Author: David ColePublisher:
ISBN: 9780724179831
Category : Swine
Languages : en
Pages : 21
Book Description
Pig Management Study, 1979-80
Author: David ColePublisher:
ISBN: 9780724179831
Category : Swine
Languages : en
Pages : 21
Book Description
Pig Management Study 1980-81
Author: David ColePublisher:
ISBN: 9780724180998
Category : Swine
Languages : en
Pages : 20
Book Description
Pig Management Study, 1978-79
Author: Pig Management Scheme Results
Author: J. G. DavidsonPublisher:
ISBN:
Category : Agriculture
Languages : en
Pages : 568
Book Description
Control of Pig Reproduction
Author: D.J.A. ColePublisher: Butterworth-Heinemann
ISBN: 1483278328
Category : Science
Languages : en
Pages : 675
Book Description
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.
Pig Management Scheme Results for 1979
Author: R. F. RidgeonManaging Wild Pigs
Author: Benjamin Corey WestPublisher:
ISBN: 9780974241517
Category : Feral swine
Languages : en
Pages : 55
Book Description
Agrindex
Author: Pig Production in South West England
Author: William John Kelsey ThomasPublisher:
ISBN:
Category : Swine
Languages : en
Pages : 36
Book Description
Ecology, Conservation and Management of Wild Pigs and Peccaries
Author: Mario MellettiPublisher: Cambridge University Press
ISBN: 1316953408
Category : Nature
Languages : en
Pages : 472
Book Description
Wild pigs inhabit vast areas in Europe, Southern Asia and Africa, and have been introduced in North and South America, while feral pigs are widespread in Australia and New Zealand. Many wild pig species are threatened with extinction, but Eurasian wild boar populations, however, are increasing in many regions. Covering all wild pig and peccary species, the Suidae and Tayassuidae families, this comprehensive review presents new information about the evolution, taxonomy and domestication of wild pigs and peccaries alongside novel case studies on conservation activities and management. One hundred leading experts from twenty five countries synthesise understanding of this group of species; discussing current research, and gaps in the knowledge of researchers, conservation biologists, zoologists, wildlife managers and students. This beautifully illustrated reference includes the long history of interactions between wild pigs and humans, the benefits some species have brought us and their role and impact on natural ecosystems.