Assessment of protection against Eimeria tenella in broiler breeders conferred by a live anticoccidial vaccine and effects of vaccination on early pullet growth
Summary: Vaccination with live anticoccidial vaccine is widely practiced to control coccidiosis in broiler breeders. However, vaccination during feed restriction may affect early pullet growth. Two experiments were conducted using Cobb-500-FF broiler breeder female chicks to evaluate the level of im...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
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Elsevier
2020-06-01
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| Series: | Journal of Applied Poultry Research |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S1056617120300295 |
| _version_ | 1828496321966768128 |
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| author | M.S. Abdul Rasheed P.L. Matsler |
| author_facet | M.S. Abdul Rasheed P.L. Matsler |
| author_sort | M.S. Abdul Rasheed |
| collection | DOAJ |
| description | Summary: Vaccination with live anticoccidial vaccine is widely practiced to control coccidiosis in broiler breeders. However, vaccination during feed restriction may affect early pullet growth. Two experiments were conducted using Cobb-500-FF broiler breeder female chicks to evaluate the level of immunity generated by a live anticoccidial vaccine and to study the effects of vaccination with low doses of Eimeria acervulina, Eimeria tenella, and Eimeria maxima on early growth of chicks during feed restriction. In the first experiment, unvaccinated and vaccinated chicks were allocated to battery cages at days postvaccination (DPV) 28, 35, 42, 49, and 56 and challenged with 100,000 oocysts of E. tenella. In the second experiment, a total of 280-day-old chicks were allocated to 2 groups and vaccinated with either 0 or 500 oocysts each of 3 species of Eimeria. Cecal gross lesion scores and dropping pan scores were significantly reduced (P < 0.05) in vaccinated groups at all time points in the first experiment suggesting that birds had acquired immunity against E. tenella challenge infection. In the second experiment, birds vaccinated with low doses of Eimeria showed reduced (P < 0.05) body weights and chest girths compared with control birds at DPV 14, 42, 63, and 84. The results indicate that vaccination with a live anticoccidial vaccine provides immunity against a challenge infection that is sufficient to prevent gross pathology. However, early growth of feed restricted pullets may be adversely affected. |
| first_indexed | 2024-12-11T12:26:49Z |
| format | Article |
| id | doaj.art-965e450a67a14ee8ab1345670a1e66ca |
| institution | Directory Open Access Journal |
| issn | 1056-6171 |
| language | English |
| last_indexed | 2024-12-11T12:26:49Z |
| publishDate | 2020-06-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Journal of Applied Poultry Research |
| spelling | doaj.art-965e450a67a14ee8ab1345670a1e66ca2022-12-22T01:07:21ZengElsevierJournal of Applied Poultry Research1056-61712020-06-01292447454Assessment of protection against Eimeria tenella in broiler breeders conferred by a live anticoccidial vaccine and effects of vaccination on early pullet growthM.S. Abdul Rasheed0P.L. Matsler1Department of Poultry Science, University of Arkansas, Fayetteville, 72701, USA; Department of Animal Science, University of Illinois, Urbana, 61801, USA; Corresponding author:Department of Poultry Science, University of Arkansas, Fayetteville, 72701, USASummary: Vaccination with live anticoccidial vaccine is widely practiced to control coccidiosis in broiler breeders. However, vaccination during feed restriction may affect early pullet growth. Two experiments were conducted using Cobb-500-FF broiler breeder female chicks to evaluate the level of immunity generated by a live anticoccidial vaccine and to study the effects of vaccination with low doses of Eimeria acervulina, Eimeria tenella, and Eimeria maxima on early growth of chicks during feed restriction. In the first experiment, unvaccinated and vaccinated chicks were allocated to battery cages at days postvaccination (DPV) 28, 35, 42, 49, and 56 and challenged with 100,000 oocysts of E. tenella. In the second experiment, a total of 280-day-old chicks were allocated to 2 groups and vaccinated with either 0 or 500 oocysts each of 3 species of Eimeria. Cecal gross lesion scores and dropping pan scores were significantly reduced (P < 0.05) in vaccinated groups at all time points in the first experiment suggesting that birds had acquired immunity against E. tenella challenge infection. In the second experiment, birds vaccinated with low doses of Eimeria showed reduced (P < 0.05) body weights and chest girths compared with control birds at DPV 14, 42, 63, and 84. The results indicate that vaccination with a live anticoccidial vaccine provides immunity against a challenge infection that is sufficient to prevent gross pathology. However, early growth of feed restricted pullets may be adversely affected.http://www.sciencedirect.com/science/article/pii/S1056617120300295anticoccidial vaccineEimeriabroiler breederimmunityfeed restriction |
| spellingShingle | M.S. Abdul Rasheed P.L. Matsler Assessment of protection against Eimeria tenella in broiler breeders conferred by a live anticoccidial vaccine and effects of vaccination on early pullet growth Journal of Applied Poultry Research anticoccidial vaccine Eimeria broiler breeder immunity feed restriction |
| title | Assessment of protection against Eimeria tenella in broiler breeders conferred by a live anticoccidial vaccine and effects of vaccination on early pullet growth |
| title_full | Assessment of protection against Eimeria tenella in broiler breeders conferred by a live anticoccidial vaccine and effects of vaccination on early pullet growth |
| title_fullStr | Assessment of protection against Eimeria tenella in broiler breeders conferred by a live anticoccidial vaccine and effects of vaccination on early pullet growth |
| title_full_unstemmed | Assessment of protection against Eimeria tenella in broiler breeders conferred by a live anticoccidial vaccine and effects of vaccination on early pullet growth |
| title_short | Assessment of protection against Eimeria tenella in broiler breeders conferred by a live anticoccidial vaccine and effects of vaccination on early pullet growth |
| title_sort | assessment of protection against eimeria tenella in broiler breeders conferred by a live anticoccidial vaccine and effects of vaccination on early pullet growth |
| topic | anticoccidial vaccine Eimeria broiler breeder immunity feed restriction |
| url | http://www.sciencedirect.com/science/article/pii/S1056617120300295 |
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