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Full-Text Articles in Life Sciences
The Development Of The Vascular System In Quail Embryos: A Combination Of Microvascular Corrosion Casts And Immunohistochemical Identification, M. C. Deruiter, B. Hogers, R. E. Poelmann, L. Vanlperen, A. C. Gittenberger-De Groot
The Development Of The Vascular System In Quail Embryos: A Combination Of Microvascular Corrosion Casts And Immunohistochemical Identification, M. C. Deruiter, B. Hogers, R. E. Poelmann, L. Vanlperen, A. C. Gittenberger-De Groot
Scanning Microscopy
Although vascular casts, obtained by injection with methacrylates, are frequently used to investigate the adult vascular system, little data are available for embryonic stages. In this paper we use MercoxR in quail embryos in the period of 2 to 7 days after incubation. The microvascular corrosion casts were evaluated in the scanning electron microscope (SEM) with special attention to the development and remodelling of the large arteries and veins. Our results show that the remodelling of the large arteries and veins together with their developing tributary vessels can be visualized from very early embryonic stages onwards. However, complete replication …
Estimates Of Genetic Parameters For Direct And Maternal Effects On Embryonic Survival In Swine, Luis T. Gama, Keith G. Boldman, Rodger K. Johnson
Estimates Of Genetic Parameters For Direct And Maternal Effects On Embryonic Survival In Swine, Luis T. Gama, Keith G. Boldman, Rodger K. Johnson
Department of Animal Science: Faculty Publications
Survival of 16,838 potential embryos was determined by counting corpora lutea and fetuses at 50 d of gestation for 1,081 litters by 225 sires. These data, coded as 1 or 0 depending on whether an ovulation was represented by a fetus, were used to estimate direct and maternal additive genetic variances and their covariance for embryonic survival. Data were from fist-parity gilts of a Large White-Landrace composite population subdivided into two lines, one selected for an index of ovulation rate and embryonic survival for seven generations and a contemporary control line. Variance components were obtained by ANOVA and expectations of …