EFECTO DE LA SUPLEMENTACIÓN DE ÁCIDOS ORGÁNICOS SOBRE PARÁMETROS PRODUCTIVOS DEL CUY (Cavia porcellus)

Abstract

RESUMENEl objetivo del estudio fue evaluar el efecto de la suplementación de ácidos orgáni-cos (AO) sobre los parámetros productivos del cuy (Cavia porcellus). Ochenta cuyes machos fueron distribuidos aleatoriamente en 20 unidades experimentales, las cuales se distribuyeron aleatoriamente en cinco tratamientos: T1: Control (dieta base), T2: Antibió-tico Promotor del Crecimiento (APC) (dieta base más 200 ppm de Zinc-Bacitracina), T3, T4 y T5: Ácidos orgánicos (AO) (dieta base más 100, 200 o 300 ppm, respectivamente, de una mezcla de ácido acético, láctico y propiónico en iguales proporciones). La dieta base estuvo compuesta por forraje (Rye grass + trébol) más concentrado (afrechillo de trigo). Los animales estuvieron expuestos a los tratamientos por 10 semanas. Se evaluó la ganancia de peso vivo, el consumo de materia seca y el índice de conversión alimenticia (ICA). El patrón de respuesta a los AO en ganancia de peso e ICA fue cuadrático y significativo (p<0.035 y p<0.005, respectivamente), donde la máxima ganancia de peso estuvo asociada con un nivel de 173 ppm de AO y el nivel de 152 ppm de AO produjo el mejor ICA. El consumo de materia seca no se vio afectado por los tratamientos. Se concluye que la suplementación con ácidos orgánicos mejora la ganancia de peso e ICA en la etapa de crecimiento y engorde de los cuyes.Palabras clave: cuy, ácidos orgánicos, parámetros productivos ABSTRACTThe objective of the study was to evaluate the effect of the supplementation of organic acids (AO) on the productive parameters of guinea pigs (Cavia porcellus). Eighty male guinea pigs were randomly distributed in 20 experimental units, and these

Effect of supplementation with organic acids on productive and reproductive parameters in guinea pigs

“…Regarding the control group (118.6g), treatment 3 in doses of 5 days obtained the highest value (147.7g) compared tos other experimental groups (Table 2). This shows a significant difference (p <0.05) between treatments, which suggests that if there is a positive effect of these organic acids on the weight with which the kits are born (Sánchez-Silva et al, 2014;Upadhaya et al, 2014). Saying this, it is possible that the supplementation with these organic acids added to the diet of the pregnant female has had a direct influence (p <0.05) on the development of the fetus, finally favoring the weight of the kitten (Guevara et al, 2015;Dittoe et al, 2018).…”

“…The present study did not find a treatment that shows outstanding results for all the parameters evaluated, making use of organic acids (citric acid, propionates and phosphates) potentially due to the normal conditions of a guinea-pig production system. At the literature level, studies with organic acids in guinea pigs are reported, mainly evaluating productive parameters in breeding guinea pigs (Bazay et al, 2014;Sánchez-Silva et al, 2014;Cano et al, 2016), who evaluate only weight gain, dry matter intake and food conversion index, possibly due to the reported positive influence on intestinal cell proliferation.…”

“…In relation to the productive parameters such as weight gain, weights between 733.7 to 824.4g were achieved for the reproductive females of the different treatments (Table 1); Regarding the control group (745.4g), treatments 2 and 3 reported higher weights than the control group (p> 0.05). This difference may be due to the fact that the dose of organic acids used presents a positive influence on the assimilation of nutrients and increased metabolism (Suryanarayana et al, 2012;Upadhaya et al, 2014;Ke et al, 2017), influence on the maturity of the villi and intestinal physiology of the species (Sánchez-Silva et al, 2014;Xiong et al, 2019), as well as in the forage fermentation (Ke et al, 2017). However, this difference was not significant (p> 0.05) for the 3 treatments, potentially due to the poor monitoring of the weights, due to the condition of pregnant breeders, and the risk of handling that it represents for these animals.…”

“…For the treatment of diseases, growth promoting antibiotics (APC) are an alternative as a preventive measure (Gonzáles et al, 2013;Sánchez-Silva et al, 2014); however, improper handling generates problems in animal and public health, linked to residues in animal products and by-products, as well as the risk of causing antibiotic resistance (Upadhaya et al, 2014). This motivated a search for natural alternatives, such as acidifiers, on which various results have been reported on the productive parameters in different animal species (Upadhaya et al, 2014;Xiong et al, 2019).…”

“…In this group of acidifiers, the organic acids are safe substances that do not leave residues in animal products (Sánchez-Silva et al, 2014). The term "organic acids" describe a group of short-chain fatty acids, among these are: the Acetic, propionic, butyric, lactic, fumaric, malic, citric, benzoic acid, among others (Waldroup et al, 1995;Bourassa et al, 2018), some of which are related to stimulating effects on the immune system (Liu et al, 2018).…”