20/05/2024 Flashcards
Heritability
P=G+E
30% Genetics
70% Environmental typically
Sperm Morphology
Motility
LDR
Numbers
Mis-shapen
Environment/Management
Can influence phenotype. e.g.
-Supplementary feeding , shade, temperature control, vaccination, irrigation, windbreak.
Protein
Crude
NPN
Trumpeter
Gonadotrophin release controlled by hypothalamus
0.001, H+, pH3. True or False?
True- 0.001 1/10 multiplied by 10 multiplied by 10
Ethylene
Ripening of fruit.
Release of dormancy
Stimulate shoot root growth
Stimulate leaf abscission
Cytokinin’s
Control major growth periods of the plant link to ethylene to control abscission flowers leaves fruits
Stigma
Female part of the flower top of pollen receptacle becomes style leaves to ovary
Pistil
Female collective parts of flower
Anther/Filament
Pollen producers stamen
Photosynthesis
6CO2+6H2 0=C6H12 06 + 6 02
Structure Soil
Percentage Sand-Silt-Clay
Nitrogen
Macro-involved in cell function division, protein synthesis, photosynthesis transfer of Energy
Epigeal Germination
Cotyledons pushed above soil line until provide energy until photosynthesis takes over
Name the key player in ruminant protein digestion?
Explain the differences in the anatomy of the monogastric? (to a ruminant)
The rumen is a fermentation tank.
Explain the design/operation of this tank.
Na H CO3
The ‘Bomb Calorimeter’.
What does this measure?
Calories/Kilojoules
Protein Digestion
When protein is digested it is broken down into peptides (short chains amino aids) which then becomes NH4+ and NH3-.
Two types of protein
Crude and NPN
Crude Protein (CP)
Protein that needs to be broken down to a usable form
NPN
Non-Protein Nitrogen
Rumen Microbes
Major source of protein in a bovines diet. Breaks downs CP and NPN to NH4+ and NH3-.
Microbes role
Break down protein. Continually flushes from the rumen to OMASUM to ABOMASUM. Are then absorbed
If Energy is limited? poor quality feed low microbe numbers
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.
