AIM To describe the effect of high dose progesterone (HDP) alone, or in combination with folic acid (FA), on occurrence of neural tube defects (NTDs) in chick embryo. MATERIAL AND METHODS 60 Fertile, specific eggs of Fyoumi species of chick were selected at zero hr of incubation. They were incubated at 37.5 °C and 75% relative humidity until the embryos reached stage eight of ...

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...

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...

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...

Objective: In recent years, antibiotics have been used widely in the glob to prevent and treat bacterial diseases. They injected into eggs to eliminate pathogens and prevention of egg transmission of disease, but the adverse effects of drugs have always been a major concern. There is little information available about the safety of tetracycline drugs in the embryonated eggs of the birds. The ob...

A study was conducted to examine the effects of diets supplemented with organic selenium, (Se) and zinc, (Zn) on the performance of Cochin exotic breeder hens. Forty-two week old hens (n=120) and males (n=12) were assigned to four treatment groups of 10 females and 1 male each. Birds with no mineral supplementation (Group 1); feed supplemented with .33 ppm Se (Group 2) feed supplemented with 20...

BACKGROUND & OBJECTIVES The use of low concentrations of boric acid as a potential and effective control agent for the eggs and immature stages of Aedes aegypti L. and Aedes albopictus Skuse (Diptera: Culicidae) is found to be safe and effective as compared to synthetic chemical insecticides. The study aims to determine the ovicidal concentration of boric acid, its effective concentration for o...

Broiler parent stock of 7851 Cobb-500, 8388 Ross and 8745 Hubbard-Hi-Yield were reared in controlled (slated cum floor system) house to determine the egg production performance, fertility and hatchability. A total of 151200 hatching eggs of Cobb-500, Ross and Hubbard-Hi-Yield broiler strain were collected and set in the incubator in 10 batches having 15120 eggs in each batch and 5040 eggs in ea...

In previous experiments (1) the multiplication of typhus rickettsiae in embryonated eggs was found to cause an initial increase in oxygen uptake (as compared with non-infected control eggs) followed by a prolonged decrease terminating in embryonic death. Preliminary experiments (unreported) showed an essentially similar effect of influenza virus A infection on the oxygen consumption of eggs. In...

In a pair of experiments, we determined whether recently fertilized Japanese quail, Coturnix japonica, with less to gain from new sexual encounters than females without sperm in their sperm-storage tubules, would reduce their probability of sexual harassment by avoiding conspecific males (experiment 1) and affiliating with conspecific females (experiment 2). We found that after copulating with ...