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More colostrum intake, better growth and fattening (lower cost)

The depressed market has been holding the tight nerves of pig farmers, testing every pig enterprise. However, the excessive entanglement of pig price can not help the pig farm to tide over the difficulties. Instead, it is a wise choice to do what we should do. It is the king's way to concentrate on improving production performance and reducing costs, so as to obtain higher profits when the price of pigs recovers.

1. Is there a relationship between the intake of colostrum and the growth and fattening of piglets?

The intake of colostrum within 24 hours after birth affects the performance of the whole growing period. Colostrum is not only a high-energy liquid, but also provides other nutrients and bioactive substances to stimulate the growth of pigs. Colostrum plays an important role in helping piglets survive and throughout their life cycle. Wiegert's study assessed how birth weight and colostrum intake on the day of birth affect feed intake, daily gain and feed conversion rates of growing and fattening classes. The results showed that piglets with high birth weight and high intake of colostrum performed best in the growth and fattening class, while piglets with high birth weight but low intake of colostrum grew slowly in the subsequent growth and breeding class. On the contrary, piglets with low birth weight but high colostrum intake had a good start, and then had a better feed conversion rate in the growing class. Therefore, the performance of growing finishing pigs can be improved by maximizing the intake of colostrum after birth.

2. How to increase the intake of colostrum in piglets

There are two reasons for piglets' colostrum deficiency: insufficient amount of colostrum secreted by sows and insufficient intake of colostrum by piglets. Next, this paper will analyze the reasons from these two aspects and answer how to increase the colostrum intake of piglets.

2.1 how to make sow breast plump and increase colostrum production?

2.1.1 comfortable environment -- feed, drinking water, temperature and oxygen

(1) adequate feed and clean drinking water should be supplied to sows with comprehensive nutrition, and good quality antifungal agents, such as chloramphenicol, should be used to ensure that sows are not affected by mycotoxins, especially from May to October every year. Because mild mycotoxin poisoning can lead to sow breast performance, reduce milk production.

(2) cooling measures should be taken in summer to avoid heat stress. Heat stress in summer can not only directly cause poor development of sows, but also reduce feed intake of sows, thus affecting lactation capacity. Therefore, pig farms must do a good job in cooling down the pig house.

(3) sows should be well ventilated. Sow house ventilation is better, oxygen supply is sufficient, so that the sow will feel comfortable, and then breast full, milk is sufficient.

2.1.2 sows secrete enough hormones

Hormone plays an important role in the development of sow mammary gland. Enough hormone stimulates breast development and secretes more colostrum. In order to control porcine circovirus, the following procedures should be taken: 1) sufficient protein and enough light should be used to control porcine circovirus.

2.1.3 sows are not affected by postpartum triad (MMA)

Prevention of sow postpartum triad (MMA), timely detection, timely treatment, and take preventive measures. Shenansulfonate is a kind of sulfonamide antibiotics with high efficiency and broad spectrum. It can effectively prevent mastitis, uterus inflammation and non milk syndrome caused by sensitive bacteria infection in sows. It can be added to sow feed to prevent the occurrence of postpartum triad (MMA) in sows. In addition, the sows should be injected with antibiotics in time to prevent the occurrence of postpartum triad (MMA).

2.1.4 probiotics - promote breast development, enhance lactation capacity and intestinal mucosal immunity (MI)

Probiotics can improve intestinal health, enhance intestinal mucosal immunity (MI), enhance absorption capacity, breast fullness and lactation capacity of sows, increase the content of anti body (IGA, SIgA, etc.) in colostrum, and improve the quality of colostrum.

2.2 how to help piglets eat more colostrum

The results showed that there were two main reasons for the insufficient intake of colostrum in piglets when the amount of colostrum in production was sufficient: first, the sow's labor process was too long; second, the later born weak piglets could not compete for nipples, could not eat colostrum or eat less colostrum. To help piglets eat colostrum well, first of all, shorten the sow's birth process, control the time within 3-4 hours, piglets can produce as soon as possible, and have the opportunity to obtain more colostrum; at the same time, we should collect the colostrum artificially for the piglets, so as to ensure that all piglets get enough colostrum, especially the weak piglets.

2.2.1 shortening sow birth

(1) after producing about 5 sows, the sows can be driven up and allowed to move to help the piglets in the uterus move to the birth canal and produce smoothly. Reason: sow uterus belongs to bicornate uterus, which is easy to form folds in abdominal cavity, and it is difficult to produce fetal pigs in folded placenta (Fig. 1). Lying on the other side of sows can stretch the uterus, which is conducive to shortening the labor process.

(2) intravenous drip. Because sows consume a lot of calcium (uterine smooth muscle contractile coupling agent) and capacity, intravenous infusion of calcium and energy is very important to shorten the sow's birth process, especially in hot summer. Specific methods: first, prepare the infusion solution (formula: 20% calcium borogluconate 60ml + compound butachlor injection 15ml + vitamin B complex 7ml, mixed in 5% dextrose salt solution, a total of 1000ml); when the sows produce 5-7 piglets, start to drip.

2.2.2 colostrum management

(1) collect colostrum

Before colostrum collection, wash sows' breasts with a clean sterilized hot towel (such as Bromogeramine or hydrogen peroxide diluent). When the sows give birth to 5-7 pigs, the nipples of sows are artificially squeezed and the colostrum is collected with bottles (Fig. 2).

(2) colostrum

The collected colostrum can be fed to piglets immediately (Fig. 3), and the last few weak piglets are usually fed first. The amount of each dose depends on whether the piglets are struggling. When the piglets struggle, it means they are full. To ensure that each piglet should be given at least 3 times (mark the piglet once every time) at an interval of about 1 hour (stomach emptying). The piglets should take food by themselves once or twice, totally 4-5 times.

(3) main points of colostrum administration

Colostrum must be administered within 6 hours after birth, because the Fc receptors binding to maternal antibodies (IGA, etc.) on the intestinal mucosa of piglets are updated and replaced after 6 hours (Fig. 4). At this time, the maternal antibodies can not bind to the receptors on the intestinal mucosa, and can only be digested and absorbed by the intestinal tract like ordinary proteins. Therefore, it is very important for piglets to take colostrum within 6 hours after birth.

Colostrum can be refrigerated for several hours or - 20   ℃ for long-term storage. It can be thawed with 37   ℃ warm water. When a sow has more colostrum, it can be given to other sows with poor colostrum. It is suggested that the colostrum of multiparous sows should be fed with the piglets of poor colostrum. In addition, sows in the same building had close contact with pathogens, so it was better to feed colostrum produced by sows in the same building to piglets in the same building.

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