Effect of supplementary threonine in starter wheat-based diets on growth performance, immune system and intestinal organ parameters of broiler chickens

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AKBARI M.R.; HOSEINI S.M.; HAGHIGHI SH.

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Journal: IRANIAN JOURNAL OF VETERINARY CLINICAL SCIENCES Year:2019 | Volume:13 | Issue:1 Page(s): 55-66

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Title

Effect of supplementary threonine in starter wheat-based diets on growth performance, immune system and intestinal organ parameters of broiler chickens

Author(s)

AKBARI M.R. | HOSEINI S.M. | HAGHIGHI SH. | Issue Writer Certificate

Keywords

wheatQ1

threonineQ1

performanceQ1

immune responseQ1

broiler chickensQ1

Abstract

In order to evaluate the effects of supplementation of a low-protein wheat-based diet (WBD) with different levels of threonine on performance and immune function, 280 male one-day-old broiler chicks (Ross 308) were used in a completely randomized design in seven treatment groups of four replicates each. Treatments were a WBD supplemented with seven levels of threonine (90, 100, 110, 120, 130, 140, and 150% of NRC (1994) recommendation. During 1-21 d of age, feed intake (FI), body weight gain (BWG) and feed conversion ratio (FCR) were recorded weekly. For evaluation of immune system response, sheep red blood cells (SRBC) was injected; and in order to evaluate cutaneous basophil hypersensitivity (CBH) response, Phytohemagglutinin (PHA) (100 μ g) was injected into toe web. The mean of BWG significantly decreased when the threonine level increased to more than 130% NRC (1994) recommendations during 15-21 days of age (P<0. 05). Adjusting threonine level at 110% NRC (1994) recommendations comparing to 90%, improved FCR during 15 to 21 and 1 to 21 d of age (P<0. 05). Supplementation of the WBD with threonine at the levels of 110, 120, and 130% of NRC (1994) recommendation, significantly increased antibody titre against SRBC (P<0. 05). Higher dietary threonine levels (110% and 130% of NRC (1994) recommendations), increased CBH response after PHA injection (P<0. 05). Overall, it seems that the requirements of threonine in WBD for optimum performance and immune system enhancement, is more than the NRC (1994) recommendations.

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APA: Copy

AKBARI, M.R., HOSEINI, S.M., & HAGHIGHI, SH.. (2019). Effect of supplementary threonine in starter wheat-based diets on growth performance, immune system and intestinal organ parameters of broiler chickens. IRANIAN JOURNAL OF VETERINARY CLINICAL SCIENCES, 13(1 ), 55-66. SID. https://sid.ir/paper/260156/en

Vancouver: Copy

AKBARI M.R., HOSEINI S.M., HAGHIGHI SH.. Effect of supplementary threonine in starter wheat-based diets on growth performance, immune system and intestinal organ parameters of broiler chickens. IRANIAN JOURNAL OF VETERINARY CLINICAL SCIENCES[Internet]. 2019;13(1 ):55-66. Available from: https://sid.ir/paper/260156/en

IEEE: Copy

M.R. AKBARI, S.M. HOSEINI, and SH. HAGHIGHI, “Effect of supplementary threonine in starter wheat-based diets on growth performance, immune system and intestinal organ parameters of broiler chickens,” IRANIAN JOURNAL OF VETERINARY CLINICAL SCIENCES, vol. 13, no. 1 , pp. 55–66, 2019, [Online]. Available: https://sid.ir/paper/260156/en

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