CPN Pet Food Evaluation & Labeling Flashcards
6 cards from real CPN practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 6 CPN Pet Food Evaluation & Labeling flashcards as text
Which analytical method evaluates pet food quality by measuring the proportion of a nutrient that is actually absorbed relative to the amount consumed?
Answer: Digestibility coefficient
The digestibility coefficient (apparent digestibility) is calculated as the difference between nutrient intake and fecal output divided by intake, indicating true nutrient availability from the food.
The Modified Atwater system uses specific conversion factors to calculate which nutritional parameter from proximate analysis data?
Answer: Metabolizable energy (ME) content
The Modified Atwater system uses factors of 3.5/3.5/8.5 kcal/g for protein/carbohydrate/fat respectively to estimate metabolizable energy in pet foods, accounting for incomplete digestibility.
Which analytical technique is used to determine the complete amino acid profile of a pet food ingredient, identifying individual amino acid concentrations?
Answer: HPLC or ion exchange amino acid profile analysis
High-performance liquid chromatography (HPLC) or ion exchange chromatography separates and quantifies individual amino acids, providing the specific profile beyond what crude protein measurement reveals.
What does evaluating pet food nutrients on an 'as-fed basis' mean?
Answer: Nutrients are reported in the food as it is actually fed, including its natural moisture content
As-fed basis reports nutrient concentrations in the food exactly as it would be presented to the animal, including its water content, which varies greatly between food types.
When evaluating whether to recommend a homemade diet, which professional is best qualified to formulate a nutritionally complete recipe for a pet?
Answer: A board-certified veterinary nutritionist (Dipl. ACVN or ECVCN)
Board-certified veterinary nutritionists (ACVN diplomates in the US) have specialized training in animal nutrition and use validated software to formulate complete and balanced homemade diets.
A clinical pet nutritionist reviewing a diet history finds the guaranteed analysis shows 28% crude protein on an as-fed basis with 10% moisture. What is the approximate dry matter protein percentage?
Answer: 31%
Dry matter protein = as-fed protein ÷ (1 − moisture fraction) = 28 ÷ 0.90 ≈ 31.1%, since 10% moisture means 90% dry matter.
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