Solutions to the problems in summer farms

Problem 1: Heat stress

Symptoms Pig farms are crowded on large-scale pig farms, and the ventilation between pig houses is poor. It is difficult to reduce the spatial temperature of living to below 32°C. If the herd continues to live in this environment for more than 72 hours, heat stress occurs.

Once heat stress occurs in the pigs, it will affect the performance of breeding pigs, reduce the sperm viability of the species, lower the conception rate of female sows, and high rate of stillbirth at the end of pregnancy; it will seriously affect the fattening effect of growing pigs due to the impact of eating, even Negative growth.

In terms of environmental measures, heat insulation, ventilation, spraying (sprinkling) of water, cooling of wet curtain fans, cooling of air conditioners, etc., can be used to construct awnings at the top of the sheds, and sunscreen nets can be built on the windows to plant quick-growing trees. Vine plants; deep hot water in the middle of the night to wash the house floor, finishing pigs and empty pigs can avoid even 20 minutes before and after feeding, avoid the head, spray directly, shower or flush the pig; open all vents, timely Remove manure and reduce fecal heat production; conditional farms can install fans or exhaust fans.

In terms of management, the breeding density should be appropriately reduced, feeding time should be adjusted (in the early morning and at night), the number of feedings should be increased, and wet ingredients should be used. At the same time, it is necessary to ensure that the pigs drink enough water and add appropriate salt, and the flow rate is not less than 1 litre/minute.

With a reasonable diet, reduce excess protein, increase dietary concentrations of limiting amino acids, especially lysine, add 2% to 3% of fat, increase the supply of trace elements, multidimensional, electrolytes, etc. Adding 0.1% to 0.2% of baking soda to the basal diet, or adding 0.1% to 0.2% of vitamin C to drinking water, has a good effect in preventing heat stress.

Problem two: mycotoxin poisoning

Phenomenon In recent years, the mycotoxin contamination of feedstuffs is widespread and difficult to solve, even if the finished compound feed is difficult to escape the mold contamination. Mycotoxin mild or chronic poisoning, generally does not show obvious clinical symptoms, it will not cause pigs to die, but can cause breeding disorders in sows, commercial feed finishing pigs reduced feed remuneration, and can cause immunosuppression affect the pig's immune effect, The losses to pig production are staggering but difficult to measure.

Measures to strengthen the management of various aspects of feed raw material procurement, storage, transportation and processing modulation, prevent mildew, must not use mildewed raw materials; mild mildew must be processed (such as first with 1.5% caustic soda water 12 hours, rinse with water again until the rinsing liquid is clarified, exposed to sunlight, add the mycotoxin adsorbent, and then reduce the use; strengthen the storage and storage of finished compound feed, and prevent dampness while killing and killing rats.

Once the phenomenon of mycotoxin poisoning in the pigs has been discovered, the moldy feed should be stopped immediately, fresh and high-quality feed should be replaced, or sufficient and effective mycotoxin adsorbent should be added to the feed and then promptly treated. In the early stage of poisoning, detoxification is the main method. 30 to 50 grams of sodium sulfate and 50 to 100 milliliters of liquid paraffin can be used, and 500 to 1000 milliliters of water can be used for irritation; when neurological symptoms occur, 20% of mannitol is used at 1 to 2 grams per kilogram of body weight. Intravenous injection, 2 times a day; vaginal prolapse or rectal prolapse, after routine disinfection, surgical suture fixation, and injection of anti-bacterial and anti-inflammatory drugs; when ascites, pulmonary edema, hemorrhage, and dehydration failure, timely intravenous injection should be 10 % Glucose Saline 300 to 500 ml + Vitamin C10 ~ 20 ml + 10 % Urogenotropine 20 ml, Inosine is suitably added. At the same time, subcutaneous injection of 10 mg of sodium sulphate, cardiac diuretic; sick pigs with severe symptoms, using broad-spectrum antibiotics to prevent secondary infection.

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