仔猪罕见病(国外英文资料).docVIP

仔猪常见病 Pig foot hoof disease is the current in the scale, intensive pig farms a kind of common disease, main show is arthrocele, hoof horniness hyperplasia crack, shell harden, brittle rupture, causing swine, gait instability, suspended the hoof, limping, and even crawl, the serious influence the performance of the sows and service life, is also one of the main diseases of sows abnormal elimination. There are many causes of hooves, and the incidence is also affected by climate, especially in the case of long white pigs. In see pig farms, especially newly introduced changbai backup pigs, the most serious, main show is the hoof horniness hyperplasia, cracks, hoof shell burst, causing a secondary infection aggravated the disease. (1) the cause of the disease... There are various factors, nutritional factors, environmental factors and pathological factors. The variety factor: the newly introduced lean pork, especially the young white pig, and the second is baymax, which is slightly better than the big white pig. Lean good varieties of fast growth and weight gain and limb hoof and developmental disorders, make limb hoof under pressure increases, coupled with the gilt and young mother pigs feet pad and tender, and easy to wear and tear cracks, hoof thin shell is easy broken, Yi Jifa infection, it is also a backup more incidence of pig, the main reason for the serious situation. Old sow the hoof pads and shell the relative development mature, secondary infection resistance is strong, so the old sow despite hoof cutin hyperplasia of cracking and the proportion of the shell burst is big, but the symptom is lighter, less claudication. (2) nutritional factors; The deficiency or imbalance of certain nutrients in the feed of mother pig causes the relative lack of certain elements. 1) calcium phosphate imbalance: performance with pig unkempt coat is easy to fall off the hoof shells transverse crack claudication, severe cases hoof crown swelling, pain, limb often shake or suspende