ANSC 2120 Lecture Notes - Lecture 26: Basal Metabolic Rate, Logarithmic Scale
29 Feb 2016
School
Department
Course
Professor
Document Summary
Dairy cow 26% for maintenance, and 74% for milk) than its more efficient with its energy milk. Very efficient: levels of efficiency can also be affected by the feed (cid:1) (cid:1) (cid:1) (cid:1) soybean/corn meal vs. forage. Maintenance energy components: basal metabolism minimal metabolic rate. Defines as metabolic rate (=heat production) in the postabsorptive state, minimal physical activity and psychic stress, and thermal neutrality. Factors affecting basal metabolic rate: body size. Clearly the bigger an animal, the more heat it produces. However, the relation between heat production (metabolic rate) and body weight in curvilinear because weight-specific metabolic rate (kcal/kg per day) decline with increasing mature body size. Therefore if the graph in the lecture notes is plotted on a logarithmic scale, the relation becomes linear. Log h = 1. 84 + 0. 75 logw, so that h = 69. The term w^0. 75 is called metabolic body weight.
