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The Influence Of Age Of Bull Age Of Cow Age Of Semen Dilution Rate Season Of The Year Stage Of Oestrus And Other Factors Upon The Conception Rate Obtained In The Artificial Insemination Of Dairy Cows And Heiffers
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Book Synopsis The Influence of Age of Bull, Age of Cow, Age of Semen, Dilution Rate, Season of the Year, Stage of Oestrus, and Other Factors Upon the Conception Rate Obtained in the Artificial Insemination of Dairy Cows and Heiffers by : Thomas D. Burgess
Download or read book The Influence of Age of Bull, Age of Cow, Age of Semen, Dilution Rate, Season of the Year, Stage of Oestrus, and Other Factors Upon the Conception Rate Obtained in the Artificial Insemination of Dairy Cows and Heiffers written by Thomas D. Burgess and published by . This book was released on 1952 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Factors Affecting Calf Crop by : Michael J. Fields
Download or read book Factors Affecting Calf Crop written by Michael J. Fields and published by CRC Press. This book was released on 2021-11-18 with total page 414 pages. Available in PDF, EPUB and Kindle. Book excerpt: Factors Affecting Calf Crop summarizes the latest information available from leading cattle physiologists and geneticists regarding factors known to influence the production of live calves at weaning. You get practical information on management techniques for improving reproduction efficiency in the herd. You'll also learn about the functioning of the reproductive system and how this may affect reproductive processes in the cow herd. Managers will benefit from a clearer understanding of the factors known to limit efficient reproduction, while veterinarians and other professionals who advise cattlemen will appreciate the substantial reference material and color photographs for defining cow condition scores. Color photographs are also used to illustrate the discussions of testicular thermographies and their applications. Other chapters in the book cover developments in improving reproductive performance of the replacement heifer, the brood cow, and the bull. Topics on reproduction include physiology/endocrinology, the use of growth promotants, genetics and physiological and economic considerations in selecting the age to breed heifers, heritability of fertility, length of the breeding season, prepartum and postpartum nutrition, nursing by the calf, cloning of embryos, and much more.
Book Synopsis Reproduction in Cattle by : Peter J. H. Ball
Download or read book Reproduction in Cattle written by Peter J. H. Ball and published by John Wiley & Sons. This book was released on 2008-04-15 with total page 248 pages. Available in PDF, EPUB and Kindle. Book excerpt: Cattle play a fundamental role in animal agriculture throughout the world. They not only provide us with a vital food source, but they also provide us with fertilizer and fuel. Keeping reproduction levels at an optimum level is therefore essential, but this is often a complicated process, especially with modern, high yielding cows. Written in a practical and user-friendly style, this book aims to help the reader understand cattle reproduction by explaining the underlying physiology of the reproductive process and the role and importance of pharmacology and technology, and showing how management techniques can improve reproductive efficiency. This edition includes: Recent research findings on the physiology of the oestrous cycle and its control; New techniques for monitoring and manipulating reproduction, including pregnancy diagnosis and embryo transfer; Advice on identifying common infertility problems and how to prevent and treat them. Reproduction Cattle 3e is essential reading for veterinary and agricultural students, as well as veterinarians and farmers involved in cattle reproduction.
Book Synopsis Influence of Age of Dairy Cattle and Season of the Year on the Sex Ratio of Calves and Services Required for Conception by : Ray Franklin Morgan
Download or read book Influence of Age of Dairy Cattle and Season of the Year on the Sex Ratio of Calves and Services Required for Conception written by Ray Franklin Morgan and published by . This book was released on 1938 with total page 32 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Embryonic Mortality in Farm Animals by : J.M. Sreenan
Download or read book Embryonic Mortality in Farm Animals written by J.M. Sreenan and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 294 pages. Available in PDF, EPUB and Kindle. Book excerpt: Reproductive wastage is a major inefficiency in all livestock production with embryonic mortality accounting for a major portion of this loss. Accordingly the Commission of the European Communities encouraged the organisation of a seminar on embryonic mortality in farm animals which was held in Brussels on the 11th and 12th of December 1984. This book contains the text of the papers, discussions and final summary presented at that Seminar. As a background to the Seminar, the extent and timing of embryonic loss was described for farm animals. Particular consideration was then given to the various mechanisms and signals, both embryonic and uterine in origin, that are so far known to be involved in the establishment of pregnancy. Possible causes of embryonic death including physiological, endocrinological, genetic and immunological components were outlined and discussed. The final summary contains general conclusions from the Seminar and recommendations for future research work on this topic. J.M. Sreenan M.G. Diskin July 1985. ******************** THE EXTENT AND TIMING OF EMBRYONIC MORTALITY IN THE COW J. M. Sreenan & M. G. Diskin, The Agricultural Institute, Belclare, Tuam, Galway, Ireland ABSTRACT The extent and timing of embryonic mortality in heifers, normal cows and repeat breeder cows has been reviewed.
Download or read book Canadian Theses written by and published by . This book was released on 1952 with total page 532 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Artificial Insemination in Farm Animals by : Milad Manafi
Download or read book Artificial Insemination in Farm Animals written by Milad Manafi and published by . This book was released on 2011 with total page 314 pages. Available in PDF, EPUB and Kindle. Book excerpt: Artificial insemination is used instead of natural mating for reproduction purposes and its chief priority is that the desirable characteristics of a bull or other male livestock animal can be passed on more quickly and to more progeny than if that animal is mated with females in a natural fashion. This book contains under one cover 16 chapters of concise, up-to-date information on artificial insemination in buffalos, ewes, pigs, swine, sheep, goats, pigs and dogs. Cryopreservation effect on sperm quality and fertility, new method and diagnostic test in semen analysis, management factors affecting fertility after cervical insemination, factors of non-infectious nature affecting the fertility, fatty acids effects on reproductive performance of ruminants, particularities of bovine artificial insemination, sperm preparation techniques and reproductive endocrinology diseases are described. This book will explain the advantages and disadvantages of using AI, the various methodologies used in different species, and how AI can be used to improve reproductive efficiency in farm animals.
Book Synopsis Ruminant Nutrition by : Robert Jarrige
Download or read book Ruminant Nutrition written by Robert Jarrige and published by John Libbey Eurotext. This book was released on 1989 with total page 400 pages. Available in PDF, EPUB and Kindle. Book excerpt: Deals with feed evaluation systems, the nutrient requirements of ruminant livestock and the feeding value of a wide range of feedstuffs. This book lists about 800 typical forages, 65 crop residues and 120 concentrate and by-product feeds. It is suitable for teachers, specialist scientists and industrialists.
Book Synopsis The Influence of Age on Breeding Efficiency of Dairy Cattle in Artificial Insemination by : Tsuneo Tanabe
Download or read book The Influence of Age on Breeding Efficiency of Dairy Cattle in Artificial Insemination written by Tsuneo Tanabe and published by . This book was released on 1945 with total page 92 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis The Effect of Follicle Age on Fertility in Beef Cattle by : Fernanda Martins de Abreu
Download or read book The Effect of Follicle Age on Fertility in Beef Cattle written by Fernanda Martins de Abreu and published by . This book was released on 2011 with total page 88 pages. Available in PDF, EPUB and Kindle. Book excerpt: Abstract: To increase the adoption of artificial insemination (AI) in cattle, timed-AI (TAI) programs in which AI is performed without the necessity of estrous detection, were developed. With the ability to manipulate the estrous cycle and follicular development concurrent with the enhancement of these approaches, much has been learned about the factors during follicular development that affect fertility. In some approaches, it has been clearly demonstrated that the diameter of the ovulatory follicle has a major effect on fertility. Others have shown that fertility is influenced by the length of proestrus. More recent data suggests that age of the ovulatory follicle may also impact fertility; however this has not been investigated in beef cattle. In the first experiment, age of ovulatory follicle and its effect on conception rate were investigated in beef heifers in Montana (MT) and Ohio (OH). The animal model used created a difference in follicle age of approximately 3 d between treatments ("young" follicle, YF; and "mature" follicle, MF). Ultrasonography was performed to assess follicular characteristics and development, and for pregnancy status. AI was performed approximately 12 h after onset of estrus. Interval to estrus was greater and follicle diameter at AI was smaller in the YF than in the MF treatment, however no difference was detected in conception rates. In the second experiment, the effect of ovulatory follicle age on pregnancy rate was investigated in beef cows in MT. Follicle age differed by approximately 3 d at the time of AI between treatments (YF and MF). Ultrasonography was performed throughout the experiment for follicular characteristics and pregnancy diagnosis. Estrous detection was performed for 3 d and 4 d in the MF and YF, respectively, followed by AI approximately 12 h later. Cows not detected in estrus during this period, received an injection of GnRH and TAI either at 72 h (MF) or 96 h (YF) after prostaglandin (PGF) administration. Follicle diameter at AI did not differ between treatments; however interval to estrus was greater in the YF than in the MF. Pregnancy rates were similar between treatments. Across treatments, pregnancy rate was greater in cows that were AI after estrus, than cows that received TAI. In conclusion, manipulation of ovulatory follicle age in beef cattle resulted in a longer interval to estrus (heifers and cows), and smaller follicle diameter at AI (heifers) in animals treated in a manner to result in ovulation of younger follicles, but age of the follicle at AI did not influence pregnancy rate. This data suggest that age of the ovulatory follicle is not a major contributor to variation in fertility in beef cattle.
Book Synopsis The Buffalo (Bubalus bubalis) - Production and Research by : Giorgio A. Presicce
Download or read book The Buffalo (Bubalus bubalis) - Production and Research written by Giorgio A. Presicce and published by Bentham Science Publishers. This book was released on 2017-03-31 with total page 501 pages. Available in PDF, EPUB and Kindle. Book excerpt: This handbook aims at focusing on the husbandry of the common water buffalo, (Bubalis bubalis). The book covers a broad range of topics such as the buffalo’s genetic evolution, cytogenetics, subspecies, breed diversification, feeding and metabolic specificity, adaptable response to environmental stress factors, welfare, dairy requirements and production, reproduction and embryo technologies, cryopreservation, sperm cell sexing, somatic cell cloning and transgenesis. Chapters presented and reviewed in this book have been by contributed by renowned scientists that have devoted years of research to the understanding of this species, and highlight the most recent advances in basic and applied science to unveil the understanding of physiological facets intrinsic to this animal species. The depth of the selected topics makes this book especially suited for readers of all academic levels of study. Researchers, students and professionals will find this book a useful guide to breeding and farming the water buffalo.
Book Synopsis Smallholder Dairying in the Tropics by : Lindsay Falvey
Download or read book Smallholder Dairying in the Tropics written by Lindsay Falvey and published by ILRI (aka ILCA and ILRAD). This book was released on 1999-01-01 with total page 466 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Guidelines for Uniform Beef Improvement Programs by : Dixon D. Hubbard
Download or read book Guidelines for Uniform Beef Improvement Programs written by Dixon D. Hubbard and published by . This book was released on 1981 with total page 84 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Neurobiology of Chemical Communication by : Carla Mucignat-Caretta
Download or read book Neurobiology of Chemical Communication written by Carla Mucignat-Caretta and published by CRC Press. This book was released on 2014-02-14 with total page 614 pages. Available in PDF, EPUB and Kindle. Book excerpt: Intraspecific communication involves the activation of chemoreceptors and subsequent activation of different central areas that coordinate the responses of the entire organism—ranging from behavioral modification to modulation of hormones release. Animals emit intraspecific chemical signals, often referred to as pheromones, to advertise their presence to members of the same species and to regulate interactions aimed at establishing and regulating social and reproductive bonds. In the last two decades, scientists have developed a greater understanding of the neural processing of these chemical signals. Neurobiology of Chemical Communication explores the role of the chemical senses in mediating intraspecific communication. Providing an up-to-date outline of the most recent advances in the field, it presents data from laboratory and wild species, ranging from invertebrates to vertebrates, from insects to humans. The book examines the structure, anatomy, electrophysiology, and molecular biology of pheromones. It discusses how chemical signals work on different mammalian and non-mammalian species and includes chapters on insects, Drosophila, honey bees, amphibians, mice, tigers, and cattle. It also explores the controversial topic of human pheromones. An essential reference for students and researchers in the field of pheromones, this is also an ideal resource for those working on behavioral phenotyping of animal models and persons interested in the biology/ecology of wild and domestic species.
Book Synopsis Manual of Equine Reproduction - E-Book by : Steven P. Brinsko
Download or read book Manual of Equine Reproduction - E-Book written by Steven P. Brinsko and published by Elsevier Health Sciences. This book was released on 2010-05-19 with total page 336 pages. Available in PDF, EPUB and Kindle. Book excerpt: Now in full color, Manual of Equine Reproduction, 3rd Edition provides a comprehensive look at the reproductive management of horses, including management of stallions, pregnant mares, and neonatal foals. Expert authors use a concise, practical approach in discussing improved therapies and treatments in equine breeding. You’ll enhance your skills and knowledge with this book’s detailed coverage of techniques used in reproductive examination, breeding procedures, pregnancy diagnosis, foaling, and reproductive tract surgery. A clinical emphasis includes a step-by-step format of possible scenarios from conception to breeding management. Practical information includes topics such as breeding with transported cooled or frozen semen, and caring for the broodmare and newborn foal. The organization of material corresponds to the course of study in veterinary school, so you can find topics easily. Chapter objectives and study questions at the beginning of each chapter guide you through the material and provide clear learning goals. Evaluation of Breeding Records chapter covers the importance of breeding records, and how to use them to evaluate stallion performance and optimize fertility. References are listed at the end of each chapter for further research and study. Full-color photographs and illustrations clearly depict procedures, and all drawings have been redrawn and improved. NEW Assisted Reproductive Technology chapter goes beyond embryo transfer. Updated content includes the latest advances in therapies and treatments. New content is added to two chapters, Reproductive Physiology of the Nonpregnant Mare and Manipulation of Estrus in the Mare. Thorough coverage of every aspect of equine reproduction provides a strong foundation for success in veterinary practice, including a discussion of the use of GnRH-analog deslorelin (Ovuplant) to hasten ovulation; aseptic technique for endometrial biopsy; use of transabdominal ultrasonography, especially in early pregnancy; determination of fetal gender by transrectal ultrasonography; aspiration testicular biopsy using a spring-loaded biopsy instrument; and procedure for surgical embryo transfer.
Book Synopsis Conception Rate in Dairy Cattle by Artificial Insemination at Various Stages of Estrus by : George W. Trimberger
Download or read book Conception Rate in Dairy Cattle by Artificial Insemination at Various Stages of Estrus written by George W. Trimberger and published by . This book was released on 1943 with total page 28 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Reproductive Technologies in Farm Animals, 2nd Edition by : Ian Gordon
Download or read book Reproductive Technologies in Farm Animals, 2nd Edition written by Ian Gordon and published by CABI. This book was released on 2017-06-23 with total page 353 pages. Available in PDF, EPUB and Kindle. Book excerpt: Building on the successful structure of the first edition, the second edition of Reproductive Technologies in Farm Animals has been totally updated and revised to provide an up to date account of the key techniques employed in manipulating reproduction in farm animals, including beef and dairy cattle, pigs, sheep, goats, buffaloes, camelids, horses and poultry. A classic introductory text to the subject, the book is based on a comprehensive review of the current literature. This text remains key reading for students in animal science, agriculture, veterinary medicine and biology, and veterinary practitioners and farmers who wish to keep updated on developments in techniques that may be useful in their daily practice.
