Cattle Flashcards
(62 cards)
1
Q
What is the phyla of cattle?
A
Cordata
2
Q
What is the subphyla of cattle?
A
Vertebrates (segmented spinal column)
3
Q
What is the class of cattle?
A
Mammalia
4
Q
What is the order of cattle?
A
Ungulata (hoofed animals)
5
Q
What is the suborder of cattle?
A
Artrodactyles (even toed)
6
Q
What is the section of cattle?
A
Pecora (true ruminants)
7
Q
What is the family of cattle?
A
Bovidae
8
Q
What is the genus of cattle?
A
Bos (cattle)
9
Q
What is the group of cattle?
A
Taurine (of or like a bull)
10
Q
What are the species of cattle?
A
B. primigenius
B. taurus
B. indicus
11
Q
Another name for B. primigenius is …
A
Aurochs
12
Q
When and where did aurochs first appear?
A
India about 2 million years ago
13
Q
When and where did the last auroch die?
A
1627 in Poland
14
Q
Where where the Bod Taurus domesticated?
A
In the fertile crescent about 10,000 years ago
15
Q
Do Bos Taurus have humps?
A
No they are European
16
Q
Do Bos Zebu have humps?
A
Yes they are Indian
17
Q
Where do the two major lineages of Bos Zebu come from?
A
- Southeast Asia +China in the Indus valley of Pakistan
2. East Asia + Indian Subcontinent
18
Q
Are Bos Indicus and Bos Zebu the came thing?
A
yes
19
Q
Bull: (definition)
A
Intact male over one year of age
20
Q
Bullock: (definition)
A
Mature castrated male used for meat
21
Q
Heifer: (definition)
A
Young female up to time she has had a calf
22
Q
Beast: (definition)
A
Description term for adult bovine
23
Q
Free Martin: (definition)
A
Female calf born with a male twin
24
Q
Japanese Ox: (definition)
A
Grain fed steers destined for Japan
25
Stag: (definition)
Improper or late castration
26
Springer: (definition)
Cow or heifer close to calving
27
Fresh cow: (definition)
Dairy term for cow just calved
28
Dogies: (definition)
Orphaned cow
29
Mountain oysters: (definition)
testicles from a cow
30
Describe the Life of a Cow.
- Bred at 14 months
- Has first calf at 24 months ( without dystocia)
- Must produce a calf every year (9-10 total)
31
Describe the life of a Bull.
- Weaned at 6 months
- Fed good quality forage until breeding age
- Enters breeding herd at 2 years of age
- Usually only with cows during breeding season
- Usually kept for 2-4 breeding seasons
32
Describe Breeding / Culling season.
- Year round breeding - bulls stay out
- For early spring calving:
* breed during late may
* claves born Feb - Mar.
* weaned in October
- For late spring calving:
* breed late June - May
- For fall calving:
* breed during Jan - Feb
33
Describe the life of a Steer.
- Castrated shortly after birth
- Grazed on pasture until about 7,000 lbs
- Enters feedlot and is fed grain for 120 to 180 days or until 1,300 lbs
34
Describe the life of Heifer.
- If kept as a replacement for breeding herd:
* weaned at 6 months
* fed on good quality forage until bred at 14 months
* most producers will provide calving assistance to first
calf heifers
- If not going into breeding herd:
* treated same as a steer
35
Cattle Nutrition: Why are the Microorganisms unique?
They digest grass and the structural carbohydrates in plants
36
Cattle Nutrition: What are the 4 compartments of the ruminant stomach?
Rumen
Reticulum
Omasum
Abomasum
37
Cattle Nutrition: What are the structural carbohydrates?
Cellulose
Lignin
Hemicellulose
38
Cattle Nutrition: What are nonstructural carbohydrates?
Everything in the cell that is easily digestable or not apart of the structure of the plant
39
Cattle Nutrition: What are the classes of nutrients?
```
Water
Fats
Carbs
Vitamins
Minerals
```
40
Beef Cattle Management: What is a seed stock producer?
Cow-Calf producers that produce breeding stock for purebred or commercial operations
41
Beef Cattle Management: What is a Cow-Calf operation?
Use purebred breeding stock in crossbreeding programs to produce commercial offspring
42
Beef Cattle Management: What is a stocker operation?
Purchasing weaning calves from cow/calf producers and feed them out on pasture land
43
Beef Cattle Management: What are feedlots?
A segment of the beef industry whose sole purpose is to feed + fatten cattle
44
Beef Cattle Management: What do beef packers do?
Harvest finished cattle which are purchased from feedlots and other outlets
45
Beef Cattle Management: What is a consumer?
The true final segment of the beef industry
46
Beef Production: Breeds are distinguished by what?
- Color
- Color pattern
- Polled / Horned
- Extreme differences in form or shape
47
Beef Cattle Management: Name 3 major US beef breeds.
Shorthorn
Hereford
Angus
48
Beef Cattle Management: How do you improve the herd?
- Select animals that are superior to the herd average
| - Selecting traits that are highly heritable
49
List the Economically Important Traits.
1. Reproductive Performance
2. Weaning Weight
3. Post Weaning Growth
4. Feed Efficiency
5. Carcas Merit
6. Longevity
7. Conformation
8. Freedom From Genetic Defects
50
What are some characteristics of Reproductive Performance?
- goal is to have >85% calves weaned
- calf every 365 days
- entire calving season 90 days
- high heritability's
- best way to improve repro. performance is to improve environment
51
What two ways can you improve the environment for the herd?
- select bulls that are sound
| - crossbreeding
52
Reproductive Cycles: Estrus characteristics are ...
- 10 to 26 hours
- 18 hour average
- cycle year round
53
Reproductive Cycles: Estrous characteristics are ...
- 18 to 24 days
| - 21 day average
54
Reproductive Cycles: How long is gestation?
285 days
55
Reproductive Cycles: When does ovulation occur?
4 - 16 hours post estrus
56
What are some characteristics of Weaning Weight?
- measured by actual weight
- commonly adjusted to 205 day equivalent
- commonly expressed as a ratio of calves in the group
- (actual birth weight - birth weight / days between weights) 205 + birth weight + adjustments
57
What are some characteristics of Post Weaning Growth?
- weaned from finished weight
| - weaning weight + past weaning growth
58
What are some characteristics of Feed Efficiency?
- Lbs. of feed / Lbs. gained
- hard to measure
- Highly heritable
59
What are some characteristics of Carcas Merit?
- quality grades and yeild grades
- measured by ultrasound
- heritable > 30 %
60
What are some characteristics of Longevity?
- highly reproductive cows (4-15 years)
- bulls kept for 3-5 years
- possible culling
61
What are some characteristics of Conformation?
- form, shape, visual appearance
62
What are some characteristics of Freedom from Genetic Defects?
- usually occur frequently
- common defects
- many result in death
- get out of herd means to get rid of carrier
