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Asian Journal of Animal and Veterinary Advances
Year: 2015  |  Volume: 10  |  Issue: 1  |  Page No.: 35 - 42

Assessment of Maternal Immunity against Newcastle Disease in Offspring Chicks as Affected by Parents Genetic Crossing

A.S. Ahmed    

Abstract: This study was conducted to assess the effect of genetic crossing using four chicken lines Hajar1 line, Hajar2 line, Hisex sires×Hajar1 dams cross (HiH1) and Hisex sires×Hajar2 dams cross (HiH2) on the maternal immunity against Newcastle Disease (ND) of chicks for the first 14 days of age. Each line consisted of 100 unvaccinated chicks represented both sexes equally in five replicates in a caging house system. Feed and water were provided ad libitum. Serum samples were collected at 3, 7, 10 and 14 days of age for ND titration. Spleen and bursa weight were evaluated at 14 days of age. The results indicated comparable ND antibody levels between all lines at 3 days of age. Cross lines chicks showed significantly low ND antibody level by 7, 10 and 14 days of age compared to local lines. Sex of the birds did not participate as a major factor that affect ND antibody level or glands weight. Bursa weight did not affected by genetic line while spleen weight demonstrated trivial change due to the genetic line effect. Although the literature provided little attention to the role of male partner in the maternal immunity efficiency, our results indicated the possible effect of male parents in modulating the maternal antibody efficiency to ND in their offspring. In addition, the genetic line and the male parent participation in maternal antibodies degradation process over the first 14 days of age should be considered.

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