Immunomodulatory effects of multistrain probiotic (Protexin TM) on broiler chickens vaccinated against infectious bursal disease virus
2002
Naseem, S.
A project was conducted to study the Immunomodulatory effects of multistrain probiotic (Protexin) on broiler chickens vaccinated against infectious bursal disease virus. Protexin was offered in feed to the broiler chickens from day 1 to day 49 of age. The parameters used to evaluate the effects of Protexin on broiler chicks were body weight gain, FCR, weight of lymphoid organs such as bursa of Fabricius, thymus and spleen and immune response to IBDV vaccination, overall mortality and post virulent IBD challenge mortality and morbidity. The results showed that the Protexin treated groups had high live body weight gain than the Protexin non treated groups, Similarly, the feed conversion ratio of Protexin treated groups was lower than the Protoxin non treated groups. The results showed that the Protexin had no significant effect on the bursal body weight ratio, spleenic body weight ratio and thymic body weight ratio. The mean ELISA antibody titers of probiotic tre ated groups were significantly higher than that of chicken receiving no probiotic. No post challenge morbidity and mortality was was recorded in Protexin groups as compared to untreated groups. Furthermore, birds fed on probiotic (Protexin) resulted in maximum profit and were proved economical.
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