Broiler performance is known to be related to embryonic developmental parameters. However, strain or genotype differences with regard to embryo physiological parameters and juvenile growth have received little attention. A total of 1,200 hatching eggs produced by Cobb and Ross broiler breeders of the same age were studied. At setting for incubation and between 66 and 130 h of incubation, egg re...

This study was designed to investigate the effects of the residual yolk-sac on the development of the digestive system and immune response of broiler chicks. Two experiments were conducted in this study. In the first one, 60 day-old broiler chicks (Lohmann) were allocated into three experimental groups according to the status of the residual yolk sac; deutectomized (surgicallyremoved residual y...

Mcrhods 1) Convex (+15 D) and concave (-15 D) lenses were mounted over one eye of day old chicks (n=25). Refractive states and ocular diameters were measured by retinoscopy and ultrasound. The eyes were enucleated, weighed and measured after the birds were sacrificed on the 7th day. The remaining heads were cleaned and placed in 2% NaOH to rem& all soft tissues.Orbital dimensions were measured ...

BACKGROUND A bacterial role in the obesity pandemic has been suspected based on the ingestion of probiotics that can modify the gut flora. The objective of our study was to determine if increased Lactobacillus sp. in the gut flora of newborn broiler chicks and ducks could result in weight gain increase. METHODOLOGY Female broiler chicks (Gallus gallus domesticus) and ducks (Anas platyrhynchos...

Abstract The purpose of this research was to examine the impact varying doses ginger powder on broiler productivity. There were 180 commercial strain Ross 308 day old chicks utilized in experiment, and each chick weighed allocated randomly among four treatments. Three different treatments tested, with a replication 15 chicks. diet supplemented 0.5, 1.0 2.0g/kg powder, respectively, as control. ...

Broiler starter diets from three commercial feed mills (same company, different locations) were fed to day-old Hubbard Hi-Y broiler chicks along with a Control diet manufactured at Ohio State University. The analyzed calcium levels were as follows: Source 1, .76% ; Source 2, .97% ; Source 3, .81 % ; Control, .98%. Each of the diets was fed to 5 replicate pens of broiler chicks in Petersime batt...

the objective of the present study was to investigate the effects of high dietary levels of l-arginine during starter period on growth, intestine morphology and immune system of female ross broiler chicks. in this experiment, 192 day old female ross broiler chicks were fed with 4 dietary treatments in a completely randomized design, in which each dietary treatment included 4 replications. dieta...

Exposing eggs multiple times to ultraviolet light (UV) and 3% hydrogen peroxide (H2O2) results in a greater reduction of eggshell bacteria compared to eggs treated only once with this combination. However, it is unknown if this repetitive treatment will have any effect on hatchability. Therefore, the objective of this experiment was to determine if hatchability would be affected by reducing egg...

Exposing a pregnant mammal to stressors causes behavioral and physiological alterations in her offspring ("prenatal stress"); however, elucidation of the underlying mechanism is hindered by an inability to control maternal compounds that may affect the fetus. We designed this experiment to determine if the autonomously developing chicken embryo could be developed as a model for prenatal stress....