Effect of increasing levels of fat-soluble and water-soluble vitamins on improving performance and plasma vitamin concentration in modern hybrids pig’s growth and finishing phase

ABSTRACT The objective was to evaluate the supplementation of fat-soluble and water-soluble vitamins on the performance and plasma concentrations of vitamins in modern hybrids pigs. A total of 144 commercial hybrid castrated male, 43.531 ± 1.099kg, were used in a randomized block design with six treatments, eight replicates and three animals per pen. The experimental treatments were different vitamin supplementation levels - 0, 25, 50, 75, 100, and 125% of the recommended by Rostagno et al. (2011) for male pigs in growth I (40 to 50kg), growth II (50 to 70kg), and finishing I (70 to 90kg) phases. For growth phases I and II, a linear effect (P<0.05) due to increase in vitamin supplementation was observed on performance. For finishing phase I and total phase, a linear effect (P<0.05) was observed with increased final average weight (FAW) and improved feed conversion ratio (FCR). For average daily weight gain (ADWG) and average daily feed intake (ADFI) a quadratic effect was observed (P<0.05). A linear (P<0.05) increase in plasmatic α-tocopherol and B12 was observed with the 125%. Thus, it is concluded that the 125% vitamin supplementation improved performance of modern hybrids pigs (40 to 90kg).

摘要 本研究旨在评估脂溶性维生素（fat-soluble vitamins）与水溶性维生素（water-soluble vitamins）补充剂对现代杂交肉猪生产性能及血浆维生素浓度的影响。本试验共选用144头商品杂交阉割公猪，初始体重为43.531±1.099kg，采用随机区组设计，设置6个处理组、8个重复栏，每栏饲养3头试验猪。试验设置6个维生素补充水平处理，分别为Rostagno等（2011）推荐的生长I期（40~50kg）、生长II期（50~70kg）及育肥I期（70~90kg）阶段公猪维生素需求量的0%、25%、50%、75%、100%及125%。在生长I期与生长II期，试验猪的生产性能随维生素补充水平提升呈线性效应（P<0.05）。在育肥I期及全期试验中，试验猪的平均终末体重（final average weight, FAW）与饲料转化率（feed conversion ratio, FCR）随补充水平提升呈线性效应（P<0.05）；而平均日增重（average daily weight gain, ADWG）与平均日采食量（average daily feed intake, ADFI）则呈二次效应（P<0.05）。当补充水平提升至125%时，试验猪血浆α-生育酚与维生素B12浓度呈线性升高（P<0.05）。综上，125%的维生素补充水平可改善40~90kg体重阶段现代杂交肉猪的生产性能。