Unit 1 - Mastitis (Part 3 and 4) Flashcards
Why is it not recommended to use a strip cup?
Because it can act as a major fomite
What is one of the best technique for identifying early clinical mastitis and subclinical mastitis?
Forestripping
If an udder is infected, what will it feel like on palpation?
It will be hot and swollen - chances are high it is painful as well
How is the milking machine powered?
via vacuum
What controls the air pressure in the pulsation chamber?
The pulsator (60:40 or 50:50 are most common ratios)
What are the negative effects of severe vacuum fluctuation?
Milk impaction on teat ends and bacteria in the milk or teat ends can be forced into the quarter
What is the objective of pre-milking udder hygiene?
To reduce the bacterial contamination on teats immediately before machine attachment and to minimize the number of bacteria and sediment in the milk
Aside from evaluating for mastitis, what is the purpose of fore-stripping?
To get rid of the poorest fraction of milk
What type of mastitis does pre-milking teat dipping help prevent?
environmental mastitis
When should the milking machine be applied post udder preparation?
90 - 120 seconds after initiation
Post-milking teat dipping can reduce new infection rates by as much as ____%.
70%
What steps of the milking process can robotic milking systems do?
The entire udder prep, milking functions, and post-milking teat dipping
What environmental conditions may increase mastitis?
Overcrowding, poorly designed stalls, and poor sanitation, ventilation, and nutrition
How long may the teat sphincter remain open post milking?
2 hours; this is why having a clean environment is so important
What type of mastitis frequently follows heat waves in the summer?
Coliform
Are housed or pasture cows at a greater risk of environmental mastitis?
housed cows
What is the preferred bedding type for dairy cows?
sand and lime
How can stray voltage affect cows during milking?
It can cause poor milk let-down, refusal to eat or drink from metal feeders and bowls, and ultimately mastitis
What vaccines are recommended to treat S. aureus mastitis?
E. coli or Salmonella core bacterins - J5 or Endovac-Bovi
When are vaccines for S. aureus mastitis given?
A month before the beginning of lactation and once or twice during lactation
Aside from vaccination, what other methods can be used for prevention of mastitis?
Genetic control, calf milk pasteurizer, and formic acid treatment of waste milk and colostrum