Petrand pig
Petland pigs are produced in Belgium. The body is square, wide and short, with thin bones and short limbs and well-developed muscles. The hair is gray with black patches and the ears are moderately forward. The average litter size is about 10 piglets. It is reported that 90kg body weight growth fat has a carcass lean rate of 66.9%, a daily gain of 700g, and a feed efficiency of 2.65. The growth rate of commercial pigs decreased significantly after 90kg. Petland pigs have a severe stress response, and about 50% of pigs have halothane recessive genes. After crossing with purebred Petrand as male parent, gray meat (PSE meat) is easy to appear. Pettland can be crossed with Duroc or Hampshire pigs, and then the first generation of boars can be used as hybrid male parents, which can not only increase the lean meat rate but also reduce the occurrence of gray pork.
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Comprehensive prevention and control of pig tail biting disease
Pig tail biting is a kind of pica, which is a kind of stress syndrome caused by nutritional metabolic disorder, abnormal taste and improper feeding management. In particular, the incidence was higher in August-December and January-March, which generally occurred in 18-80 kg pigs and 24-40 kg pigs (12-14 weeks old). More sows than boars are affected. It is estimated that about 4.6% of boars and 3.4% of sows are bitten. First, the cause of the disease (1) improper feeding and management: high feeding density and the same column
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A simple method for identifying diseased pigs
1. Look at the eyes. In healthy pigs, their eyes are bright and bright, and it is a sign of illness if they are found to have dark, red and excessive droppings. 2. Look at the skin. Healthy pigs have smooth and round skin and plump muscles, such as rough and inelastic pigskin, with swelling, ulcers, erythema, rotten spots and so on. 3. Look at the coat color. Healthy pigs, the coat color is bright and shiny, if the pig hair is rough, inelastic and messy, it is a sign of illness. 4. Look at the nasal plate. A healthy pig with a wet nose plate with sweat balls; such as a pig nose plate.
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