Rasouli, A. (2014) The effect of Nigella sativa on performance, immune system and gut microflora of Japanese quails under aflatoxicosis. Masters thesis, University of zabol.
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Abstract
The current study was conducted to investigate the effect of Nigella sativa (NS) on performance, immune system and gut microflora of Japanese quails under aflatoxicosis. A total of 600 seven-day-old quails chick were randomly allocated to 8 treatments with 5 replicates (15 birds per replicate) as a completely randomized design in a factorial arrangement (2×4). Treats included 1) without AFB1-without NS, 2) without AFB1-with 0.5 percent NS, 3) without AFB1-with 1 percent NS, 4) without AFB1-with 1.5 percent NS, 5) with 2.5 mg/kg AFB1-without NS, 6) with 2.5 mg/kg AFB1-with 0.5 percent NS, 7) with 2.5 mg/kg AFB1-with 1 percent NS, 8) with 2.5 mg/kg AFB1-with 1.5 percent NS. Various levels of NS significantly affected feed intake (P<0.0002) and weight gain (P<0.0001). Feed intake and weight gain was decreased and FCR increased significantly (P<0.0001) by AFB1. The interaction between different levels of NS and AFB1 on feed intake (P<0.042) and weight gain (P<0.013) was significant. Adding NS to diet significantly (P<0.025) increased relative weight of Bursa. The highest relative weight of Burs was observed in birds fed diet without AFB1-with 1.5 percent NS. Level of 2.5 mg/kg of AFB1 caused a significant (P<0.003) increase in relative weight of liver. The interaction between different levels of NS and AFB1 on relative weight of Bursa were also significant (P<0.046). All levels of NS in the presence of AFB1 improved the relative weight of Bursa. Different levels of NS in the diet significantly (P<0.011) decreased the number of coliforms, specifically in treat 3 and significantly (P<0.0001) increased lactic acid bacteria and total colony count in treatments 3 and 4, respectively. Level of 2.5 mg/kg of AFB1 significantly increased the number of coliforms and decreased the number of lactic acid bacteria (P<0.0027) and (P<0.0001). Adding NS at different levels in the diet significantly (P<0.0001) improved antibody titer against Newcastle disease virus and SRBC. The best antibody titer against the both of immunity test was observed in treat 4. Consecutively level of 2.5 mg/kg of AFB1 significantly (P<0.0012) decreased antibody titer against Newcastle disease virus and antibody titer against SRBC (P<0.0001) in the second injection. Different levels of NS in the diet caused a significant (P<0.0001) difference in the hematocrit percent, relative weight of heart and MDA. Level of 2.5 mg/kg of AFB1 in the diet decreased hematocrit percent (P<0.0001) and relative weight of heart (P<0.001) and, also increased MDA significantly (P<0.0001). The interaction between different levels of NS and AFB1 on MDA were significant (P<0.0001). In the presence of AFB1 all levels of NS decreased MDA, but the lowest MDA was observed in treat 8.
| Item Type: | Thesis (Masters) |
|---|---|
| Uncontrolled Keywords: | Quail, Aflatoxicosis, Nigella sativa, performance, Immune system, Microflora |
| Subjects: | S Agriculture > SF Animal culture |
| Depositing User: | admin admin1 admin2 |
| Date Deposited: | 12 Jun 2017 05:10 |
| Last Modified: | 12 Jun 2017 05:10 |
| URI: | http://eprints.uoz.ac.ir/id/eprint/1514 |
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