Pig pica is a stress syndrome caused by improper feeding and management, environmental discomfort, unbalanced dietary nutrient supply, disease and metabolic dysfunction. Specific performance and clinical symptoms: The main manifestations are biting tail, biting ears, biting ribs, sucking the navel, feces, drinking water, urine, arch, nocturnal circle, wall, jumping column and so on. Mutual fighting is a relatively unpleasant phenomenon. Pigs with different foods are uncomfortable, aggressive, fierce, and have increased activity. Feed intake is reduced and feed utilization rate is reduced. Etiology analysis and countermeasures:
I. Feeding density
Including breeding density is too large, feeding trough space is small, limited feeding and drinking water is insufficient, the size of the pigs in the same pen home is not the same, pigs may cause fighting due to new swarms, etc.
The solution: a reasonable breeding density such as nursery pig 0.6---0.8 square meters/head; fattening stage 0.9--1.3 square meters/head, big and small pigs only feeding in groups, and adding “Vibo†to feed or drinking water during the group migration ", or placing toys, etc. to draw the attention of the pig.
Second, environmental factors
Reasons for high rates in summer and autumn. Poor environmental conditions, such as too high or too low temperature in the house, poor ventilation and accumulation of harmful gases, strong light in the pigsty, pigs are excited and irritability; abnormal changes in the weather, wet skin caused by itching sty Such factors as causing discomfort to the pig or poor rest can all cause the occurrence of pica and other pica.
Solution: Improve the environmental sanitation of the pens, make the pigs have a quiet and comfortable living environment, add cool curtain fans and other reasonable cooling in summer hot season, add “cool summer (livestock special)†in drinking water, and relieve the heat Excited.
Third, varieties and individual differences
If pigs with different body weights or between the same breeds are oversized in the same pig pen, due to differences in their breeds and living characteristics, they are in conflict with one another and compete for one another to cause biting. The differences between individuals are large. In possession of sleeping areas and catching food, there is often a phenomenon of bullying.
Solution: The best way is to control the individual difference within 3 kg, avoid bullying and eating.
Diseases: Pigs suffer from ectoparasites such as lice and lice.
Can cause pig skin irritation and irritability, friction in the house resulting in ear, ribs, etc., there is exudation, and other pigs have an attraction to induce tail biting; pig parasites, especially pig aphids, Stimulate pigs to attack other pigs.
Solution: Do a good job in the deworming of the herd, one month after the gilt is bought back, the deworming is done once, then like the sow, the deworming is done four times a year; the growing pig is one month after the reinsurance and before the slaughter One month each deworming time.
V. Unbalanced Nutrition Supply
When feed nutrient levels are lower than the feed standards and cannot meet the nutritional needs of pig growth and development, biting tail can occur. In addition, various trace nutrients in the diet are imbalanced, such as the deficiency or imbalance of potassium, sodium, magnesium, iron, calcium, phosphorus, and vitamins in the diet. All kinds of emergency situations will cause the pig's endocrine system to make the appropriate deployment.
Solution: According to the nutritional needs of the pig's diet, various nutrients can be reasonably added to meet the nutritional needs of the pig.
In short, according to the overall situation of the pigs, to make reasonable judgments, the symptomatic treatment will minimize the harm of pica and ensure the healthy growth of the pigs is our goal.
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