ANSC 3170 Lecture Notes - Lecture 3: Fish Meal, Cystine, Lipoprotein

• School: University of Guelph
• Department: Animal Science
• Course: ANSC 3170
• Professor: Dominique Bureau

Document Summary

Fish feed 18-20% (low quality feed) to up to 70% (in high quality larval feed), with 30- Represent about 50% of the total cost of feed. Protein is not a nutrient, individual aa is the nutrient. Animal hydrolyze polymer into aa and absorb aa. Animal does not really metabolize protein, but aa. Aa main role is to synthesize protein (determining the weight gain of the animal) Aa are important fuels for fish and crustacean. Not a lot of storage cho in aquatic feed, mainly structural cho. In natural habitat, the animals do not eat a lot of digestible cho and lipids, most component that they can use it aa (such as insects, zooplankton) Fish are poikilothermic, so energy demand is smaller, they do not need to maintain the body temp. We burn a lot of organic molecules to generate heat and maintain body temp, we consume a lot of cho for heat production.