khanipour, Sousan (2015) Effect of different levels of tryptophan Amino acid on performance immune System and gut micro flora of Japanese Quails under Aflatoxicosis. Masters thesis, University of Zabol.
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Abstract
In this research, the detoxification effects of tryptophan (TRP) on performance, immunity, and microbial population of Japanese quails fed aflatoxin B1 (AFB1) were studied. Six experimental diets with 2 levels of TRP (i.e., 0.35 and 0.45% of diet) and 3 levels of AFB1 (i.e., 0, 2.5, and 5 mg/kg) in a completely randomized design and 2 × 3 factorial arrangement were fed to 240 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 0.25% TRP without AFB1 and lowest feed intake was observed in birds received 5 mg AFB1 per kg and 0.25% TRP (P < 0.05). The birds received 5 mg AFB1 per kg and 0.25% TRP showed the lowest G (P < 0.05) and lowest feed conversion ratio was attributed to the birds received 0.45% TRP (P < 0.05). The birds fed 5 mg AFB1 per kg and 0.25% TRP had the lowest live weight, carcass percent, leg meat yield, and relative weight of bursa of Fabricious (P < 0.05) while the highest relative weight of liver (P < 0.05). The highest antibody production against sheep red blood cell antigen and skin thickness response to DNCB challenge were observed in birds received 0.45% TRP without AFB1 (P < 0.05) while the lowest skin thickness response to DNCB challenge was attributed to the birds fed 0.25% TRP and 2.5 mg AFB1 per kg (P < 0.05). The birds fed 0.45% TRP without AFB1 had the highest lactic acid bacteria population while the lowest lactic acid bacteria population was observed in birds received 0.25% TRP with 5 mg AFB1 per kg (P < 0.05). However, the highest E.coli population and total microbial population were observed in birds fed 0.25% TRP and 5 mg AFB1 per kg while the lowest harmful bacteria was attributed to the birds received 0.45% TRP and 5 mg AFB1 per kg (P < 0.05).
| Item Type: | Thesis (Masters) |
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| Uncontrolled Keywords: | Japanese quail, Tryptophan, Immune system, Micro flora, Aflatoxicosis |
| Subjects: | S Agriculture > SF Animal culture |
| Depositing User: | admin admin1 admin2 |
| Date Deposited: | 17 Apr 2016 08:39 |
| Last Modified: | 17 Apr 2016 08:39 |
| URI: | http://eprints.uoz.ac.ir/id/eprint/327 |
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