ANSC 303 1st Edition Lecture 1Outline of Last Lecture Outline of Current Lecture I. What is Animal Nutrition?II. Efficiency of Animal NutritionIII. Importance of Animal NutritionIV. Animal Nutrition is Global V. Definitions VI. NutrientsVII. Physiological Functions Require NutrientsCurrent LectureI. What is Animal Nutrition?A. Efficient conversion of feedstuff by animals into high quality food for human consumptiona. Meatb. Milkc. Eggsd. WoolB. How much feed per day is required for you to gain one pound?a. It is never 1 lb of feed per 1 lb of gain b. How many lbs of feed causes you to gain 1 lb?C. Optimal use of feedstuffs for maximum performance D. Average daily gain: in xxx amount of days, how many pounds did you gain?E. Utilize by-products from human industriesII. Efficiency of Nutrient Conversion is LowA. Most energy fed to an animal goes into keeping the animal aliveIII. Importance of Animal NutritionA. Feed is around 50% of the cost of an animala. Performance animals have different average daily gains than maintenance animals These notes represent a detailed interpretation of the professor’s lecture. GradeBuddy is best used as a supplement to your own notes, not as a substitute.b. Feed efficiency is calculated through feed to gain ratioc. Profit i. The more it costs to feed an animal, the less profitii. Feeding animals is a large chunk of the cost of the animalB. Overfeeding is wasteful a. More unnecessary wasteb. More environmental contaminationC. Underfeeding decreases performanceD. Things that impact over/underfeeding:a. Proper analysis of feedstuffs and dietsb. Estimate the animals nutrient requirements i. The requirements can change dependent on the growing stage of the animalIV. Animal Nutrition is GlobalA. Consumers can change B. An increase in economic power (better job) leads to a taste for higher quality foodC. We will always export to China because of their large populationa. If they ban x, we can't feed xD. We are increasing our exports of meat and milk to developing countriesE. Costs of feedstuffs increase as cost of their components increaseV. DefinitionsA. Nutrient: chemical element of compound in diet that supports life processesB. Diet: mixture of feedstuff used to supply nutrientsC. Ration: daily supply of feed a. 20 lbs of feed/head/day = 20 lb/hd/db. Always need to determine the nutrient content of all feedstuffs firstD. Total Mixed Ration (TMR): what an animal needs to meet its nutrient requirementsVI. NutrientsA. WaterB. Dry Mattera. Organici. Protein1. True2. Non-nitrogen proteinii. Vitaminiii. Lipidiv. Carbohydratesb. Inorganici. Ashii. MineralVII. Physiological Functions Require NutrientsA. Every animal has a maintenance requirementsa. Companion animalsb. One of the most important requirements B. GrowthC. WorkD. Reproductiona. Gestationb. LactationE. Fiber
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