Comparative Immune Response Of Anticoccidial Monovalent And Polyvalent Vaccines On Nd Vaccinated Broiler
Wajiha Maqsood 6340
Dr.Haji Ahmad Hashmi 5449
Dr.Muhammad 4698
Dr.Muhammad Afzal 5368
Faculty of Veterinary Sciences 4292
Department of Parasitology 4290
0660,T
The study was conducted to estimate the immune response of the three anticoccidial virus vaccines on NDV vaccinated broiler chicks. The vaccines used were, Eirneria tenella vaccine (ETV), Immucox and Coccivac. For this purpose a total of one hundred and five chicks were randomly divided into five groups, namely group A, B, C, D and E on day I Each group consisting of twenty one birds. All the chicks except those in group A, were occulonasally vaccinated with Newcastle disease virus vaccine using Mukteswar strain of virus on day I and 2 1
Chicks in group A were kept as non-i nfectecl, non-vaccinated controls. Group B was non-infected, hut vaccinated with NDV. group C was also vaccinated with Eimeria tenella vaccine on days 3 and 10 of age. Group D was administered with single dose of Immucox on day 5th of age and, group E was administered with Coccivac on day 6111.
After vaccination weekly mean weightgains, mean oocysts per gms of faeces (OPG), and mean feed conversion ratio of chicks in all the groups were recorded. Regular sera samples were also collected from the blood obtained from birds of all the groups, after administration of second dose of NDV on day 21 of age. All the sera samples were analyzed by using Haernagglutination (HA) and Haemagglutination inhibition (HI) tests.
obtained from birds of all the groups, after administration of second dose of NDV on day 21 of age. All the sea samples were analyzed by using Haemagglutination (HA) and Haemagglutination inhibition (HI) tests.
It was observed that no coccidiosis could be established in chicks of groups A, B and C. However oocysts were observed in the faecal material of chicks of group D and E after one week of administration of anticoccidial vaccines (immucox and coccivac) respectively. But OPG was gradually increase after second week of vaccination and one bird in group D died due to coccidiosis, OPG count reached to a peak after second week of vaccination and one bird in group D and one in group F died due to coccidiosis.
Mean weight gains per chick on day 1 was 41, 42, 40, 39 and 38 of groups A, B, C, D and F respectively. however the mean body weights were 1746, gms 1848, 1725, 1710 and 1695 gms for chicks in groups A, B, C, D and E respectively at Group B showed significant weight gain as compared to other groups and their difference of weight gain from group B was, 103, 123, 138, and 153 gms of groups A, C, D and F respectively. (P > 0.05).
Feed conversion ratio of groups A. B, C, D and F was 1.85, 1.99, 1 .88, 1.77 and 1.78 respectively at the end of experiment. Group B and C showed the best FCR as compared to other groups of the same age. But statistically the differences were non-signiFicant amongst all the test groups.
Morphometeric analysis of immuno modulatory organs revealed that group B showed highest organ weight and the organ body ratio as compared to other groups of same age at the end of experiment Besides group B, group C also showed the second highest of the organ body weights and the organ body ratios, as compared to other anticoccidial vaccinated groups D and E and among them group C showed the highest of organ weight and organ body ratio.
Antibody analysis revealed that geometric mean titre (GMT) in the chicks of group B (NDV vaccinated control group) showed the highest value (73.3) as compared to other groups of same age at the end of experiment. However group C showed the second highest value (68.6) on 49th day. Where as other anticoccidial vaccinated groups D and E showed their GMT value as 21.1 and 22.6 respectively, and antibody titre of group A (non-infected non vaccinated control group) was zero at the end of experiment.
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