In recent years, the phenomenon of biting pigs in large-scale pig farms has gradually increased, especially in weaned pigs, which seriously affects the health and growth performance of pigs. According to relevant data, the growth rate of these pigs is lower than that of normal pigs. 26% to 30%. Pigs bite each other, sometimes referred to as "anti-discomfort syndrome", because any adverse environmental factors will lead to this phenomenon, a greater harm, so it must be targeted to prevent, according to the author's practice in recent years, summary The factors that caused the pigs to bite each other and preventive measures. 1 Influencing factors 1.1 Nutritional factors Under the condition of feeding, the various nutrients needed for pig growth depend on the feed supply. When the nutrients of the feed are not balanced, the pigs develop stress, such as: poor protein, vitamins, iron, copper, calcium and Insufficient cellulose causes biting. 1.2 Environmental factors The poor sanitary conditions in the house, indoor air does not circulate, resulting in high concentrations of CO2, NH3, H2S, light is too strong, the pigs can not get rest, but also can promote bite fighting. 1.3 Management factors Breeding density, irrational grouping, uneven size, strengths and weaknesses, regardless of variety, resulting in weight differences, in order to compete for grab positions for disputes bite. 1.4 Disease factors Epidermal parasites stimulate the skin. The consumption of nutrients by the internal parasites can cause irritability to the herd. This can cause friction in the pens. Once a traumatic injury occurs, it can cause bites in other pigs. 1.5 After sorting and strangling the pigs, the social order of the original herd was destroyed and a new order needed to be established. 2 Preventive measures 2.1 Meet the nutritional needs of pigs When biting phenomenon occurs, a variety of vitamins and minerals must be added to the feed. Simultaneously feeding should be done regularly and no mildew feed should be provided. 2.2 Reasonable grouping, breeding density appropriate species separate, size separate, male and female separate, strong and weak separation. To ensure that each pig's water intake position, 3 to 4 months fat pig should reach 0.5 to 0.6 square meters / head. 2.4 After piglets are born, they should be tailed within 1 to 2 days. Generally, the position of the tail should be separated from 1/3 of the tail, and hemostasis should be done at the same time. 2.5 Regular deworming is generally carried out in groups of 30, 60, and 120 days after birth, and the deworming is done simultaneously with deworming both inside and outside the body.
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2.3 The environment is well-ventilated, the temperature is suitable, the floor is dry, and the light is moderate.
Pigs fighting each other's precautions
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