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Flashcards in Growth and Development Deck (21)
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1

Adipose refers to

fat

2

Sequential Pattern of Tissue Growth

Bones
Internal Fat
Subcutaneous fat

3

Growth and Development is highly dependent on which system?

Endocrine (secrete hormones into the circulatory system)

4

Major Hormones Affecting Growth

Growth Hormone
Thyroid Hormone
Estrogen
Testosterone
Insulin
Glucagon

5

Growth ends at

Maturity

6

Growth curve includes:

Conception: Prenatal growth
Birth to Puberty: Rapid Growth (primarily muscle)
Puberty into Maturity: More rapid fat deposition
Maturity, changes due to fat
Three Lines: Birth, Rapid Growth, Maturity

7

Growth

an increase in body size, muscle, bone and connected tissues

8

Development

a change in composition, structure or abilities

9

Number of muscle cells is determined by birth

True, growth occurs during hyperplasia

10

Postnatal growth from most to least

Muscle>Fat>Bone

11

Factors Affecting the Growth Curve

Frame size, sex, genetics

12

The effect of Frame Size on growth

Larger framed animals are more efficient

13

The effect of Sex on growth

Steers, Gilts and Wethers are most efficient (Swine are different than cattle and sheep)

14

Insulin Control of Growth

regulates metabolism by promoting absorption of blood sugar into fat and muscle cells

15

Glucagon

draws on body stores of fat to increase blood sugar level

16

_________ percent of growth traits can be passed on to the offspring.

20-40%

17

non-hormonal compounds which redirect nutrient use away from fat and towards muscle development

Beta-Agonists

18

Types of Beta-Agonists

Ractopamine
Paylean
Optaflex

19

Muscle grows faster than bone

True

20

Benefits of Beta-Androgenic Agonists

increase protein deposition
decrease fat deposition
increased rate-of-gain
increased feed efficiency

21

when animals are purchased based on the final grades or values of each individual animal

grid marketing