幼兔在断乳后由于其机体发育尚不完善，在失去乳中活性物质的供给后，消化道内pH值降低，体内分泌消化酶的能力也相应降低，导致分泌消化酶的速度满足不了对饲料中淀粉的消化需求。而淀粉主要由胰脏分泌的胰淀粉酶在小肠内分解为葡萄糖进行消化吸收。
In rabbits after weaning because of its body development is not perfect, the loss of active substances in milk supply, gastrointestinal pH value decreased, the body secretes digestive enzymes ability decreased, resulting in the secretion of digestive enzymes to the feed speed can not meet the needs of starch digestion. The starch is mainly secreted by the pancreas amylase in the small intestine into glucose for digestion and absorption.
正是由于淀粉消化酶的不足，导致小肠吸收葡萄糖的总量不足，引起机体血糖水平偏低而表现为幼兔低血糖体质。低血糖可连锁引起机体内的各种新陈代谢氧化还原反应降低，导致机体营养不良、生长速度缓慢、长毛免疫力下降等一系列不良后果，使得幼兔机体长期处于亚健康状态。
It is due to the lack of starch digesting enzymes, resulting in insufficient total amount of small intestinal absorption of glucose, resulting in low blood glucose levels in the body and the performance of young rabbits. Hypoglycemia can cause various chain oxidation in the body The new supersedes the old. reduction reaction, cause the malnutrition, slow growth, high immunity and a series of adverse consequences, the rabbit body sub-health state for a long time.
同时，长毛免当小肠未消化的大量淀粉进入后肠时，由后肠微生物对其发酵降解，淀粉发酵量的微小变化都可以影响纤维的分解活性；淀粉通过微生物发酵后主要产物是乳酸盐和挥发性脂肪酸，特别是乙酸、丙酸和丁酸的作用使得盲肠pH值显著降低，抑制了双歧杆菌、枯草杆菌等有益菌的活动；促进了大肠杆菌、产气荚膜梭菌（魏氏梭菌）等有害菌的大量繁殖。大量有害菌代谢活动所产生的毒素又通过血液循环到达机体各个部位，可对肝脏造成损害引起肝脏功能降低，加之低血糖引发肝糖元低所导致的肝脏血液循环不畅，使得肝脏解毒功能降低；毒素还进一步抑制植物性神经使其兴奋性降低，从而导致盲肠蠕动性降低，使得饲料在盲肠内停留时间延长，这更加剧了有害菌的活动。
At the same time, hair free when a large amount of starch in the small intestine undigested into the intestine, intestinal microorganism on the fermentation by degradation, small changes in the amount of starch fermentation can affect the decomposition activity of fiber; starch by microbial fermentation is the main product of lactate and volatile fatty acids, especially acetic acid, propionic acid and butyric acid. The effect of pH value of cecum significantly, inhibition of Bifidobacterium, Bacillus subtilis and other beneficial activities; promote the Escherichia coli and Clostridium perfringens (Clostridium) blooms of harmful bacteria etc.. A large number of harmful bacteria in the metabolic activity of the toxin produced by the blood circulation to all parts of the body, can cause damage to the liver caused by liver dysfunction, liver glycogen and lead to hypoglycemia caused by low liver blood circulation, reduce liver detoxification function; toxin also further inhibit the autonomic nerve to reduce excitability, leading to cecal peristalsis is reduced, the feed stays in the cecum is prolonged, which is exacerbated by the harmful bacteria activity.
在幼兔的日粮配合中使用可直接被机体吸收的葡萄糖（或饲料葡萄糖）替换大部分甚至全部玉米，并适当增加日粮中纤维素（尤其是木质素）含量，可有效地预防幼兔腹胀、腹泻的发生，提高了幼兔出栏成活率。该新技术在吉林、湖南、重庆等地区一些集约化兔场长达数年的生产实践中证实确是一项行之有效的创造。在任意采食情况下，幼兔的出栏成活率可稳定在90%以上，75天出栏均重达2.3公斤。该技术如在全国推广应用，将极大提高养兔的生产效益，推动我国养兔业走上一个崭新的台阶。
In the diet of rabbits with use can be directly absorbed by the body's glucose (or glucose feed) replace most or all of the corn, and appropriately increase the cellulose diet (especially lignin) content, can effectively prevent the occurrence of rabbit abdominal distension and diarrhea, improve the survival rate of young rabbit slaughter. The new technology in Jilin, Hunan, Chongqing and other regions of the production practice of some intensive farm for several years that is a effective creation. In ad libitum conditions, rabbit slaughter survival rate can be stabilized at more than 90%, 75 days of slaughter were weighing 2.3 kg. This technology as applied in the country, will greatly improve the rabbit production efficiency, promote China's rabbit industry to a new step on.