Effect of methionine different levels on performance, immune system and gastrointestinal microbial population of Japanese quail under aflatoxicosis

Ghorbani, Adel (2015) Effect of methionine different levels on performance, immune system and gastrointestinal microbial population of Japanese quail under aflatoxicosis. Masters thesis, University of Zabol.

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Abstract

In this research, the detoxification effects of methionine (MET) on performance, immunity, and microbial population of Japanese quails fed afflation B1 (AFB1) were studied. Nine experimental diets with 3 levels of MET (i.e., 0.5, 0.6 and 0.7% of diet) and 3 levels of AFB1 (i.e., 0, 2.5, and 5 mg/kg) in a completely randomized design and 3 × 3 factorial arrangement were fed to 360 quail chicks from 7 to 35 days of age. Dietary treatments significantly affected quail performance so that the highest feed intake was observed in birds received 0.7% MET without AFB1 and lowest feed intake was observed in birds received 5 mg AFB1 per kg and 0.5% MET (P < 0.05). The birds received 5 mg AFB1 per kg and 0.5% MET showed the lowest G (P < 0.05) and the lowest feed conversion ratio was attributed to the birds received 0.6% MET (P < 0.05). The birds fed 5 mg AFB1 per kg and 0.5% MET had the lowest live weight and highest relative Gizzard (P > 0.05) and the highest relative weight of liver (P >0.05). The highest antibody production against sheep red blood cell antigen was observed in birds receiving 0.7% MET without AFB1 (P < 0.05), and the lowest skin thickness response to DNCB challenge was attributed to the birds fed 0.5% MET and 2.5 mg AFB1 per kg (P > 0.05). The birds fed 0.7% MET without AFB1 had the highest lactic acid bacteria population while the lowest lactic acid bacteria population was observed in birds received 0.5% MET with 5 mg AFB1 per kg (P < 0.05). The highest E.coli population was observed in birds fed 0.7% MET without AFB1 (P < 0.05).

Item Type: Thesis (Masters)
Uncontrolled Keywords: Japanese quail, Methionine, Immune system, Microflora, Aflatoxicosis
Subjects: S Agriculture > SF Animal culture
Depositing User: admin admin1 admin2
Date Deposited: 23 May 2016 07:49
Last Modified: 23 May 2016 07:49
URI: http://eprints.uoz.ac.ir/id/eprint/634

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