Hematological and Serological Response of Some Chicken Types at on Station to Newcastle and Marek's Disease Vaccination
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Date
2011-06
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Addis Ababa University
Abstract
I\n experimental study on five Ethiopian chicken ecotypes namely Jarso, Tepi , Chere, Arsi
and Horro and other two chicken breeds (Fayoumi and 130vans) was conducted from
December 2010 to June 20 11. Total of 260 chickens among which 70 Cheick. 40 Jarso. 2 1
Lorre, 9 I\rsi. 30 Tepi. 20 Bovans and 70 Fayoumi chickens were included in the study. The
objective or the study was to evaluate the responses of different chicken types to Marek's and
Newcastle disease vaccination through hematological profile, serum protein profile and
antibody titer. Day old chicks 01' each ecotype were randomized in to two groups one for
Marek's disease (MD) vaccination and the other remain unvaccinated while all or them
vaccinated against Newcastle disease vaccine (I .a Sota strain) on 21 st, 5O'th and 120'h day after
hatching. Three round blood sample was collected at age or day 3S, 65 and 105. For serum
protein analysis and hemaglutination inhibition (III) antibody titer test three round serum
sample was collected on 3S'h 6S'h and 135,h day each following fifteen days after vaccination
with Newcastle disease vaccine. IA cording to the current study the total leukocyte,
lymphocyte and monocyte count was found to be higher for Fayoumi and minimum count
was observed for lorry chicken. Heterophil, eosinophil and basophil count was higher in Arsi
chicken. Hi ghost packed cell volume (PCV) value (361.3.9) was observed in I:ayoumi chicken
whereas maximum value' or hemoglobin concentration (9.002+.97) was in I\rsi chicken. The
comparison or MD vaccinated to nonc vaccinated chicken reveled higher val ues of all counts
and I'CV revaccinated but lower hemoglobin concentration. Lymphocyte count was found to
increase with time (age) while others either decrease or no clear pattern. On the other hand,
the HI titerl'or Newcastle was compared and Jarso and Fayoumi were found to be superior
over the other chicken types whereas Bovans, Tepi and 1-IOiTO were with lower titer. The trend
for total protein was increasing far Jarso, Tepi and Arsi and the values in these ecotypes were
higher. This study generally loud that the chicken types involved were or a wide diversity in
their response to Marek's and Newcastle vaccination which was reflected by the difference in
hematological. serological and total protein values in responses to vaccination.
Key words: Chicken types, hemagglutination Inhibition. Climatological profile,
Immune response, Marek '.I' disease, Newcastle disease, prolamin profile, vaccination
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Keywords
Chicken types, hemagglutination Inhibition. Climatological profile, Immune response, Marek '.I' disease, Newcastle disease, prolamin profile, vaccination