Pig Breeding and Management Points
Grazing rearing sow management
The cultivation of gilts has a direct bearing on the initial age, age, and lifetime production. Most of us use imported varieties. These breeds share a common characteristic. Sexuality is late and the estrus status is not obvious, which adds a certain degree of difficulty to the breeding work. Back-up cultivation has become more important.
Mating estrus two or more times, weighing more than 100 kilograms, preferably more than 7 months of age, estrus has reached twice, indicating that sexual maturity has been reached, genital development can meet the needs of pregnant birthing, more than 100 kilograms Also meets body requirements for adult weight.
Feeding methods gilts are over-fertilized and grow too fast, delaying estrus time. Weights above 150 kg remain estrus. Limiting rearing has become the consensus for gilt rearing, but excessive restrictions often occur in actual work. There is a delay in the initial period.
The gilts are free to feed within 5 months of age and weigh about 70 kg. They are kept from 5 months to 6 months of age and are fed with mineral-rich, vitamin-rich gilling stock. The daily amount is 2 kg, 6 Increase the amount of feed by 6 months and a half months, promote accelerated weight gain and estrus, and maintain 80% to 90% of sows.
The measures taken for estrus-free gilts were contacted with boars to increase exercise. Vitamin E, vitamin A and green feed, carrots, etc. were added to the feed, and aphrodisiac horse serum was injected.
Feeding management of pregnant sows
Pregnant sows have to achieve three indicators, one is to produce a large, robust, large number of live pigs. The second is that the maternal sow's mammary gland develops normally and produces more milk. The third is to save the feed as much as possible and reduce the cost of birth of the newborn pig. So pregnant sow feeding is a simple and complicated job.
Several key periods during pregnancy:
1. After 3 days of distribution, this is a period of high differentiation of fertilized egg cells, and the supply of high-energy feed will increase the number of deaths of fertilized eggs.
2. Before and after the attachment (12 days to 21 days), if there is high nutrition or high temperature during this period, the death of fertilized eggs will also increase.
3. After mating for 70 days to 90 days, a large number of mammary gland cells proliferate. This stage of high-energy feed will affect the development of mammary glands.
4. After 100 days of mating, the death of the fetus due to lack of nutrition was small before 100 days. However, after 100 days, if malnutrition caused poor fetal growth, the sows were unable to give birth and there would be a large number of stillbirths. At this stage, sufficient feed must be supplied. However, it is necessary to control the feeding 3 days before delivery, otherwise it will cause dystocia. Pregnant sows should pay attention to energy, Cp is 12%, and lysine is 0.43%.
Lactation feeding management
Breast-feeding sows are required to complete the dual tasks of suckling pigs and self-recovery during the lactation period. High-energy, high-protein, and palatability feeds are prerequisites for achieving this goal. At the same time, providing a suitable ambient temperature enables the sows to eat More feed. The standardized production operation and post-natal care are the guarantees for the health of the sow.
Feed Nutrition We all know that no matter how the feed changes, the composition of the milk produced is relatively constant. To ensure the need for large amounts of milk production, the sow uses, in addition to feed conversion, substances stored in the body, such as fat, Calcium and so on. If the feed is undernourished, breast milk is often insufficient and excess body fat is used, causing weight loss and delirium. Therefore, a sufficient amount of high-quality feed should be supplied during the lactation period.
Then add oil to the feed to increase the energy in the feed, increase the palatability, increase the feed intake of the pig, and add the proportion from 1% to 3%.
Feeding methods The sows were given sufficient drinking water after giving birth, a small amount of feed was given, and as many pigs as possible were fed after 7 days, and the pigs were given wet mixes. Generally eat more than 6 kilograms per day. Feeding by day, three times a day and four times in summer.
Sow production and difficult-to-handling sows should cleanse and sterilize the genitals and breasts before delivery, squeeze out some of the colostrum, and let the pigs eat colostrum. Only allowing the pigs to eat enough colostrum can make the pigs sick.
Difficult to deal with, now there are difficulties in production we mostly use oxytocin and warts two methods. We need to decide according to the situation. Generally, the older, emaciated sows are irresponsible in the later stages of production and can adopt the oxytocin method. However, if the pigs are born for a long time, they may be oversized or two pigs crowded. If they are not together, or if the position is not correct, artificial pigs should be used. Artificial pigs are very unfavorable to sows and can easily cause infection of the birth canal. Arms and utensils must be disinfected and postpartum injections of antibiotics must be done.
Feeding management of suckling pigs
Managing good suckling pigs is the key to raising the survival rate. It can also improve the uniformity and improve the weaning rate. Let the suckling pigs eat colostrum early and fix the teats. Pay attention to the temperature of feed, replenishment, iron supplements, and suckling pigs.
Feeding management of weaned pigs
The difficulty in raising pigs for weaned pigs is the biggest problem that affects the current size of pig raising. The disease is complicated and the mortality rate is high, resulting in losses far more than other stages, often resulting in loss or bankruptcy of many pig-breeding enterprises.
The weaned pigs lack maternal antibody protection and are vulnerable to invasion by various pathogens. There are many immunoglobulins in breast milk, which can effectively reduce the damage of various pathogens and protect the successful passage of suckling pigs.
Diseases such as mycoplasma, pleuropneumonia, diarrhea, parahaemolytic bacillus, edema, etc., circovirus and blue-ear disease can reduce the body's immune system, and are more susceptible to various pathogens.
Successfully completed the transition from breast milk to feed and strengthened the feed before weaning. Enzyme preparations are added to feed to reduce pre-weaning gastric acid secretion. Pay attention to feeding methods, eat less meals. Create a suitable environment, control the temperature, add drugs to prevent, add Zhiyuanjing, amoxicillin, chlortetracycline.
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