Table of Contents

The Basis of Milk Production. 1. World Distribution (A. Horn). Total cattle numbers and influencing factors. Breed distribution, limitations and international movement. Milk sold. Role of milk production in the world's food economy. References. 2. Breeding of Dairy Cattle (H.O. Gravert). Origin and breeds of dairy cattle. Goals for selection; recording for these goals. Implications of modern breeding methods on dairy cattle. Breeding programmes. 3. Feeding of Dairy Cattle (J.B. Owen). Ruminant nutrition in relation to milk production. Nutrient specification for the dairy cow diet. Feeds commonly used for milk production. Feed preparation and control. Feed input in relation to milk output. Grazing dairy cattle. Milk as a Food. 4. Composition of Milk (W. Kaufmann, H. Hagemeister). General factors influencing the composition of milk. Proteins in milk. Non-protein nitrogen (NPN). Factors affecting yield and content of protein in milk. Composition of milk lipids. Lactose. Vitamins. Minerals. 5. Sanitary and Health Aspects of Milk (W.H. Heeschen). Keeping quality of milk. Factors affecting keeping quality. General code of hygienic practice for the production of high-quality milk. Health hazards. Statutory and marketing requirements. Milk Production Systems. 6. Rearing Calves and Heifers (J.H.B. Roy, T. Smith). Calf rearing. Rearing dairy heifers beyond calfhood. 7. Cattle Production Systems in Practice (H.A. Jasiorowski, A.J. Quick). Definition and criteria. Constraints. Basic systems. Herd management and labour organization. 8. Cattle Breeding in the Tropics (O. Syrstad). Importance of cattle in the tropics. Types and breeds of tropical cattle. Methods for genetic improvement. List of Contributors - Biographical Notes. Subject Index.