Is a sow crushing her piglets to death in her sleep 5 days after farrowing a sign of poor health?
A sow crushed her piglets to death in her sleep 5 days after farrowing - is this a sign that the sow is unhealthy?
Answer
The purpose of short-term flushing is to make sows come into heat better and ovulate more. Since sows often have a poor appetite during the period from weaning to mating (especially right after weaning and after estrus), short-term flushing should not be limited to just these 5-6 days. It is recommended to start flushing one week (5-7 days) before weaning. In addition, a sow's feed intake is relatively fixed, so the key to flushing is not simply increasing the amount fed, but supplementing various nutrients in a targeted way (organic trace elements, amino acids, etc., such as adding Zaiduoduo at 1 kg/ton of feed, which can effectively improve sow estrus, mating, and conception).
Poor feed intake in sows can also be improved by adjusting the pig house temperature, feeding time, feeding method, and other measures.
Zhang Xiaoyu: Do weaned sows need iron supplements? What dosage of iron per sow is appropriate?
Answer
Under normal circumstances, the iron intake from feed is sufficient for sows, but blood loss during farrowing and milk production during lactation can cause iron deficiency, so moderate iron supplementation is needed.
It is recommended to supplement 500-1000 mg per sow. Using 4-5 ml of Xueweisu per weaned sow can provide good iron supplementation and further optimize estrus.
Hunan Zhou Huaxiong: When is the best time to add glucose, and when should it be stopped?
Answer
Add glucose to sows from weaning until estrus, 200 g/sow/day. Too large a dosage will suppress feed intake.
Hunan Hengnan Chen Qin: A sow crushed her piglets to death in her sleep 5 days after farrowing. Is this a sign that the sow is unhealthy?
Answer
Not necessarily. In summer, sows are more clumsy, which affects their movement; sows with weak maternal instincts also easily crush piglets; poor management can also lead to piglets being crushed. Generally, overweight sows have a higher rate of crushing piglets, and this phenomenon cannot be used to judge whether a sow is healthy.
Jun Zhang: How long can sperm retain fertilization capacity in the sow reproductive tract?
Answer
6-8 hours, so the interval between the first mating and the second mating is generally 8-12 hours.
Shen Lin: A sow in the first three months of pregnancy has painful front or rear hooves and cannot stand up. What causes this?
Answer
Injury and infection of the hooves caused by rough flooring. Pay attention to floor maintenance (it should not be too rough) and environmental hygiene; treat according to the symptomstreatment, save the piglets; if subsequent symptoms remain severe, it is recommended to cull after farrowing.
Pingping Dandan: When a sow urinates, she discharges a substance like tofu pudding. What is going on?
Answer
Pregnant sows discharging tofu-residue-like secretions is generally related to water quality (water hardness too high or alkalinity too high), and is relatively common in northern China. It is recommended to use tap water or purified water 3.9.
Zhou Zhen: When is the best time to start mating when a sow is in heat?
Answer
① Observe changes in the sow's vulva, starting when the vulva begins to shrink after red swelling during estrus; ② Observe the sow's standing reflex