20/05/2024

Question 1

Heritability

Answer 1

P=G+E
30% Genetics
70% Environmental typically

Question 2

Sperm Morphology

Answer 2

Motility
LDR
Numbers
Mis-shapen

Question 3

Environment/Management

Answer 3

Can influence phenotype. e.g.
-Supplementary feeding , shade, temperature control, vaccination, irrigation, windbreak.

Question 4

Protein

Answer 4

Crude
NPN

Question 5

Trumpeter

Answer 5

Gonadotrophin release controlled by hypothalamus

Question 6

0.001, H+, pH3. True or False?

Answer 6

True- 0.001 1/10 multiplied by 10 multiplied by 10

Question 7

Ethylene

Answer 7

Ripening of fruit.
Release of dormancy
Stimulate shoot root growth
Stimulate leaf abscission

Question 8

Cytokinin’s

Answer 8

Control major growth periods of the plant link to ethylene to control abscission flowers leaves fruits

Question 9

Stigma

Answer 9

Female part of the flower top of pollen receptacle becomes style leaves to ovary

Question 10

Pistil

Answer 10

Female collective parts of flower

Question 11

Anther/Filament

Answer 11

Pollen producers stamen

Question 12

Photosynthesis

Answer 12

6CO2+6H2 0=C6H12 06 + 6 02

Question 13

Structure Soil

Answer 13

Percentage Sand-Silt-Clay

Question 14

Nitrogen

Answer 14

Macro-involved in cell function division, protein synthesis, photosynthesis transfer of Energy

Question 15

Epigeal Germination

Answer 15

Cotyledons pushed above soil line until provide energy until photosynthesis takes over

Question 16

Name the key player in ruminant protein digestion?

Question 17

Explain the differences in the anatomy of the monogastric? (to a ruminant)

Question 18

The rumen is a fermentation tank.
Explain the design/operation of this tank.

Question 19

Na H CO3

Question 20

The ‘Bomb Calorimeter’.
What does this measure?

Question 21

Calories/Kilojoules

Question 22

Protein Digestion

Answer 22

When protein is digested it is broken down into peptides (short chains amino aids) which then becomes NH4+ and NH3-.

Question 23

Two types of protein

Answer 23

Crude and NPN

Question 24

Crude Protein (CP)

Answer 24

Protein that needs to be broken down to a usable form

Question 25

NPN

Answer 25

Non-Protein Nitrogen

Question 26

Rumen Microbes

Answer 26

Major source of protein in a bovines diet. Breaks downs CP and NPN to NH4+ and NH3-.

Question 27

Microbes role

Answer 27

Break down protein. Continually flushes from the rumen to OMASUM to ABOMASUM. Are then absorbed

Question 28

If Energy is limited? poor quality feed low microbe numbers

Answer 28

Microbes become less efficient at using NH3- instead of being converted to microbial protein they are absorbed across rumen wall into bloodstream (liver) converted to urea and excreted as urine.