Generally livestock feed pellets have 4 kinds: pure forage (grass) feed pellets, complete diet feed pellets, concentrated feed pellets and premix feed pellets.
Pure forage (grass) feed pellet may be a feed pellet that only makes from grass, hay, grain straw, stalk, alfalfa, etc. it's the easily making feed pellets for livestock farm.
Complete feed pellet consists of 4 parts: protein feed (such as organic , bean and its oil cake/meal, etc.), energy feed (such as corn, wheat bran, etc.), coarse feed (also referred to as roughage, consists of corn stalk, wheat straw, pasture, vinasse, etc.) and additives (like vitamins, microelements, salt, minaral feed, bone powder, etc.). By feeding livestock animals with complete feed pellets, you are doing not got to feed them other forage water. That’s why it's called “complete”.
Concentrated feed pellet consists of energy feed, protein feed, mineral feed and a few feed additives, and is especially suitable for feeding herbivores like cattle, sheep and rabbits. Concentrate feed pellet is to supplement herbivorous animals which are supported coarse feed, green fodder and silage, so it's also called concentrate supplement feed, or mixed concentrate feed. this type of feed has incomplete nutrition, so it's only some of animal feed to supplement the nutrition that livestock lacks by only eating forage grass or silage feed pellets.
Premix feed pellet, whose full name is feed additive premix, refers to the feed pellets that are mainly composed of feed additives. There are mainly 3 sorts of feed additives: nutritive additives (including trace elements, vitamins, amino acids), drug additives (mainly for preventing disease and promoting length), and general additives (such as various kinds, like mildew proof and incense enhancer, etc.). it's only produced by feed pellet manufacturing factories. (Want to make your own feed pellet factory? Click Sunwit Industry website!) Besides, premix feed pellet is merely added 1%-6% in livestock daily feed consistent with animal species and growth stage.