 9999-12-31
Article Type : Makaleler
Abstract :The present study was conducted to investigate the variations in blood serum and hepatic levels of vitamin A and b-carotene in Ghezel sheep throughout the year. From 1000 sheep aged 1-5 years, blood and liver samples were collected before and after slaughter. The levels of vitamin A and b-carotene in both samples were determined spectrophotometrically. The results showed significant differences between summer and winter values (P < 0.05), but no differences were found between the sexes (P > 0.05). There were significant correlations between the vitamin A levels in serum and the liver (P < 0.05). Due to low levels of vitamin A and b -carotene in Ghezel sheep during the winter, supplementary feeding of vitamin A is recommended during this season.Keywords : Vitamin A, Beta-carotene, Ghezel sheep, serum, liver, spectrophotometry