Management of piglets during weaning

(I) stress to piglets during weaning

During weaning, piglets will encounter various stresses in the internal and external environment. At the same time, from eating liquid nutritionally comprehensive and digestible breast milk to completely eating compound feed, the gastrointestinal tract also needs a gradual adaptation process. In this process, the gastrointestinal tract itself is also growing and developing, and the secretion of digestive juice components has also changed. Adapt to match the diet. Sometimes some farmers combine for the convenience of management, and the establishment of individual order among pigs needs to be completed by fighting, which is also a strong stress for piglets. According to statistics, the mortality rate of piglets during weaning accounts for 40% of the total mortality rate, which shows how much proportion this stage should account for in feeding and management.

Key Points of (II) Management

1. Temperature. Weaning piglets body temperature regulation ability is not yet perfect, need a 26~28C comfortable temperature environment. Generally speaking, cold stress is harmful to piglets. It can cause the level of epinephrine in the blood to rise exponentially, resulting in slow growth of piglets, low immunity, and susceptibility to infectious gastroenteritis, pneumonia, diarrhea and other diseases.

Disease, there are tests that show that in 10.The daily weight gain of piglets in the environment of 28 ℃ decreased by 60%, while the diarrhea rate increased by 1 times. Below the comfortable temperature, the metabolic energy of the diet needs to be increased by 5% for every 1 ℃ decrease.

2. Humidity. During weaning, the appropriate humidity is65% ~ 70%, too wet will cause skin

Inflammation, scabies and other diseases, too dry can cause dust increased, induced breathing disease, atrophic rhinitis and other diseases. 3. Density. During weaning, the density is higher, which is beneficial to the heat preservation of piglets, but at the same time, the vicious behaviors such as fighting, tail biting and ear biting are increased, generally 0.42 square meters per piglet is appropriate, and the piglets are also provided with exercise places to facilitate sunlight exposure and bone development.

(III) feeding management

1. Provide enough open food. Although the sow 3~4 weeks of age when the amount of lactation reached the peak, but relatively can not meet the needs of piglets, in 7~10 days of age when the supply of piglets feed, to promote the early development of piglets digestive organs, enhance nutrition, improve resistance, prevent food, reduce the occurrence of dysentery is particularly important. In order to achieve this, the following measures can be taken: a small number of meals to stimulate the appetite of piglets; increase sweetness and other attractants; appropriate restrictions on sows before weaning to reduce lactation, forcing piglets to eat more feed.

2. Provide high-quality open food. Due to the imperfect gastrointestinal function of piglets, high protein and high energy diets may not bring good results. Soybean is the main raw material to provide plant protein, but it contains anti-trypsin antigen, which will cause severe diarrhea in piglets 5 days after feeding. Therefore, the supply of plant protein should not exceed 40% of the total protein content in the diet.appropriate. On the contrary, skimmed milk powder and whey powder not only contain animal protein that is easy to digest and absorb, but also contain substances that antagonize pathogenic bacteria, so the protein in the diet during weaning should be animal protein. In addition, to weaned piglets to provide high metabolic energy of the diet is also inseparable from the fat, including short chain fatty acids and long chain unsaturated fatty acids are relatively easy to absorb, dietary vegetable oil and animal oil mixture than simple animal oil is more conducive to the demand of weaned piglets.

Crude fiber for piglets almost does not provide nutrition, but can make piglets have a sense of satiety, appropriate crude fiber can absorb a large amount of water in the feces, but also can alleviate the high protein feed caused by the feces thin condition, so weaned piglets in the diet of crude fiber is also indispensable, with 4% is appropriate.

3. Diet to add organic acids or inorganic acids, probiotics, antibacterial drugs. The addition of acids can not only activate pepsin, but also have a significant effect on reducing intestinal pH and inhibiting diarrhea caused by harmful bacteria. The use of probiotics, due to its complex role in the intestinal tract, to promote growth, improve feed utilization and prevent Escherichia coli, Salmonella caused by dysentery also has a significant role. Adding antibacterial drugs such as bacitracin zinc and oxytetracycline to weaning diets also has a significant effect on preventing diarrhea and increasing daily gain during this transition period.

4. The feeding system. During weaning, the original feeding system should be maintained as much as possible. The higher the feeding frequency, the less chance of diarrhea. After weaning, piglets usually take a large amount of food to replace the feed provided by milk. This diarrhea caused by excessive accumulation of food in the gastrointestinal tract can be corrected in time through the next meal. Generally, it can be allowed to eat freely after 4-5 days.