Animal Production Factors Flashcards
Which are the 7 animal production factors that affect meat composition and quality?
animal breed and genetics, plane of nutrition, dietary ingredients, taints, sex, slaughter weight, growth control
What is the feed conversion efficiency?
the kg of feed needed to produce x kgs of liveweight, so the lower the better
What does high or low plane of nutrition mean?
it is how energy dense a diet is, so one diet will be very energy dense and the other one will not be
A high plane of nutrition followed by a low plane of nutrition results in more___in the carcass
muscle
A low plane of nutrition followed by a high plane of nutrition results in more___in the carcass
fat
What is the difference between ad libitum and restricted diets?
the first one is all you can eat, the second one is limited
What is the effect of feeding tallow or soya oil on the fatty acid quality of pork?
tallow is saturated and results in more SFA and MUFAs, while soya oil is more unsaturated so it results in more PUFAs
How do ruminants and non-ruminants differ in the way they metabolise dietary fatty acids?
ruminants have the hydrogenation in the rumen, so the FA change, while in non ruminants there is a more direct absorption
What is rumen biohydrogenation?
The transformation of unsaturated FA to more saturated versions due to microorganisms in the rumen
In ruminants, which diet results in higher omega 3 meat content?
grass
Which fatty acid is produced in the rumen and has anticarcinogenic and body fat regulator properties?
CLA
What is the disadvantage of adding soya oil to the diet of pigs when it comes to meat quality?
it increases meat lipid oxidation
What can be done to counteract the high lipid oxidation in pork from pigs fed with soya oil?
introduce vit e
What is the effect of dietary carotenoids on meat colour?
it makes fat yellowy
