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Control of pig reproduction /
Control of Pig Reproduction focuses on carefully evaluated techniques and technologies involved in the control of pig reproduction. The selection first ponders on the sexual development of male pigs, including early fetal, perinatal, and pubertal periods. The text also discusses testicular steroids...
| Clasificación: | Libro Electrónico |
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| Otros Autores: | , |
| Formato: | Electrónico eBook |
| Idioma: | Inglés |
| Publicado: |
London :
Butterworths,
1982.
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| Temas: | |
| Acceso en línea: | Texto completo |
Tabla de Contenidos:
- Front Cover; Control of Pig Reproduction; Copyright Page; PREFACE; ACKNOWLEDGEMENTS; Table of Contents; PART I: THE MALE, MATING AND CONCEPTION; CHAPTER 1. MALE SEXUAL DEVELOPMENT; Early foetal period; Perinatal period; Pubertal period; Conclusions; References; CHAPTER 2. TESTICULAR STEROIDS AND BOAR TAINT; Androgens; Oestrogens; Target organ responses to androgens and oestrogens; 16-Androstenes; Artificial control of boar taint production; Taint and boar meat; Conclusions; Acknowledgements; References
- CHAPTER 3. INTERRELATIONSHIPS BETWEEN SPERMATOZOA, THE FEMALE REPRODUCTIVE TRACT, AND THE EGG INVESTMENTSDeposition of semen and uterine transit; Sperm transport through the utero-tubal junction; Sperm regulation and release by the isthmus; Capacitation and sperm interactions with the egg investments; Acknowledgements; References; CHAPTER 4. ARTIFICIAL INSEMINATION; Functions of AI; Current AI usage; Type of AI service provided; Review of the technical aspects of AI in the light of field developments; Future developments; References; PART II: REPRODUCTIVE DEVELOPMENT IN THE GILT AND SOW
- CHAPTER 5. ENDOCRINE CONTROL OF SEXUAL MATURATION IN THE FEMALE PIG AND SEXUAL DIFFERENTIATION OF THE STIMULATORY OESTROGEN FEEDBACK MECHANISMDevelopment of ovarian function and gonadal steroid levels; Developmental patterns of luteinizing hormone (LH), follicle stimulating hormone (FSH) and prolactin in the pituitary and plasma and the control of ovarian development; The responsiveness of the pituitary; Maturation of negative feedback of gonadal steroids; Development of the stimulatory oestrogen feedback mechanism; Conclusion; Acknowledgements; References
- CHAPTER 6. FACTORS AFFECTING THE NATURAL ATTAINMENT OF PUBERTY IN THE GILTFactors influencing puberty attainment; Conclusions; References; CHAPTER 7. THE CONTROLLED INDUCTION OF PUBERTY; The endogenous control of puberty; Induction of puberty with the male; Induction of puberty with exogenous gonadotrophins; Induction of puberty with oestrogens; Conclusions; References; CHAPTER 8. ENDOCRINE CONTROL OF THE OESTROUS CYCLE; The established luteal phase of the cycle; Luteal regression; The early follicular phase; The late folhcular phase and the pre-ovulatory surge of gonadotrophins
- The periovulatory periodConclusions; References; CHAPTER 9. THE CENTRAL NERVOUS SYSTEM AND THE CONTROL OF PITUITARY HORMONE RELEASE IN THE PIG; Foetal and adult brain control of LH secretion; Oxytocin and vasopressin secretion; References; CHAPTER 10. THE CONTROL OF OVULATION; Control of the luteal phase; Control of follicular phase; Use of altrenogest for reproductive management in gilts; References; CHAPTER 11. THE GILT FOR BREEDING AND FOR MEAT; The influence of gilts on herd productivity; Mating age and productivity; Nutrition of the breeding gilt