不同来源和水平粗纤维对生长肥育猪日粮生产性能、脂肪酸分布和胴体性状的影响

G. M. Cornescu, T. Panaite, M. Ropotă
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引用次数: 1

摘要

摘要本研究探讨了在生长肥猪日粮中添加不同来源和水平的纤维(6.5%和7.5%)的可能性。试验选用初始平均体重为25.25±2.11 kg的杂交TOPIGS去势公羊9只,随机分为3个试验组,每组3个重复。对照组(C)饲喂以3.5%粗纤维(CF)为基础的玉米、小麦和大豆基础饲粮,试验组E1为6.5%粗纤维(4%苜蓿粕和12.36%葵花粕),E2为7.5%(6%苜蓿粕和18.38%葵花粕),降低了C(21.42%豆粕)中豆粕的饲粮添加率。试验期间记录仔猪初、末体重、平均日采食量和剩余物,计算平均日增重和饲料系数。试验结束后,屠宰猪,测定胴体性状和肉质参数。生产性能不受纤维含量来源和水平的影响。E1组肩部和腹部样品的饱和脂肪酸(SFA)值显著高于C组,E2组乳房样品的饱和脂肪酸(SFA)值显著高于C组(P<0.05)。在E1上,火腿、牛里脊、猪排、肩胛、胸肉的MUFA浓度显著升高(P<0.05)。E2中PUFA, Ω:6的浓度在除颈部外的所有肉类样品中均有显著差异(P<0.05)。按照SEUROP体系分类,纤维素含量为6.5%(50%为S级,50%为E级)的E1组的胴体分类效果最好。本研究认为,饲粮中添加苜蓿粕和向日葵粕的比例对生产性能没有影响,但平均肌肉厚度和肉率低于c组。在相同原料条件下,改变添加比例的进一步研究应以胴体性状结果为重点。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Influences of different sources and levels of crude fiber on performances, fatty acids profile and carcass traits in growing-fattening pigs’ diet
Abstract The present study has investigated the potential of including different sources and levels of fiber (6.5% and 7.5%) in growing-fattening pigs’ diet. The nine weeks feeding trial was conducted on nine hybrids TOPIGS castrated males with an initial average weight of 25.25±2.11 kg, randomly assigned to 3 experimental groups with 3 replicates per group. The control group (C) was fed with a corn, wheat and soybean basal diet and it was characterized by 3.5% crude fiber (CF), the experimental groups E1 had 6.5% CF (4% alfalfa meal and 12.36 % sunflower meal) and E2 had 7.5% (6% alfalfa and 18.38% sunflower meal) decreasing the dietary rate inclusion of soybean meal from C (21.42% soybean meal). Bodyweight (initial, final), average daily feed intake (ADFI), leftovers were registered and average daily gain (ADG), feed conversion ratio (FCR) were calculated during the experiment. At the end of the study, the pigs were slaughtered for the determination of carcass traits and meat quality parameters. The productive performances were not influenced by the source or level of the fiber content. The saturated fatty acid (SFA) values were significantly different (P<0.05) in E1 group for shoulder and belly samples compared to C and for breast samples on E2. Higher MUFA concentrations significantly different (P<0.05) were noticed for ham, sirloin, rack, shoulder, breast on E1. PUFA, Ω:6 concentration shown significant differences (P<0.05) within E2 to all meat samples collected, except the neck. The best carcass classification results were recorded in the E1 with 6.5% cellulose (50% Class S and 50% Class E) according to the SEUROP system classification. The study concluded that the dietary percentages of alfalfa meal and sunflower meal did not compromise productive performances but the average muscle thickness and meat percentage registered lower values compared with group C. Further studies with the same raw materials but changing the inclusion percentages should have experimented with emphasis on carcass traits results.
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