Energía neta de tres ingredientes para cerdos en crecimiento a partir de digestibilidad de nutrientes y energía digestible
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Authors
Alvarez Sacio, Carmen Hortensia
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Abstract
La presente investigación se realizó con el objetivo de estimar la energía neta de tres ingredientes para cerdos en crecimiento, maíz amarillo duro, torta de soya y subproducto de trigo, a partir de digestibilidad de nutrientes y energía digestible, obtenidos mediante los métodos de colección total y cenizas insolubles en ácido 2N (CIA 2N) y 4N (CIA 4N), empleando la ecuación de predicción sugerida por Noblet, et al., 1994 y la propuesta por Liu et al., 2015. Se emplearon 12 cerdos, cruce Landrace x Yorkshire con peso promedio de 30 kg, los cuales fueron alojados en jaulas metabólicas individuales. Se contó con una dieta basal y para la determinación de la ED y coeficientes de digestibilidad de los insumos evaluados se empleó el método de sustitución. El porcentaje de sustitución para el caso del maíz fue 50%, para torta de soya fue 30% y para subproducto de trigo fue 40%, para la evaluación de los resultados se empleó un diseño completo al azar. Los coeficientes de digestibilidad aparente obtenidos para los nutrientes del maíz, torta de soya y subproducto de trigo, por las tres técnicas analíticas: colección total, CIA 2N, CIA 4N fueron similares, a excepción de los coeficientes de digestibilidad de MS y EE del maíz que fueron estadísticamente menores para el caso de CT y la ceniza en el caso de la torta de soya que fue estadísticamente mayor el obtenido por CIA 4N. La ED del maíz, torta de soya y subproducto de trigo determinada por las tres técnicas analíticas: colección total, CIA 2N, CIA 4N, fueron similares y se encuentran dentro del rango reportado en la literatura. La EN estimada fue de 2455, 2600 y 2044 kcal/kg base fresca, para maíz, torta de soya y subproducto de trigo, respectivamente. En base a los resultados se puede concluir que el uso de cenizas insolubles en ácido es una buena alternativa para estimar la digestibilidad de nutrientes de los insumos evaluados y la EN estimada es similar con ambas ecuaciones de predicción.
The present research was conducted with the objective of estimating the net energy of three ingredients for growing pigs, hard yellow corn, soybean meal and wheat by-product, from nutrient digestibility and digestible energy, obtained by the total collection methods and insoluble ash in 2N and 4N acid. The prediction equations suggested by Noblet et al. (1994) and Liu et al. (2015) were employed for estimation. Twelve Landrace x Yorkshire crossbred pigs with an average weight of 30 kg were used, housed in individual metabolic cages. A basal diet was used, and the substitution method was employed to determine the digestible energy (DE) and digestibility coefficients of the evaluated ingredients. The substitution percentages were 50% for corn, 30% for soybean meal, and 40% for wheat byproduct. A completely randomized design was used for data analysis. The apparent digestibility coefficients obtained for the nutrients of corn, soybean meal, and wheat byproduct, by the three analytical techniques (total collection, 2N AIA, 4N AIA) were similar, with the exception of the digestibility coefficients of dry matter (DM) and ether extract (EE) for corn, which were statistically lower for total collection, and ash in the case of soybean meal, which was statistically higher for 4N AIA. The DE of corn, soybean meal, and wheat byproduct determined by the three analytical techniques (total collection, 2N AIA, 4N AIA) were similar and within the range reported in the literature. The estimated net energy (NE) values were 2455, 2600, and 2044 kcal/kg on a fresh basis for corn, soybean meal, and wheat byproduct, respectively. Based on these results, it can be concluded that using acid-insoluble ash is a good alternative for estimating nutrient digestibility of the evaluated ingredients, and the estimated NE is similar with both prediction equations
The present research was conducted with the objective of estimating the net energy of three ingredients for growing pigs, hard yellow corn, soybean meal and wheat by-product, from nutrient digestibility and digestible energy, obtained by the total collection methods and insoluble ash in 2N and 4N acid. The prediction equations suggested by Noblet et al. (1994) and Liu et al. (2015) were employed for estimation. Twelve Landrace x Yorkshire crossbred pigs with an average weight of 30 kg were used, housed in individual metabolic cages. A basal diet was used, and the substitution method was employed to determine the digestible energy (DE) and digestibility coefficients of the evaluated ingredients. The substitution percentages were 50% for corn, 30% for soybean meal, and 40% for wheat byproduct. A completely randomized design was used for data analysis. The apparent digestibility coefficients obtained for the nutrients of corn, soybean meal, and wheat byproduct, by the three analytical techniques (total collection, 2N AIA, 4N AIA) were similar, with the exception of the digestibility coefficients of dry matter (DM) and ether extract (EE) for corn, which were statistically lower for total collection, and ash in the case of soybean meal, which was statistically higher for 4N AIA. The DE of corn, soybean meal, and wheat byproduct determined by the three analytical techniques (total collection, 2N AIA, 4N AIA) were similar and within the range reported in the literature. The estimated net energy (NE) values were 2455, 2600, and 2044 kcal/kg on a fresh basis for corn, soybean meal, and wheat byproduct, respectively. Based on these results, it can be concluded that using acid-insoluble ash is a good alternative for estimating nutrient digestibility of the evaluated ingredients, and the estimated NE is similar with both prediction equations
Description
Universidad Nacional Agraria La Molina. Escuela de Posgrado. Maestría en Nutrición
Keywords
Cerdos
Citation
Date
2025
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