This study aims to determine the effect of in-ovo injection L-arginine into local chicken eggs on embryo development and chick performance chicken. A total 160 were incubated using semi-automatic incubator with temperature 37-38C relative humidity 55-65%. The injected solution has a concentration 0.5% (m/v). In treatment was divided 4 groups, first without (control), second 0.2 mL (m/v)/egg, th...

(1) Explants of renal cortex from 7-day mice or 5-day rats were reared on plasma clots, in the presence or absence of chick embryo metanephros. (2) The size of outgrowth, estimated after 48 h, was similar for renal cortex of both species. When reared in chick embryo extract in the presence or absence of metanephros, the outgrowth estimated after 48 h was 2-08 ±0-092 greater than that of the ini...

Two prominent alpha-fetoproteins are found in chick embryo plasma up to and slightly beyond hatching. Only antisera against chick embryo plasma resolve them. alpha3-fetoprotein is a lipoprotein, the first fetoprotein thus described. It probably functions to transport lipid from the yolk to the embryo. The other fetoprotein (alpha4) is a major glycoprotein. Both are made by the liver and yolk sa...

Mammalian lefty and zebrafish antivin, highly related to lefty, are shown to be expressed asymmetrically and involved in the specification of the left body side of early embryos. We isolated a chick homologue of the antivin/lefty1 cDNA and studied its expression pattern during early chick development. We found that antivin/lefty1 is expressed asymmetrically on the left side of the prospective f...

We have chosen a vertebrate model accessible during neurulation, the chick, for analysis of endogenous insulin signaling and its contribution to early embryonic cell survival. Unlike rodents, humans and chickens have a single preproinsulin gene, facilitating its prepancreatic expression characterization. We show that in vivo interference with embryonic insulin signaling using antisense oligonuc...

a 3×3 factorial arrangements experiment was conducted to evaluate the effect of fennel extract and vitamin d3 on performance, hatchability, chick quality characteristics and immunity. this experiment was done with using 360 ross 308 broiler breeders after molting (84 - 92 weeks) in a completely randomized design with three levels (0, 50, and 100 mg/kg of diet) of fennel extract and three levels...

The purpose of this experimental study was to evaluate the effect of chicken amniotic fluid (AF) on a cross section of rat sciatic nerves. Thirty adult male Sprague-Dawley rats weighing 275 to 300 g, were randomized into three groups treated with (1) amniotic fluid or AF (n=10), (2) normal saline or NS (n=10), and (3) sham surgery (n=10). The AF was aspirated from the amniotic cavity of incubat...

objective: in recent years, amino acids are used in veterinary medicine for many purposes. they injected into hatching eggs to increase chick body weight and performance at hatch, but the adverse effects of amino acids have always been a major concern. there is scant information available about the pathological alterations of amino acids in the chicken embryonated eggs. the objective of this st...