Artificial Insemination Service Efficiency And Reproductive Performance
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Artificial Insemination Service Efficiency And Reproductive Performance
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Author : Belayneh Engidawork
language : en
Publisher: LAP Lambert Academic Publishing
Release Date : 2013
Artificial Insemination Service Efficiency And Reproductive Performance written by Belayneh Engidawork and has been published by LAP Lambert Academic Publishing this book supported file pdf, txt, epub, kindle and other format this book has been release on 2013 with categories.
The study was carried out to evaluate efficiency of artificial insemination (AI) service and reproductive performance of crossbred dairy cows under smallholder farmers conditions in North Shewa zone, Oromia National Regional State, Ethiopia. The study involved retrospective evaluation of the efficiency of AI using 9 years recorded data of 576 cows from the district AI centers. A total of 240 households (120 AI beneficiary and 120 non-beneficiary households) were selected Purposively from 2 districts for the study, and interviewed using structured and semi-structured questionnaire to generate data on household characteristics, dairy cattle management and reproductive performance of dairy cows. Forty straws of frozen semen was sampled from both districts, thawed and evaluated at the district level for its quality following standard procedures. Generally, coverage of the AI service and the ongoing activities to improve and expand crossbred dairy cattle production at smallholder level in the area should be encouraged. Equally important, efforts should be geared to improve the different factors that have been reported to limit efficiency of AI and reproductive performance of dairy cows.
Effects Of Timing Of Artificial Insemination And Site Of Semen Deposition On Fertility In Lactating Dairy Cows And Gender Ratio Of Resulting Offspring
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Author : Melissa Wolf Macfarlane
language : en
Publisher:
Release Date : 2003
Effects Of Timing Of Artificial Insemination And Site Of Semen Deposition On Fertility In Lactating Dairy Cows And Gender Ratio Of Resulting Offspring written by Melissa Wolf Macfarlane and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2003 with Dairy cattle categories.
Genomically Enhanced Predictions Of Dairy Cattle Fertility
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Author : Emily Marie Sitko
language : en
Publisher:
Release Date : 2022
Genomically Enhanced Predictions Of Dairy Cattle Fertility written by Emily Marie Sitko and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2022 with categories.
Research presented in this thesis aimed at improving the efficiency of dairy farms through the development of targeted reproductive management strategies (TRM) based on genomically enhanced predictions of fertility, and the elucidation of associations between genetic merit for fertility and biological outcomes that affect dairy cow reproductive performance.Chapter II and III present the results of an experiment designed to compare the association between genetic merit for fertility and reproductive and profitability outcomes of cows submitted for artificial insemination (AI) with management programs that prioritized AI at detected estrus (AIE) or timed AI (TAI). Another objective was to determine if cows with different genetic potential for fertility would present a distinct response to the strategies compared. The study presented in Chapter IV and V characterized associations between genetic merit for fertility and biological parameters known to alter reproductive performance of cows. Results presented in Chapter II and III indicated that primiparous Holstein cows of superior genetic merit for fertility had better reproductive performance than cows of inferior genetic merit for fertility regardless of the type of reproductive management used. In addition, the effect of TRM based on genetic merit for fertility on reproductive performance depended on the outcome or sets of outcomes of interest evaluated. For example, cows of superior and intermediate genetic merit for fertility had greater P/AI when managed with the predominant TAI program but reduced days to pregnancy when managed with the program that prioritized AIE. Cows of inferior fertility also had greater first service P/AI with the program that prioritized TAI but had similar days to pregnancy with both management strategies. From an economic standpoint, cows of inferior fertility had greater cash flow than cows of superior fertility. For cows in specific fertility groups, the effects of the reproductive management strategies compared generated differences in cash flow of potential value for commercial dairy farms. The study presented in Chapter IV and V demonstrated a potential association of genomic merit for fertility with physiological and endocrine parameters known to affect reproductive performance of dairy cows. Particularly, cows of inferior genetic merit for fertility had poorer uterine health, decreased response to synchronization of estrus and ovulation, and were more likely to present altered ovarian and hormonal phenotypes that led to more frequent expression of atypical estrous cycles as compared with cows of superior genetic merit for fertility. Overall, we observed that genetically enhanced predictions of fertility might be a suitable tool for decision making in TRM. Additionally, the value of TRM programs for cows of different genetic merit for fertility might be on improving aspects of herd management such as simplifying program implementation or reducing reliance on hormonal interventions while maintaining acceptable levels of reproductive performance. An improved understanding of biological differences associated with genetic variation, such as our observations in Chapter IV and V, may be beneficial for the development of novel TRM and technologies to improve the reproductive efficiency of dairy cattle. This novel information could also support the development of new traits for selection of fertility.
Artificial Insemination In Farm Animals
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Author : Milad Manafi
language : en
Publisher: IntechOpen
Release Date : 2011-06-21
Artificial Insemination In Farm Animals written by Milad Manafi and has been published by IntechOpen this book supported file pdf, txt, epub, kindle and other format this book has been release on 2011-06-21 with Medical categories.
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.
Artificial Insemination In Farm Animals
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Author : Milad Manafi
language : en
Publisher:
Release Date : 2011
Artificial Insemination In Farm Animals written by Milad Manafi and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2011 with categories.
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.
Reproduction In Cattle
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Author : Peter J. H. Ball
language : en
Publisher: Wiley-Blackwell
Release Date : 2008-04-15
Reproduction In Cattle written by Peter J. H. Ball and has been published by Wiley-Blackwell this book supported file pdf, txt, epub, kindle and other format this book has been release on 2008-04-15 with Medical categories.
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.
Bovine Reproduction
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Author : Richard M. Hopper
language : en
Publisher: John Wiley & Sons
Release Date : 2014-08-18
Bovine Reproduction written by Richard M. Hopper and has been published by John Wiley & Sons this book supported file pdf, txt, epub, kindle and other format this book has been release on 2014-08-18 with Medical categories.
Bovine Reproduction is a comprehensive, current reference providing information on all aspects of reproduction in the bull and cow. Offering fundamental knowledge on evaluating and restoring fertility in the bovine patient, the book also places information in the context of herd health where appropriate for a truly global view of bovine theriogenology. Printed in full color throughout, the book includes 83 chapters and more than 550 images, making it the most exhaustive reference available on this topic. Each section covers anatomy and physiology, breeding management, and reproductive surgery, as well as obstetrics and pregnancy wastage in the cow. Bovine Reproduction is a welcome resource for bovine practitioners, theriogenologists, and animal scientists, as well as veterinary students and residents with an interest in the cow.
Proceedings From The Annual Conference On Artificial Insemination And Embryo Transfer In Beef Cattle
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Author :
language : en
Publisher:
Release Date : 1985
Proceedings From The Annual Conference On Artificial Insemination And Embryo Transfer In Beef Cattle written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1985 with categories.
Herd Health
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Author : O. M. Radostits
language : en
Publisher:
Release Date : 2001
Herd Health written by O. M. Radostits and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2001 with Animal health categories.
This text offers integrated coverage of all aspects of herd animals - dairy and beef cattle, calves, sheep, and swine. It provides strategies for herd health management and gives the basic knowledge for production-oriented animal health management.
Artificial Insemination In Farm Animals
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Author : Milad Manafi
language : en
Publisher: IntechOpen
Release Date : 2011-06-21
Artificial Insemination In Farm Animals written by Milad Manafi and has been published by IntechOpen this book supported file pdf, txt, epub, kindle and other format this book has been release on 2011-06-21 with Medical categories.
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.