Cattle Domestication

Question 1

Taxonomy

Answer 1

Artiodactyla, rumintia, bovine, bovine

Question 2

Species

Answer 2

Bos primigenius - Aurouchs

Tauraus - EU domestic
Inidicus - zebu
poephagus - yak
gurus - gaur

Bison
bos bison bison USA
b b bonuses - EU

Buffaloo - Bubalus

Question 3

DOmesticatiom

Answer 3

result, now a separate species due to the drastic changes

Question 4

Breeding goals of Dairy

Answer 4

Milk performance 
- avg milk yield
- max daily milk yield kg 
FCM  lg 
- protein yield 

Chemical composition 
- fat content 
protein content 
PFR
Fat protein difference 
Lactose content 
SCC

Question 5

Breeding goals / charaertierstic of beef and dual purpose

Answer 5

Calvin interval, conception rate
birth weight to calving ease
maternal nursing abilities
bull performance - avg daily gain, scrotal circumference

Question 6

Repro in cattle

Answer 6

Bovine placental lactose in mammogeneiss and milk production
- uniparous, low repro potential, no seasonality, continue polyestrous
low twinning, freemartinism

Question 7

Cycle

Answer 7

20-21 days, biphasic
heat 24-48 hours

ovulation is sponatnoues, 10-14 hours after clinical heat
mature follicle are small but palatable
first heat after calving 15 days pp, often silent

Question 8

Gestation

Answer 8

282 days, bPL maintain, P4, Placental oestrogen

fertilisation occurs in f tube, migration to uterus @ day 4-5
implantation at day 21

location 300 days , dry period of two months

Question 9

Bovine genetic diseases

Answer 9

BLAD, Chediak Higashi

Blood / circulation
= hyperbilirubinaemia
- protoporhoiria
platelet, hameopbila B facto 9

metabolic
lipofuscinois, gangliosidoiss
mucopolysaccharidios, DUMPS n holestein

Question 10

breed conditions

Answer 10

Holstein - dumps, CVM, IX haemophilia, hypertrcohos, olgodontia

Simmental - platelet bleeding 
Limo protoporphoria 
Brow swiss  - weaver, albinsim 
Dexter - dwarfism 
Brahma - Pompe disease 
Shorthorn, para keratosis, bovine zinc hereditary disease