In order to design an integrated pest management strategy, the insecticidal activity of product BioArt on eggs and adults Caryedon serratus (Ol.) was studied in laboratory at different concentrations. The main results revealed that affected survival treated stages, depending concentration applied. It caused 44.44% embryonic mortality C1 C2 82.22% larval C1. This bioactivity is also expressed by...

BACKGROUND Predictive modeling of the biological effects of nanomaterials is critical for industry and policymakers to assess the potential hazards resulting from the application of engineered nanomaterials. METHODS We generated an experimental dataset on the toxic effects experienced by embryonic zebrafish due to exposure to nanomaterials. Several nanomaterials were studied, such as metal na...

introduction: stem cell biology has been the subject of much recent discussion. embryonic stem (es) cells, derived from the inner cell mass of the blastocyst stage of early mammalian embryos are expected to become a powerful tool in future regenerative medicine and developmental biology due to their capacity of self-renewal and pluripotency. in the present study, the ultrastructural development...

the use of quantum dots (qdots) as bright and photostable probes for long-term fluorescence imaging is gaining more interest. thus far, (pre)clinical use of qdots remains limited, which is primarily caused by the potential toxicity of qdots. most qdots consist of cd2+ ions, which are known to cause high levels of toxicity. therefore, the cytotoxic effects of cdse quantum dots on embryonic devel...

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...

A 12-wk laying trial, using 240 hens and 24 cocks of 52-wk old Fayoumi chicken strain, was conducted to determine whether hatchability can be improved by dietary biotin supplementation during the late stages of egg production and to study its effect on progeny performance. Birds were divided into 4 equal groups of 6 replicates each. A corn-soybean meal basal layer diet was formulated to contain...

The aim of the current study was to determine the effects of different eggshell temperatures (EST) during 10 to 18 d of incubation on embryonic development, hatchability, chick quality, first-week broiler performance. The EST were maintained within the temperature ranges of 33.3 to 36.7, 37.8 to 38.2, and 38.9 to 40.0°C for the low, control, and high EST treatments, respectively. From d 15 to 1...

Salmonids are a socioeconomically and ecologically important group of fish that often managed by stocking. Little is known about potential sex-specific effects stocking, but recent studies found the sexes differ in their stress tolerances already at late embryonic stage, i.e., before hatchery-born larvae released into wild long morphological gonad formation. It has also been speculated life his...