Read e-book online Avian Biochemistry and Molecular Biology PDF

By Lewis Stevens

ISBN-10: 051152577X

ISBN-13: 9780511525773

ISBN-10: 0521455103

ISBN-13: 9780521455107

ISBN-10: 052161211X

ISBN-13: 9780521612111

The biology of birds is various and often differs considerably from that of different vertebrates. Many birds migrate or fly at excessive altitudes, whereas egg-laying and feather creation areas excessive calls for on nutrient uptake and garage. This booklet is the single accomplished and up to date survey of avian biochemistry and molecular biology on hand. It emphasises the similarities and alterations among birds and different vertebrates, targeting new advancements. the 1st part offers with protein, lipid and carbohydrate metabolism, its hormonal keep watch over and the variations that take place in birds. the second one covers the avian genome, gene expression, and avian immunology. development and embryological improvement also are mentioned. Avian Biochemistry and Molecular Biology might be of curiosity to all these engaged on birds, specially postgraduate scholars and researchers.

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Example text

The vitamin requirements for avian species are very similar to those in mammals, although there are some differences. Vitamins are subdivided into two groups, the fat-soluble and the water-soluble vitamins. Apart from the differences in solubility, there are differences in function. Most of the water-soluble vitamins, which include the B vitamins and vitamin C, have known functions as precursors of coenzymes. The functions of the fat-soluble vitamins are less-clearly understood but include both regulatory roles and redox roles.

The structures of retinol, retinal and retinoic acid. p. ) The requirement for vitamin A for rod and cone vision is a small part of the total requirement, which includes a number of systemic functions. The first lesion in vitamin A deficiency in the domestic fowl is that mucous epithelium is replaced by squamous, keratinising epithelium, and this is particularly noticeable in the oesophagus, crop and respiratory tract. Retinoic acid is perhaps the best characterised morphogen in vertebrates and has been extensively studied in developing chick limb bud.

Although blood glucose has been measured in several species, it is only in a few species that it has been studied under differing physiological conditions. Blood glucose concentrations are maintained during 3 days fasting in domestic fowl and quail (Davison & Langslow, 1975; Didier, Remesy & Demigne, 1981). 56 mM (Swain, 1992a). Thus, normal blood glucose levels are high in birds compared with mammals and, in contrast with mammals, the steady-state levels are much less susceptible to change during starvation.

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Avian Biochemistry and Molecular Biology by Lewis Stevens

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