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Response to dietary supplementation of L-glutamine and L-glutamate in broiler chickens reared at different stocking densities under the hot, humid tropical conditions

A study was conducted to determine whether supplementing AminoGut (a commercial dietary supplement containing a mixture of l-glutamine and l-glutamic acid) to broiler chickens stocked at 2 different densities affected performance, physiological stress responses, foot pad dermatitis incidence, and in...

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Autors principals: Shakeri, Majid, Idrus, Zulkifli, Farjam, Abdoreza Soleimani, O'Reilly, E. L., Eckersall, Peter David, Amir, Anna Aryani, Ramiah, Suriya Kumari, Abdullah, Faez Firdaus Jesse
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Idioma:English
Publicat: Oxford University Press 2014
Accés en línia:http://psasir.upm.edu.my/id/eprint/35246/1/Response%20to%20dietary%20supplementation%20of%20L.pdf
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spelling oai:psasir.upm.edu.my:35246 http://psasir.upm.edu.my/id/eprint/35246/ Response to dietary supplementation of L-glutamine and L-glutamate in broiler chickens reared at different stocking densities under the hot, humid tropical conditions Shakeri, Majid Idrus, Zulkifli Farjam, Abdoreza Soleimani O'Reilly, E. L. Eckersall, Peter David Amir, Anna Aryani Ramiah, Suriya Kumari Abdullah, Faez Firdaus Jesse A study was conducted to determine whether supplementing AminoGut (a commercial dietary supplement containing a mixture of l-glutamine and l-glutamic acid) to broiler chickens stocked at 2 different densities affected performance, physiological stress responses, foot pad dermatitis incidence, and intestinal morphology and microflora. A randomized design in a factorial arrangement with 4 diets [basal diet, basal diet + 0.5% AminoGut from d 1 to 21, basal diet + 0.5% AminoGut from d 1 to 42, and basal diet + virginiamycin (0.02%) for d 1 to 42] and 2 stocking densities [0.100 m2/bird (23 birds/pen; LD) or 0.067 m2/bird (35 birds/pen; HD)]. Results showed that villi length and crypt depth were not changed by different dietary treatments. However, birds in the HD group had smaller villi (P = 0.03) compared with those of the LD group. Regardless of diet, HD consistently increased the serum concentrations of ceruloplasmin, α-1 acid glycoprotein, ovotransferin, and corticosterone (P = 0.0007), and elevated heterophil to lymphocyte ratio (0.0005). Neither AminoGut supplementation nor stocking density affected cecal microflora counts. In conclusion, under the conditions of this study, dietary supplementation of AminoGut, irrespective of stocking density, had no beneficial effect on growth performance, intestinal morphology, and physiological adaptive responses of broiler chickens raised under hot and humid tropical conditions. However, AminoGut supplementation from d 1 to 42 was beneficial in reducing mortality rate. Also, the increased serum concentrations of a wide range of acute phase proteins together with elevated corticosterone and heterophil to lymphocyte ratio suggested that high stocking density induced an acute phase response either indirectly as a result of increased incidence of inflammatory diseases such as foot pad dermatitis or possibly as a direct physiological response to the stress of high stocking density. Oxford University Press 2014-11 Article PeerReviewed application/pdf en http://psasir.upm.edu.my/id/eprint/35246/1/Response%20to%20dietary%20supplementation%20of%20L.pdf Shakeri, Majid and Idrus, Zulkifli and Farjam, Abdoreza Soleimani and O'Reilly, E. L. and Eckersall, Peter David and Amir, Anna Aryani and Ramiah, Suriya Kumari and Abdullah, Faez Firdaus Jesse (2014) Response to dietary supplementation of L-glutamine and L-glutamate in broiler chickens reared at different stocking densities under the hot, humid tropical conditions. Poultry Science, 93 (11). 2700 -2708. ISSN 0032-5791; ESSN: 1525-3171 http://ps.oxfordjournals.org/content/93/11/2700.abstract 10.3382/ps.2014-03910
institution UPM IR
collection UPM IR
language English
description A study was conducted to determine whether supplementing AminoGut (a commercial dietary supplement containing a mixture of l-glutamine and l-glutamic acid) to broiler chickens stocked at 2 different densities affected performance, physiological stress responses, foot pad dermatitis incidence, and intestinal morphology and microflora. A randomized design in a factorial arrangement with 4 diets [basal diet, basal diet + 0.5% AminoGut from d 1 to 21, basal diet + 0.5% AminoGut from d 1 to 42, and basal diet + virginiamycin (0.02%) for d 1 to 42] and 2 stocking densities [0.100 m2/bird (23 birds/pen; LD) or 0.067 m2/bird (35 birds/pen; HD)]. Results showed that villi length and crypt depth were not changed by different dietary treatments. However, birds in the HD group had smaller villi (P = 0.03) compared with those of the LD group. Regardless of diet, HD consistently increased the serum concentrations of ceruloplasmin, α-1 acid glycoprotein, ovotransferin, and corticosterone (P = 0.0007), and elevated heterophil to lymphocyte ratio (0.0005). Neither AminoGut supplementation nor stocking density affected cecal microflora counts. In conclusion, under the conditions of this study, dietary supplementation of AminoGut, irrespective of stocking density, had no beneficial effect on growth performance, intestinal morphology, and physiological adaptive responses of broiler chickens raised under hot and humid tropical conditions. However, AminoGut supplementation from d 1 to 42 was beneficial in reducing mortality rate. Also, the increased serum concentrations of a wide range of acute phase proteins together with elevated corticosterone and heterophil to lymphocyte ratio suggested that high stocking density induced an acute phase response either indirectly as a result of increased incidence of inflammatory diseases such as foot pad dermatitis or possibly as a direct physiological response to the stress of high stocking density.
format Article
author Shakeri, Majid
Idrus, Zulkifli
Farjam, Abdoreza Soleimani
O'Reilly, E. L.
Eckersall, Peter David
Amir, Anna Aryani
Ramiah, Suriya Kumari
Abdullah, Faez Firdaus Jesse
spellingShingle Shakeri, Majid
Idrus, Zulkifli
Farjam, Abdoreza Soleimani
O'Reilly, E. L.
Eckersall, Peter David
Amir, Anna Aryani
Ramiah, Suriya Kumari
Abdullah, Faez Firdaus Jesse
Response to dietary supplementation of L-glutamine and L-glutamate in broiler chickens reared at different stocking densities under the hot, humid tropical conditions
author_facet Shakeri, Majid
Idrus, Zulkifli
Farjam, Abdoreza Soleimani
O'Reilly, E. L.
Eckersall, Peter David
Amir, Anna Aryani
Ramiah, Suriya Kumari
Abdullah, Faez Firdaus Jesse
author_sort Shakeri, Majid
title Response to dietary supplementation of L-glutamine and L-glutamate in broiler chickens reared at different stocking densities under the hot, humid tropical conditions
title_short Response to dietary supplementation of L-glutamine and L-glutamate in broiler chickens reared at different stocking densities under the hot, humid tropical conditions
title_full Response to dietary supplementation of L-glutamine and L-glutamate in broiler chickens reared at different stocking densities under the hot, humid tropical conditions
title_fullStr Response to dietary supplementation of L-glutamine and L-glutamate in broiler chickens reared at different stocking densities under the hot, humid tropical conditions
title_full_unstemmed Response to dietary supplementation of L-glutamine and L-glutamate in broiler chickens reared at different stocking densities under the hot, humid tropical conditions
title_sort response to dietary supplementation of l-glutamine and l-glutamate in broiler chickens reared at different stocking densities under the hot, humid tropical conditions
publisher Oxford University Press
publishDate 2014
url http://psasir.upm.edu.my/id/eprint/35246/1/Response%20to%20dietary%20supplementation%20of%20L.pdf
_version_ 1819295765846032384
score 13.4562235

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