NDLI: Dietary methionine and n-6/n-3 polyunsaturated fatty acid ratio reduce adverse effects of infectious bursal disease in broilers.

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Dietary methionine and n-6/n-3 polyunsaturated fatty acid ratio reduce adverse effects of infectious bursal disease in broilers.

Content Provider	World Health Organization (WHO)-Global Index Medicus
Author	Maroufyan, E. Kasim, A. Ebrahimi, M. Loh, T. C. Hair-Bejo, M. Soleimani, A. F.
Description	Country affiliation: Malaysia Author Affiliation: Maroufyan E ( Department of Animal Science, Universiti Putra Malaysia, 43400 UPM Serdang, Selangor, Malaysia.)
Abstract	This study was carried out to investigate the modulatory effects of dietary methionine and n-6/n-3 polyunsaturated fatty acids (PUFA) ratio on immune response and performance of infectious bursal disease (IBD)-challenged broiler chickens. In total, 350 one-day-old male broiler chicks were assigned to 1 of the 6 dietary treatment groups in a 3 × 2 factorial arrangement. There were 3 n-6/n-3 PUFA ratios (45, 5.5, and 1.5) and 2 levels of methionine (NRC recommendation and twice NRC recommendation). The results showed that birds fed with dietary n-6/n-3 PUFA ratio of 5.5 had higher BW, lower feed intake, and superior FCR than other groups. However, the highest antibody response was observed in birds with dietary n-6/n-3 PUFA ratio of 1.5. Lowering n-6/n-3 PUFA ratio reduced bursa lesion score equally in birds fed with n-6/n-3 PUFA ratio of 5.5 and 1.5. Supplementation of methionine by twice the recommendation also improved FCR and reduced feed intake and bursa lesion score. However, in this study, the optimum performance (as measured by BW, feed intake, and FCR) did not coincide with the optimum immune response (as measured by antibody titer). It seems that dietary n-3 PUFA modulates the broiler chicken performance and immune response in a dose-dependent but nonlinear manner. Therefore, it can be suggested that a balance of moderate level of dietary n-6/n-3 PUFA ratio (5.5) and methionine level (twice recommendation) might enhance immune response together with performance in IBD-challenged broiler chickens.
File Format	HTM / HTML
ISSN	00325791
e-ISSN	15253171
Journal	Poultry Science
Issue Number	9
Volume Number	91
Language	English
Publisher	Oxford University Press
Publisher Date	2012-09-01
Publisher Place	Great Britain (UK)
Access Restriction	Open
Subject Keyword	Discipline Veterinary Medicine Birnaviridae Infections Veterinary Fatty Acids, Omega-3 Pharmacology Fatty Acids, Omega-6 Infectious Bursal Disease Virus Methionine Animal Feed Animal Nutritional Physiological Phenomena Animals Diet Therapy Virology Diet Dietary Supplements Administration & Dosage Chemistry Fish Oils Lymphoid Tissue Drug Effects Plant Oils Poultry Diseases Prevention & Control
Content Type	Text
Resource Type	Article
Subject	Medicine Animal Science and Zoology

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