Cattle

Question 1

Cattle blood sampling sites

Answer 1

Jugular
Coccygeal
Ear vein

Question 2

Cattle reproductive cycle

Answer 2

Proestrus -development of follicles in ovary
Estrus - ovulation
Metestrus - formation of corpus luteum (prepares uterus for pregnancy)
Diestrus - corpus luteum regresses if no calf
Anestrus - period of reproductive inactivity

Question 3

Common bovine disease and prevention

Answer 3

Bovine respiratory diseases - vaccination, minimal stress + handling, good nutrition + ventilation
Mastitis - good milking hygiene, regular udder checks
Foot and mouth disease - biosecurity measures, vaccination, reporting suspected cases

Question 4

Dairy heifer life cycle

Answer 4

1. after birth calf stays with cow for 24-72 hours to receive colostrum
2. removed from mother and fed milk for 6-12 weeks
3. weaned at 10-12 weeks
4. served at 15-20 months
5. calve after 9 months gestation
   6 begin to lactate and enter dairy herd

Question 5

Milking procedure

Answer 5

After calving lactates for 10 months
Served again after 3 months (dried off to calve after 10)

Question 6

Answer 6

Question 7

Answer 7

Question 8

Answer 8

Question 9

Answer 9

Question 10

Herd
Bull
Bullock, steer
Heifer
Cow
Cull

Answer 10

Collective name for cattle
Male, Entire
Male, Castrated
Female, not calved
Female, calved
Removed from herd

Question 11

Critical values of cattle

Answer 11

Temp - 38-39
HR - 45 - 80
RR - 15 - 30