نتایج جستجو برای: hatchability
تعداد نتایج: 1457 فیلتر نتایج به سال:
This study aims to evaluate the effect of LED lighting during incubation of Fayoumi eggs on hatchability and hatch chick performance. The experiment was carried out in three groups with total number of 2100 eggs. Eggs were incubated 24 h of complete darkness (G1); 24 h of complete LED lighting (G2); and 12 h of LED lighting then 12 h of darkness (G3). From the obtained results, there were no ef...
In the present study when the egg masses of Lymnaea stagnalis showing different developmental stages were introduced with the sub lethal concentrations of baygon and nuvan from cleavage to before hatching stages exhibited the development arrest in most of the egg capsules due to deviation in protein fractions in the corresponding development stages in comparison to control groups resulted into ...
This study was conducted to determine the effect of detergents on eggs hatchability, survival rates, morphometry and bone structure Wader Pari fish ( Rasbora lateristriata Bleeker, 1854). The were treated with detergent solution, a concentration 0 mg L −1 , 3 6 9 18 27 50 respectively. Each test consisted one aquarium filled 30 eggs. number hatched counted these continually for 1.5 mo morpholog...
The effect of nitrogen content in rice plants on the tolerance of brown planthopper (BPH), Nilaparvata lugens Stål to high temperature, starvation and insecticide, was studied in the laboratory at International Rice Research Institute (IRRI), Philippines. Survival of nymphs and adults, fecundity and egg hatchability were significantly increased by the increase of nitrogen content in host plants...
Evaluation of a thermostable Newcastle disease virus strain TS09-C as an in-ovo vaccine for chickens
In-ovo vaccination is an attractive immunization approach for poultry industry. However, most of the Newcastle disease virus (NDV) vaccine strains used after hatch are unsafe, as in-ovo vaccines, due to their high pathogenicity for chicken embryos. In this study, we evaluated the safety and immunogenicity of a thermostable NDV strain TS09-C, derived from V4 strain, as in-ovo vaccine. Chickens i...
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