Characteristics of the channels and blood parameters of chickens complemented with chromium and their productive acting

Abstract

P?ginas 15-19Recurso Electr?nicoEl presente trabajo evalu? el efecto del cromo en dietas para pollo de engorde con diferentes niveles de inclusi?n. Se evalu? : peso inicial, peso final, ganancia de peso, conversi?n, consumo, rendimiento en canal, peso de alas, pechuga, pernil, colesterol, glicemia y HDL. Se emplearon 96 aves distribuidas en 4 tratamientos con 4 repeticiones y 6 aves en cada una, alimentadas con cromo a partir del d?a noveno de vida hasta el d?a 35. Los tratamientos 1, 2, 3, y 4 conten?an cromo en 0ppm, 0,5 ppm, 1 ppm, y 1,5 ppm en la dieta respectivamente. No se encontraron diferencias significativas (p0,05) en el consumo de alimento. Pese a lo anterior los mejores resultados obtenidos se presentaron en los tratamientos 2. Peso final (1983.3 g vs 2032,3 g), ganancia de peso (1811,9 g vs 1859,9 g ), conversi?n (1,666 vs 1,670). Con respecto al consumo el tratamiento control presento consumo m?s bajo (3305 g vs 3395 g), y rendimiento en canal el tratamiento control presento mejor rendimiento con respecto a los dem?s tratamientos (71,8 % vs 71,3 %). Con respecto a los cortes los resultados favorecen a los tratamientos con cromo, alas (172,9 g vs 181,5 g), pechugas (536,3 g vs 545,1 g), perniles (699,1 g vs 708,6 g). Se determin? que el tratamiento 2 presenta los mejores resultados econ?micos.ABSTRACT. This project aims to evaluate the effect of chromium in breeding chicken diets with different inclusion levels. The items evaluated were: initial weight, final weight, increase in weight, conversion, consumptions, carcass development, wings, breasts, and legs weight, cholesterol, blood sugar, and HDL. A sample of 96 birds was used distributed in 4 treatments with 4 repetitions and 6 birds each, fed with chromium since the 9th day of life until day 35. Treatments 1, 2, 3 and 4 had chromium concentrations of 0 ppm, 0,5 ppm, 1 ppm, and 1,5 ppm in their diet respectively. No significant differences were found (p0,05) was food consumption. Nevertheless, the best results were found in birds subjected to treatment 2: Final weight (1983,3 g vs. 2032,3 g), increase in weight (1811,9 g vs. 1859,9 g), and conversion (1.666 vs. 1.670). Regarding consumption, the control treatment presented the lowest rate (3305 g vs. 3395 g); and regarding yield in channel, the control treatment presented better outputs than the others (71,8 % vs 71,3 %). Examining other criteria, outputs favor chromium treatments: wings (172,9 g vs. 181,5 g), breasts (536,3 g vs. 545,1 g), and legs (669,1 g vs. 708,6 g). Therefore, it was determined that treatment 2 brings better economic results