TAILIEUCHUNG - Animal nutrition training manual

Understanding the early pathogenesis of foot-and-mouth disease (FMD) is of critical importance to ongoing and future efforts to decrease the impact of FMD in endemic regions and prevent incursions to disease-free territories. The importance of the early phase of virus- host interaction lies in two key facts: 1) it is the early events which determine if a susceptible host becomes infected and 2) successful abrogation of the early events is the logical goal of vaccines and biotherapeutic countermeasures. Ultimately, even population level trends and transboundary movement of FMD virus (FMDV) is dependent upon the virus-host interactions which occur in the. | Animal nutrition training manual Dr. Alimuddin Naseri National Animal Husbandry Advisor AKF Kabul - Afghanistan Mobile 93 0 79 211 047 Animal nutrition with emphasis on dairy cows. Submitted by Alimuddin Naseri Afghanistan Page 1 CHAPTER 1 COMPOSITION AND FUNCTION OF FEEDSTUFFS Introduction the Animal and its Food Food consists of water and Dry Matter DM . If the water content in food is 75 the DM content is 25 . Although water is very important the DM is crucial to the composition of a ration. More food is needed when it contains more water. The main components of a foods are Degradable True Proteins Undegradable Water N Compounds Non Proteins CP NPN Degradable Organic Undesirable Matter OM Substances Food Lipids EE N Free compounds Vit. A D E K Energy Sugars Carbohydrate Starches NFE Dry Matter Vit. B C Cellulose DM Major Elements Na Ca P CL K S Mg Inorganic Matter IOM Undesirable substances minerals ash Trace Elements I Mn F Co B Zn Fe Cu M Lignin CF Water Water is vital to any animal. The bodies of young animals may consist up to 80 of their live weight. Older and especially fat animals have less water in their bodies down to 50 . Feeds can contain both high and low water percentages. Examples of feeds with high water contents are young grass 15 DM and cabbage 10 DM . Hay and concentrates are feeds with low water contents 85-90 DM . An animal obtains water from three sources drinking water water present in food and metabolic water. The latter is formed during metabolism by oxidation of hydrogen H containing organic nutrients. Water leaves the body with urine faeces milk and as vapour via the lungs respiration and the skin perspiration . There is no evidence that under normal conditions an excess of drinking water is harmful. If water is offered ad lib animals normally drink what they require. Animal nutrition with emphasis on dairy cows. Submitted by Alimuddin Naseri Afghanistan .

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