The Control of Fat and Lean Deposition is a collection of papers dealing with the methods of influencing fat and lean deposition in whole animals, such as the use of the immune response, the use of exogenously applied materials, transgenesis, or the diet itself. The papers also consider the results of fat manipulation and lean deposition on meat quality to achieve suitabilty for human consumption. Some papers review the hormonal regulation of muscle protein synthesis, degradation, and cell growth, noting that muscle protein turnover involves the regulation of cellular growth and metabolism of the whole body. Another paper investigates the surge in lipid accumulation during fattening, as well as the correlation between changes in flux or enzyme activities in growing animals to changes in lipid accretion. One paper examines the responsiveness of prenatal development of key tissues, such as skeletal tissue and adipose, to nongenetic influences. The paper also analyzes how such responsiveness influence the rate and composition of postnatal growth. Another paper discusses the observation that reducing fat content especially on the muscle tissue itself can adversely affect the eating quality and tenderness of meat. The collection is suitable for veterinarians, livestock growers, and researchers engaged in food processing and preservation.

In the years since the third edition of this indispensable reference was published, a great deal has been learned about the nutritional requirements of common laboratory species: rat, mouse, guinea pig, hamster, gerbil, and vole. The Fourth Revised Edition presents the current expert understanding of the lipid, carbohydrate, protein, mineral, vitamin, and other nutritional needs of these animals. The extensive use of tables provides easy access to a wealth of comprehensive data and resource information. The volume also provides an expanded background discussion of general dietary considerations. In addition to a more user-friendly organization, new features in this edition include: A significantly expanded section on dietary requirements for rats, reporting substantial new findings. A new section on nutrients that are not required but that may produce beneficial results. New information on growth and reproductive performance among the most commonly used strains of rats and mice and on several hamster species. An expanded discussion of diet formulation and preparationâ€"including sample diets of both purified and natural ingredients. New information on mineral deficiency and toxicity, including warning signs. This authoritative resource will be important to researchers, laboratory technicians, and manufacturers of laboratory animal feed.