The Physiology of Insect Reproduction

Physiology, Endocrinology, and Reproduction: Reproduction

conditions throughout the test. The hens were provided nutrients to meet the needs of all the hens based upon compilation of the breeder recommendations. The eggs from these strains were collected every 28 days from the previous 24 hrs production. Once collected the quality and compositional properties of the eggs such as pH, solids, whipping height, Haugh units and angel food cakes were evalua...

Physiology of male reproduction.

Physiology of Insect Development

PHYSIOLOGY OF INSECT DEVELOPMENT. Frank L. Campbell, Ed. Chicago, Univ. of Chicago Press, 1959. 167 pp. $4.00. The Physiology of Insect Development, edited by Frank L. Campbell, is one of ten volumes covering the "Developmental Biology Conference Series of 1956," organized by Paul Weiss and held under the auspices of the National Academy of Sciences-National Research Council. The purpose of thi...

Physiology and Reproduction

Testosterone profiles and semen characteristics were determined using yearling and adult captive wild-strain Mallard (Anas platyrhynchos) drakes. Wild-strain Mallard hens were artificially inseminated by modifying a technique developed for domesticated poultry. In both adult and yearling drakes, there was a change in the concentration of circulating plasma testosterone during the reproductive s...

Physiology and Reproduction

The calpains (E.C. 3.4.22.17) and calpastatin constitute an ubiquitous, intracellular, Ca2+dependent protease/inhibitor system. This system has been implicated as a principal regulator of myofibrillar protein degradation in both ante-mortem and postmortem muscle. Although proteolytic activity of the calpains is primarily controlled through interaction of calpain and calpastatin, evidence for an...