I. Introduction to Nutrition Flashcards
Review for quiz
What is Acid Detergent Fiber (ADF)?
ADF measures cellulose and lignin (indigestible plant fiber) in feed, indicating digestibility.
What does Ash represent in feed analysis?
Ash measures the total mineral content in feed.
How is Crude Fiber (CF) significant?
Crude Fiber measures the indigestible parts of plant material (like cellulose and hemicellulose), which is crucial for understanding the feed’s impact on digestion and health, especially for ruminants.
What does Crude Protein (CP) measure?
CP estimates protein content by multiplying nitrogen by 6.25
What is Dry Matter (DM) in feed?
DM indicates the water content in feed; higher DM means less moisture.
Define Feed.
Feed refers to any edible material that provides nutrients to animals.
What does Ether Extract (EE) estimate?
EE represents the fat content (lipid portion) in the feed.
What is Neutral Detergent Fiber (NDF)?
NDF measures cellulose, hemicellulose, and lignin, showing total fiber content.
What is Nitrogen-Free Extract (NFE)?
NFE estimates soluble carbohydrates in feed, calculated by subtracting other components from 100%.
What is Proximate Analysis?
its a method to estimate nutrient content by dividing feed into basic components: Dry Matter (DM), Crude Protein (CP), Ether Extract (EE), Ash, and Crude Fiber (CF). These represent the major nutritional aspects of feed.
Why is nutrition important in livestock?
Proper nutrition supports animal health, productivity, economic efficiency, and environmental sustainability.
What are the six major classes of nutrients?
Water, carbohydrates, proteins, fats, vitamins, and minerals.
How is crude protein (CP) determined?
CP is determined by measuring nitrogen content and multiplying by 6.25.
What does ether extract (EE) represent?
EE represents the fat content in the feed.
What happens to moisture content as dry matter (DM) increases?
As DM increases, moisture content decreases.
Which component is a calculated value in proximate analysis?
Nitrogen-Free Extract (NFE) is a calculated value, not directly measured.
What does ash measure in feed?
Ash measures the mineral content of feed.
Calculate crude protein if nitrogen content is 7.0 g.
Crude protein = 7.0 g × 6.25 = 43.75 g.
Which component is not part of Neutral Detergent Fiber (NDF)?
Hemicellulose (part of plant fiber) is included in NDF, while lignin is more closely associated with ADF.
Why is proper nutrition critical for livestock?
Proper nutrition improves health, production, and resource efficiency, and ensures safe food for humans.
