Evaluación de una premezcla gluconeogénica sobre el comportamiento productivo y sus modificaciones del tejido magro en canales de cerdos

Abstract

The objective of this research was to evaluate the effect of a gluconeogenic premix on productive behavior and its modifications of lean tissue in pig carcasses. This research was carried out on the premises of the Querochaca Experimental Farm, belonging to the Faculty of Agricultural Sciences at the Technical University of Ambato, in which nine Duroc x Pietrain castrated male pigs with an initial average weight of 50 kg were used. The variables analyzed were productive yield, nutrient digestibility, lean tissue modifications, and benefit-cost ratio. For this purpose, three treatments were evaluated: T1=0.0 Kg/Tn of gluconeogenic premix (Inkreb) as a replacement for 0% of net energy, provided by palm oil; T2= 0.25 Kg/Tn of gluconeogenic premix (Inkreb) as a replacement for 25% of net energy, provided by palm oil and T3= 0.50 Kg/Tn of gluconeogenic premix (Inkreb) as a replacement for 50% of net energy, contributed by palm oil. A completely randomized design was used with three treatments and three repetitions, with a total of nine experimental units made up of one pig each. The analysis of variance was performed with the Tukey test at 5% significance. The administration of T2 showed a better productive performance, particularly in the final weight, weight gain and feed conversion. Differences were particularly observed in the consumption of crude protein, neutral detergent fiber and acid detergent fiber, with the inclusion of T2. The impact was more pronounced in pigs weighing between 50 and 70 kg. However, the digestibility of nutrients only showed differences in the protein. The inclusion of T2 increased the area of Longissimus dorsi and reduced drip losses at 24 and 48 hours compared to the other treatments. However, variables such as backfat thickness, crude fat, and pH did not show significant differences. Economically, T2 outperformed with a discounted net profit of $49.20 and a benefit cost ratio of $0.04.