AN ADECUATE DIETARY CRUDE PROTEIN LEVEL FOR LOCAL MAMOURAH LAYING HENS | ||||
| Journal of Animal and Poultry Production | ||||
| Article 19, Volume 30, Issue 12, December 2005, Page 7535-7546 PDF (3.76 MB) | ||||
| Document Type: Original Article | ||||
| DOI: 10.21608/jappmu.2005.238462 | ||||
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| Author | ||||
| M. A. A. Hussein, | ||||
| Anim. Prod. Res. Inst., Agric. Res. Center, Ministry of Agric, Dokki, Giza. | ||||
| Abstract | ||||
| The present study was conducted to determine an adequate dietary, crude protein level for local Mamourah laying hens. One hundred and seventy five (25 males and 150 females) Mamourah chickens of 30 weeks old were used. The birds were randomly distributed into five experimental groups and individually caged in laying batteries. Five experimental diets were formulated to be isocaloric (ME, of about 2700 Kcall Kg) and having different erude protein (CP) Levels (16 % CP; control, 14, 15, 17 or 18 % CPl. The birds were fftd the experimental diets from 30 to 54 weeks. Males were used, however. for semen collection. Hens were artificially inseminated twice a week throughout the experimental period. The criteria of response were laying performance, egg quality. egg fertility. hatchability, and some carcass characteristics. Digestibility of nutrients of the experlrnental diets were determined using adult cockerels. Some blood constituents were also determined. In addition, an economic efficiency was calculated at the end of the experiment The obtained results showed that there were no significant differences among the experimental chicken groups in laying performance, egg quality, fertility and hatchability. or in the studied blood parameters. Also, there were no significant differences among dietary treatments in digestibility coefficients of nutrients of the experimental diets. From an economic point of view, the diets having 14 % or 15 % CP and 2700 Kcal ME/Kg could efficiency be used for Mamourah layers without any adverse effects on their productive or reproductive performance. | ||||
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