The boss started with raising pigs

According to Zhang Hai's plan

Intermediate rune functions will only be used locally in Qingshan County, or used in small amounts in other places. After all, things are rare and expensive. If there are too many high-end products, it will not be good for yourself and the company!

The next day, Zhang Hai came to pig farm No. 1 early in the morning to inspect the breeding workshop in the pig farm.

The raising and production of sows is not easy, and different pig houses are needed at different times.

For example, when breeding, it is necessary to set up breeding pens in the breeding barn. One boar is raised in one breeding pen. After the 4 single pens, there are 8 breeding pens.

After mating, the sows are reared in a single pen and observed for 4 weeks. After the pregnancy is confirmed, they are transferred to the gestation pen and raised, and the non-pregnant or return to estrus sows are returned to the breeding pen for second estrus breeding.

It is recommended to eliminate sows that are not suitable for two consecutive estrus periods, supplement them with gilts, and transfer the sows at 16 weeks of gestation to the farrowing house to prepare for farrowing.

"The boss here is the farrowing house specially prepared for the sow production!" Yang Jia pointed to the pig house in front of him and introduced Zhang Hai.

Zhang Hai nodded and asked, "Our second batch of 2,000 sows is about to be produced, right?"

"Almost, the two thousand sows introduced in early June have been pregnant for 13 or 4 weeks, and they will be transferred here one after another in about half a month!" Yang Jia smiled and replied!

The average gestation period of sows is 114 days, ranging from 110 to 120 days. Sows with more litters and good nutrition often give birth a few days earlier, and sows with fewer litters and poor nutrition often delay farrowing by a few days.

There are two methods for estimating the due date, one is to add 3 months to the mating month, and 3 weeks and 3 days to the date;

The other is to add 4 to the month of service and subtract 6 from the date of service.

According to calculations, these pigs will be produced around October 5th, and there are still 20 days to go!!

"These sows need to be taken care of, there must be no problems!" Zhang Hai checked around and found that the sows are all fat and white, and they seem to be in good health.

"Boss, don't worry, we attach great importance to pregnant sows!"

To put it in a joke of the employees, when their daughter-in-law was pregnant, no one had been so attentive to serve!!

"That's good!" Zhang Hai was very satisfied with everyone's attitude.

According to Yang Jia's introduction, Zhang Hai also learned some knowledge about raising sows.

In the early stages of pregnancy, sows are in a "pregnancy anabolic" state, which is manifested by thickening of back fat, weight gain, and increased metabolic rate due to pregnancy.Therefore, it is necessary to use green roughage as the main ingredient to increase feed intake to ensure nutritional levels.

In the later stages of pregnancy, the efficiency of "fetal anabolism" is very low (7% to 13%). In addition, the volume of the sow's abdominal cavity is reduced, which limits the feed intake. Therefore, if you cannot make ends meet, you will inevitably use the body fat accumulated in the previous period, so you must pay attention The quality of the feed is mainly concentrated feed to ensure the nutritional level and not make it weight loss.

In short, whether it is from the growth and development needs of the fetus or the changing needs of pregnant sows, pregnant sows must implement the "grab two" feeding management. Concentrate is used on the blade, and the feeding and management of pregnant sows are carefully done in the early and late stages.

The nutrients obtained by the sow during pregnancy are first to meet the growth and development of the fetus, and then to supply its own needs and to reserve some nutrients for future lactation.

For gilts, they also need some nutrients to supply their own growth and development. If they are undernourished during pregnancy, not only will the fetus not develop well, but also the gilts will develop abnormally and be short in size. Even if they strengthen their feeding in the future It is also difficult to compensate.

Therefore, feeding pregnant sows should be reasonably matched with diets. In addition to meeting the required energy, the diet should also be diversified, and attention should be paid to the level of protein.

If the feed lacks protein, no matter how much carbohydrate-containing concentrates such as corn and sorghum are fed, the pigs cannot be raised well.

Calcium and phosphorus are important elements for fetal bone growth and prevention of sow paralysis. Generally, plant-based feeds often cannot meet the needs of pigs, and calcium carbonate, shell meal or bone meal must be supplemented.

Salt can increase appetite, promote metabolism and improve digestibility, 0.5% salt can be added to the diet.

In the case of green roughage as the mainstay, vitamins are generally not lacking, but in winter, you should pay attention to supplementing juicy carrots or silage.

In terms of feeding technology, the volume of the pregnant sow's diet must be compatible with the food intake.The green roughage should be matched according to the food intake of the pigs, and the diet should be kept in a certain volume so that the pigs can eat.

In the later stages of pregnancy, the amount of coarse feed should be reduced to prevent the size of the fetus from being too large to cause stillbirth, and to feed less and more meals, it is best to feed 4 times a day, and feed only 80% full each time to maintain good condition of the sow and ensure the fetus Normal development.

Moldy, spoiled, spoiled, frozen, toxic and strongly irritating feed should not be used to feed pregnant sows, otherwise it will easily cause miscarriage.The feeding amount of pregnant sows varies with parity and pregnancy stage.

As the time of raising pigs is getting longer and longer, Zhang Hai found that raising pigs is really not a simple matter, and the high technology and requirements are shocking!!

No wonder that almost all pig farms nowadays are large-scale breeding, and ordinary farmers are becoming less and less competitive in the market!Because pig raising will also become a knowledge-intensive and technology-intensive industry!!

"How many empty pig houses are left in our pig farm?" Zhang Hai asked Yang Jia again when he walked out of the sow breeding workshop.

The No. 2 pig farm only bought 60,000 pigs before, and there are still 40,000 vacancies. Recently, it has been replenishing stocks continuously. Therefore, Zhang Hai does not know how many pigs are still lacking in the pig farm?

"There are more than 32,000 empty columns. According to your boss's request, we will reserve 30,000 of them. The remaining 2,000 empty spaces will also be filled in this week!" Yang Jia expertly answered!

According to the calculation of the litter size of the sows in the previous pig farm, an average of 15 litters per sow, then two thousand sows can produce about 30,000 litters!!

Therefore, the 30,000 empty slots reserved are specially prepared for the piglets who are about to be born.

And currently

There are 22,100+ sows in the Shanshen Pig Farm.

In addition to the two thousand sows sold in early June, more than 100 sows purchased by the pig farm in March and the end of April have already given birth, and the piglets have already weighed about 100 catties. This piglet is raised as a breeding pig for Shanshenxiang pigs, and it is estimated that it will not be bred until April or May next year!

In addition, another 20,000 sows introduced in mid-to-early August have now been bred one after another. It is estimated that large-scale litters will be born in December, at most early next year.

By then, the piglet inventory on the pig farm will reach an astonishing 300,000!

Zhang Hai's heart surges when he thinks of this!Full of expectations for the future of the pig farm!!