SEMEN EVALUATION OF BROWN AND BARRED LOCAL ROOSTERS VERSUS ACCLIMATED WHITE LEGHORN AND NEWHAMPSHIR UNDER IRAQI ENVIRONMENTAL CONDITIONS

	SEMEN EVALUATION OF BROWN AND BARRED LOCAL ROOSTERS VERSUS ACCLIMATED WHITE LEGHORN AND NEWHAMPSHIR UNDER IRAQI ENVIRONMENTAL CONDITIONS
AL-TAQANI
Article 1, Volume 21, Issue 2, 2008, Pages 0-0
Abstract
Fourty eight roosters were divided into 4 groups (12 roosters per group) , 24 weeks old were used in this study to evaluate semen of local Brown and Barred and acclimated White Leghorn and New hampshir in Iraq . The birds were reared in individual cages through three environmental periods ; hot (August and September ) , moderate (October and November) and cold (December and January) depending on the mean of maximum and minimum temperature and relative humidity which were recorded as follows: (36.8 – 31.7˚C) and 53 % , (25.8- 21.7˚C) and 63% and (18.7-15.6˚C) and 73% respectively . Results exhibited that high temperature significantly (p 0.01) decreas each of semen volume , total sperms number , massive and individual motility , and significantly (p 0.01) increases dead and abnormal sperms , whereas sperms concentration were not affected . Semen volume and total sperms number significantly (p 0.01) increased in acclimated New hampshir and local Barred . Acclimated White Leghorn recorded the highest value in massive and individual motility and the lowest value in dead and abnormal sperms in comparison with other groups . Species had no significant (p 0.01) effect on sperm concentration , fertility and hatchability percentage . Results indicat that the four bird groups had nearly a similar response to the environmental changes , thus it can be concluded that they are acclimated to Iraqi conditions .

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