Four advantages of early weaning at 26 weeks of piglets
Early weaning of piglets refers to the weaning of piglets at 2-6 weeks of age, which is called early-stage weaning earlier than 2 weeks of age. Currently, weaning is usually performed at 3-4 weeks of age. A prerequisite for early weaning in piglets is the quality of the piglet feed. At present, there are various kinds of feed supply markets for suckling pigs. Due to the different feed formula technology, raw material quality and cost control of various manufacturers, the feeding effect and cost are different. There should also be a good environment for piglet breeding.
The advantages of early weaning of piglets are:
1. Improve the fertility of sows.
First of all, we must understand the following three concepts: Sow breeding cycle (days) = days of pregnancy + number of days of breastfeeding + weaning to re-pregnancy days, number of litters per sow individual = 365 days (one year in a row) / sow breeding cycle ( Day) The average annual litter size of the whole sow = the total number of litters per year, the average number of litters per year, the number of pregnant sows, the number of days of sows is determined by the species characteristics of the pigs (average 114 days), it does not take people The will changes. The number of days of lactation and the number of days from lactation to re-pregnancy can be changed by feeding techniques. Sows have a short lactation period, less weight loss and good body condition, and estrus in a timely manner after weaning (usually about 7 days, ranging from 3 to 10 days), and the number of days to re-pregnancy is short, thus shortening the breeding cycle of the sow To increase the number of piglets per year for sows, from the traditional 60-day-old milking in the past, the annual output of milk is less than 2 litters, and the annual output of 3-4 weeks old milk is 2.2-2.4 litters. Feeding lactating sows in traditional pig houses can also use early piglet weaning techniques. However, the lactation period is not as short as possible, because the sows postpartum, the uterus will recover after about 1 month to prepare for the next pregnancy; breastfeeding can stimulate the uterus to recover early, prematurely wean, and the postpartum genital tract of the sow The normal recovery is unfavorable, and a large number of trials and production practices have shown that sows are free of fertility after 3-4 weeks postpartum, followed by lactation at 2 and 5 weeks.
2. Improve feed utilization.
The sows feed milk, produce milk, and then feed the piglets with milk. The pigs use two conversion processes for feed utilization, and the feed utilization rate is only about 20%. If the pigs feed directly on the feed, the feed utilization The rate can reach about 50%, which improves the utilization of feed for piglets. Although the price of suckling pigs is higher, but the amount is small, only about 4 kg per head, the overall economic benefit is high, mainly in: improving the fertility of the sow, the feed utilization of piglets, piglets and Its subsequent growth rate and uniformity, the turnover rate of the bar, and so on.
3. Conducive to the cultivation of piglets. From the lactation law of the sow and the nutritional needs of the piglets, the lactation reached a peak 3 weeks after delivery, and gradually decreased afterwards. At this time, the growth and development intensity of the piglets increased, and the milk could not meet the developmental needs. . At this time, it is separated from milk, and it can supply the full-price suckling pigs that can meet the growth and development of piglets. At the same time, it provides suitable breeding environment for feeding, which is conducive to promoting growth and disease control of piglets, reducing the proportion of weak piglets, and thus gaining body weight and growth. Evenly piglets.
4. Improve the utilization rate of the delivery bar and equipment.
Due to the short lactation period, the turnover of the delivery bar is fast and the utilization rate is high. At the same time, due to the construction, equipment and production operation (electricity) costs of the delivery house, the proportion of the whole process of pig production is the largest, and the utilization rate is improved. This reduces the burden of production infrastructure costs for each pig produced.
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