1, lactation sow nutrition regulation
Because lactating sows secrete more milk, the nutritional needs are much higher than that of pregnant sows; the needs of nursing sows for energy, protein, minerals, vitamins, etc. must be met. Therefore, it is necessary to feed high-quality, high-quality feed, and can not feed agglomerates. Mildew feeds, but also feed intake should be maximized. If the lactating sow protein and lysine are insufficient, in order to meet the growth needs of the piglet, it will consume its own muscle tissue to supplement the need for lactation, so that the weight loss of the sow is too large, which is not conducive to the growth and development of the piglet, so that the body weight is too small. Mineral nutrients have a major impact on sows and piglets, for example, low calcium or phosphorus levels or imbalances can cause hypocalcaemia and osteoporosis in nursing sows; long-term feeding of low-manganese diets will lead to sows The estrus cycle is abnormal or disappears, the milk production is decreased and the newborn piglets are weak, but the absorption and utilization of inorganic minerals by pigs are limited by the highest bottleneck. Therefore, certain organic minerals must be added to the feed. Various vitamins are not only required by the sows themselves, but also an important component of milk. The various vitamins needed for the growth and development of piglets are almost exclusively taken from breast milk.
2, feeding and management of lactating sows
(1) Preparation before entering the delivery room
When the sow enters the delivery room, it is necessary to keep the pigs clean. The pig must be thoroughly rinsed and disinfected, and the ectoparasite repelled. Also strict disinfection management of the delivery room, thorough cleaning, strict disinfection, to avoid residual pathogenic bacteria eroding young pigs; disinfection of commonly used drugs - caustic soda solution, medicinal concentration of about 2%, spray sun disinfection, after drying The use of disinfection Wei fumigation; the same time, with a flame lamp to kill iron frame, to eliminate the effectiveness of pathogenic bacteria. The production tools such as towels, pliers, scissors, disinfectant pots, Mistral, disinfectant (Dupont, potassium permanganate), drugs, etc. are ready.
(2) Prenatal and postnatal feeding
From the 4th to the 7th day before delivery, feeding 4 times a day is preferable, and the time is 6 o'clock, 10 o'clock, 14 o'clock, and 20 o'clock. Sows weigh 1 to 1.5 kg each time and the total amount is 3 to 4 kg. Body condition may be determined; 0.5 kg/day before delivery, 3 kg/day before delivery, 1 kg/day till delivery, and 0.5 to 1 kg/day on sow; sow feed can not be added too much at a time, plus 1.0 at a time. 1.5 kg. After each feeding, the sows were rushed to eat and clean the feces.
Feeding 7 days after delivery, feeding 4 times a day, 0.5 to 1 kg on the day of litter, 3 to 4 kg on the first day, 0.6 to 1 kg per day on the second day, and 8 days of free feeding; The total amount of feed consumed per sow was calculated based on 1.5 kg of sows and 0.5 kg of feed per piglet. Due to the weakness of postpartum sows, premature feeding may cause indigestion, milk changes, and diarrhea in piglets. Therefore, the feeding on the day of abortion should be handled flexibly. If the sow has strong postpartum physical strength, good digestion, and more heads of suckling piglets, feeding can be done to promote lactation. For sows whose constipation tends to be dry, try to increase the amount of drinking water and if necessary, feed artificial salt appropriately. The nursing sows began to reduce their weight from 3 to 5 days before weaning and gradually reduced from 5 kg/d to 1.5 kg/d. Weaned sows were not fed or fed less on the day of weaning.
(3) Regular measurement
Sows should measure P2 backfat before entering the farrowing room and 14 days after farrowing. Through the change of backfat thickness (see Table 1), the daily feeding amount and sow weaning time should be timely adjusted to ensure the next breeding. There is a standard body condition.
(4) Environmental Control
Delivery room temperature: between 20 and 25 °C. Above 22 °C, sows feed intake will be affected, especially first-born sows. Above 25 °C, feed intake decreased by 170 g/d for every 1 °C increase, especially when the relative humidity was greater than 60%. Incubator temperature: Piglets were born 1 to 2 days at 34 °C, 7 days at 32 °C, 14 days at 30 °C, and 21 days at 28 °C. Humidity is maintained at 65% to 75%, air quality: CO2
(5) Reduce stress
The delivery room should keep a quiet environment, minimize noise, avoid shouting, harsh treatment of sows and other stress factors; due to stress, sows will generally rise, which may lead to trampling piglets, thereby increasing the injury and death of piglets The situation is also not conducive to sow lactation.
Feeding and management of suckling sows is important for raising the quality of reproduction and the survival rate of piglets. In the feeding and management of suckling sows, prenatal preparation and feeding management are needed to prepare the delivery room and necessary utensils for the sow to ensure its motherhood. Pigs are in good physical condition. This will not only ensure that the sow will have a smooth delivery, will not allow the sow to have a difficult birth, but will also ensure that the sow will have normal lactation and prevent postpartum maternity, mastitis, and agalactia syndrome.
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