overview of nutrition for companion animals Flashcards
what are the storage forms of energy
- CHO - glycogen
- fats - triglycerides
- protein - no storage form, all functional tissue
what is the energy called that left and used by animal
metabolizable energy “calories”
what is RER
- resting energy requirement
- approx. of energy requirements needed for life
- reflects metabolically active tissues in body (lean tissue, organs, brain)
- even if overweight, animals still has RER b/c it’s lean body mass
what are the factors influencing energy requirements
- metabolic efficiency
- life stage
- environment
- lifestyle
how to calculate canine MER
maintenance energy requirement
MER = 1.2 to 1.5 (most are 1.2 - activity factors) X RER
RER = 70 X Wtkg^0.75
if overweight use estimate of optimal weight
how to calculate Feline MER
Formula 1: MER = 1.0 to 1.2 X RER
RER = 70 X Wtkg^0.75
Formula 2: MER = 50 x Wtkg
feline energy metabolism
cats are adapted to using protein for energy as opposed to carbohydrate
what are the 3 ways that nutrient content can be expressed
- as fed
- dry matter
- energy basis
what is as fed
how nutrient content is expressed on pet food labels and nutrients are given as a percent of the finished product by weight
what is dry matter basis
nutrients are given as a percent of the product by weight after the moisture content has been subtracted
what is energy basis
nutrients are expressed as units (grams, mg, IU) per 1000 kcals. protein, fat and CHO can be expressed as percent of total calories
what is the only meaningful way to compare the nutrient content of two foods
on an energy basis
what are the two ways to balance energy
- bulk limiting
- energy limiting
what is bulk limiting
animal gets full before eating all nutrients
what is energy limiting
- add energy to diet to make limiting
- animal might not eat as much food b/c extra energy is added
what is the moderate amount of protein for dogs
greater than or equal to 18%, less than 25%
what is the moderate amount of protein for cats
greater than or equal to 30%, less than 50%