this survey was done for constructing an egg sorting machine which could sort white eggs from fertilized eggs. egg sorting machine was constructed based on physiological properties of trout egg. fertilized eggs have much more elasticity than white or non-hatched eggs. so the hatched eggs will fly back if were hit to a solid surface. the machine divided to 5 parts including mechanical, electrica...

The world of scientific discovery often remains far-fetched to ordinary people. Although the significance of engaging the public and making the science accessible has been increasingly recognised, few efforts have been made to investigate the popular stereotype of ‘crazy’ scientists, ambitious and sometimes nerdy. Whilst the media tend to focus on very few glamorous scientist celebrities, the m...

To study the putative transfer of antibiotic resistance from broiler breeders to human, hen’s eggs and theirday-old chicks were examined for the presence of bacteria. The most frequently isolated organisms indecreasing order were: Streptococcus spp., Bacillus spp., Staphylococcus spp., Klebsiella spp., Enterobacterspp. and Escherichia coli followed by Citrobacter spp., Proteus spp. and Pseudomo...

This study was conducted  to evaluate the antifungal effects of garlic (Allium sativum) and wormwood (Artemisia sieberia) 80-85% purity ethanolic extracts on rainbow trout (Oncorhynchus mykiss) eggs incubation and larvae survival rate. The experimental group divided to three different doses of garlic (50,100,200 ppm), wormwood (25, 50, 100 ppm), green malachite (2 ppm) as positive control group...

The possibility that the surface of the egg of the sea urchin Arbacia punctulata contains a species-specific receptor for sperm has been investigated. The extent of fertilization of eggs of A. punctulata, which is proportional to the number of sperm, is unaffected by the presence of either eggs or membranes prepared from eggs of Strongylocentrotus purpuratus. In marked contrast, membranes prepa...

A total of 2160 images of candled, incubated ostrich eggs were digitized to determine the percentage of egg volume occupied by the air cell at different stages of incubation. The air cell on average occupied 2.5% of the volume of fresh eggs. For eggs that hatched successfully, this volume increased to an average of 24.4% at 41 days of incubation, just prior to hatching. Air cell volume at 29 da...

To determine the effects of kimchi extracts at different temperatures on larval development, Ascaris suum eggs were mixed with soluble part of 7 different brands of commercially available kimchi and preserved at either 5℃ or 25℃ for up to 60 days. A. suum eggs incubated at 25℃ showed marked differences in larval development between kimchi extract and control group. While all eggs in the control...

Globodera spp. eggs go through a diapause, which remains dormant until favorable hatching conditions are reached. Because of the regulatory concerns with cyst nematodes, it is often only possible to rear eggs for research in the greenhouse. However, hatch is often lower for greenhouse-produced eggs than for eggs obtained from the field. The goal of this research was to determine storage conditi...

b ackground: we tried to investigate the hair contamination of pet dogs and farm sheepdog with toxocara eggs in terms of the different sex and age groups in north-west of iran (urmia and its sub- urbs). m ethods: hair samples were collected from a total of 138 pet and farm sheepdogs from november 2008 to june 2009 in urmia city and the suburb (west azerbaijan-iran) and examined for the pres- en...

determination of the accurate time of egg stripping after ovulation has been regarded as one of the most important factors in the successful reproduction of caspian brown trout(salmo trutta caspius). to determine the best time for egg stripping after ovulation and over- ripening of the oocyte in the caspian brown trout , the eggs of fish were retained in the coelomic cavity of females at 7 ± 6°...