تأثير استخدام فيتامين A و حامض الفوليك في بعض الصفات الإنتاجية و التناسلية و بعض الهرمونات للفطائم العواسية المحلية

الملخص EN

This study was conducted at Animal Resourse Department \ College of Agriculture and Forestry at Mosul University for a period from 9 / 6 / 2009 to 6 / 10 / 2009, to study the effect of vit.

A, Folic acid and the Co- effect for both of them on some physiological and reproductive traits for local Awassi ewe lambs 36 ewe lambs 4 month old were used in this study randomly divided into 4 treatments with average weights 22.22, 22.88, 23.27 and 22.00 kg respectively.

The first treatment fed on the control ration, the second drunk with vit A 5000 I.U \ head twice a week, the third drunk with folic acid 25 mg \ head twice a week, and the fourth treatment was drunk with vit A 5000 I.U with 25 mg \ head twice a week all the experiment period.

The result revealed significant difference (P < 0.05) between the treatments in the average daily and total gain for the behalf of the control treatment, and there were no significant difference in final weight between the treatments, but there was a progress on improvement in fertility percentage for the third treatment reached 66.66 % at 8th month of ewe lambs age.

At 10th month of age the third and forth treatment were highly significantly superior (P > 0.01) then the first and second treatment and reached 77.77 %.

There was no significant difference in F.S.H hormone level at 7, 9, 10 month of age.

There was significant difference (P> 0.05) for the 3rd treatment at 7 months of age, the level of F.S.H reached 0.3170 nonogram \ ml with comparison with 1st and 2nd treatments.

Also there were significant differences (P > 0.05) in L.H hormone level between the treatments within the 7th month for the behalf of 3rd treatment and 8th month for the behalf of 2nd and 3rd treatments.

The treatments with Vit.

A and folic acid led to a significant increase (P > 0.05) level of Progesterone hormone at 10th month of age for the 3rd and 4th treatments compared with 1st and 2nd over.