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Articles by O.A.H. El-Ghalid
Total Records ( 1 ) for O.A.H. El-Ghalid
  O.A.H. El-Ghalid
  One hundred and eight, 3 weeks old female quails were distributed among 3 treatments to study the effect of estradiol administration, on their productive and reproductive performance. Birds of the first group were intramuscularly injected at 3 weeks of age daily with 100 μg E2/bird/day for 7 consecutive days. Birds of the second group were treated in a like manner starting from 5 weeks of age and the third group served as control. Birds injected with E2 either at 3 or 5 weeks of age had a significantly higher body weight at sexual maturity and females injected at 3 weeks of age matured significantly earlier compared to control. Egg number egg weight and egg mass had significantly increased due to E2 injection at both ages with females injected at 3 weeks of age having the highest values. Estrogen-progesterone ratio fluctuated with reverse relation to egg production. Tibia relative weight, length and calcium content were significantly increased by estrogen injection with birds injected at 5 weeks of age having the highest values. It can be concluded that treating immature Japanese quails with E2 can enhance their reproductive and productive functions and that applying the treatment earlier (3 weeks of age) has better results when compared to applying it at 5 weeks of age regarding egg production, feed conversion and calcium metabolism.
 
 
 
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