Zhang Ge, Huang Jingyi, Sun Zhiqiang, Guo Yuhan, Lin Gang, Zhang Zeyu, Zhao Jinbiao
State Key Laboratory of Animal Nutrition and Feeding, College of Animal Science and Technology, China Agricultural University, Beijing 100193, China.
Beijing Alltech Biological Products (China) Co., Ltd., Beijing 100600, China.
Antioxidants (Basel). 2024 Oct 12;13(10):1227. doi: 10.3390/antiox13101227.
This study investigates the effects of oil quality and trace mineral source on the growth performance, antioxidant activity, and meat quality of growing-finishing pigs. A total of 180 crossbred pigs (Duroc × Landrace × Large White [64.4 ± 1.95]) were randomly allocated five dietary treatments based on body weight (BW) and sex in a 30 d trial. Pigs were fed five diets: (i) fresh soy oil + inorganic trace minerals (ITMs) + inorganic selenium (FISI), (ii) oxidized soy oil + ITMs + inorganic selenium (OISI), (iii) fresh soy oil + ITMs + selenium yeast (FISY), (iv) oxidized soy oil + ITMs + selenium yeast (OISY), and (v) oxidized soy oil + organic trace minerals (OTMs) + selenium yeast (OOSY). Each dietary treatment included six replicates and six pigs per replicate (three barrows and three gilts). Feeding OISI resulted in lower average daily gain (ADG) and dressing percentage ( < 0.05). The OOSY group had a higher dressing percentage and activities of serum CAT and GSH-Px in growing-finishing pigs ( < 0.05). In addition, the relative abundance of Campylobacterota in the colonic digesta varied with the quality of soy oil and source of trace minerals ( < 0.05), but no significant differences in short-chain fatty acid concentrations were observed among all dietary groups. In conclusion, adding oxidized soy oil to the diet negatively impacted the ADG and dressing percentage of growing-finishing pigs, and replacing ITMs with OTMs and SY alleviated these negative impacts. A combination of OTMs and SY can support antioxidant capacity to mitigate the negative impacts of oxidized oil on the growth performance and dressing percentage of growing-finishing pigs.
本研究调查了油脂品质和微量矿物质来源对生长育肥猪生长性能、抗氧化活性和肉质的影响。在一项为期30天的试验中，根据体重（BW）和性别，将总共180头杂交猪（杜洛克×长白×大白[64.4±1.95]）随机分配到五种日粮处理组。给猪饲喂五种日粮：（i）新鲜大豆油+无机微量矿物质（ITMs）+无机硒（FISI），（ii）氧化大豆油+ITMs+无机硒（OISI），（iii）新鲜大豆油+ITMs+酵母硒（FISY），（iv）氧化大豆油+ITMs+酵母硒（OISY），以及（v）氧化大豆油+有机微量矿物质（OTMs）+酵母硒（OOSY）。每个日粮处理组包括六个重复，每个重复六头猪（三头公猪和三头母猪）。饲喂OISI导致平均日增重（ADG）和屠宰率降低（P<0.05）。OOSY组生长育肥猪的屠宰率以及血清CAT和GSH-Px活性较高（P<0.05）。此外，结肠食糜中弯曲杆菌门的相对丰度随大豆油品质和微量矿物质来源的不同而变化（P<0.05），但所有日粮组之间短链脂肪酸浓度未观察到显著差异。总之，日粮中添加氧化大豆油对生长育肥猪的ADG和屠宰率有负面影响，用OTMs和酵母硒替代ITMs可减轻这些负面影响。OTMs和酵母硒的组合可支持抗氧化能力，减轻氧化油对生长育肥猪生长性能和屠宰率的负面影响。
