When it comes to the history of the teaching material, the feeding material was used when weaning at 6-8 weeks of age, mainly to overcome the problem of weaning weight loss caused by insufficient breast milk. With the rapid development of breeding technology, culture technology and feed technology, people usually use weaning at 3 to 4 weeks of age. Therefore, the significance of the teaching material is not only to improve the weaning weight, but more importantly, to help the suckling pig overcome the weaning. Stress.
Why does the teaching material help the suckling pig overcome the weaning stress? First, it is the feed that the suckling pig eats before weaning. At this time, it can stimulate the digestive tract of the suckling pig to adapt to the feed and accelerate the development of the digestive tract, thus ensuring that the suckling pig can digest and absorb the feed well after weaning. Another important reason is the use of the teaching material before weaning, which allows the suckling pig to realize that the feed is edible, so that the suckling pig can more easily eat the feed after weaning. To sum up, it is a sentence: the teaching material is the feed for the church suckling pigs.
In order to achieve the above objectives, excellent teaching materials should have the following characteristics:
1. High digestibility of raw materials, among which anti-nutritional factors, especially allergenic factors, are low in content;
2, the palatability of raw materials is good;
3, contains a large number of substances to promote intestinal health;
4, nutrition is comprehensive and balanced, suitable for digestion and absorption.
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