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Evaluation of a commercial clay and a modified experimental variant on performance, oral injuries and mortality in broilers fed with diets contaminated with T-2 mycotoxins.

Published: October 30, 2014
By: Arce JM1, Garci´a FM2, Lo´pez CC3, Landetta CHC4, A´vila GE3 1 Morelia Research Farm. Instituto Nacional de Investigaciones Forestales, Agri´colas y Pecuarias (INIFAP) 2 CFATA, UNAM, Juriquilla, Qro., Mexico 3 Facultad de Medicina Veterinaria y Zootecnia, Universidad Nacional Auto´noma de Me´xico. 4 Grupo Karluis, Quere´taro, Qro, Me´xico.
In order to study the effect of addition of a commercial natural detoxifying activated hydrated sodium calcium aluminosilicate (MexsilTM) and a modified experimental variant (MexsilTM modified) on the performance of broiler chicks fed with contaminated diets with T-2 mycotoxins, an experiment was conducted. Six hundred Ross 308 mixed broiler chicks of a day of age were used, which were distributed in 30 pens with litter of straw wheat, in groups of 20 birds each one. A completely random design of 6 treatments was used, each treatment with 5 repetitions. The treatments consisted of sorghum-soybean meal-corngluten diets; sorghum contaminated with T-2 mycotoxin was used to have the following treatments: 1) Control Diet without contamination, 2) Diet with 900 ppb of T-2, 3) As Nr 2 + experimental clay (3.5kg/ton.), 4) As Nr 2 + experimental clay (2 kg/ton.), 5) As Nr 2 + commercial clay (5kg/ton.), and 6) As Nr 1+ experimental clay (3.5kg/ton.). Data at 35 days of experimentation in mortality, show no differences (P>0.05) among treatments.
The results obtained to the 35 days of age for weight gain in grams (1635ab, 1506d, 1594bc, 1593bc, 1573c and 1663a), feed consumption in grams (3053a, 2924c, 2959bc, 2943c, 2916c and 3037ab) and feed conversion (1.91a, 1.99b, 1.90a, 1.89a, 1.90a and 1.87a) for treatments 1, 2, 3, 4, 5 and 6 respectively; indicated statistical differences (P<0.05) among treatments. The chicks that consumed feed contaminated with T-2 presented in average 5% of moderate oral lesions in hard palate, which were not avoided with the addition of clays in the diet. In fact, the T-2 mycotoxin added to 900 ppb decreased weight gain and feed consumption, and affected feed conversion. However, the addition of both, the experimental clay at the two studied doses, and the commercial clay, improved weight gain and feed conversion of broilers, having similar results to those fed with the diet without contamination. The addition of the modified clay to the control diet without contamination improved values in weight gain, feed consumption and feed conversion. This information corroborates the beneficial effect of the aluminosilicates MexsilTM and MexsilTM modified on the productive performance of broiler chicks fed diets contaminated with T-2 mycotoxin.
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