Calf water demand is large compared to cattle then the impact of diarrhea is severe. Diarrhea is the main cause of calf mortality is due to dehydration caused by excessive loss of electrolytes in the body fluids and pathogens than itself.
1. Agent
According to the degree of immunity to the disease, pathogens, raising environmental, health status of calves, the symptoms, the treatment effect of calf diarrhea appears to be very diverse . Calf diarrhea is divided into non-infectious diarrhea caused by a lack of colostrum, milk quality defects, excessive replacer supply, or lack of temperature, stress and infectious diarrhea by bacteria, viruses, parasites.
1) Non Infectious Diarrhea
By severe bowel movements or indigestion, the water intake would be dehydration as excessive emissions or not absorbed through the intestines.
2) Infectious Diarrhea
Bacteria, viruses, parasites, etc. are susceptible to intestines and deprived of moisture in the gut wall. The rate at which a fast and severe dehydration are fragile and a high mortality rate than non-infectious diseases.
① E. coli Infection
Newborn calf diarrhea caused by E. coli and caused a lot of time from 2 weeks of age, white scour also called. The main symptoms are sometimes mortality by dehydration, corruption odor, water diarrhea stool (light gray, white, yellow).
② Salmonellosis
1-4 months to generate more calves to be due to Salmonella and show yellow watery, corruptive bloody stool that represents and death by dehydration.
③ Rotavirus Infection
Occurred mainly from the fall over the next year in the spring. The young are highly susceptible to , regardless of all cattle age, the incidence symptoms are severe. Such as diarrhea and milky water tends to repeat the trend each year.
④ Coronavirus Infection
Usually occurs at the age of 7 days or more calves (usually 4-6 weeks), infected objects showed the severe yellow watery diarrhea mixed with coagulated milk or eliminated mucosal tissue between 2-4 days.
⑤ Coccidiosis
The infection caused by a parasite (Plasmodium) that coccidium. Mulberry states of brown diarrhea becomes severe case of bloody mucus.
⑥ Cryptosporidiosis
Such as watery yellow or white clear viscous characterized by diarrhea by parasitic protozoa Cryptosporidium, younger and weaker is more highly sensitive about many cases of the more severe in newborn calf.
⑦ Strongyloides papillosus Infection
It occurs from spring to fall. Occurs in the summer from the small farms by the parasite that causes sudden death (pokri disease) and low degree of the infection causes mild diarrhea.
2. Epidemiology
High incidence at 1-3 weeks old calf.
3. Clinical Signs
① E.coli infection ~ white or pale yellow diarrhea
② Salmonella infection ~ yellow green or bloody diarrhea
③ Dehydration
4. Prevention and Treatment
1) Prevention
Management |
Adequate supply of colostrum as soon as possible after delivery
Disinfect birth place of the barn during 1 week before and after delivery in every day
Replacer feed quality
Postpartum breast and veal mouth disinfection
Disinfection, such as artificial milker |
Meducation |
vaccination
( DS Corona.Rota cattlevac, Calf E.coli vaccine )
Probiotics
Immunomodulator(Ig all 600, Immunosti )
Fluid Therapy
Anti-Diarrhetica (New Bisrong) |