P. Ball – Reproduction in Cattle (Third edition)

Автор: P. Ball
Название книги: Reproduction in Cattle (Third edition)
Формат: PDF
Тема: Репродукция и воспроизводство коров, крупного рогатого скота
Страницы: 251
Качество: Изначально компьютерное, E-book

It bears repeating from previous editions that cattle are an integral part of animal agriculture in all parts of the world. They provide the human population with products such as milk, meat, clothing, fertilizer and fuel, as well as providing draft power in many countries. Demand for some products, such as fat in meat and in milk, has declined in some markets, and in some countries
(e.g., in the European Union) milk production is limited by quotas. Nevertheless, the efficient production of animal protein continues to be of vital importance. An efficient production system must maximize the output of meat and milk per unit of feed input and per animal and, in cattle production, as with other livestock systems, a high level of reproductive performance is absolutely
crucial to efficient production.
Contents
Preface
Reproductive Efficiency in Cattle Production
Anatomy
Bull Fertility
The Ovarian Cycle
Fertilization, Conception and Pregnancy
Parturition and Lactation
The Postpartum Period
Oestrous Behaviour and Its Detection
Artificial Control of the Oestrous Cycle
Artificial Insemination
Pregnancy Diagnosis
Reproductive Problems
Reproductive Biotechnologies
Reproductive Management
Selection for Breeding