Terminology for Breeds Flashcards Preview

CTC Junior Vet science > Terminology for Breeds > Flashcards

Flashcards in Terminology for Breeds Deck (27):
1

How many breeds of cattle in the world

250

2

How many breeds of cattle in the US

80

3

Breed

A group of animals of common decent possessing distinctive characteristics that distinguish them from other groups within the same species

4

Purebred

Refers to the purity of ancestry and implies genetic uniformity of all characteristics

5

Crossbreeding

Most efficient means of commercial production, but highly productive purebreds are the backbone of successful commercial crossbreeding programs

6

How does crossbreeding work

use breed that possess complementary characteristics to produce desirable offspring

7

Major characteristics important in beef production include

Mature body size
Milk production
Age at puberty
Environmentally adaptable
Rate and efficiency of gain
Muscle expression
Cutability
Marbling

8

How does mature body size vary

Vary with breed and gender
normally mature cows weigh less than a mature bull of any breed

9

Mature body size is proportional to what

Body size at any size at all stages of growth

10

Milking ability is related to what

Mature size because larger animals have the ability to consume more feed stuffs that may be used for milk production

11

Heavy milking cows have issues because

Heavy milking cows produce milk at the expense of other body functions
if nutrition is inadequate, heavy milkers may become thin

12

As the emphasis on the percentage of lean in slaughter cattle increases, the importance of a breed's what increases?

Muscularity

13

Age at puberty is important because

Cattle that reach puberty at an earlier age conceive at an earlier age

14

The ability of a cow to conceive at an earlier age is important because

They have the potential to have a longer productive life, which is economically important to cattle producers

15

Other names for Marbling

intramuscular fat or taste fat

16

Marbling is used to determine what

USDA quality grades

17

USDA Quality Grades are indicators of

Palatability

18

Marbling increases until

until cattle reach physiological maturity, which normally occurs prior to 30 months of age

19

Modern beef cattle can be classified in 2 types

Bos Indicus
Bos Taurus

20

The classifications of cattle are based on

The characteristics, but not all are limited to these characteristics

21

Bos Indicus is also known as

Zebu-type

22

Bos Indicus cattle characteristics are

Humped
Adapted to tropical and sub-tropical environments

23

Bos Indicus cattle are adapted to which stresses

Stresses of heat
Humidity
Parasites
And poorly digestible forages

24

Why are Bos Indicus significant in the southern part of the US

Environmental adaptability and hybrid vigor of cattle with a percentage of zebu - type breeding

25

Common Bos Indicus breeds in the US

Brahman
Brangus
Beefmaster
Santa Gertrudis
Simbrah

26

Bos Taurus are descended

From the ancient Celtic Shorthorn

27

Common Bos Taurus breeds in the US

Charolais
Chianina
Gelbvieh
Limousin
Maine - Anjou
Salers
Simmental
Tarentaise
Texas Longhorn
Angus
Hereford
Red Angus
Red Poll
Shorthorn