Tartrakoon Wandee, Tartrakoon Tinnagon, Kitsupee Nattporn
Department of Agricultural Science, Faculty of Agriculture, Natural Resource and Environment, Naresuan University, Phitsanulok 65000, Thailand.
Faculty of Sciences and Agricultural Technology, Rajamangala University of Technology Lanna, Phitsanulok Campus, Chiang Mai 50300, Thailand.
Anim Nutr. 2016 Jun;2(2):79-85. doi: 10.1016/j.aninu.2016.03.004. Epub 2016 Mar 19.
The effects on finishing pigs (80-100 kg BW) fed diets supplemented with oil sources containing different ratios of unsaturated to saturated fatty acids (UFA:SFA ratio) were evaluated in 15 barrows and 15 gilts (Duroc × Large White × Landrace). Three experimental diets were evaluated using a randomized complete block design, with broken rice, soybean meal and rice bran as the main feedstuffs in the control diet. Diets 2 and 3 consisted of the control diet supplemented with 3% oil, with UFA:SFA ratios of 2.5:1 and 5:1, respectively. Overall, there was no significant difference ( > 0.05) found in the average daily gain (ADG) of the pigs fed the treatment diets; however, the pigs fed the control diet and diet 3 had better ( < 0.05) feed conversion ratios (FCR) than the pigs fed diet 2. The pigs fed diets 2 and 3, which were supplemented with oil at UFA:SFA ratios of 2.5:1 and 5:1, had greater ( < 0.05) average daily feed intakes (ADFI) than the pigs in the control group. Additionally, it was found that the gender of the pigs had an effect ( < 0.05) on the FCR. Interaction effects between the experimental diets and the gender of the pigs ( < 0.05) were found in the ADFI and FCR. There were no significance differences ( > 0.05) among the treatment groups with regard to the carcass quality of the pigs; however, it was found that the gilts had greater ( < 0.01) loin eye areas than the barrows fed diets 2 and 3 and the loin eye area of pig fed diet 2 was the largest ( < 0.05). In the case of the meat quality parameters, it was clearly found that the pigs fed the control diet had a greater ( < 0.05) lightness (L) in the meat colour, and the lowest cooking loss was found in the pigs fed the diet supplemented with fat containing the UFA:SFA ratio of 5:1. Overall, the dietary treatment did not significantly affect the drip loss, thawing loss and shear force of the pork. In conclusion, the supplementation of oil with UFA:SFA ratios of 2.5:1 and 5:1 has the potential to improve pork quality.
以15头公猪和15头母猪（杜洛克×大白猪×长白猪）为试验对象，评估了在含不同不饱和脂肪酸与饱和脂肪酸比例（UFA:SFA比例）油脂来源的日粮喂养下，育肥猪（体重80 - 100千克）的生长性能。采用随机完全区组设计评估三种试验日粮，对照日粮以糙米、豆粕和米糠为主要原料。日粮2和日粮3由对照日粮添加3%油脂组成，UFA:SFA比例分别为2.5:1和5:1。总体而言，采食处理日粮的猪平均日增重（ADG）无显著差异（P>0.05）；然而，采食对照日粮和日粮3的猪的饲料转化率（FCR）优于采食日粮2的猪（P<0.05）。采食UFA:SFA比例为2.5:1和5:1油脂添加日粮的猪，其平均日采食量（ADFI）高于对照组猪（P<0.05）。此外，发现猪的性别对FCR有影响（P<0.05）。在ADFI和FCR方面，发现试验日粮与猪的性别之间存在交互作用（P<0.05）。各处理组猪的胴体品质无显著差异（P>0.05）；然而，发现母猪的眼肌面积大于采食日粮2和日粮3的公猪，且采食日粮2的猪的眼肌面积最大（P<0.05）。在肉质参数方面，明显发现采食对照日粮的猪肉色亮度（L）较高（P<0.05），而采食UFA:SFA比例为5:1的含脂日粮的猪烹饪损失最低。总体而言，日粮处理对猪肉的滴水损失、解冻损失和剪切力无显著影响。总之，添加UFA:SFA比例为2.5:1和5:1的油脂有改善猪肉品质的潜力。
