Sow trotter cracks are a very common condition on pig farms. Sows with cracked hooves have a significant decrease in the frequency of eating and drinking due to limb pain and do not like to stand, which in turn leads to a decrease in feed conversion rate; the reproductive performance of sows is reduced, such as abnormal estrus, repeated infertility, low littering, low litter rate, decreased lactation capacity, and piglets are born small, weaned, and even premature elimination. At present, when non-plague is rampant and sows are very tight, it is of great practical significance to think of avoiding the impact of production efficiency due to sow trotters.
<h1 class="pgc-h-arrow-right" > the cause of sow trotter splitting</h1>
Breed factor
Slender hoofed pigs such as Yorkshire, Changbai, Duroc and Hampshire are most susceptible to the disease; Hybrid offspring pigs of endemic breeds and their exotic breeds in China rarely have diseases; the incidence of slow-growing breeds with thick dorsal fat is very low.
Nutritional factors
Insufficient or improper proportion of calcium and phosphorus in the feed, which can easily cause cracks in the bottom of the hoof; Selenium deficiency can cause foot deformation, hair removal, arthritis, etc.; Chronic fluorosis and manganese deficiency can lead to abnormal deformation of the hooves, and when there is manganese deficiency, it is mostly transverse cracks; Zinc deficiency is a hoof fissure or lateral fissure; Lack of vitamin D, affecting the growth and development of bones, prone to osteochondrosis, limb and hoof irregularities and joint swelling, etc., so that the limbs and hooves of breeding pigs are unevenly stressed, resulting in cracked hooves, especially intensive closed pig farms, pigs lack of exercise and sun exposure, more prone to this disease. When biotin is deficient, it is unable to maintain the strength and hardness of the stratum corneum of the hoof, cracked hoof shell, transverse hoof, cracked foot pad and bleeding, and sometimes symptoms such as spasm, hair removal and inflammation of the back foot.
Climatic factors
The incidence is highest in the cold and dry climate in autumn and winter, and relatively low in spring and summer.
Ground factors
In the herd of split-hoofed pigs, the hind limb hooves occur more than the forelimb hooves. This is related to the smoothness of the enclosure floor.
< h1 class = "pgc-h-arrow-right" > integrated control of sow trotter fissures</h1>
prophylaxis
Every spring, winter or found that 30% of sows have hoof cleft phenomenon, can be added to the feed of pregnant, nursing sows 2% biotin + zinc methionate (organic zinc content ≥ 15%), continuous use for 14 days, both can treat, but also prevent the disease, the effect is obvious.
Prevention and treatment of secondary infections
Pigs that have had cracked hooves are sterilized and treated with zinc oxide ointment; For sows that have just developed hoof cleft, wash the hoof cleft or ulcer with 0.2% potassium permanganate solution, wipe dry, and apply erythromycin ointment once a day for 5 days. Due to secondary infections such as hoof cleft and hoof wear, limb and hoof inflammation and swelling can be treated with amoxicillin, fish stone resin and other drugs.
Integrated management
In the production to minimize all kinds of stress, pigs drinking water in line with drinking water hygiene standards, toxic and harmful substances do not exceed the standard. Strict biosecurity system, control feed mildew, programmed disinfection, immunization, health care, the addition of "green leaf 135 sow health pack" to reduce sow "sub-health", improve the resistance of the pig body.
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