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Economical evaluation for some productive and reproductive traits in Pekin ducks fed different levels of palm date stone meal.

Research Authors
El- Hammady,H.Y.,M. Abdelnabi, K.M.El-Ashwal,
Research Department
Research Journal
second Hungarian Egyptian international poultry conference, Institute for small animal research (KĂTKI) Gõdõllõ, Hungary, 16-19 September,1997.
Research Rank
3
Research Year
1997

Growth and feed utilization of Bouscat rabbits under upper Egypt conditions. A- Growth and feed efficiency-

Research Authors
Makled, M.N., A.M. El-Gammal and M.A. Abdelnabi
Research Department
Research Journal
Assiut J. Agri. Sci.,
Research Pages
181-189.
Research Rank
2
Research Vol
12(4) :
Research Year
1981

Growth and feed utilization of Bouscat rabbits under upper Egypt conditions. B- Developmental changes of parts and cut-up parts.

Research Authors
Makled, M.N., A. M. El-Gammal and M. A. Abdelnabi
Research Department
Research Journal
Assiut J. Agri. Sci.,
Research Pages
191-202.
Research Rank
2
Research Vol
12 (4):
Research Year
1981

Effect of calorie restriction on reproductive and adrenal systems in Japanese quail: Are responses similar to mammals particularly primates?

Research Authors
Ottinger, M. A., Mobarak M. ., M. A. Abdelnabi, G. Roth, J. Proudman, and D.K. Ingram
Research Department
Research Journal
Mechanisms of Aging and Development.
Research Pages
967-975.
Research Rank
1
Research Vol
126:
Research Year
2005

Growth parameters of M and F Egyptian geese under sub tropical conditions in Assuit.

Research Authors
El-Hammady, H.Y.; Abdelnabi, M.A.; Youssef H. S.; and Abou El-ezz. F. K.,
Research Department
Research Journal
The 4rd International Poultry Conference, Scharm El-Scheikh, Egypt, March: 27-30.
Research Rank
3
Research Year
2007

The optimum ambient temperature of Dandarawi laying hens for optimum productive and reproductive performance.

Research Abstract
A total number of one hundred and ninety eight 32 weeks old Dandarawi laying birds (180 hens and 18 cocks) at peak production until 44 weeks of age were used to evaluate some productive and reproductive performance of Dandarawi laying hens under different ambient temperatures. The birds were randomly divided into 3 groups. Each group included sixty hens and six cocks. All birds were housed in 3 floor pens. Each group was kept in an area of 10 square meters provided with deep litter of wheat straw (10 cm). The first, second and third groups were raised under 20 to 22ºC, 24 to 26ºC, and 28 to 30ºC, respectively. The obtained results could be summarized as follows: The birds of groups 1 and 2 were achieved higher (P≤0.01) final body weight (BW) by about 4.5 and 6.0 % and also higher (P≤0.01) body weight change (BWC) by about 6.6 and 9.6 %, respectively, than those in group 3, while no significant differences (P≤0.05) were observed between groups 1 and 2 in final BW and BWC. The birds in group 2 showed significantly (P≤0.01) higher hen day egg production (HDP) by 4.4 and 6.7%, hen housed egg production (HHP) by 4.4 and 8.9%, egg number (EN) by 2.2 and 3.4 eggs, and egg mass (EM) by 4.1 and 7.7% than those in groups 1 and 3, respectively, while no significant differences were observed in HDP and EN between groups 1 and 3. However, HHP and EM in group 1 increased (P≤0.01) by about 4.8 and 3.8%, respectively than those in group 3. No deaths occurred in birds of group 2 at all age periods studied, while the mortality rate was 1.7 and 6.7 % in groups 1 and 3, respectively. The group 1 showed significantly (P≤0.05) higher feed consumption by 3.1% as compared with that in group 3, while the group 2 had an intermediate value. No significant differences in cumulative feed conversion (FCR) among the three groups were detected. However, the birds of group 2 had insignificantly (P≤0.05) better cumulative FCR by about 4.5 and 6.8 % than that of groups 1 and 3, respectively. There were no significant differences among groups in egg weight, egg shape index, and egg yolk index. However, the eggs of birds in groups 1 and 2 had significantly (P≤0.01) higher Haugh units (HU) by 5.3 and 5.3% and shell thickness (ST) by 3.1 and 3.8%, respectively than those in group 3. The yolk percentage in groups 1 and 2 was significantly (P≤0.05) higher by about 2.8 and 3.6 %, respectively than that in group 3, but the albumen percentage in group 3 was significantly (P≤0.01) higher by about 1.7 and 2.2% than that in groups 1 and 2. However, no significant differences (P≤0.05) among groups were observed in shell percentage, fertility, and hatchability of total and fertile eggs percentages. But, the chick weight at hatch in group 2 was significantly (P≤0.05) higher by about 1.8% than that of group 3, while the group 1 had an intermediate value. Economic efficiency (EE) in group 2 exceeded that of groups 1 and 3 by 17 and 29%, respectively, while the EE in group 1 exceeded that of group 3 by 12%. The group 2 recorded the best EE percentage as compared with the other two groups. The recommendation of the present study is raising Dandarawi laying hens during the period from 32 to 44 weeks of age under 24 to 26ºC to obtain higher productive and reproductive performance.
Research Authors
El-Sagheer M.,
Research Department
Research Journal
Egyptian Poultry Science Journal,
Research Pages
499-520.
Research Rank
2
Research Vol
(Vol. 27, (II):
Research Year
2007
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