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Comparative Study On Pathology Of Hemic System Of Three Broiler Chicken Strains Suffering From Experimental

By: Farrukh Hasan Zaidi | Dr. Shakil Akhtar Khan.
Contributor(s): Dr Mubashar | Dr. Shahzada Khurram Ashrrf | Faculty of Veterinary Sciences.
Material type: materialTypeLabelBookPublisher: 1994Subject(s): Department of PathologyDDC classification: 0397,T Dissertation note: Three hundred day old broiler chicks of three different strains (one hundred of each strain) were obtained from the market. The strains were Hubbard (H) Lohmann (L) and Indian River (IR). The chicks of each strain was divided into two groups of equal number, which were further subdivided into two subgroups. The subgroups Al, A2 ; C1, C2 ; and El, E2 were kept as uninoculated control and subgroups B1, B2 ; Dl, D2 and Fl, F2 where inoculated with HPS antigen subcutanoously at the age of 21 days. The number of diseased chicks who died or slaughtered were counted. The maximum number of chicks showed HPS and died and slaughtered, i.e 66% belonged to H, followed by 30% which were JR and then the L which were 24%. The haematologlcal values of all the broilers affected with lIPS were determined. In Hubbard strain the mean ±S.E of TEC was 2.02 ± 0.06 million percubic millimeters, TLC 12.57 ± 0.51 thousand per cubic millimeter, Thrombocyte count 28.60 ± 0.40 thousand per cubic millimeter, Hb content 6.51 ± 0.16, PCV 26.05 ± 0.58, ESR 3.63 ± 0.21. The thousand per cubic milimeter. The PLC were also determined which included lymphocytes 55.16 ± 0.54, monocytes 3.00 ± 0.32% heterophils 40.26 ± 0.39%, eosinphils 0.89 ±. 0.18% and basophils 0.68 ± 0.15. In Lohznann strain the mean j S.Eof TEC was 2.14 ± 0.11 million per cubic millimeter, TLC 18.85 ± 0.2.4 thousand per cubic millimeter, Thrombocyte count 28.42 ± 0.53 thousand per cubic millimeter, Hb content 7.51 ± 0.21, PVC 27.14 ± 0.68, ESR 3.28 ± 0.28. The DLC were also determined which included lymphocytes 58.28 ± 0.82%, moaocytes 3.80 ± 0.31%, heterophils 36.00 ± 0.90%, eosinophils 1.14 ± 0.24% and basophils 0.7l ± 0.26. In Indian River strain the mean ± S.E of TEC was 2.08 ± 0.07 million per cubic millimeter, TLC 16.10 ± 0.78 thousand per cubic millimeter, thrombocyte count 28.58 ± 0.53, Hb content 7.38 ± 0.15, PVC 26.8 t. 0.58, ESR 3.20 ± 0.24. The DLC were also determined which included lymphocytes 55.60 0.47%, monocytes 3.30 . 0.28, heterophils 39.30 ± 0.49%, eosinophils 0.90 .0.17 amd basophils 0.80 ±. 0.27. Gross pathological lesions in the inoculated bizds were studied. The heart showed ballooning due to distention of pericardial sac with pericardial fluid. Other lesions Included haemorrhages on the epicardium and flabbiness of the mycordium .tJnder the microscope, degenerative changes in myocordial tissue were seen. Lesions in the spleen included splenomegaly and haemorraghic spots. Histopathologically there were degeneration, necrosis, and haemorrhages. Aorta showed flabbiness of the wall. The disruption of endothelium was also discerned. Keeping in view all the above findings, It Is concluded that there is a marked difference in uaceptibility of HPS among three different commercial broiler strains and HPS also effects a lot on the hemic system of the broiler. The Hubbard broiler strain is more susceptible which is followed by the Indian River and Lohmann respectively.
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Veterinary Science 0397,T (Browse shelf) Available 0397,T
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Three hundred day old broiler chicks of three different strains (one hundred of each strain) were obtained from the market. The strains were Hubbard (H) Lohmann (L) and Indian River (IR). The chicks of each strain was divided into two groups of equal number, which were further subdivided into two subgroups. The subgroups Al, A2 ; C1, C2 ; and El, E2 were kept as uninoculated control and subgroups B1, B2 ; Dl, D2 and Fl, F2 where inoculated with HPS antigen subcutanoously at the age of 21 days. The number of diseased chicks who died or slaughtered were counted. The maximum number of chicks showed HPS and died and slaughtered, i.e 66% belonged to H, followed by 30% which were JR and then the L which were 24%.

The haematologlcal values of all the broilers affected with lIPS were determined. In Hubbard strain the mean ±S.E of TEC was 2.02 ± 0.06 million percubic millimeters, TLC 12.57 ± 0.51 thousand per cubic millimeter, Thrombocyte count 28.60 ± 0.40 thousand per cubic millimeter, Hb content 6.51 ± 0.16, PCV 26.05 ± 0.58, ESR 3.63 ± 0.21. The thousand per cubic milimeter. The PLC were also determined which included lymphocytes 55.16 ± 0.54, monocytes 3.00 ± 0.32% heterophils 40.26 ± 0.39%, eosinphils 0.89 ±. 0.18% and basophils 0.68 ± 0.15.

In Lohznann strain the mean j S.Eof TEC was 2.14 ± 0.11 million per cubic millimeter, TLC 18.85 ± 0.2.4 thousand per cubic millimeter, Thrombocyte count 28.42 ± 0.53 thousand per cubic millimeter, Hb content 7.51 ± 0.21, PVC 27.14 ± 0.68, ESR 3.28 ± 0.28. The DLC were also determined which included lymphocytes 58.28 ± 0.82%, moaocytes 3.80 ± 0.31%, heterophils 36.00 ± 0.90%, eosinophils 1.14 ± 0.24% and basophils 0.7l ± 0.26.

In Indian River strain the mean ± S.E of TEC was 2.08 ± 0.07 million per cubic millimeter, TLC 16.10 ± 0.78 thousand per cubic millimeter, thrombocyte count 28.58 ± 0.53, Hb content 7.38 ± 0.15, PVC 26.8 t. 0.58, ESR 3.20 ± 0.24. The DLC were also determined which included lymphocytes 55.60 0.47%, monocytes 3.30 . 0.28, heterophils 39.30 ± 0.49%, eosinophils 0.90 .0.17 amd basophils 0.80 ±. 0.27.

Gross pathological lesions in the inoculated bizds were studied. The heart showed ballooning due to distention of pericardial sac with pericardial fluid. Other lesions Included haemorrhages on the epicardium and flabbiness of the mycordium .tJnder the microscope, degenerative changes in myocordial tissue were seen. Lesions in the spleen included splenomegaly and haemorraghic spots. Histopathologically there were degeneration, necrosis, and haemorrhages. Aorta showed flabbiness of the wall. The disruption of endothelium was also discerned.

Keeping in view all the above findings, It Is concluded that there is a marked difference in uaceptibility of HPS among three different commercial broiler strains and HPS also effects a lot on the hemic system of the broiler. The Hubbard broiler strain is more susceptible which is followed by the Indian River and Lohmann respectively.

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