Haresign / Cole / Henrichsmeyer Recent Advances in Animal Nutrition

1. Auflage 2013
ISBN: 978-1-4831-0026-5
Verlag: Elsevier Science & Techn.
Format: PDF
Kopierschutz: 1 - PDF Watermark

E-Book, Englisch, 200 Seiten, Web PDF

Recent Advances in Animal Nutrition-1981 is a collection of papers that discusses the effects of dietary fat on milk composition, relating it to the biochemistry of fat synthesis in the mammary gland. The influence of concentrates on milk composition as well as the pattern and level of concentrate feeding on milk output are also covered. The book describes the need for better utilization of grass and grass products in dairy production, the mineral and trace element requirements of pigs; the importance of anion-cation balance in poultry diets and its effects on performance levels; and the selenium and cobalt requirements of ruminants. The problems of medicinal residues in animal products and the toxicological effects of aflatoxin residues in animal products are also considered. People involved in agriculture, dairy production and animal nutrition will find the book useful.

Autoren/Hrsg.

Haresign, W.

Cole, D. J. A.

Henrichsmeyer, W.

Inhaltsverzeichnis

1;Front Cover;1
2;Recent Advances in Animal Nutrition–1981;4
3;Copyright Page;5
4;Table of Contents;8
5;PREFACE;6
6;Part I: Feeding Dairy Cows for Milk Quality;10
6.1;CHAPTER 1. THE EFFECT OF DIETARY FAT ON MILK COMPOSITION;12
6.1.1;Introduction;12
6.1.2;Biochemistry of milk fat synthesis;13
6.1.3;Digestion, absorption and metabolism of dietary lipids;14
6.1.4;Biochemistry of milk fat synthesis;13
6.1.5;Digestion, absorption and metabolism of dietary lipids;14
6.1.6;Effects of dietary lipids on aspects of metabolism related to milk fat synthesis;20
6.1.7;Dietary fat and milk secretion;23
6.1.8;Intake and efficiency of energy use;32
6.1.9;Practical considerations related to the development and use of lipid supplements in dairy rations;33
6.1.10;References;35
6.2;CHAPTER 2. CONCENTRATE FEEDING AND MILK COMPOSITION;44
6.2.1;Basic factors affecting milk secretion;44
6.2.2;Feeding and milk composition;51
6.2.3;Manipulation of milk production;53
6.2.4;Conclusions;55
6.2.5;References;56
6.3;CHAPTER 3. THE INFLUENCE OF LEVEL AND PATTERN OF CONCENTRATE INPUT ON MILK OUTPUT;58
6.3.1;Introduction;58
6.3.2;Theory of response;59
6.3.3;Modification of the innate capacity of the cow through changes in pattern of feed distribution;71
6.3.4;Summary and conclusions;76
6.3.5;References;76
6.4;CHAPTER 4. THE CONTRIBUTION OF GRASS AND CONSERVED FORAGES TO THE NUTRIENT REQUIREMENTS FOR MILK PRODUCTION;80
6.4.1;Introduction;80
6.4.2;Trends in dairy herd performance;80
6.4.3;Contribution to energy requirements;81
6.4.4;Contribution to protein requirements;85
6.4.5;Contribution to mineral requirements;85
6.4.6;The future contribution of grass and conserved forage;86
6.4.7;Conclusions;88
6.4.8;References;88
6.5;CHAPTER 5. FACTORS AFFECTING THE FEEDING VALUE OF SILAGE;90
6.5.1;Silage preservation;90
6.5.2;Silage digestibility;92
6.5.3;Fresh grass compared with silage;93
6.5.4;Dry matter content;94
6.5.5;References;97
7;Part II: Mineral and Trace Element Nutrition of Farm Livestock;100
7.1;CHAPTER 6. MINERAL AND TRACE ELEMENT REQUIREMENTS OF PIGS;102
7.1.1;Introduction;102
7.1.2;Calcium and phosphorus;103
7.1.3;Magnesium;109
7.1.4;Sodium and chlorine;110
7.1.5;Potassium;110
7.1.6;Iron;111
7.1.7;Zinc;112
7.1.8;Manganese;112
7.1.9;Copper;113
7.1.10;Cobalt;113
7.1.11;Iodine;113
7.1.12;Selenium;114
7.1.13;Fluorine;114
7.1.14;Summary;114
7.1.15;References;114
7.2;CHAPTER 7. RECENT ADVANCES IN DIETARY ANION-CATION BALANCE IN POULTRY;118
7.2.1;Introduction;118
7.2.2;Relationship between acid-base balance and mineral balance in practice;119
7.2.3;The practical importance of mineral balance in poultry;120
7.2.4;Limitations;127
7.2.5;References;128
7.3;CHAPTER 8. THE SELENIUM REQUIREMENTS OF RUMINANTS;130
7.3.1;Introduction;130
7.3.2;Deficiency conditions and symptoms;130
7.3.3;Dietary requirements for selenium;131
7.3.4;Selenium in animal feeds;133
7.3.5;Vitamin E content of feeds in relation to requirements;133
7.3.6;Risk situations;133
7.3.7;Prevention of selenium deficiency;134
7.3.8;Acknowledgements;137
7.4;CHAPTER 9. COBALT DEFICIENCY AND COBALT REQUIREMENTS OF RUMINANTS;138
7.4.1;Introduction;138
7.4.2;Clinical and covert pathological effects of Co deficiency;139
7.4.3;The utilization of dietary cobalt;139
7.4.4;Aspects of the biological role of cobalt in ruminants;143
7.4.5;Diagnostic indices of Co deficiency;145
7.4.6;Cobalt requirements;146
7.4.7;The aetiology of Co deficiency;147
7.4.8;References;149
8;Part III: Residues in Animal Products;152
8.1;CHAPTER 10. PROBLEMS OF MEDICINAL RESIDUES IN ANIMAL PRODUCTS;154
8.1.1;Introduction;154
8.1.2;Prophylactic and therapeutic use of medicinal additives;154
8.1.3;Product licence restrictions controlling the use of medicinal additives with special reference to withdrawal periods;155
8.1.4;Significance of antibiotic residues in meat, milk and other animal products;156
8.1.5;Methods of analysis of antibiotic residues in animal products;157
8.1.6;Discussion;159
8.1.7;References;160
8.2;CHAPTER 11. AFLATOXIN RESIDUES IN ANIMAL PRODUCTS;162
8.2.1;Introduction;162
8.2.2;Toxicological effects of the aflatoxins in animals;163
8.2.3;Possible toxicological effects of aflatoxin in humans;164
8.2.4;Occurrence of aflatoxin in feed commodities;165
8.2.5;Contamination of dairy products by aflatoxin M1;166
8.2.6;Other metabolites of the aflatoxins in foods of animal origin;168
8.2.7;UK legislation concerning aflatoxins;169
8.2.8;Decontamination of aflatoxin-contaminated oilseed cake;171
8.2.9;References;172
9;LIST OF PARTICIPANTS;174
10;INDEX;186