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Introduction to controlled reproduction in pigs; The sow's oestrous cycle and associated events; Artificial control of oestrus and ovulation in pigs; Pregnancy testing in pigs; Control of farrowing; More frequent farrowings in pigs; Increasing litter size in pigs; Embryo transfer and associated techniques in pigs; Breeding pigs at younger ages.
As a continuation of the earlier volumes in this series, the proceedings of the Eighth International Conference provide authoritative and up-to-date information on pig reproduction research. This volume, which contains manuscripts accompanying the state-of-the art lectures, the parallel sessions, and the expanded abstracts, provides an authoritative and up-to-date source of information on research in pig reproduction. This text is an invaluable resource for students, teachers, veterinarians, animal scientists, consultants, and technologists with an interest in all aspects of pig reproduction.
This textbook provides a detailed view of the different ways in which reproduction in cattle, sheep, pigs and horses can be controlled and manipulated. It is primarily of interest to students of animal science and veterinary medicine, but will also be of use to those who are concerned with the practical aspects of reproduction control, whether in an advisory capacity or in applying techniques on the farm itself. A major objective of the book is to draw attention to information which may be used directly to increase the efficiency of the livestock industry.
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 and boar taint; interrelationships between spermatozoa, female reproductive tract, and egg investments; and artificial insemination. Discussions focus on androgens, estrogens, deposition of semen and uterine transit, sperm regulation and release by the isthmus, and types of artificial insemination. The manuscript examines endocrine control of sexual maturation in female pigs and sexual differentiation of the stimulatory estrogen feedback mechanism and factors affecting the natural attainment of puberty in gilts. Discussions focus on development of ovarian function and gonadal steroid levels; development of the stimulatory estrogen feedback mechanism; and maturation of negative feedback of gonadal steroids. The text also takes a look at controlled induction of puberty, endocrine control of the estrus cycle, and control of ovulation. The selection is a valuable reference for farmers and readers interested in pig reproduction.