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Charles Rangga Tabbu
Bagian Patologi Fakultas Kedokteran Hewan UGM Yogyakarta
Veterinary

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EFFECTS OF ACTIVE GUMBORO VACCINE OF INTERMEDIATE STRAIN HIGH PATHOGENICITY ON THE MORPHOLOGY OF BURSA FABRICIUS AND THE IMMUNE RESPONSE OF BROILER TO VACCINATION AGAINST NEWCASTLE DISEASE Charles Rangga Tabbu
Jurnal Sain Veteriner Vol 16, No 1 (1998)
Publisher : Fakultas Kedokteran Hewan Universitas Gadjah Mada bekerjasama dengan PB PDHI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/jsv.8606

Abstract

This experiment was designed to study the effects of active Gumboro vaccine of high pathogenicity on the morphology of bursa Fabricius and the immune response of broiler to vaccination against Newcastle disease (ND). This experiment was conducted in 330 broilers, which were vaccinated with aviive Gumboro vaccine of high, intermediate and low pathogenicity (control) at the age of 12 days. Experimental chickens were also vaccinated against ND at the age of 4 and 18 days. Diameter of bursas were measured at day 1st through 7th, 14th, 21th, 28th, 35th post Gumboro vaccination. Evaluation of hemaggutination inhibition (HI) liters against ND virus (NDV) were done only at day 7th, 14th, 2lth, 28th and 35th. Samples of bursa were stained with the method of hematoxylin and eosin (H & E). Pathologic evaluation revealed lesions in the bursa Fabricius of chickens vaccinated with Gumboro vaccine of high pathogenicity as well as changes in the diameter of bursa of lesions in this organ. The HI titers against NDV were lower in the group of chickens vaccinated with Gumboro vaccine of high pathogenicity compared with them of other groups. Results indicated that active Gumboro vaccine of high pathogenicity caused lesions in the bursa,which were similar to lesions caused by exposure to field Gumboro virus.
FIELD EVALUATION OF NEWCASTLE DISEASE VACCINE OF VG\GA IN STRAIN SEVERAL COMMERCIAL BROILER FARMS IN JAVA Charles Rangga Tabbu
Jurnal Sain Veteriner Vol 15, No 1&2 (1996)
Publisher : Fakultas Kedokteran Hewan Universitas Gadjah Mada bekerjasama dengan PB PDHI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/jsv.8643

Abstract

This field evaluation was conducted to study the level of protection, post vaccinal reactions and zootechninal performance of groups of chickens which have been vaccinated with Newcastle disease (ND) vaccine of VG/GA strain.This evaluation was done in 26.000 broilers from 4 farms, which have different condition in management practices and were located in different areas of Java.Chickens were vaccinated with VGAGA vaccine or with B-l/La Sota vaccine with/without inactivated ND. Serological tests were done at the age of 28 and 35 days, whereas challenge test with local ND virus isolates was done at the age of 45 days. Results of field evaluation indicated that in broilers, the VG/GA vaccine induced a high level of protection agamst the challenge test with a local (Indonesia) ND virus isolate and against infection with field ND virus. Statistical analysis indicated that the hemagglutination inhibition (HI) titers against NDV were significantly higher (P < 0,05) in group of chickens vaccinated with VG/GA with/without inactivated ND compared to group of chickens vaccinated with B-l/La Sota with/without inactivated ND vaccine. In certain conditions, the post vaccinal reactions were milder and the zootechnkal performance was better in groups of chickens vaccinated with VG/GA strain compared to groups vaccinated with B-l/La Sota.
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