trans-3-Hydroxy-nn-proline-3,4-3H was synthesized by reduction of N-carbobenzoxy-3-keto-DLproline methyl ester with NaBH4 (4). Uniformly labeled n-proline-r4C was obtained from New England Nuclear Corporation. Uniformly labeled 4-hydroxy-r.-prolineJ4C was generously donated to us by Dr. Chozo Mitoma. Seven-day-old chick embryos were obtained from the Duckworth Hatchery (Elkridge, Maryland) and ...

trans-3-Hydroxy-nn-proline-3,4-3H was synthesized by reduction of N-carbobenzoxy-3-keto-DLproline methyl ester with NaBH4 (4). Uniformly labeled n-proline-r4C was obtained from New England Nuclear Corporation. Uniformly labeled 4-hydroxy-r.-prolineJ4C was generously donated to us by Dr. Chozo Mitoma. Seven-day-old chick embryos were obtained from the Duckworth Hatchery (Elkridge, Maryland) and ...

we studied the hepatotoxic effects of a deltamethrin containing formulation (decis®) on developing em-bryo of gallus domesticus. fertilized eggs were immersed in three different concentrations of deltamethrin (12.5, 25 and 50 mg/l) for 60 min at 37 ˚c prior to incubation (ed 0) and on the 4th day of incubation (ed 4) and incubated till embryonic day (ed) 16. exposure to 50 mg/l of deltamethrin ...

Electron micrographs, stained Epon-embedded sections, and silver stains of the ciliary ganglion of chickens 19 days prehatched, 4 days, 5 weeks, 6 months, and 1 to 2 years of age were studied. The majority of ganglion cells are large neurons; smaller cells are restricted to a dorsal, distal part of the ganglion. The following description applies to the large neurons. Three to twenty lamellae of...

In commercial poultry husbandry practice, the hatchery takes over the incubation of bird eggs in order to provide as many day-old chicks as needed at any time to farmers. The main bottleneck for poultry industry development in Togo is the lack of day-old chick supply. Indeed, there is no proficient hatchery which can cover the needs of the farmers because of lack of information about hatchery m...

The reactivation of chicken erythrocyte nuclei in chick-mammalian heterokaryons resulted in the activation of chick globin gene expression. However, the level of chick globin synthesis was dependent on the mammalian parental cell type. The level of globin synthesis was high in chick erythrocyte-rat L6 myoblast heterokaryons but was 10-fold lower in chick erythrocyte-mouse A9 cell heterokaryons....

introduction: in order to study the morphogenetic role of cell death in the development, a series of comparative studies on the structure of the interdigital membrane of chick (with free digit) and duck (webbed digits) embryos was done. materials and methods: chick embryos ranging from 6.5 to 10 days of incubation (stag 30-36 h-h) and duck embryos ranging from 8.5 to 12 days of incubation at 12...

Haemoglobins of chicks, yearlings and known-age sub-adults of the royal penguin were investigated by starch-gel electrophoresis at pH 8-6. Two haemoglobin components were observed in yearlings and sub-adults. These were assumed to be the haemoglobins of adults. Another three haemoglobin components were observed in 3-week-old chicks. In seven out of eight fledging chicks, these chick haemoglobin...

introduction: the objective of this study was to evaluated effect of retinoic acid (ra) on the tibia osteogenesis in the chick embryos. materials and methods: for this purpose 0.75mg ra dissolved in 2ml dimthylsulfoxide (dmso) was droped on the limb bud of chick embryos at sixth day of incubation. the osteogenesis of tibia in ra-treated embryos were compared with normal control and dmso-treated...

Chicken meat consumption in Ghana has significantly increased the last two decades. However, production stagnated, and domestic producers are struggling to satisfy local market. Consequently, is dependent on chicken imports. The imports have attracted criticism as they believed be negatively affecting producers. This paper uses typical farms analyze broiler systems impact of represent most comm...