Introduction It has been established that UBR4 encodes E3 ubiquitin ligase, which determines the specificity of substrate binding during protein ubiquitination and associated with various functions nervous system but not reproductive system. Herein, we explored role on fertility a Drosophila model . Methods Different Ubr4 knockdown flies were using UAS/GAL4 activating sequence Fertility, hatcha...

When domestic fowl were maintained under constant incandescent illumination from time of hatching, the rate of egg production was similar to that of control birds on a diurnal schedule. Hatchability offertile eggs produced by such hens was found to be unaffected by lighting treatment of the parents. Fertility was, however, markedly impaired in the males reared under continuous light. Artificial...

The influence of timing of artificial insemination on fertility and hatchability of breeder hens was carried out by inseminating breeder hens at 10:00 hr and 15:00 hr with pooled semen from Shikabrown White breeder cocks for four weeks. Fertile eggs were collected two days after the first insemination and stored at a temperature of 16 C for seven days before incubation. Fertility was higher (P ...

Drosophila is a suitable model organism to test phytochemicals. The objective of our study was to explore the potential of Achyranthes aspera on reproductive fitness of Drosophila melanogaster using larval and adult feeding methods. The decrease in the fecundity, fertility, developmental time, ovarioles number, hatchability and viability was observed in adult feeding than larval feeding methods...

High ambient temperature is a major factor for diminishing reproductive performance of broiler parent stocks. Homozygous naked neck (NaNa) broilers, which possess a higher adaptation to heat due to a reduction of feather coverage, exhibited higher growth rates and meat yield. This study was conducted to investigate the influence of genotype x temperature interactions on the reproduction traits ...

The first objective of this study on broiler breeders was to investigate the genetic basis of variability in hatchability over age using a longitudinal model. Weekly percentage hatch of fertile and hatch of set eggs were available for 23,250 dams mated to 3,106 sires of the same age between the 28th and 54th week of life. Hatch of set was very highly correlated with fertility and showed a simil...

This study was carried out at El Takamoly Poultry Project, Fayoum, Egypt,. A total number of 498 (450 breeder hens and 48 cocks) birds of Golden Montazah (GM) and Fayoumi (F) strains at 42 wks of age were used to evaluate the effects of two dietary levels of Se as Sel-Plex (0.1 or 0.2 mg/Kg diet) on breeder hens performance. Birds were divided randomly into 3 equal treatment groups of 83 birds ...

The major contribution of backyard poultry consumption in improving per capita nutrients level is well documented. Further improvement would be possible by crossbreeding with the highly producing breeds like white with the locally used in backyard poultry which is low producer. Fertility and hatchability are important parameters that should be studied before finalizing the cross breeding progra...