Common Problems and Analysis in Pig Production

I. Problems related to feed nutrition and production management.
Problems related to sow feed
The feed intake of lactating sows is not up and their stools are dry.
Suckling sows lack milk, suckling piglets have more yellow and white dysentery, and the weaning weight of piglets is small.
Sows have abnormal oestrus after weaning.

Reason analysis:

1. Reasons why sows'intake is not going up:
(1) High temperature, high humidity and insufficient ventilation in the fence.
When the temperature of the pen exceeds 33 C, the sow's breathing will be accelerated and the feed intake will be decreased significantly. In the southern open pigsty, attention should be paid to the height of the pen, and measures such as spraying water on the roof to cool down or planting trees and vines to reduce the radiation of the sun should be taken. Negative pressure ventilation and wet curtain cooling can be adopted in closed pigsty in the north.
(2) The unreasonable formulation can also cause the intake to go up. (3) Too much food intake in the first trimester of pregnancy leads to excessive obesity, and too fast feeding in the first week after childbirth will lead to poor feeding intake during lactation.
(4) Feeding wet material instead of dry material, adjusting feeding time (feeding more when it's cool in summer morning and evening), and feeding two meals to three meals on the other day can increase the intake.
2. The main factors determining the milk quality of sows are feed quality and daily feed intake of sows.
The digestive energy of suckling sow feed should reach 3400 kcal/kg, crude protein content should reach 18-19%, lysine content should reach 0.85-0.9%. The daily feed intake of sows should reach 6-7 kg/head during the peak lactation period. However, poor quality of feedstuff (especially low digestive energy) and inadequate daily feed intake are common problems in farms and farmers (23 megacalories of digestive energy and 58 klysine per day are needed for sows during peak lactation period).

3. The main causes of pulling yellow and white diarrhea in suckling piglets:
(1) Too much or too little milk can cause yellow and white diarrhea in piglets. In a litter of small piglets, the piglets who eat the back nipples usually pull too little milk first, while in larger piglets, the piglets who eat the front nipples pull too much milk first. It can be used to judge the level of material used and adjust it.
(2) Huang Baili was born within a week after birth, usually due to poor hygienic conditions, caused by bacteria or viruses. Attention should be paid to the disinfection of delivery room and the disinfection of pigs before breastfeeding. Before the birth and postnatal weeks, the medicine should be added to the breast feed for prevention and health care.
4. Common causes of estrus abnormality in sows after weaning:
(1) Lactation period has a serious loss of fat, and after weaning, no attention is paid to promoting estrus and supplementary feeding.
(2) Breeding of primiparous sows without reaching the appropriate body weight and age will lead to estrus abnormality in the second litter (foreign breed reserve sows should be more than 120 kg, 7.5-8 months old, first mating for the 2nd-3rd estrus).
(3) There are diseases of reproductive system.
(4) Insufficient light and exercise, distance from boars, inadequate measures to induce sexual intercourse, and so on, weaned sows can not get the sexual stimulation they deserve.
5. Measures to promote estrus in weaned sows:
(1) Reduce the fat loss of sows during lactation (the key is the nutritional level and intake of lactation feed).
(2) Three days before weaning, appropriate diet should be reduced (from 6-7 kg per day to 3-4 kg per day); from weaning to mating, short-term excellent feeding and estrus (3-4 kg per day of lactation) should be required.
(3) The sows and boars that do not oestrus 20 days after weaning will be shut up in the playground early and late; the drug-induced oestrus should be carried out 8-9 days after weaning and injected with PG600.
(4) Vitamin E, A, C supplementation, trace element selenium or feeding green fodder, especially in hot summer.
(5) Over-fat and over-thin sows adjust body fat.
(6) sows with reproductive diseases should be treated promptly.
II. Problems in Disease Control
Pig diseases are becoming more and more complex and difficult to control. The problems we often encounter are:
(1) A considerable number of pig breeders still have outdated farming concepts, far from meeting the needs of disease control:
1. Misunderstanding:
Cost reduction = reduced unit cost of feed formulation + reduced expenditure on vaccines and preventive drugs.
(1) feed nutrition can not meet the growth needs of pigs, and the resistance of pigs to diseases is decreasing.
(2) Mycotoxin causes immunosuppression, which leads to the decline of disease resistance in pigs.
(3) Immunization procedures are confused, antibody levels are uneven, maternal antibodies are low, and immunization failure is easy.
(4) Lack of necessary disinfection and drug health care measures. The density of pathogenic microorganisms in the environment increased, the incidence increased, the mixed infection and secondary infection increased, and the mortality rate increased sharply. All in all, we saved sesame and lost watermelon!
2. There is no real understanding and implementation of "prevention is more important than treatment", over-reliance on drugs and dependence treatment:
(1) Really high-level veterinarians are not good at treating diseases, but good at preventing diseases. The highest realm of veterinarians is "health veterinarian", followed by "preventive veterinarian" and "therapeutic veterinarian", but in the minds of many pig owners their status is the opposite.
(2) paying too much attention to treatment will only lead to a "headache, headache and pain" and lack of systematic understanding of disease control in the whole field.
(3) Pigs are raised to make money, not to set targets - the annual mortality rate of 6% tends to be more profitable and easier than the 4% mortality rate created by treatment efforts. (4) adhere to the principle of five * * treatment of swine disease: no cure; no cure for the disease; too much work and time; no cure; a cure with high economic value. (2) Insufficient hardware facilities and process flow

1. Maternity room and nursing can not be all in and out. This is the most basic requirement for disease control. The piggery owner who pursues it must consider reforming it as soon as possible. 2. The design of the fence is unreasonable, with heat preservation and cooling.