Development and Economic Comparison of Selection Criteria for Cows and Bulls with a Dairy Herd Simulation Model


Book Description

Selection criteria for cow culling. Application of replacement theory to cow culling. Development of an economic index. Selection criteria for choosing bulls. Thechnique used to study decision problems. Choice among milk traits to include in decision criteria. Dairy herd simulation model. Comparison of cow culling criteria with the dairy herd. Comparison of criteria for choosing bulls with the dairy herd simulation model.







Systems Theory Applied to Agriculture and the Food Chain


Book Description

Biological and physiological systems: animal sciences. Plant-animal interactions in northern temperate sown grasslands and semi-natural vegetation. Exploitation of the systems approach in technical design of agricultural enterprises. Application of systems theory to farm planning and control: modelling resource allocation. Optimising the mixture of enterprises in a farming system. Farming systems research-extension. Food policy and food security planning: institutional approaches to modelling grain markets and food security in Sub-Saharn Africa. A systems view of commercial supply and marketing links. Agroecosystems. Understanding and managing changes in agriculture. Agricultural sector modelling for policy development. Of agricultural systems and systems agriculture: systems methodologies in agricultural education. Extension education: Top(s) Down, Bottom(s) Up and Other Things.







Ruminant Nutrition


Book Description

Deals with feed evaluation systems, the nutrient requirements of ruminant livestock and the feeding value of a wide range of feedstuffs. This book lists about 800 typical forages, 65 crop residues and 120 concentrate and by-product feeds. It is suitable for teachers, specialist scientists and industrialists.




Special Report


Book Description