Poultry production continues to make tremendous advances. This thoroughly revised fifth edition of Scanes’ seminal, comprehensive text presents students and professionals alike with valuable, research-based material relevant to all stages of a poultry career. Areas covered include global and commercial poultry production; poultry business organization; and production of meat chickens (broilers), turkeys, eggs, ducks, geese, game birds, and other poultry. Other chapters cover the fundamental science behind production: poultry biology, genetics, behavior, diseases/health, housing, ventilation, and processing. New or greatly expanded sections cover biosecurity; poultry stress/welfare; feed additives; food safety; incubation; controlling pests; poultry waste and environmental issues; brooding; and organic, free-range, and niche poultry production. “Points for Discussion” and “Deeper Dive” sections highlight key examples and provide further context and empirical data for critical areas in poultry production, giving students a first-hand look at issues in both small and large operations. The book concludes with an in-depth, invaluable chapter on applying for internships and positions for the start of a successful career.
Beach-spawning fishes from exotic locations on most continents of the world provide spectacular examples of extreme adaptations during the most vulnerable life cycle stages. The beauty, intriguing biology, and importance of these charismatic fishes at the interface of marine and terrestrial ecosystems have inspired numerous scientific studies. Adap
Postpartum depression is hard on a marriage. In their private practices, authors Karen Kleiman and Amy Wenzel often find themselves face-to-face with marriages that are suffocating, as if the depression has sucked the life out of a relationship that was only prepared for the anticipated joy of pending childbirth. What happens to marriage? Why do couples become angry, isolated, and disconnected? Tokens of Affection looks closely at marriages that have withstood the passing storm of depression and are now seeking, or in need of, direction back to their previous levels of functioning and connectedness. The reader is introduced to a model of collaboration that refers to 8 specific features, which guide postpartum couples back from depression. These features, framed as “Tokens,” are based on marital therapy literature and serve as a reminder that these are not just communication skill-building techniques; they are gift-giving gestures on behalf of their relationship. A reparative resource, Tokens of Affection helps couples find renewed harmony, a solid relational ground, and reconnection.
Among the Maya of Xculoc, an isolated farming village in the lowland forests of the Yucatan peninsula, children contribute to household production in considerable ways. Thus this village, the subject of anthropologist Karen Kramer's study, affords a remarkable opportunity for understanding the economics of childhood in a pre-modern agricultural setting. Drawing on a range of theoretical perspectives and extensive data gathered over many years, Kramer interprets the form, value, and consequences of children's labor in this maize-based culture. She looks directly at family size and birth spacing as they figure in the economics of families; and she considers the timing of children's economic contributions and their role in underwriting the cost of large families. Kramer's findings--in particular, that the children of Xculoc begin to produce more than they consume long before they marry and leave home--have a number of interesting implications for the study of family reproductive decisions and parent-offspring conflict, and for debates within anthropology over children's contributions in hunter/gatherer versus agricultural societies. With its theoretical breadth, and its detail on crop yields, reproductive histories, diet, work scheduling, and agricultural production, this book sets a new standard for measuring and interpreting child productivity in a subsistence farming community.
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