Quiz 3 Flashcards
If a sow is pregnant, what will you see on the ultrasound?
-black ovals close together
What does the lean-meater do?
-measures the amount of backfat an animal has.
How does the lean-meater work?
-It is an ultrasound
-3 dots on the left side determine layer
-measures fat in mm
What do you put on the probe of the lean-meater?
-lube
-motor oil
-cooking oil
Can an ultrasound pass through air or air bubbles?
-No
What is important about the probe and where is it placed?
-probe placement is important
-place probe behind last rib
What is it called when a sow gives birth?
-farrowing
What hormones are associated with pregnancy?
-progesterone
-prostaglandin
-estrone sulfate
When can you detect a pregnancy?
With an ultrasound?
-17-24 days after breeding
-28-80 days
What is the probe placed for an ultrasound for a pregnancy detection?
-on the flank between the last 2 nipples
What type of ultrasound machines are there?
-Doppler
-A-mode
-B-mode
How does an ultrasound work?
-soundwaves through the transducer
Lean-meater math
-1 inch = 2.54cm = 25.4mm
-10mm = 2/5 inch
- ?mm / 10mm = ? inches
What is the max amount of fat a pig can have?
-1 inch
How long is a gilt’s puberty?
-160-190 days
When are replacement gilts selected and what are they selected for?
-At 4-5 months of age
-structure
-underline and vulva
-size and fitness
-litter size and weight
Why would a sow be culled?
-reproduction failure
-age
-small litter
-fet and leg disorder
Magnet
-end in the reticulum
-help prevent hardware disease in cattle by collecting it and not letting it pass through the body
What is the 205 weaning weight and what is it adjusted on?
-computed on average daily gain from birth to weaning
-calf age
-calf sex
-dam age