EFFECTS OF PREGNANT MARE SERUM GON.AJDOTROPIN ON EGG PRODUCTION AND SOME BLOOD HORMONES OF FAYOUMI CHICKENS | ||
| Journal of Animal and Poultry Production | ||
| Article 9, Volume 28, Issue 5, May 2003, Pages 3445-3452 PDF (541.32 K) | ||
| Document Type: Original Article | ||
| DOI: 10.21608/jappmu.2003.244154 | ||
| Author | ||
| Nematallah G. M. Ali, | ||
| Department of Poultry Production, Faculty of Agricultu~e, Ain Shams University | ||
| Abstract | ||
| One hundred and twenty Fayoumi pullets at 20 weeks of a e were used to study the effect of pregnant mare serum gonadotropin (PMSG) on egg production and some related blood serum hormones. Pullets were randomly dividedi inlo four equal groups Pullets of all groups were housed in fleer pens: and food and water were offered ad lib tum. Birds were fed a diet contained 14% crude protein, 2880 Kcal ME/Kg diet, 3.7% calcium and 0.66% total phosphorous. The experiment strarted from 20 weeks and extended up to 35 weeks of age. Birds of group 1 served as control (which were injected ith 2ml saline solution/bird) at weeks 20 and 30, Those of groups 2 and 3 were subcuteonuosly injected with 75 IU of PMSG /bird/day for four consecutive days at weeks 20 and 30, respectively. While those of group 4 were twice injected at weeks 20 a~p 30. Obtained results Indicate thaI PMSG injection improved (~ < 0.05) egg production (number and weight) and feed conversion. Moreover, the injection reduced (P < 0.05) the level of triiodothyronine (T3) in blood serum. While it 'ncreased (P < 0.05) serum progesterone (P.). estradiol (E2), and T4rrJ ratio. H wever, serum thyroxin (T.) level was not affected by treatment. According to the obtained results it could be concluded that PMSG injection might have a useful effect on egg production of low producer birds when injected slightly before sexual maturity. | ||
| Keywords | ||
| Pregnanl mare serum gonadotropin; egg production; tyroid function; ovarian hormones | ||
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