Download Egg Incubation: Its Effects on Embryonic Development in by D. Charles Deeming, Mark W. J. Ferguson PDF

By D. Charles Deeming, Mark W. J. Ferguson

ISBN-10: 051158573X

ISBN-13: 9780511585739

ISBN-10: 0521390710

ISBN-13: 9780521390712

ISBN-10: 0521612039

ISBN-13: 9780521612036

A contemporary swift growth in our wisdom of embryonic improvement in birds and reptiles has created a necessity for a publication that comprehensively studies and synthesizes facts when it comes to incubation results at the embryonic improvement of those vertebrate sessions. The individuals to this e-book aptly care for those matters in logical elements. the 1st offers with the constitution, form, and serve as of eggs. the second one examines the results of the 4 major parameters, e.g. temperature, water family members, respiration gasoline trade, and turning, at the means of incubation. The 3rd part bargains with early embryonic improvement and the equipment used to enquire and control the embryo. additional chapters take care of estivation, megapodes, and oviparity.

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Additional info for Egg Incubation: Its Effects on Embryonic Development in Birds and Reptiles

Example text

The relative concentration of docosahexaenoic acid is also some two-fold higher in the phosphoglycerides of the embryo tissues than in the yolk. In addition, there are surprisingly high levels of docosahexaenoic acid in the triacylglyceride of the liver and other tissues. The phosphoglyceride in the liver of the alligator also contains high levels of arachidonic and docosahexaenoic acids (Noble et al> 1991). Durying embryonic development in the fowl there is a preferential absorption by the yolk sac membrane of yolk phosphatidyl ethanolamine species particularly rich in docosahexaenoic acid (Noble & Moore, 1965£, 1967V).

A thiamin-binding protein (Muniyappa & Adiga, 1979; Adiga & Murty, 1983) occurs largely in the apoprotein form in albumen, and may inhibit bacterial growth, although its affinity for thiamin is low (KD~3 X 10~ 7 M). Riboflavin-binding protein also occurs in the albumen and although it has been suggested that this apoprotein binds riboflavin too weakly (AT D ~10~ 9 M) to inhibit bacterial growth (Rhodes, Bennett & Feeney, 1959), in vitro studies have demonstrated inhibition (Li-Chan & Nakai, 1989).

Lipid per yolk, g b Alligator0 Lipid composition % Total lipid: Cholesterol ester Triglyceride Free fatty acid Free cholesterol Phosphoglyceride Phosphoglyceride: Phosphatidyl ethanolamine Phosphatidyl serine Phosphatidyl choline Sphingomyelin Others NA, not available. 9 (1990,1991); dHadley & Christie (1974); "combined levels 6-7%. plasma precursors between these species are also indicated (Chapman, 1980). By the very nature of its mode of synthesis there can be no 'standard' lipid composition for yolks of any avian or reptilian species.

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Egg Incubation: Its Effects on Embryonic Development in Birds and Reptiles by D. Charles Deeming, Mark W. J. Ferguson


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