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ROLE OF VITAMIN E IN IMPROVING SOME OF SEMEN CHARACTERISTICS OF ADVANCED AGE WHITE LEGHORN COCKS REARED UNDER HIGH TEMPERATURE | ||
| iraqi poultry sciences journal | ||
| Article 1, Volume 2, Issue 2, 2007, Pages 123-133 | ||
| Authors | ||
| D.H. Al-Hassani; A.M. Al-Hakeem | ||
| Abstract | ||
| Fourty White Leghorn cocks, 57 week old, were randomly allocated to 5 equal treatment groups. Birds were housed in individual cages inside room. Birds were provided water and diet ad libitum and 16 hours light/day. Average room temperature and relative humidity were 34.8˚C and 49.7% respectively. Vitamin E was supplemented to drinking water in different concentrations; 0, 50, 100, 250 and 500 mg/1liter water which represent treatments; T1 (control), T2, T3, T4 and T5 respectively. Cocks treated with vitamin E revealed highly significant (P<0.01) increase in semen volume, massive and individual motility and sperm concentration, also a highly significant (P<0.01) decrease in abnormal sperms in comparison with control group, whereas pH was not affected. Results exhibited that vitamin E supplementation to drinking water had ameliorated the studied characteristics in advanced age cocks exposed to heat stress. T5 (500 mg vit. E/1 liter water) had the best results. | ||
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