Download or read book Long term Feeding of Dieldrin with a Calcium Stress to Japanese Quail Coturnix Coturnix Japonica written by Craig M. Reading and published by . This book was released on 1974 with total page 198 pages. Available in PDF, EPUB and Kindle. Book excerpt: Two experiments were conducted using coturnix quail to determine the effects of dieldrin and calcium on the reproductive performance of this species. In both experiments quail were raised on a soybean-meal glucose-monohydrate ration. At 25% egg production the quail received diets containing 0, 10 or 25 ppm of dieldrin in experiment I and 0, 5, 10 or 25 ppm of dieldrin in experiment II. Quail receiving each of these pesticide levels were further subdivided and fed diets containing 0. 5% and 3. 0% calcium. In experiment I data were collected and analyzed over six, 28- day production periods. The results show that specific gravity, egg production, fertility, hatchability, egg weight, body weight, incidence of cracked eggs and feed consumption were not affected by dieldrin treatment. However, specific gravity, incidence of cracked eggs, egg production, hatchability and female body weight were adversely affected by the lower calcium level. Male and female mortality was significantly higher with 25 ppm of dieldrin than controls. Livability of chicks fed 25 ppm dieldrin at both calcium levels and 10 ppm with 3. 0% calcium was lowered when compared to controls. In experiment II data was collected and analyzed over four, 28- day, production periods. Dieldrin was found not to decrease eggshell thickness when levels of 5, 10, or 25 ppm were present in the ration. Calcium at a level of 0.5% significantly reduced eggshell thickness. Egg production was not significantly reduced by dieldrin supplementation except during the first production period. Fertility, hatchability, egg weight, male and female body weight and feed consumption were also unaffected by dieldrin supplementation. The low calcium level (0.5%) was observed to significantly depress egg production and hatchability, but it did increase female body weight. Mortality of adult quail was greatly affected when levels of 10 and 25 ppm of dieldrin were present in the ration. Five ppm of dieldrin did not affect the mortality. Livability of chicks from hens receiving dieldrin rations of 10 and 25 ppm were significantly lower than chicks from hens receiving uncontaminated rations. Five ppm dieldrin did not affect the survival rate of chicks.
Download or read book O S U Theses and Dissertations 1970 1977 written by Oregon State University and published by . This book was released on 1980 with total page 138 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Residue Reviews R ckstandsberichte written by Francis A. Gunther and published by Springer. This book was released on 1971-04-06 with total page 169 pages. Available in PDF, EPUB and Kindle. Book excerpt: That residues of pesticide and other "foreign" chemicals in food stuffs are of concern to everyone everywhere is amply attested by the reception accorded previous volumes of "Residue Reviews" and by the gratifying enthusiasm, sincerity, and efforts shown by all the in dividuals from whom manuscripts have been solicited. Despite much propaganda to the contrary, there can never be any serious question that pest-control chemicals and food-additive chemicals are essential to adequate food production, manufacture, marketing, and storage, yet without continuing surveillance and intelligent control some of those that persist in our foodstuffs could at times conceivably endanger the public health. Ensuring safety-in-use of these many chemicals is a dynamic challenge, for established ones are continually being dis placed by newly developed ones more acceptable to food technologists, pharmacologists, taxicologists, and changing pest-control requirements in progressive food-producing economies. These matters are of genuine concern to increasing numbers of governmental agencies and legislative bodies around the world, for some of these chemicals have resulted in a few mishaps from improper use. Adequate safety-in-use evaluations of any of these chemicals per sisting into our foodstuffs are not simple matters, and they incorporate the considered judgments of many individuals highly trained in a variety of complex biological, chemical, food technological, medical, pharmacological, and toxicological disciplines.
Download or read book Agrindex written by and published by . This book was released on 1975 with total page 1064 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Selected References on Environmental Quality as it Relates to Health written by and published by . This book was released on 1976 with total page 684 pages. Available in PDF, EPUB and Kindle. Book excerpt: Monthly. Bibliography of MEDLARS-based journal articles that describe perturbations in the ecosystems important to health. For the most part, genetic and clinical literature not included. Index medicus format; author, subject sections.
Download or read book Bibliography of Agriculture written by and published by . This book was released on 1983 with total page 1314 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Ecological Effects of Pesticides on Non target Species written by David Pimentel and published by . This book was released on 1971 with total page 228 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Cumulated Index Medicus written by and published by . This book was released on 1982 with total page 1044 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Animal Biomarkers as Pollution Indicators written by David B. Peakall and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 312 pages. Available in PDF, EPUB and Kindle. Book excerpt: Ecotoxicology is a relatively new scientific discipline. Indeed, it might be argued that it is only during the last 5-10 years that it has come to merit being regarded as a true science, rather than a collection of procedures for protecting the environment through management and monitoring of pollutant discharges into the environment. The term 'ecotoxicology' was first coined in the late sixties by Prof. Truhaut, a toxicologist who had the vision to recognize the importance of investigating the fate and effects of chemicals in ecosystems. At that time, ecotoxicology was considered a sub-discipline of medical toxicology. Subsequently, several attempts have been made to portray ecotoxicology in a more realistic light. Notably, both F. Moriarty (1988) and F. Ramade (1987) emphasized in their books the broad basis of ecotoxicology, encompassing chemical and radiation effects on all components of ecosystems. In doing so, they and others have shifted concern from direct chemical toxicity to man, to the far more subtle effects that pollutant chemicals exert on natural biota. Such effects potentially threaten the existence of all life on Earth. Although I have identified the sixties as the era when ecotoxicology was first conceived as a coherent subject area, it is important to acknowledge that studies that would now be regarded as ecotoxicological are much older. Wherever people's ingenuity has led them to change the face of nature significantly, it has not escaped them that a number of biological con sequences, often unfavourable, ensue.
Download or read book Bibliography of Agriculture with Subject Index written by and published by . This book was released on 1983 with total page 1156 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Fish Oocyte written by Patrick J. Babin and published by Springer Science & Business Media. This book was released on 2007-08-17 with total page 513 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents a comprehensive overview on egg production in fish, from the standpoint of the oocyte. It covers oocyte development, maturation, hydration and fertilization. The book places special emphasis on using state-of-the-art tools for discerning the ultra-structure of the follicle and genomic/proteomic tools to fully understand biological basis of fish reproduction.
Download or read book Radioecological Techniques written by Vincent Schultz and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 303 pages. Available in PDF, EPUB and Kindle. Book excerpt: During the twenty years the authors have been associated with the field of radiation ecology, there has been a diversified and increasing use of radionuclides in applied and basic biological research. Prior to the advent of the atomic age in the 1940s the use of radionuclides as tracers was initiated, and following that period one observed a dramatically increased use in many disciplines. Concurrent with this increase there appeared many books and articles on radionuclide tech niques useful to biologists in general. Although only a few ecological applications were evident in these early years, ecologists were quick to see the opportunities available in their field. In the United States, major centers for such activities included Oak Ridge National Laboratory and the U. S. Atomic Energy Com mission's Savannah River Plant. At Oak Ridge National Laboratory Dr. Stanley I. Auerbach, director of ecological activities, encouraged with remarkable suc cess the use of tracers by his associates. Dr. Eugene P. Odum had the foresight to see that radionuclide tracers provided the means to solve many problems of interest to ecologists. Consequently, his research included some unique radio tracer applications at the Savannah River Plant. In addition he encouraged others involved in ecological activities at the Savannah River Plant to do likewise. Ecologists such as Dr. Robert C. Pendleton at the U. S. Atomic Energy Com mission's Hanford Works applied radionuclides in their research. To these early investigators and to those who followed we owe the oppportunity to write this book.
Download or read book Toxicology in the Use Misuse and Abuse of Food Drugs and Chemicals written by European Society of Toxicology. Meeting and published by Springer. This book was released on 1983-08 with total page 426 pages. Available in PDF, EPUB and Kindle. Book excerpt: Many chemotherapeutic agents introduced for use in humans are carcinogenic in laboratory animals (Conklin et al. 1965; Shimkin et al. 1966; Griswold et al. 1968; Harris 1976). However, initially their beneficial effect in disseminated cancer was of such short duration that the inevitable death of the patient from his primary disease precluded any clinical manifestation of the carcinogenic potential. During the last decade, chemotherapy has radically changed the outlook for many patients with cancer. Combinations of drugs, administered as the primary treatment, have resulted in high rates of cure in patients with disseminated malignancies, such as stage IV Hodgkin's disease or childhood acute lymphocytic leukemia. In other disseminated forms of neoplasia, induction of a remission, a substantial palliation and a prolongation of survival have been achieved. In many instances of localised disease, where surgery with or without radiotherapy are the primary form of treatment, anticancer drugs have been used with success as adjuvant therapy for distant microscopic disease. With these spectacular achievements, secondary malignancies, in particular acute non-lymphocytic leukemia (ANLL), has become of major concern. Incidence Acute leukemia is the most frequent form of secondary neoplasia in patients treated for cancer (Penn 1981). In one large series, 5. 9% of all ANLL could be attributed to previous chemotherapy (Kapadia et al. 1980).
Download or read book Poultry Meat Processing and Quality written by G Mead and published by Elsevier. This book was released on 2004-06-01 with total page 405 pages. Available in PDF, EPUB and Kindle. Book excerpt: Poultry products are universally popular and in recent years the consumption of poultry meat has risen dramatically. To ensure the continued growth and competitiveness of this industry, it is essential that poultry meat quality and safety are maintained during production and processing. This important collection provides an authoritative review of the key issues affecting poultry meat quality in production and processing.The book begins by establishing consumer requirements for meat quality, before examining the influence of breeding and husbandry, and techniques for stunning and slaughter of poultry. Chapters 5 and 6 look at primary and secondary processing and Chapters 7, 8 and 9 discuss packaging, refrigeration and other preservation techniques. There are also chapters on microbial hazards and chemical residues in poultry. Quality management issues are reviewed in the final group of chapters, including shelf-life and spoilage, measuring quality parameters and ways of maintaining safety and maximising quality.Poultry meat processing and quality is an essential reference book for technical managers in the Poultry Industry and anyone engaged in teaching or research on poultry meat production. - An essential reference for the entire poultry meat industry - Reviews the key issues affecting poultry meat quality in production and processing - Extensive analysis of poultry meat safety issues
Download or read book Wildlife Ecotoxicology written by John E. Elliott and published by Springer Science & Business Media. This book was released on 2011-08-27 with total page 476 pages. Available in PDF, EPUB and Kindle. Book excerpt: Many books have now been published in the broad field of environmental toxicology. However, to date, none of have presented the often fascinating stories of the wildlife science, and the steps along the way from discovery of problems caused by environmental pollutants to the regulatory and non-regulatory efforts to address the problems. This book provides case by case examinations of how toxic chemical effects on wildlife have brought about policy and regulatory decisions, and positive changes in environmental conditions. Wild animal stories, whether they are about the disappearance of charismatic top predators, or of grossly deformed embryos or frogs, provide powerful symbols that can and have captured the public's imagination and have resulted in increased awareness by decision makers. It is the intent of this book to present factual and balanced overviews and summaries of the science and the subsequent regulatory processes that followed to effect change (or not). We cover a variety of chemicals and topics beginning with an update of the classic California coastal DDT story of eggshell thinning and avian reproduction to more recent cases, such as the veterinarian pharmaceutical that has brought three species of Asian vultures to the brink of extinction. Researchers, regulators, educators, NGOs and the general public will find valuable insights into the processes and mechanisms involved both in environmental scientific investigation and in efforts to effect positive change.
Download or read book Essentials of Avian Medicine and Surgery written by Brian H. Coles and published by John Wiley & Sons. This book was released on 2008-04-15 with total page 392 pages. Available in PDF, EPUB and Kindle. Book excerpt: Essentials of Avian Medicine and Surgery is designed as a concise quick reference for the busy practitioner and animal nurse. Eminently practical, this classic avian text is prized for its down-to-earth approach. new contributions from world renowned experts in avian medicine new chapter on the special senses of birds, an understanding of which is crucial when giving advice on avian welfare problems fully up-to-date on the latest diagnostic and imaging techniques avian zoonotics are highlighted in infectious diseases section
Download or read book Toxicological Profile for Aldrin dieldrin written by and published by . This book was released on 2021 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
