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Animal Growth Section Flashcards

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1
Q

Name some reasons why we should study animal growth?

A

Disease prevention therapy

Tissue regeneration

Prevent wasting conditions

OptimiZe health and wellbeing

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2
Q

Def of growth

A

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

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3
Q

Def of hyperplasia

A

Increase in cell number

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4
Q

Hypertrophy def

A

Increase in cell size due to accretion of cell products

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5
Q

Def of differentiation

A

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

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6
Q

What is….

Neonatal

Prenatal

Postnatal

A

N- newborn

Pre- before birth

Post after

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7
Q

Def of allometry

A

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

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8
Q

What does allometry focus on

A

Tissues that will collect nutrients

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9
Q

Def of apoptosis

A

Programmed cell death

Eng-

Cell destined to die at specific stage of development

Exp: webbed fingers

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10
Q

Def of atrophy

A

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

Due from lack of use usually

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11
Q

def of development

A

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

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12
Q

What is one thing that can influence development give example

A

Gender

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

*pigs exception

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13
Q

What two things get the most nutrients

A

Brain and central nervous system

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14
Q

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

A

Placenta and fetus

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15
Q

Explain the growth curve of average daily gain (abcd)

A

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

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16
Q

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

A

Fat

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17
Q

The animal market chart

What grows at a slow steady rate

A

Bone growth

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18
Q

What does epiphysis mean

What does diaphysis

A

E- end of bone

A- shaft

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19
Q

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

A

Cartilage

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20
Q

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

A

Less

More

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21
Q

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

A

Epiphyseal growth plate

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22
Q

What is within the epiphyseal growth plate

A

Epiphyseal cartilage

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23
Q

What causes a mature bone to be remodeled?

A
  1. Lack of use
  2. If another area is in need of calcium
    Exp: lactation
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24
Q

A myo tube is just a

A

Immature muscle fiber

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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
31
What is the name of the common breed that has double muscling
Belgian blue and peadmonte
32
What other animal has the myostatin defect for double muscling but not the extreme end of it
Limousine
33
What does double muscling in cattle cause
More muscle fibers Larger muscle fibers Higher% white muscle fibers Less body fat High incidence of dystocia (calving difficulty)
34
What is dystocia
Calving difficulty
35
What substitution in myostatin particularly limousine produce an intermediate phenotype without significant negative effects on birth and growth traits
F94L It changes only one amino acid so less noticeable
36
What two things contribute to post natal muscle growth
DNA accretion Protein accumulation
37
What happens during DNA accretion
Nuclei incorporated into pre existing muscle fibers by satellite cells Increase muscle fibers capacity for gene expression and growth
38
What accounts for most of post natal muscle growth /hypertrophy
Protein accumulation
39
When does accumulation of myofibrillar proteins occur? (Protein accumulation)
When protein synthesis exceeds protein degradation
40
What = accumulation /accretion
Synthesis - breakdow Exp: if you break your leg, breakdown would exceed synthesis=atrophy
41
What is lysine
Amino acid Biggest restriction on protein accumulation
42
what is a cluster of fat cells called
Lobbule
43
How much does lipid account of tissu How much do triglycerides account of lipids
76-94% 90-99%
44
How much can the volume of an adipocyte cell increase
Greater than 1000 fold (hypertrophy is important)
45
In the phases of fattening, ________ is followed by _______ but ____________ of new fat cells (hyperplasia) can occur throughout life
Hyperplasia, hypertrophy, recruitment
46
Early in life the cause of the increase in adipose tissue is due to
Increase in # of fat cells (hyperplasia)
47
What is the downside of fat
There is no limit on how much fat you can have
48
Fat cells are all created equal true or fals
False they are not all created equal
49
What is beta-adrenergicagonists
Hormone that binds receptor
50
When an animal is Nutritionally restricted, what happens?
?
51
What is the FDA hormone for growth regulation in pigs
Paylean (ractopamine)
52
What does paylean do
``` Increases muscle Decreases fat Improves efficiency Saves feed Reduces waste Increases stress ```
53
Name some FDA approved growth regulators in cattle
Estradiol Progesterone Optaflexx
54
Which growth regulation in cattle is dismissed
Zilmax
55
What are the oldest and longest improved growth regulations in cattle
Estradiol | Progesterone
56
What is one of the more common growth regulations in cattle
Optaflexx
57
What is the withdrawal time for growth regulations in cAttle What is the noteable exception to what is not approved as growth prominent
There is none Growth hormone
58
What is a half life
How long growth promontent stays in body
59
In the bathtub scenario what does optaflexx do with beta agonists zilmaxx?
Optaflexx- primarily increases protein synthesis or "water flow" Zilmaxx- primarily reduces protein degradation or "water draining"
60
Def of nutrition
Science that deals with nutrients in food and feed as they relate to health and life
61
Def of nutrient
Any food constituent that aids in support of life
62
The cost of feed is _____ % of the total cost of livestock production
50-80%
63
What are the 6 major classes of nutrients
``` Water (most important) Carbohydrates Proteins Fats Vitamins Minerals ```
64
What is essential versus nonessential nutrients
Essential is nutrients your body cannot synthesis in sufficient quantities to meet needs you need to consume it
65
What distinguishes proteins
Nitrogenous compounds
66
Water soluble vitamins are considered
B-complex vitamins
67
What are some major functions of nutrients
``` Body maintenance Growth Production of meat, milk, wool... Work (energy/atp) Reproduction Regulate body processes ```
68
What do nutrients regulate body processes
Gene expression Protein production Hormone action Supply energy for metabolic processes
69
In plants vs animals, water
Varies with both 45-90%
70
Animals vs plants carbohydrates are what
High in plants Low in animals
71
In plants vs animals cell walls/cell membranes consist of
Carbs in plants | Lipid and proteins in animals
72
Plantvs animals | Skeletal consists of
Fiber for plants | Minerals for animals
73
In plants vs animals energy is stored
Plants- starch | Animals- fat and glycogen(carb)
74
What is major carb in animals
Glycogen
75
In water you can what (sources)
Drink eat metabolism
76
What are the functions of water
Transporting medium Maintains body temp Solvent
77
Proportions of animals body that is water ________ | An embryo to a newborn difference in percentage of proption of water
Varies 90% embryo to 70% newborn shows differentiation
78
All animals depend on nutrients derived by ____________ where sunlight turns water and carbon dioxide into sugar
Photosynthesis
79
What does photosynthesis do
Sunlight turns water and carbon dioxide into sugar
80
What is the equation for photosynthesis
6H2O + 6 CO2 + 673 kcal get turned into C6H12O6 + 6O2 Kcal = energy from sun (atp)
81
What do carbohydrates contain
Carbon hydrogen and oxygen
82
What do carbs include
Sugars Starches Cellulose (Fiber)
83
What are monosaccharides equations
C6H12O6 | C5H10O5
84
Name the six carbon sugars monosaccharides
Glucose Galactose Fructose Mannose
85
Name the 5 carbon monosaccharides
Ribose Arabinose xylose
86
Glucose and fructose compared show what
That they share common components but diffeeent structural formation
87
Name the disaccharides
Sucrose Maltose Lactose
88
What is sucrose made up of? Maltose Lactose
Glucose and fructose Glucose and glucose Glucose and galactose
89
What is the sweetest disaccharide how much sweeter are the others
Sucrose 1/3 as sweet is maltose 1/6 as sweet is lactose
90
When creating sucrose you bond _____ and _____ to create sucrose and you leave out _____ _____
Glucose and fructose Metabolic water
91
What are the major source of animal carbohydrates
Polysaccharides
92
Anything with (. ) n means what
You could have thousands of them
93
What's an example of a polysaccharide
Starch
94
Starch is a ________ _________ | That is extensively what
No structural carbohydrate That digests and or ferments rapidly We digest Cows ferment
95
What are the major plant kinds of starches Animal?
Amylose Amylopectin Glycogen

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