Lecture 5: Introduction to herd Health Flashcards
What is herd health management
Practice in which methods are used to optimize health, welfare and production in a population
- treat sick animal with a big picture perspective
What are 2 preventative measures that can be taken to promote herd health
- Good nutrition
- Clean environment
What are two basic strategies to promote herd health
- Biosecurity
- Biocontainment
What is biosecurity
Exclude and prevent disease from entering
What is biocontainment
Control or eliminate disease that is already present
What is ideal biosecurity
Close herd
A closed herd does not have what 7 things
- No purchasing new livestock
- No co-mingling stock
- No wildlife exposure
- No neighbors with livestock
- No bad fences
- Don’t use commercial livestock haulers
- Don’t go to livestock fairs or shows
What can you tell by looking at this cows nose
Not feeling well, healthy cows keep noses clean
Case example: 5-7 month old heifers experiencing anorexia, depression, conjunctivitis, fever, nasal discharge, nasal plaques, dry cough, hyperemic noses. What is a common respiratory disease of cattle that is a potential differential here
Infectious bovine rhinotracheitis
How do you confirm infectious bovine rhinotracheitis dx
PCR on nasal swabs
What are the 5 big respiratory viruses in cattle
- Bovine herpes virus 1 (aka IBR)
- Bovine respiratory syncytial virus (BRSV)
- Parainfluenza 3 virus (PI3)
- Bovine coronavirus
- Bovine viral diarrhea virus (BVDV)
What are the 3 major factors that can contribute to the development of bovine respiratory disease complex
- Virus
- Stress
3 secondary bacterial infections
What are the 3 general categories of beef cattle production groups
- Cow/calf farms
- Backgrounding or stocker
- Finishing
What happens at backgrounding or stocker beef cattle farms
After calves are weaned they will continue to graze on pasture and may receive supplemental feed to help it grow and mature
What happens at finishing beef cattle productions
Cattle will feed on roughage and grain in order to meet nutritional requirements. Cattle may be finished on grass or grain. After 4-6 months when market weight is met they are ready for harvest
Describe the basic dairy production groups
- Birth—> 3 months kept in calving hutches
- Animal from 3–> 26 months, begin breeding them
- Milk production- first calving at 37 months
When do dairy cattle usually have their first calf
37 months
What is mastitis
Inflammation of mammary gland as a result of intramammary infection
What is cow related mastitis
Bacteria are found in the udder and sometimes on the cow itself
How would you manage cow related mastitis
- Make sure hands of milker are clean
- Use udder clothes
- Clean and functioning milk machine
- Teat disinfection