Results of random sample test for laying performance of nine Egyptian strains of chickens [electronic resouce].
نتائج اختبار العينة العشوائية للاداء الانتاجي من البيض لتسع سلالات من الدجاج المحلي.
- p.195-208.
Includes references.
Nine Egyptian varieties or strains of chickens evaluated for egg performance, feed efficiency of egg production, crude protein and caloric efficiency ratio, body weight at sexual maturity, fertility and hatchability percentages. During the whole testing period, all birds received the same feed and water and kept under the same environmental conditions. The following results were obtained: 1. Matrouh and Inshas reached sexual maturity five or six days significantly earlier (P≤0.01) than the others. Sinai chickens had the heaviest body weight at sexual maturity. 2. The results of rate of lay were in favor of Salam and Dandarawi during the three periods of test and the whole period. Dams of Salam, Golden Montazah, Mandarah and Matrouh can be selected to improve rate of lay in the first 90days of production or/and egg mass. It could be noticed that the tested strains followed different production curves. Therefore, it is recommended in future to test the productivity for longer period than 12 weeks. 3. Estimates of feed efficiency, crude protein efficiency and caloric efficiency ratio were in favor of Salam and Golden Montazah, Mandarah and Matrouh that produced the heaviest eggs. 4. Dandarawi and Fayoumi had higher shape index and thicker shells than all developed strains. Fayoumi and Matrouh showed significantly higher scores for yolk color than other strains. 5. Fayoumi had significantly (P≤0.01) higher yolk to albumen percent than other strains and the eggs from Fayoumi may be more useful in products made of yolk than for use as table eggs.6. Developed strains tested: Golden Montazah, Anshas, Salam and Mandarah had superior Haugh unit scores than other native strains. 7. Fayoumi had significantly higher (P≤0.01) fertility % than all studied strains. Significant differences in hatchability (P≤0.01) were observed among the indegenous breeds due to the variation in late embryonic mortality, which may reflect the presence of some lethal genes in those flocks with higher rate of late mortality.