Effects of Incubation Temperature on the Embryonic Development and Hatching Success of the Western Pond Turtle (Emys Marmorata) PDF Download
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Author: Rebecca A. Gordon
Publisher:
ISBN:
Category : Western pond turtle
Languages : en
Pages : 76
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Author: Rebecca A. Gordon
Publisher:
ISBN:
Category : Western pond turtle
Languages : en
Pages : 76
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Author: Alexandra Zannie Dallara
Publisher:
ISBN:
Category : Western pond turtle
Languages : en
Pages : 56
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Author: Nicole Elise Christie
Publisher:
ISBN:
Category : Western pond turtle
Languages : en
Pages : 48
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Author: D. Charles Deeming
Publisher: Cambridge University Press
ISBN: 0521612039
Category : Nature
Languages : en
Pages : 0
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Book Description
This book reviews comprehensively incubation effects on embryonic development in birds and reptiles and presents the first ever synthesis of data from these two vertebrate classes. The book is in three parts. The first deals with the structure, shape and function of eggs. The second examines the effects of the four main parameters on the process of incubation: temperature, water relations, respiratory gas exchange, and turning. The third section deals with early embryonic development and the methods used to investigate and manipulate the embryo. Further chapters deal with aestivation, megapodes and oviparity. International experts in each field have contributed to this extensively referenced volume and it will be of great interest not only to research biologists, but also to bird and reptile breeders, whether in commercial organisations or in zoos.
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages :
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Six experiments were conducted to evaluate the effects of early and late incubation temperatures and hatching basket ventilation on embryonic development and early broiler performance. Eggs were exposed to a constant incubation air temperature of 37.6 & deg;C (99.7 & deg;F) from E 0-17 in Experiment 1 while Experiments 2-5 employed an incubation temperature profile that had an initial dry bulb set point of 38.1 & deg;C (100.5 & deg;F), which was gradually decreased to 37.2 & deg;C (99.0 & deg;F). Experiment 6 exposed eggs to either an Early Hot treatment (EH) that had a short initial air temperature of 38.9 & deg;C (102 & deg;F) followed by 38.1 & deg;C (100.5 & deg;F) to E 3 or an Early Cool treatment (EC) of 36.9 & deg;C (98.5 & deg;F) to E 3. Experiments 1-4 used an average air temperature of 38.1 & deg;C (100.5 & deg;F) during the late incubation period, while Experiments 5 and 6 added a late temperature treatment of approximately 35 & deg;C (95.0 & deg;F) (LC) in addition to 38.1 & deg;C (100.5 & deg;F; LH). Hatching baskets were modified to create ventilation treatments in order to examine the effect of air flow path on embryonic development and used varyingly throughout Experiments 1-6. Two treatments were designed to restricted air flow through the hatching basket by blocking air flow through either the top half of the basket (TT) or the bottom half of the basket (BT). Other hatching baskets remained unaltered to serve as a control group (CN). Experiments 1-2 included all three types but just the TT and BT treatments were used in Experiment 3. Experiments 4-6 used the TT and CN treatments in addition to the baskets at either low density (LD) or high density (HD). The TT treatment produced chicks with significantly less relative yolk sac in Experiment 1, but differences between ventilation treatments did not occur in other experiments. At E 15 of incubation, embryos from the EC treatment in Experiment 6 exhibited a decreased embryo weight and fluid (yolk and albumen) absorption. The LC treatmen.
Author: Cory Randal Etchberger
Publisher:
ISBN:
Category :
Languages : en
Pages : 418
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Author: M. S. Lilburn
Publisher:
ISBN: 9781838792282
Category :
Languages : en
Pages : 0
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Author: Gary C. Packard
Publisher:
ISBN:
Category :
Languages : en
Pages : 8
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Author: J. R. Schubel
Publisher:
ISBN:
Category : Fishes
Languages : en
Pages : 56
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Author: Alicia S. Barlow
Publisher:
ISBN:
Category : Fishes
Languages : en
Pages : 38
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