Tesis Medicina Veterinaria y Zootecnia

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Author: search.filters.author.Almeida Enríquez, Catherine BelénSubject: search.filters.subject.VETERINARIA

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    Evaluación del aceite de palma y premezcla gluconeogénica sobre el comportamiento productivo en cerdas primíparas
    (2024-08) Almeida Enríquez, Catherine Belén; Guerrero López, Jorge Ricardo
    The aim of this study was to evaluate the effects of palm oil and a gluconeogenic premix on the productive performance of primiparous sows. The research took place on the premises of the pig producer "Martita" located in the parish of Checa, canton Quito, and province of Pichincha. The study included 10 nulliparous Landrace x Yorkshire crossbred sows with an average weight of 80 kg +/- 10 kg in which two treatments were tested: T0 = 0% energy replacement (kcal) provided by palm oil, with a gluconeogenic premix and T1 = 100% energy replacement (kcal) provided by palm oil, with a gluconeogenic premix. For each treatment, five repetitions were used per treatment, integrating one sow per repetition. In the comparison of means, the T Student statistical test was used with a confidence level of 95%. The variables analyzed in this study included backfat thickness, feed intake during gestation and lactation, weight gain, piglet weight at birth and weaning, litter size, pre-weaning mortality, weaning-oestrus interval, pregnancy rate and partial costs. The results reported that replacing 100% of the energy provided by palm oil with a gluconeogenic premix significantly impacted cumulative feed intake especially during the last weeks of gestation and at the beginning of the lactation stage. However, it did not significantly affect the average daily feed intake in the two stages. Similarly, T1 considerably reduced backfat thickness during these periods. On the other hand, significant differences were observed in the weight of piglets from sows fed with the gluconeogenic premix, during birth and weaning, being these higher compared to the control group. In addition, the pre-weaning mortality rate was significantly lower in the T1 group. Finally, in the cost analysis, although the total cost was slightly higher for the T1 group due to the higher intake, it should be stressed that the improved results, such as piglet weight and reduced pre-weaning mortality, indicate that the benefits could justify the additional expense.