Occurrence and prevention of pig bite and fighting

I. the cause of the pig bite phenomenon

1. The probability of contact and conflict among pigs with excessive feeding density is also high, and their activities are limited, which is the inducement of bite-and-fight phenomenon. In addition, there is a unique group order behavior, after grouping pigs, they will bite each other at first, and then establish an obvious rank relationship according to the strength of the physique. If the herd of pigs is too large, it is difficult to establish a position, resulting in frequent bites and fights with each other.

two。 Feed nutrition imbalance the use of non-full price feed or the improper proportion of nutrients in feed, especially the insufficient or improper proportion of protein, vitamins, minerals and salt in feed.

3. Stress factors such as abnormal weather changes, high temperature, excessive temperature, excessive concentration of harmful gases in the house, too strong light, being frightened and so on.

4. Non-self-breeding pigs live in groups that have peculiar smells and bite fights. Pigs in the same group distinguish smells by their sense of smell and are familiar with each other. If fattening pigs are not self-breeding, but have different sources, biting fights are easy to occur when pigs are grouped.

5. Other factors, such as the lack of material trough or insufficient location of drinking water, are prone to bite each other for food and water. There are parasites inside and outside the body, such as lice, scabies mites, roundworms, etc., pig skin itching and irritation, will also bite.

Measures to prevent pigs from biting and fighting with each other

1. The feeding density should be suitable for large-scale, and each pig should occupy an area of 1 square meter, and the feeding density should not be too large.

two。 Feeding groups should be reasonable. Pigs raised in the same column differ greatly in weight, and pigs with small body weight and weak body are often bitten. Once one is bitten, it will rise up and develop into biting each other's ears and tails. Pig groups with similar source, body weight, physique, temperament and feeding habits should be raised, and about ten pigs in each group should be raised.

3. Feed nutrition should be comprehensive if lack of nutrition will not only affect the growth and development of pigs, but also cause pigs to bite each other. Therefore, comprehensive and nutritious formula feed should be fed according to the needs of different growth stages of pigs, especially the lack of protein, vitamins and trace elements.

4. Adequate feeding methods must be used to avoid strong hunger in pigs if the feeding method is appropriate. Conditional pig farms can feed green succulent feed such as weeds and grasses to the enclosure regularly and quantitatively every day for pigs to eat.

5. Regular deworming, timely tail amputation, preventive deworming of pigs every spring and autumn respectively. The parasites in the body are generally deworded for 3 times. The first deworming was carried out at 30 days old, the second at 60-70 days old, and the third at 100-110 days old. Breeding pigs should be dewormed twice a year. Deworming drugs can be used such as levamisole, albendazole and ivermectin. The piglet's tail was cut off within 2 days after the piglet was born.