The function of cellulose in sow grain is not only its possible nutritional value, but also its physical properties. The use of natural fiber in sow diets is becoming more common and more important.

在妊娠阶段，纤维的重要功能是影响母猪的行为。纤维不仅会给母猪提供饱感，而且膨胀的纤维还有益于母猪为哺乳期高采食量所需的胃容积做好准备。

During pregnancy, the important function of fiber is to influence sow behavior. Fiber not only provides the sows with a sense of fullness, but also helps the sows prepare for the stomach volume needed for high feed intake during lactation.

总之，在转为高密度的哺乳饲料时，饲料的数量需要减少，以预防对乳房产生不必要的压力（乳腺炎、子宫炎、无乳综合征，MMA）。较少的采食量和较低的纤维水平带来更多的便秘问题。

In conclusion, when switching to high-density lactation feed, the amount of feed needs to be reduced in order to prevent unnecessary pressure on the breast (mastitis, endometritis, no milk syndrome, MMA). Lower feed intake and lower fiber level lead to more constipation problems.

便秘和肠道运转时间的减少会产生内毒素——革兰氏阴性菌的生长。内毒素会导致催乳素的形成和对免疫系统的刺激减少。这会降低乳的产生(无乳)，并提高发生乳腺炎的风险。

Constipation and reduced intestinal transit time produce endotoxin, the growth of Gram-negative bacteria. Endotoxin can lead to the formation of prolactin and reduce the stimulation to the immune system. This reduces milk production (no milk) and increases the risk of mastitis.

母猪便秘可能会产生机械性损伤，使母猪的产道变窄，由于较长的分娩间隔而导致更多的死胎。

Constipation of sows may cause mechanical damage, narrow the birth canal of sows, and lead to more stillbirths due to longer delivery interval.

借助高纤维型的过渡日粮来预防便秘是一个能够用于预防断乳不足并防止分娩期便秘的手段。因此，分娩前后由纤维刺激产生的高饮水量或许可防止MMA和便秘的发生。

The use of high fiber transition diets to prevent constipation is a means to prevent under weaning and to prevent constipation during childbirth. Therefore, the high amount of drinking water produced by fiber stimulation before and after delivery may prevent the occurrence of MMA and constipation.