Titlebook: Environmental Factors in Mammal Reproduction; Desmond Gilmore,Brian Cook Book 1981 Palgrave Macmillan, a division of Macmillan Publishers

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The role of nutrition in mammalian reproductionnormal mating activities, fertility, and the course of pregnancy. Undernutrition usually reduces milk yields but overnutrition does not. The growth and development of the offspring after birth is hindered by undernutrition and promoted by plenty of food.

Introduction

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Introduction: mammals and their reproduction aerial hunting and to life in water. Three major groups—monotremes, marsupials and placental mammals—exist today, distinguished on many points of anatomy and notably by their modes of reproduction. Some 4200–4500 living species are recognised (Morris, 1965; Harrison Matthews, 1969).

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Photoperiodic control of hormones, growth and lactation in cattlenimals schedule reproductive functions, metabolic adjustments, moults and migrations (Ringer, 1980). The focus of this chapter will be to review research on the effects of lighting on some serum hormones which affect growth and lactation in cattle.

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https://doi.org/10.1007/978-3-642-48007-2for meeting the challenges of the environment. What is intriguing about the process is that seasonal breeders have acquired the capacity for successively turning their reproductive system on and off, a reversible fertility which may be viewed as Nature’s own contraceptive (Lincoln and Short, 1980).