How much feed does a sow need to eat a day?

The amount of feed for sows depends on the stage of sows.

1. On the day of sow breeding, immediately reduce the feeding amount to 1.6- 1.8kg/ day, and switch to pregnant sow feed (crude protein content 14%).

Sows always get nutrition mainly from developing embryos, and there is little demand for embryos. In general, the nutritional level during pregnancy is unlikely to affect the number of litters.

2. 40-60 days after mating, feed pregnant sows 2.0 kg/day.

3. Feed 2.0-2.5 kg/day to pregnant sows 60-90 days after mating.

35-90 days of sow pregnancy is a period of growth, body reserve and physical condition adjustment and recovery. Fattening or emaciated sows should be reduced or fed properly to make pregnant sows in good condition before delivery, and the P2 back fat thickness of each sow at delivery should be 18- 19mm.

4. 90 days pregnant-feed 2.5-3.0 kg/day to the lactating sow. (The crude protein content in the diet is 16%)

① This stage is the rapid growth stage of fetus and mammary gland. It is suggested that both gilts and sows eat 9500 calories of digestible energy/day.

② Prenatal sow feeding too much will reduce postpartum appetite and feed intake, and affect sow lactation.

③ It is uneconomical to increase the birth weight of piglets by increasing the feeding amount of sows before delivery.

5. Lactating sows-The feeding amount is calculated according to 3Kg+330g× number of piglets/sow. Feeding methods of less feeding and more meals or free feeding.

① During lactation, sows should try to increase the feeding frequency, such as feeding in 4-6 meals. Feed more in the morning and evening in summer and less at noon.

② Too much fat loss of lactating sows will affect the normal estrus after weaning and the litter size of the next fetus. Feed piglets and lean sows as much as possible.

③ In summer, due to the decrease of sow feed, attention should be paid to adjusting feed nutrition.

(4) Pay attention to cleaning the scraps in the tank to prevent the sow from eating moldy feed.

6. Lactating sows-the feeding amount is calculated according to 3Kg+330g× litter size/sow. Feeding methods of less feeding and more meals or free feeding.

① During lactation, sows should try to increase the feeding frequency, such as feeding in 4-6 meals. Feed more in the morning and evening in summer and less at noon.

② Too much fat loss of lactating sows will affect the normal estrus after weaning and the litter size of the next fetus. Feed piglets and lean sows as much as possible.

③ In summer, due to the decrease of sow feed, attention should be paid to adjusting feed nutrition.

(4) Pay attention to cleaning the scraps in the tank to prevent the sow from eating moldy feed.

7. Weaned sows-Reduce the feeding amount to 3.0-3.5 kg/day on the day of weaning and feed lactating sows.

Extended data:

Selection method of sow

1, according to the market demand, combined with the level and conditions of feeding management, select the appropriate sow varieties. If fattening pigs are to be shipped to large and medium-sized cities for sale, or cooperate with large slaughter and processing enterprises, and the slaughter rate and carcass lean meat rate are required to be high, it is necessary to choose imported hybrid sows with high lean meat rate, such as Landrace or Landrace, and to raise and cultivate sows; If the requirement for lean meat rate is not high, you can choose local and imported hybrid sows. Farmers who lack pig-raising technology and experience should choose breeding pig breeds with good adaptability, strong disease resistance and high growth and fattening performance and their matching combinations. Professional households with certain pig-raising experience and technical accumulation are advised to choose large or long sows.

2. Understand the reproductive performance characteristics of different breeds of pigs and make choices. Comparatively speaking, the reproductive performance advantages of local varieties and cultivated varieties are more obvious than those of imported varieties. Local pigs have early sexual maturity, more ovulation, more litters, more nipples, strong lactation, obvious estrus symptoms and high fertility. The estrus symptoms of imported pigs are not obvious, and the breeding time is not easy to master. Because of estrus, repeated infertility, small litter size or estrus of first-born pigs after weaning, the elimination rate is high. Lactation capacity and larval protection are not as good as domestic local pigs, but the production performance is high.

3. Pay attention to the individual choice of sows. Sows are suitable for individuals who are 4-5 months old and weigh 50-75 kg. At this stage, the growth and development, physical appearance, reproductive organs and nipples of pigs are basically stereotyped, and it is easy to choose appearance. The main appearance requirements for selecting a reserve sow are: obvious breed characteristics (coat color, head type, ear type, etc. ), good figure, delicate face, light head and neck, strong physique and straight back line; The nipples are arranged evenly and neatly, with a certain spacing, without blind nipples and accessory nipples, and there are more than 6 pairs of effective nipples; The reproductive organs are well developed, and the vulva is large and drooping; The limbs and hooves are strong, without obvious limping and split hooves.

In addition, special attention should be paid to the health status of the selected sows. It is best to collect blood samples from selected sows and send them to qualified testing institutions for testing, and then make a choice according to the results. Breeding pigs should generally be introduced from breeding farms with perfect epidemic prevention system and strict implementation, and breeding pigs come from non-epidemic areas.

References:

Baidu encyclopedia-sow