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Прибыльное разведение кур мясо-яичных пород |
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Категория: Орнитология. Птицы, Домашние питомцы |
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Автор: Колпакова Анастасия
Издательство: Владис, Рипол Классик
Год издания: 2011
isbn: 978-5-9567-1248-1, 978-5-386-02718-6
Количество страниц: 192
Язык: русский
Формат: DOC
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В этой книге доступным языком рассказывается о происхождении домашних кур, их биологических особенностях, наиболее распространенных болезнях, методах их лечения и профилактики. Вы познакомитесь с многообразием видов и пород домашних кур, получите практические рекомендации по разведению и содержанию кур мясного и яичного направлений продуктивности.
Куры — самые распространенные домашние птицы. Конкуренцию им составляют гуси, утки, индейки, цесарки, голуби. Однако им всё же далеко до популярности кур. Куриное мясо достаточно дешево и, как правило, подходит даже для питания людей с заболеваниями желудочно-кишечного тракта. Куриный бульон давно уже считается средством народной медицины, просто необходимым людям, перенесшим болезнь. Куриные яйца и блюда из них прочно вошли в наше меню. Недаром самым простым блюдом на скорую руку считается именно яичница. |
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Свиньи. Разведение. Содержание. Уход |
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Категория: Зоология позвоночных. Животные, Домашние питомцы |
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Автор: Горбунов В.В.
Издательство: ACT, ВКТ
Год издания: 2011
isbn: 978-5-17-073774-1
Количество страниц: 192
Язык: русский
Формат: DOC
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Книга станет полезной для начинающих и опытных свиноводов. Вы узнаете о различных породах свиней, особенностях их содержания и откорма, о том, как правильно обустроить свинарник, готовить и хранить корма, уберечь животных от болезней. Советы и рекомендации помогут вам в кратчайшие сроки получить качественное мясо и сало, правильно переработать и сохранить мясную продукцию.
Для широкого круга читателей. |
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The Sipuncula: Their Systematics, Biology, and Evolution |
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Категория: Биологические науки » Зоология беспозвоночных » Малакология. Моллюски |
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Автор: E. D. Cutler
Издательство: Cornell University
Год издания: 1994
isbn: 0801428432
Количество страниц: 465
Язык: english
Формат: PDF (scan)
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The Sipuncula, a group of ocean-dwelling worms related to annelids and mollusks, play a significant role in the bioerosion of coral reefs and are useful indicators of environmental conditions. The 155 species live in a wide variety ofmarine habitats at all depths, in sand and mud, in burrows in soft rock and dead coral, and inside such protective shelters as mollusk shells. Important food items for fish and invertebrate predators, they also recycle organic wastes and function as bioassay tools for human diseases such as cystic fibrosis and acute cholera. Edward B. Cutler brings together in this volume everything that is known about the entire phylum.An introduction, with practical information about collecting and handling the animals, is followed by Part One, which incorporates new systematic analyses made during the past twenty years and offers illustrated keys to all taxa, replacing the work of A.C. Stephen and S.J. Edmonds. Part Two reviews the past thirty years' work in such areas as ecology, muscular sysetms, blood chemistry, respiration, reproduction, and excretion. Part Three provides a new synthetic perspective on the phylum's zoogeography and evolutionary relationships, both to other phyla and within the phylum. It utilizes information from the fossil record, paleo-oceanographic data, and comparative studies of immunology, physiology, embryology, and anatomy. |
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Methods and Principles of Systematic Zoology |
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Категория: Зоология беспозвоночных, Зоология позвоночных. Животные |
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Автор: Ernst Mayr, E. Gorton Linsley, Robert L. Ursinger
Издательство: McGraw-Hill
Год издания: 1953
Количество страниц: 328
Язык: english
Формат: PDF (scan)
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328 pages with illustrations. Besides the time passed since this book was written, it keeps all its interest for the student in Zoology. |
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Walker's Marsupials of the World (Walker's Mammals) |
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Категория: Биологические науки » Зоология позвоночных. Животные » Териология. Млекопитающие |
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Автор: Ronald M. Nowak, Christopher R. Dickman
Издательство: The Johns Hopkins University Press
Год издания: 2005
isbn: 0801882222, 0801882117
Количество страниц: 247
Язык: english
Формат: PDF (scan)
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Authoritative and engaging, this volume from the Walker's Mammals series focuses on marsupials, pouched animals whose unusual method of reproduction—between egg laying and placental birth—places them in a unique category among mammals. A comprehensive guide to the biology and distribution of marsupials, this book includes common and scientific names, size and physical traits, habitat and ecology, behavior and social interactions, reproduction, life span, and conservation. The text is coupled with illustrations from the collections of leading photographers and the world's greatest museums. An introduction by marsupial expert Christopher R. Dickman describes the evolution and current status of marsupials and reveals why they add so much intrigue to the natural world. |
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A Field Guide to Coral Reefs: Caribbean and Florida (Peterson Field Guides) |
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Категория: Биологические науки » Зоология позвоночных. Животные » Ихтиология. Рыбы |
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Автор: Eugene H. Kaplan, Roger Tory Peterson, Susan L. Kaplan
Издательство: Houghton Mifflin Harcourt
Год издания: 1999
isbn: 0618002111
Количество страниц: 279
Язык: english
Формат: PDF (scan)
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With more than 500 species described and more than 400 illustrations, this guide provides quick and easy visual identification of fishes, mollusks, sponges, shrimps, lobsters, crabs, and much more of the fauna found on the coral reefs of the Caribbean and Florida. |
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A Field Guide to Pacific Coast Fishes: North America (Peterson Field Guides) |
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Категория: Биологические науки » Зоология позвоночных. Животные » Ихтиология. Рыбы |
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Автор: Earl S. Herald, William N. Eschmeyer
Издательство: Houghton Mifflin Harcourt
Год издания: 1983
isbn: 061800212X
Количество страниц: 305
Язык: english
Формат: PDF (scan)
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More than 600 species are described in detail, with more than 525 illustrations. This is the guide for quick, reliable identification of fishes that you'll encounter while fishing, snorkeling, diving, or even strolling along a Pacific Coast beach. |
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Nature's I.Q. |
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Категория: Биологические науки |
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Автор: Balázs Hornyánszky, István Tasi
Издательство: Torchlight Publishing
Год издания: 2002
isbn: 9639353094
Количество страниц: 161
Язык: english
Формат: PDF (scan)
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Foreword: Ever since Darwin published The Origin of Species in 1859, the theory of evolution has been the center of many heated controversies. There is no doubt that leading scientific institutions—partly influenced by philosophical or ideological considerations, rather than strictly science—have always accepted and continue to accept the basic Darwinian concept, or one of its more up-to-date but essentially unchanged versions. However, a countercurrent that treated Darwinian ideas with criticism existed from the beginning. There have always been researchers who never accepted the Darwinian concept as proven. Nature’s I.Q. follows in this critical trend of pointing out the many weak points of the theory. Critiques of Darwinism—or more generally, of evolutionism—often focus on general principles. This somewhat decreases their persuasive power, since the uncovering of factual details is usually more convincing than mere generalities. This is all the more evident when we realize that the arguments for Darwinism, or evolutionism, are for the most part also general. One of the key questions of current discussions is the problem of the mechanism of evolution or, more precisely, of transformation (i.e., the transformation of different species into another). According to Darwinism and neo-Darwinism, this question is easy to handle. Proponents of these theories simply refer to two factors: mutation and selection. Mutation is the modification of the genetic material of a living thing. As a result, the living thing will produce issues that are hereditarily different from it. Selection in turn filters out the less fit for life from among these issues and, at the same time, helps multiply those more fit. The great improbability of organisms developing by mutation and selection can seriously shake one’s faith in this mechanism. Several scientists made mathematical calculations to prove that if the extremely differentiated living world had come into existence in such a way, it would have necessitated a tremendous number of mutations. For the production of all these mutations, even the estimated billions of years of the existence of the universe would not be enough. Nature’s I.Q. approaches the question in a similar way, but from a slightly different angle. Rather than presenting the often not-so-graphic considerations from the realm of the calculus of probabilities, it shows us the unlimited variety of the living world, including those highly improbable—we may confidently say, wonderful— phenomena that researchers encounter daily. Anyone reading this book will certainly contemplate whether it is probable, even possible, that these extremely complex phenomena are merely products of the primitive, arbitrary mechanism of mutation and selection. Besides its outstanding achievements in the field of principles, another merit of the book is its presentation of examples, allowing readers to improve their knowledge of numerous natural phenomena. And finally, a personal remark: by qualification I am a physicist, but apart from factual questions of this branch of learning, I have always been interested in the most general, philosophical questions of science. From among these, one of the most interesting and most crucial is the question of the variety of the living world, in other words, the question of biodiversity. When I began to explore this topic, I soon realized that “science” means something much less exact in this field than what I was accustomed to in physics. Statements that in physics would be accepted as at most provisional working hypotheses, in biology are accepted as theories, and even as proven facts. I am convinced that scientific theories that determine our whole worldview should not rest on such shaky foundations. Thus, I kindly recommend this book to all readers. Budapest, January 10, 2002 Dr. Ferenc Jeszenszky |
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Редкие и исчезающие животные. Земноводные и пресмыкающиеся |
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Категория: Батрахология. Земноводные, Герпетология. Пресмыкающиеся |
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Автор: И.С. Даревский, Н.Л. Орлов
Издательство: Высшая школа
Год издания: 1988
Количество страниц: 463
Язык: русский
Формат: DJVU
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В книге дана сводка современных сведений по биологии редких и исчезающих амфибий и рептилий. Особое внимание уделено описанию животных, включенных в Красные книги. Приведен список исчезнувших амфибий и рептилий. Обсуждается вопрос охраны, восстановления и увеличения численности животных, рассмотрены пути их рационального использования.
Для студентов биологических и географических специальностей университетов. |
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Handbook of Ecological Models used in Ecosystem and Environmental Management |
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Категория: Биологические науки » Экология. Окружающая среда |
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Автор: Jorgensen S.E.
Издательство: CRC Press
Год издания: 2011
isbn: 978-1-4398-1813-8
Количество страниц: 636
Язык: english
Формат: PDF
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It is estimated that roughly 1000 new ecological and environmental models join the ranks of the scientific literature each year. The international peer-reviewed literature reports some 20,000 new models spanning the period from 1970-2010. Just to keep abreast of the field it is necessary to design a handbook of models that doesn’t merely list them, but rather draws the state-of-the-art development of models for ecosystem and environmental management. |
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