Common cattle diseases and treatment pdf
Please forward this error screen to 96. Cause Coccidiosis in young calves is caused by infection by protozoan parasites called Eimeria common cattle diseases and treatment pdf. Infection causes a loss of absorptive capacity of the gut with consequent diarrhoea and possibly dysentery.
Outbreaks of disease are commonly seen 3-4 weeks after mixing groups of recently-weaned dairy calves. Disease outbreaks occur in young dairy calves associated with overstocking and contaminated accommodation. Fig 2 Contaminated surface water is a risk for coccidiosis, paratuberculosis, leptospirosis and salmonellosis. This area must be fenced off and mains water supplied where available.
Fig 3 Coccidiosis in a group of beef calves showing sudden onset of profuse foetid diarrhoea containing mucus and flecks of fresh blood with staining of the perineum and tail. This outbreak occurred during hot summer weather which caused the stream supplying water to this field to dry up to pools of contaminated surface water. Fig 4 Straining with passage of only mucus. Partial eversion of the rectum may occur in severe cases. More usually, chronic wasting and poor appetite are the presenting signs.
Morbidity is high but mortality, even in severe cases, is low. Convalescence is protracted in all cases causing financial losses due to poor weight gains. Fig 5 Early weight loss in beef calves with diarrhoea caused by coccidiosis. Many calves affected – parasitic gastroenteritis such as type I ostertagiosis when at pasture during late summer, and salmonellosis. If only one calf is affected – intussusception, abomasal ulceration, persistent infection with BVDV, necrotic enteritis, ragwort poisoning, peritonitis will be considered by the veterinary practitioner.
Diagnosis Veterinary diagnosis is based upon t. Interpretation of faecal samples is not simple because there are low numbers of oocysts present in the faeces of many normal calves. The stage of infestation also greatly influences the number of oocysts present in faeces. Histopathology findings of coccidiosis in the gut of a dead calf confirms the clinical diagnosis. Toltrazuril and diclazuril can be used for both treatment and prophylaxis of coccidiosis. Oral fluid therapy may be indicated in certain cases.
Parasitic gastroenteritis such as type I ostertagiosis when at pasture during late summer, leptospirosis and salmonellosis. Even in severe cases, peritonitis will be considered by the veterinary practitioner. Persistent infection with BVDV, 2016 Mississippi State University Extension Service. Click here to get real; time weather reports during planting season.