Oh SeungMin, Hosseindoust Abdolreza, Ha SangHun, Moturi Joseph, Mun JunYoung, Tajudeen Habeeb, Kim JinSoo
Gyeongbuk Livestock Research Institute, Yeongju 63052, Korea.
Department of Animal Industry Convergence, Kangwon National University, Chuncheon 24341, Korea.
Metabolites. 2022 Mar 23;12(4):280. doi: 10.3390/metabo12040280.
Heat stress is an important issue, and the addition of fiber to the diet is an option in modifying intestinal health. This study evaluated the effect of acid detergent fiber (ADF) levels on reproductive performance, intestinal integrity, and metabolism of gestating sows, and its carry-over effect on the lactation period during heat stress. The diets included 4.3% (Low fiber; LF), 5.4% (Medium fiber; MF), and 6.5% (High fiber; HF) ADF. Sows fed the HF diet showed a lower respiratory rate, hair cortisol concentration, and farrowing duration compared with the LF treatment. The HF diet increased the pyruvate, citrate cycle, glyoxylate, dicarboxylate, and thiamine metabolism compared with the MF. The concentration of acetate and total short-chain fatty acids were increased in the sows fed the HF diet. The gene expression of glucose transporter 3 and glucose transporter 4 was increased in the HF treatment. The gene expression of heat shock protein 70 was decreased in the HF treatment. The HF diet during gestation increased feed intake, constipation index, piglet weight, and litter weight compared with the LF. Sows in the LF treatment showed the greatest digestibility of crude protein and the lowest digestibility of ADF. In conclusion, a 6.5% ADF level is recommended for gestating sows during heat stress.
热应激是一个重要问题，在日粮中添加纤维是改善肠道健康的一种选择。本研究评估了酸性洗涤纤维（ADF）水平对热应激期间妊娠母猪繁殖性能、肠道完整性和代谢的影响，以及其对哺乳期的延续效应。日粮中ADF含量分别为4.3%（低纤维；LF）、5.4%（中纤维；MF）和6.5%（高纤维；HF）。与LF处理相比，饲喂HF日粮的母猪呼吸频率、毛发皮质醇浓度和产仔持续时间较低。与MF相比，HF日粮增加了丙酮酸、柠檬酸循环、乙醛酸、二羧酸和硫胺素代谢。饲喂HF日粮的母猪乙酸和总短链脂肪酸浓度升高。HF处理中葡萄糖转运蛋白3和葡萄糖转运蛋白4的基因表达增加。HF处理中热休克蛋白70的基因表达降低。与LF相比，妊娠期间的HF日粮增加了采食量、便秘指数、仔猪体重和窝重。LF处理的母猪粗蛋白消化率最高，ADF消化率最低。总之，热应激期间妊娠母猪建议使用6.5%的ADF水平。
