Performance of the 2 ND generation chickens produced from coessing dandarawi with commercial egg type chickens.
Abstract: This study was carried out in Sids poultry Research Station, Animal and Poultry Production Research Institute, Agricultural Research Centre, to evaluate the performance of second generation of three genotypes chickens, cross,(produced from dam Dandarawi x sire shaver) and its reciprocal from sire Dandarawi x dam shaver and Dandarawi from dam Dandarawi and sire Dandarawi, when producing first generation chicks (Abdel-Galel 1999). During production second generation chicks, males from each genotype were mating with females of the same genotype.
The data obtained can be summarized from the study as follows:
1-cross hens had heavier body weight than both their reciprocal (at hatch and 40 weeks old) or Dandarawi hens (at hatch, 20 and 40 weeks. old), also reciprocal cross had heavier weight than Dandarawi hens.
2- cross hens laid first egg and reached 50% production later than both their reciprocal or Dandarawi hens, the reciprocal hens reached to age of first egg and 50% production later than Dandarawi hens.
3-Dandarawi chickens were more viable than cross or their reciprocal chickens during growing period, but there were no significant differences during laying period in respect to viability of different genotypes.
4- cross hens had heavier egg weight, more egg number during first 150 days, more egg mass than both their reciprocal cross or Dandarwei hens, also reciprocal hens had significant superiority in this traits than Dandarawi hens.
5-Although,cross hens consumed more feeds during laying period than their reciprocal or Dandarawi hens, but, they were more efficient in conversion of feeds to eggs than their reciprocal or Dandarwi hens.
Moreover, the reciprocal cross hens were more efficient in conversion of feed to eggs than Dandarawei hens.
6-Dandarawei hens had higher fertility and hatchability percentages than both cross and reciprocal cross, but, there were no significant differences between cross and its reciprocal in this traits. Moreover, fertility and hatchability were higher in winter than summer and there were significant interaction between. genotype and season in this trait.
7 – Dandarawi eggs had best shell and yolk weight % than eggs of cross and its reciprocal; the egg quality measurements were best in winter season than summer season.
8- when we assumed that Dandarawi performance were 100% in first and second generations, it could be observed that cross and reciprocal cross had superiority performance during first and second generation than Dandarawi. Also, the performance of first generation chicks were somewhat better than the second generation. It could be concluded that the productive performance of the cross and its reciprocal during second generation were better than Dandarawi hens.
Publication year 2003
Availability location معهد بحوث الانتاج الحيوانى- شارع نادى الصيد- الدقى - الجيزة
Availability number
Organization Name
Country Egypt
City القاهرة
serial title Egyptian Journal Agricultural Research
Volume 81 . 2
Department Poultry Breeding Research Department
Author(s) from ARC
Agris Categories Animal husbandry
AGROVOC
TERMS		 Breeding stock. Chicks. Layer chickens.
Publication Type Journal
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