Beef Cow Diseases Flashcards
Treatment of calf scours
Curing the diarrhea is not the point
Antibiotics does not help
Correct dehydration, electrolyte imbalance, and blood pH
Dehydration 6-8% and nursing– use commercial rehydration 2-6/day
Dehydration >6 and not nursing– IV fluids
Fecal score
0 normal
1 semi formed or pasty
2 loose with consistency, remains on bedding
3 watery feces, run through bedding material
B blood is present
Diarrhea prevention- cows
Calving- use clean surface
Provide good nutrition in late pregnancy
Full cows with bad udders and tests
ID problem and vaccinate cows in late pregnancy
Diarrhea prevention- calfs
Beef- ensure adequate colostrum intake and isolate sick ones
Dairy- colostrum is very important, house in clean area, provide good milk replacer, isolate sick ones
Shipping fever pneumonia (most important disease of beef cattle)
Occurs 2-4weeks following significant stress (weaning, processing)
1/3 calves affected and about 10% die
Recovered calves preform poorly
Pneumonia - HOSTS RISK FACTORS
Age and immunity of calf
Anatomy of bovine respiratory system
Pneumonia- environmental risk factors
Ventilation and humidity Overcrowding Stressors (hauling, injury, fatigue, anxiety, processing Dehydration and hunger Nutrition deficiencies
Pneumonia- agent risk factors
Pathogenicity and number of organisms
Viruses: ibr bvd brsv
Bacteria: mh, pm, hs
Bovine viral diarrhea
Pestivirus (RNA virus) 2 bio types: cytopathic or non cytopathic Abortion, respiratory, or GI signs Persistently infected calf (PI) Cow infected day 30-125 gestation Immunotolerant, sheds virus for life Mucosal disease
BRD
Immunosuppression
2degree bacterial pneumonia
Infection bovine rhinotracheitis (IBR)
Mild respiratory disease
Parainfluenza 3 (PI3)
Mild to sub clinical infections
Sets the stage for BRD
Bovine respiratory syncytial virus
Affects young beef and dairy cattle
Lungworms
Dictyocaulus Viviparus
Bronchitis and chronic pneumonia
2 degree bacterial infection
Pneumonia in calves
Stressed calves build less immunity
A virus infection reduces lungs ability to clear bacteria
Bacteria normally found in nose, get into lungs, and body’s response is pneumonia
Pneumonia: clinical signs
Sudden death High fever, depression, appetite Arched back, diarrhea, stiffness Rapid breathing, abnormal lung sounds, cough, runny nose Isolation
