Nutrition and Feeds Feed Preparation

Is it profitable to grind, crush, or soak feed? n When animals fail to chew the grain thoroughly some of the nutritive value of the feed is lost because of the reduction of surface area.

Fineness of Grain - Why? n It should be ground to medium fine. n For swine, it should be ground more finely (Aver. particle size of microns) n Extremely fine grinding takes more power, time, and the process can make grains less palatable. n Wheat and barley which is ground too fine could be wasted (lost as dust) and/or cause digestive problems.

Rolling vs. Grinding Grain n For monogastrics, rolling grain results in a more uniform particle size which improves digestibility. n Rolling grain is more energy efficient than using a hammer mill or grinder.

Advantage of Pellets n Less waste n Less space needed for storage n Animals may eat more feed in pellet form

Chopped or Ground Hay n Advisable only if it encourages animals to eat coarse, stemmy portions that might otherwise be left.

100% Concentrate n Not advisable because of digestive troubles in animals, especially ruminants

Cooked Feed n Advantageous when feeding potatoes, field beans, and soybeans. These feedstuffs must be cooked to remove factors which cause poor performance in swine. n Cooking does not increase the digestibility or feeding value of other feeds.

Soaking Feeds n Advantageous when grain with small or hard kernels cannot be ground or crushed n If soaked too long, fermentation may take place or mold will grow which produce toxins.

Fermenting of Feeds n Experiments show these methods of feed preparation do not cause any saving in feed or result in greater production.