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Ameliorative effects of dietary clinoptilolite on pathological changes in broiler chickens during aflatoxins
Scopus
Toplam 145 atıf DOI
The amelioration of aflatoxicosis in broiler chickens was examined by feeding two concentrations of natural zeolite (clinoptilolite). Clinoptilolite (CLI), incorporated into the diet at 1.5 and 2.5 per cent, was evaluated for the ability to reduce the deleterious effects of 2.5 mg total aflatoxin (AF) kg-1 diet on growing broiler chicks from 1 to 21 days of age. A total of 360 broiler chicks were divided into six treatment groups [Control, AF, CLI (1.5 per cent), AF plus CLI (1.5 per cent), CLI (2.5 per cent), and AF plus CLI (2.5 per cent)] each consisting of 60 chicks. Compared to controls, the AF consuming chicks showed increases in the relative weights of liver and kidney; and gross-histopathologic hepatic lesions such as paleness, friability, diffuse hydropic degeneration and/or fatty change, bile-duct hyperplasia and periportal fibrosis. Glumerular hypertrophy, increases in the number of mesengial cells and hydropic degeneration of tubuler epithelium in kidneys of chicks fed diet AF alone were also observed. Atrophy and lymphoid depletion were seen in the thymuses and bursa of Fabricius from the chicks fed AF alone. The additions of CLI (1.5 and 2.5 per cent) to the AF-containing diet moderately (significantly in some cases) decreased the number of affected broilers and/or the severity of lesions. The addition of CLI to the AF-free diet did not produce any significant changes compared with the controls. These results suggest that CLI was effective for the protection of AF-toxication in broilers and it could contribute to a solution of the AF problem in poultry production. © 2001 Harcourt Publishers Ltd.
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In vitro mycotoxin binding capacities of clays, glucomannan and their combinations
Scopus
Havuzumuzda 21 atıf almış
Clays, glucomannans and their combinations are widely used to bind mycotoxins in contaminated feeds to reduce their toxic effects on animals. In the present study, the binding abilities of clinoptilolite, sepiolite, bentonite, and montmorillonite, glucomannan, and four commercial TB products (P1, P2, C1 and C2) were investigated in vitro for their binding effects on seven different mycotoxins (AF, aflatoxin; OTA, ochratoxin; ZEA, zearalenone; DON, deoxynivalenol; FUM, fumonisin; T-2 toxin, and HT-2 toxin) in medium at pH 3.0 and 6.8. The clays were observed to bind AF, DON, and OTA at the following levels: clinoptilolite on AF at 72–90%, on DON at 61–68%, and on OTA at 52–62%; sepiolite on AF at 92–98%, on DON at 36–68%, and on OTA at 53–55%; bentonite on AF at 88–95%, on DON at 23–73%, and on OTA at 54–56%, and montmorillonite on AF at 74–80%, on DON at 46–68%, and on OTA at 54–55%. We also observed that these clays bound ZEA, FUM, T-2, and HT-2 at 25–45%. Glucomannan bound AF at a high rate (85–96%); however, bound DON at 31–56% and OTA at 54–55%, and other mycotoxins at 25–43%. Although P1, which consisted of clay combinations, bound AF and OTA at high rates, it bound DON, FUM, ZEA, T-2, and HT-2 at medium rates. P2, to which glucomannan was added to the clay combination, was observed to have the ability to bind OTA, FUM, and T-2 at ∼15–20% more than P1. When similar commercial products were compared, P2 provided ∼>10% adsorption of AF, 20% of OTA and FUM, and 5% of T-2 than C1, while similar binding ability of these two products were observed on the other toxins.
Atıf Yapan Makale Bilgileri
Kurumlar (5)
Ankara Pursaklar YKMS Vocational Technical Anatolian Highschool
Ankara, Turkey
Faculty of Natural Science, Konya Food and Agricultural University
Konya, Turkey
Kafkas Üniversitesi, Veteriner Fakültesi
Kars, Turkey
Konya Veterinary Control Institute
Konya, Turkey
Selçuk Üniversitesi
Selçuklu, Turkey