ANSI 3653 Lecture Notes - Lecture 1: Nutrient Density, Dry Matter
Document Summary
They do not have requirements for specific feeds/feedstuffs. Nutrient: any food component that aids in the support of life: water, carbohydrates, proteins, lipids, minerals, vitamins. Feeds/feedstuffs: any material included in a diet or ration because of nutrient composition and/or nutritional properties: forages, roughages, cereal grains, by-product feeds, protein feeds, mineral supplements, vitamin supplements, feed additives. Ration or diet: a 24-hour allowance of feed or a mixture of feed ingredients. Balanced ration or balanced diet: ration or diet is nutritionally adequate to meet animal"s nutrient requirements for a specific purpose. Roughage: any feed ingredient with more than 20% crude fiber(cf), contains relatively low levels of nutrient density, typically is low in dry matter (dm) digestibility. Concentrate: any feed ingredient with less than 20% cf and relatively high levels of nutrient density. The consumption of feedstuffs by livestock is required to supply nutrients and potential energy to support life. Maintenance: condition in which an animal is neither gaining or losing body weight.
