Li Yang, Zhang Lijia, Liu Haoyu, Yang Yi, He Jiaqi, Cao Meng, Yang Min, Zhong Wei, Lin Yan, Zhuo Yong, Fang Zhengfeng, Che Lianqiang, Feng Bin, Xu Shengyu, Li Jian, Zhao Xilun, Jiang Xuemei, Wu De
Key Laboratory for Animal Disease-Resistance Nutrition of the Ministry of Education, Animal Nutrition Institute, Sichuan Agricultural University, Chengdu 611130, China.
Animals (Basel). 2019 Jul 5;9(7):422. doi: 10.3390/ani9070422.
To investigate the effects of the ratio of insoluble fiber to soluble fiber (ISF:SF) on sow performance and piglet intestinal development, we randomly assigned 64 gilts to four treatments comprising diets with the same level of dietary fiber, but different ISF:SF values of 3.89 (T1), 5.59 (T2), 9.12 (T3), and 12.81 (T4). At birth and weaning, six piglets per treatment at each phase were slaughtered for sampling. As ISF:SF increased, the mean piglet body weight (BW) at weaning and piglet BW gain, which were all significantly higher in T1 and T2 compared with T3 and T4 ( < 0.05), showed a linear decrease ( < 0.05); the crypt depth of the jejunum in weaned piglets linearly increased, whereas the duodenal weight, jejunal villus height, and villus height/crypt depth in newborn piglets and enzymatic activity of lactase, sucrase, and maltase linearly decreased ( < 0.05). No differences were observed in the yield and composition of milk ( > 0.05). Moreover, when the ISF:SF was 3.89 in gestation diets, higher piglet BW at weaning occurred, possibly because the ISF:SF affected development and enzymatic activity in the small intestine-effects related to digestion and absorption of nutrients-and consequently enhanced piglet BW gain.
为了研究不溶性纤维与可溶性纤维的比例（ISF:SF）对母猪生产性能和仔猪肠道发育的影响，我们将64头后备母猪随机分为四组，每组日粮的膳食纤维水平相同，但ISF:SF值不同，分别为3.89（T1）、5.59（T2）、9.12（T3）和12.81（T4）。在出生和断奶时，每个阶段每组选取6头仔猪屠宰取样。随着ISF:SF的增加，断奶时仔猪平均体重（BW）和仔猪体重增加量呈线性下降（P<0.05），T1和T2组的这些指标显著高于T3和T4组（P<0.05）；断奶仔猪空肠隐窝深度呈线性增加，而新生仔猪十二指肠重量、空肠绒毛高度、绒毛高度/隐窝深度以及乳糖酶、蔗糖酶和麦芽糖酶的酶活性呈线性下降（P<0.05）。牛奶产量和成分方面未观察到差异（P>0.05）。此外，妊娠日粮中ISF:SF为3.89时，断奶时仔猪体重较高，这可能是因为ISF:SF影响小肠的发育和酶活性，而这些影响与营养物质的消化吸收有关，从而提高了仔猪体重增加量。
