Excerpt from Diseases of Domesticated Birds
The writing of this book has been prompted by a conviction held by the authors, regarding the magnitude of the losses experienced by poultry producers as a result of preventable infectious diseases and parasitic infestations.
It is believed that the importance of these losses warrants the effort expended in presenting the essential facts concerning poultry diseases to meet the needs of veterinary practitioners, veterinary students and poultrymen.
The title of the book indicates a slight broadening of scope beyond the field of a work on diseases of poultry. Material included deals with the ostrich, cage birds and wild birds in semi-domestication in zoological gardens. Chapters dealing with anatomy of birds, and killing of poultry have been included.
The peculiarities of diseases of birds are indicated by the emphasis laid on certain features of the subject matter. In general, skill in diagnosing diseases of birds by observing symptoms is of less importance than ability to recognize the identity of disease at autopsy. Symptoms are slightly characteristic, but autopsy material is freely available. Consequently more facts concerning details of gross lesions are given than those relating to symptoms. In many cases, particularly in the septicemias, symptoms and lesions are not distinctive, and fine distinctions of etiology must be made by a bacteriologist. On this account considerable material useful to a bacteriologist alone has been included.
Available sources of information are indicated in the references appended to each chapter and by specific references to authors in the text. Special acknowledgment is made for assistance obtained from Neumann"s "Parasites et Maladies Parasitaires des Oiseaux Domestiques" in the preparation of the chapters on parasites. Much material concerning the less common parasites has been drawn from this book and Neumann"s zoological nomenclature has been largely followed.
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