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EFFECT OF UROPYGIALECTOMY ON PRODUCTIVE TRAITS OF JAPANESE QUAIL | ||
| The Iraqi Journal of Agricultural Science | ||
| Article 1, Volume 37, Issue 2, 2006, Pages 121-130 | ||
| Authors | ||
| A. H. Al-Hilali; R. H. Razuki; H. J. Al-Daraji; S. A. Naji; I. A. Abdul-Hassan; A. T. Wali | ||
| Abstract | ||
| Two experiments were conducted at the Poultry Farm of the Animal Resources Department, Iraqi Atomic Energy Commission from June 2002 to January 2003 to determine the influence of uropygialectomy on productive characteristics of Japanese quail (Coturnix coturnix japonica). In experiment 1, a total of 90 females (28 day old) were used. The birds were distributed randomly into 2 groups (45 females for each group) with 3 replicates (15 females each). The first group of females was uropygialectomized, while the second group of females was used as control group. The mean egg production , mean egg weight, egg output (g/hen/d), feed conversion to egg weight and mean feed intake were studied during a period from 7 to 26 weeks of age. In experiment 2 , a total of 144 females and 48 males (28 day old) were used and divided into 4 groups (36 females and 12 males per group with 3 replicates), (12 females and 4 males each). The uropygialectomy was performed on females and males in group 1 (Tl), males alone in group 2 (T2), females alone in group 3 (T3), whereas group 4 (T4) remained as control . Fertility, hatchability of fertile eggs and embryonic mortality for each group were recorded during a period from 10 to 26 weeks of birds age. The results of experiment 1 revealed the superiority of uropygialectomaized hens regarding the mean egg production , mean egg output and feed convertion to egg as compared to control. There were no significant differences between treated groups and control in relation to mean feed intake and mean egg weight. The results of experiment 2 showed that there were significant increases in the fertility rate and hatchability of fertile eggs in Tl and T2 in comparison with T3 and control (T4) , There were no significant differences in the hatching rate from total eggs and the embryonic mortality rate among groups . On the other hand, there were no significant differences between Tl and T2, and between T3 and control (T4) in all traits studied. | ||
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