DEALING WITH HAY SHORTAGES - …：处理干草短缺—….ppt

Hay Supplementation Considerations ? Horse = NON RUMINANT HERBIVORE 1. Gastrointestinal function 2. Behavior Hay supplementation considerations ? How much hay is needed? 1. Minimum of to 1% in dry matter or hay as fed? Not less than 50% of total diet? 2. Minimum of 24% NDF (13% Crude fiber) or 14% ADF? 3. Does form of hay make a difference? chopped, cubed, pelleted Relationship of NDF & Crude Fiber ? Legume hays NDF = (Crude fiber % - )/ ? Grass hays NDF = (Crude fiber % - )/ Know how much hay you are feeding ? Weigh hay to make sure it is not less than % of body weight. ? Limit time on round bales, . will generally be full 1 to 2 hours AM & PM. ? Commercial feeds higher than 14% crude fiber, hay can make up % BW. Hay – Roughage Substitutes ? Beet pulp ? Alfalfa cubes & pellets ? Soy hulls ? Haylage ? Cottonseed hulls ? Citrus pulp? ? Complete feeds ** Whatever is substituted make sure chew factor is present. Beet pulp ? DE approximately Mcal/lb, Crude protein 8-10%, NDF % ? Substitute up to 50% of hay. Alfalfa Cubes & Pellets ? Remember you are feeding alfalfa. ? Cubes and pellets are consumed rapidly, chew factor and stem length of concern. ? Choke concern with pellets. ? Cubes up to 50% for long stem hay. ? Pellets up to 25% for long stem hay. Soy hulls ? NDF 61%, -13 %, DE - Mcal/lb. ? Booth, et al. replace up to 50% of forage in diet. ? mendation probably no more than 25% as sorting will occur, chew factor concern as no long term studies have been reported. Cottonseed hulls ? DE .50 Mcal/lb, C. protein %, NDF 80%. ? Maximum of 20% of total diet. ? Mix with grain or can mix with chopped hay.