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Flashcards in Animal Growth Section Deck (95)
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1

Name some reasons why we should study animal growth?

Disease prevention therapy

Tissue regeneration

Prevent wasting conditions

OptimiZe health and wellbeing

2

Def of growth

Increase in size or mass of structural tissues or organs- does not include excess adipose tissue (fat) deposition

3

Def of hyperplasia

Increase in cell number

4

Hypertrophy def

Increase in cell size due to accretion of cell products

5

Def of differentiation

Process of acquiring characteristics distinct from a progenitor cell or tissue, such as occurs in the progressive diversification of cells and tissues of the embryo

6

What is....

Neonatal

Prenatal

Postnatal

N- newborn

Pre- before birth

Post after

7

Def of allometry

Relationship of growth of a part of an orgnaism to growth of the whole organism

Eng-
Not everything grows at same rate

Exp: calf born with really long legs

8

What does allometry focus on

Tissues that will collect nutrients

9

Def of apoptosis

Programmed cell death

Eng-

Cell destined to die at specific stage of development

Exp: webbed fingers

10

Def of atrophy

Decrease in size of a cell, tissue, organ or part (opposite of hypertrophy)

Due from lack of use usually

11

def of development

Change in form and or function of the animal or tissue which results from changes in rate of increase or decrease of individual components of the body of tissue

Eng- as animal develops it doesn't necessarily look the same some tissues grow faster some slower
Goal: to allow animals to survive/be competitive

12

What is one thing that can influence development give example

Gender

Males grow faster/ larger mature size
Castrate: intermediate
Females: estrogen accelerates closure of growth plates so not as big

*pigs exception

13

What two things get the most nutrients

Brain and central nervous system

14

What do females also give a lot of nutrients to besides brain and central nervous system

Placenta and fetus

15

Explain the growth curve of average daily gain (abcd)

All the components start developing at the same time, but they do so at different rates so some finishes early and others take time

Exp: brain grows fast early but then slows dramatically as you get older

16

In the chart of a market animal growth what grows faster as the animal matures

Fat

17

The animal market chart
What grows at a slow steady rate

Bone growth

18

What does epiphysis mean

What does diaphysis

E- end of bone

A- shaft

19

In the diagram of bones anything that was white in the bone was...

Cartilage

20

As the bone in the bone chart matures, there was ________ cartilage and ________ compact bone

Less

More

21

What is the white space at the end of the bone called? It refers to where the bone is growing...

Epiphyseal growth plate

22

What is within the epiphyseal growth plate

Epiphyseal cartilage

23

What causes a mature bone to be remodeled?

1. Lack of use

2. If another area is in need of calcium
Exp: lactation

24

A myo tube is just a

Immature muscle fiber

25

In muscle fiber formation, what is the window where they are formed

Early- it is done quite a bit before parturition

26

What causes a runt

Nutrient restriction

27

Why could the second set of horses produce a bigger colt compared to the first set if they are the same cross?

The mom in #2 was larger and could provide enough nutrients to produce that bigger colt

28

What is myostatin

Growth factor that inhibits muscle development

29

What do naturally occurring myostatin mutations cause

Double muscling in cattle and other species

30

In double muscling you have a lot more _______

Myofibers