Mastitis

Question 1

mastitis defences

Answer 1

teat canal - keratinocytes, lipid secretions, sphincter muscle
phagocytes
frequent milking
antibodies
lactoferrin

Question 2

individual signs of mastitis

Answer 2

abnormal secretions
size
texture
lack of milk
blind or non functional glands
hungry calf
pain - altered gait
enlarged supramammary lymph nodes
teat and skin lesions

Question 3

clinical exam

Answer 3

visual exam
palpation of gland and supra mammary lymph nodes
stripping
california mastitis test
skin adjacent to udder
inspect and palpate mammary veins

Question 4

mastitis classifications

Answer 4

peracute/acute/chronic
environmental/contagious

mild - abnormal milk
moderate - abnormal milk with abnormal gland
severe - abnormal milk, gland and sick cow

Question 5

pathogens

Answer 5

contagious - staph aureus or strep agalactiae (gram +ve)

environmental -
strep spp, bacilis, clostridium (gram +ve)
e coli, psuedomonas (gram -ve)

Question 6

septic mastitis

Answer 6

coliforms - e coli
endotoxemia - weakness, tachypnoea, tachycardia, rumen stasis, diarrhoea
endotoxemia –> hypocalcemia
bacteremia
mortality

Question 7

summer mastitis

Answer 7

dry cow
increased with dirty envinroment
purulent - abscessation of gland

Question 8

common issues

Answer 8

incorrect teat spray application
teat end damage
excessive vacuum
overmilking
undermilking
unsuitable teat cup liners
cup slip
poor cluster removal