The big guy starts with raising pigs

Chapter 148
According to Zhang Hai's plan
The middle-level rune function will only be used in Qingshan County, or a small amount of use in other places. After all, things are rare and expensive. If there are too many high-end products, it will be of no benefit to myself and the company!
The next day, Zhang Hai came to No. [-] pig farm early in the morning to inspect the breeding workshop in the pig farm.

Sow feeding and production are not easy, and different pig houses are needed in different periods.

For example, when mating, it is necessary to set up a breeding pen in the breeding pen. One boar is raised in one breeding pen, and it is set behind 1 individual pens, and a total of 4 breeding pens are set up.

After mating, the sows are raised in individual pens and observed for 4 weeks. After pregnancy is confirmed, they are transferred to the gestation pen for feeding. The sows that are not pregnant or return to oestrus are sent back to the breeding pen for second mating.

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

"The boss here is a farrowing house specially prepared for sows to give birth!" Yang Jia pointed to the pig house in front of him and introduced it to Zhang Hai.

Zhang Hai nodded and asked, "Is our second batch of [-] sows about to give birth?"

"Soon, the 13 sows introduced in early June have been pregnant for 4 or [-] weeks, and they will be transferred here one after another in about half a month!!" Yang Jia replied with a smile!
The average gestation period of sows is 114 days, ranging from 110 to 120 days. Sows with large litters and good nutrition often give birth a few days earlier, and sows with few litters and poor nutrition often delay delivery a few days.

There are two ways to calculate the expected date of delivery, one is to add 3 months to the breeding month, 3 weeks and 3 days to the date;
The other is to add 4 to the month of breeding and subtract 6 from the date of breeding.

According to calculations, these pigs will give birth around October 10th, and there are still about 5 days left! !

"These sows have to be taken care of, and there must be no problems!" Zhang Hai checked around and found that the sows were all fat and healthy, and they seemed to be in good health.

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

To use the staff's jokes, when my daughter-in-law was pregnant, no one has ever taken care of her so carefully! !
"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.

During the early stages of pregnancy, sows are in a state of "pregnancy anabolic", manifested by increased backfat, weight gain, and increased metabolic rate due to pregnancy.Therefore, it is necessary to focus on green roughage, increase feed intake, and ensure nutritional levels.

In the late pregnancy, the efficiency of "fetal anabolism" is very low (7% to 13%). In addition, the volume of the abdominal cavity of the sow becomes smaller, which limits the feed intake. Therefore, it is impossible to make ends meet, and the body fat accumulated in the early stage is bound to be used, so attention must be paid The quality of the feed is mainly concentrate to ensure the nutritional level and not make it thin.

In short, no matter from the needs of fetal growth and development, or from the changing needs of pregnant sows, pregnant sows must implement the feeding management of "grasping two heads", that is, under the premise of ensuring nutritional needs, green roughage is given priority to. Concentrates are used wisely, and the feeding and management of pregnant sows in the early and late stages are carefully done.

The nutrients obtained by sows during pregnancy are first to meet the growth and development of the fetus, and then used to supply their own needs and reserve part of the nutrients for future lactation.

For gilts, they also need some nutrients to supply their own growth and development. If there is insufficient nutrition during pregnancy, not only will the fetus not develop well, but also the gilts will develop abnormally and have a short body. It is also difficult to compensate.

Therefore, raising pregnant sows should match the diet reasonably. In addition to meeting the required energy, the diet should also be diversified, and at the same time pay attention to the protein level.

If there is a lack of protein in the feed, 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 paralysis in sows. Usually, 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, and 0.5% salt can be added to the diet.

In the case of mainly green roughage, vitamins are generally not lacking, but in winter, attention should be paid to supplementing juicy carrots or silage.

In terms of feeding technology, the volume of the diet for pregnant sows must be compatible with the amount of food.The green roughage should be matched according to the pig's food intake, and the diet should be kept at a certain volume so that the pig can be full.

In the late pregnancy, the amount of roughage should be reduced to avoid stillbirth caused by excessive pressure on the fetus. It is also necessary to feed less and more meals. It is best to feed 4 times a day, and only feed [-]% full each time, so as to maintain good body condition of sows and ensure fetal well-being. normal development.

Moldy, spoiled, spoiled, frozen, toxic and highly irritating feed cannot be used to feed pregnant sows, otherwise it will easily cause miscarriage.The amount of feed for pregnant sows varies with parity and gestational stage.

As the time of raising pigs became longer and longer, Zhang Hai found that raising pigs was not an easy task, and the technology and requirements involved were astonishingly high! !
No wonder the current pig farms are almost all large-scale farming, 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 there in our pig farm?" Zhang Hai asked Yang Jia again after coming out of the sow breeding workshop.

The No. [-] pig farm only bought [-] pigs before, and there are still [-] vacancies, and it has been replenishing the stalls recently, so Zhang Hai doesn't know how many pigs are still missing in the pig farm?
"There are still more than 3 vacancies. According to your request, boss, we will reserve [-] of them, and the remaining [-] vacancies will be filled within this week!" Yang said. Jia answered skillfully!
According to the calculation of the litter size of sows in previous pig farms, each sow has an average of [-] litters, so [-] sows can give birth to about [-] litters! !
Therefore, the [-] empty stalls reserved are specially prepared for the soon-to-be born piglets.

And currently

There are a total of 22100+ sows in Shanshen Pig Farm.

In addition to the two thousand sows sold in early June, the more than 6 sows purchased by the pig farm in March and the end of April have all given birth, and the piglets have weighed about 3 catties. These more than 4 piglets, It is bred as a breeding pig of Shanshen Xiang pig, and it is estimated that it will not be bred until April or May next year!

In addition, the 8 sows introduced in mid-to-early August have now been bred one after another, and it is estimated that large-scale calving will occur in December, or early next year at the latest.

By then, the number of piglets in the pig farm will reach an astonishing 30!
Thinking of this, Zhang Hai's heart is surging!Looking forward to the future of the pig farm! !
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(End of this chapter)