Technical points of sow feeding and management in summer

The hot and humid weather in summer is easy to cause heat stress, decreased collection, poor lactation performance, decreased conception rate, increased incidence of postpartum triad and constipation in sows, thus increasing the difficulty of sow feeding and management. reduce the economic benefits of the pig farm.

According to practical experience, talk about the main technical points of feeding and management of sows in summer:

1. Do a good job in pig house hygiene and improve the disinfection process.

Traditional pig farming pays attention to "dry and full food in the pen", which says that the pig pen should be cleaned frequently and kept clean and hygienic. The feces of lactating sows should be cleaned in time. Personnel entry and exit and vehicle entry and exit are strictly disinfected, rules and regulations are established, and managers take the lead in abiding by them.

two。 Do a good job in preventing heat and cooling sows. Due to the high temperature in summer, sows, especially lactating sows, are sensitive to heat stress, decreased fecundity, less ovulation, more stillbirths and higher mortality. In summer, measures such as heat prevention and cooling, strengthening ventilation and spraying should be done; an Arbor should be built on the sports ground, sunshade nets should be set up, pigs should be washed with cold water or spray settings should be installed, spraying 4 ~ 6 times a day, and wet curtain cooling system can be installed in conditional pig farms. It is best to drop water to cool the sow in the delivery house and drop it on the neck near the shoulder.

3. Do a good job in greening pig farms.

Try to choose to build a site in a place with more trees, and plant trees in front of the pigsty, which can adjust and improve the microclimate environment of the field area, reduce summer heat radiation and release oxygen. To do a good job in pig farm greening, the ambient temperature of pig house can be reduced by 3 ℃ ~ 4 ℃ and heat radiation can be reduced by 80% in summer.

4. Adjust the feed formula to ensure that the nutrition level is appropriate.

Heat stress often affects the gastrointestinal function of sows, resulting in loss of appetite and weight loss of sows. Therefore, the feed formula should be adjusted in time to improve feed palatability and nutritional concentration, so that sows can also meet the nutritional needs in the case of reduced feed intake.

0.2% Hawthorn can be added to the sow diet to promote digestion, or 0.1% to 0.2% baking soda can resist stress and increase appetite. Conditional pig farms can also be properly fed with some green succulent feed to enhance the anti-heat stress ability of sows. Sows with hard defecation can be fed lactation feed 2 ~ 3 days before delivery and given laxative twice, such as sodium sulfate and artificial salt to prevent sow constipation.

5. Adequate supply of cool and clean drinking water

6. In order to increase the feed intake of sows, the feeding time of sows should be adjusted to 6: 00 in the morning and 6: 00 in the afternoon. Wet the feed to improve palatability.

7. Reduce all kinds of stress factors.

Sows to unfamiliar individuals or bright colors will show a relatively strong expulsion reaction, usually require breeders to wear unified overalls, do not easily change breeders, minimize stress stimulation, reduce the number of sows turning and pregnant sows, and try to keep the environment inside and outside the pig barn quiet.

8. Do a good job in immunization and health care.

The temperature is higher in summer and there are many mosquitoes. Je vaccine should be made at the end of spring and the beginning of summer. With the rise of temperature, it is easy to cause blood protozoa, such as Eperythrozoon, Toxoplasma gondii, etc., transmitted by mosquitoes. In order to prevent postpartum "triad" and piglet diseases, health care should be done one week before and after delivery of sows (that is, perinatal period). Intramuscular injection of Hengweikang 20 ml / time Qingkailing Banqing granule 500g or antiviral No. 1 1000 g + 70% amoxicillin 350g + Lino (non-bitter enrofloxacin) 1000 g can be added to each ton of feed to purify the disease of sows and cut off the spread of disease from sows to piglets. To pay attention to postpartum anti-inflammation of sows, strong amoxicillin + Qingkailing + houttuynia cordata can be used for continuous intramuscular injection for 3 days. During artificial midwifery, the disinfection and sterilization of sows and operators should be carefully put in place. The sows with heatstroke were immediately moved to a cool and ventilated place for rescue, and the pigs were sprayed with cold water. At the same time, 5% glucose saline was injected intravenously 200ml ~ 500ml, and intramuscular injection of Fengqiang Star 10ml ~ 20ml. For manic pigs, 2.5% chlorpromazine was injected intramuscularly with 20 ml.

9. Regular deworming

When the seasons alternate from March to April, June to July and September to October every year, it is best to carry out regular deworming.