Crocodiles: Biology, Husbandry and Diseases (Life Sciences) by F.??W. Huchzermeyer

By F.??W. Huchzermeyer

This ebook is a accomplished reference paintings at the biology, administration and health and wellbeing of crocodiles, alligators and gharials. it really is acceptable to either farmed and captive animals.The introductory bankruptcy describes crocodilian anatomy, body structure, biochemistry, and behavior. One bankruptcy is dedicated to special facets of crocodile farming, specifically food; incubation of eggs; rearing; breeding; slaughter; and welfare. next chapters hide transmissible, nontransmissible and organ illnesses, and illnesses of eggs and hatchlings.

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1987). A. Lance, San Diego, 2000), but according to Youngprapakorn (1990b) sometimes some follicles ovulate prematurely and proceed through the oviduct to the uterus in advance of the others. Fertilization takes place in the infundibulum or upper oviduct before the albumen and shell are secreted in the glandular part of the oviduct (uterus). The eggs are then stored in the muscular part (vagina) until they are laid. 5 weeks before they are laid (Lance, 1989). A. Lance, San Diego, 2000). Oestradiol liberated during ovulation increases plasma calcium levels for the production of the eggshells, but, unlike birds, crocodiles do not deposit calcium in their bones before ovulation (Elsey and Wink, 1986).

There are also individual differences. 6. 10. Mathematical approaches to length–mass relationships of crocodilians were explored by Wilkinson et al. (1997). 4. Age–length–weight relations of marked and released American alligators (McIlhenny, 1934). 5. Age–length–weight relations in farmed Nile crocodiles (Loveridge and Blake, 1972). 6. Age–length–weight relations of two African dwarf crocodiles reared in captivity (Helfenberger, 1982). , 1995). Similar ages may be attained by individuals of other crocodilian species.

Abdominal fat body of Osteolaemus tetraspis. Fig. 42. Histology of an almost depleted abdominal fat body of a Nile crocodile hatchling. Note the large nuclei of the fat cells. The egg Crocodilian eggs are elongate elliptical and have a hard shell. The size of the egg varies with the species, with the age of the female that lays the egg – young females laying smaller eggs than mature females – and indi- vidually between females. Larger eggs produce stronger and more viable hatchlings, which rapidly outgrow hatchlings from smaller eggs.

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