Vitamin and mineral levels were determined in the eggs of ostriches and compared with poultry standard values as an indicator point. Deficiencies or excesses of vitamins and/or minerals in the laying hen, and thus in the egg, can lead to infertility, poor hatchability and early chick health problems. Specifics are described. Also, information on vitamin and mineral deficiencies is given.

An experiment was conducted to elucidate the effect of graded levels of vitamin D3 in White Leghorn (WL) layer breeders on egg production, shell quality, hatchability of eggs and juvenile performance of offspring during their late laying period (7288 wk). White Leghorn breeder females were randomly divided into 5 groups of 50 each and were housed in individual California cages in an open-side h...

The current study investigated the effect of short-term selection for four week body weight (BW) on performance of divergent lines of Japanese quail and their crosses. The mean of BW at hatching time, one, two, three and four week oldand BW at sexual maturity time, age at sexual maturity, number of eggs (from 50 to 100 days old), mean of egg weight, percentage of fertility and hatchability in e...

In current study, phagocytosis product (PP) of peripheral blood monocytes was detected among 920 dwarf chickens (460 per sex) at 20 wk of age, and based on discrepancies of PP, the flock was grouped (the highest group, the medium group, and the lowest group). Then serum hemagglutination inhibition antibody titers and subpopulations of T-lymphocytes of each group were examined after inoculations...

to investigate the effect of two dietary levels of l-carnitine and vegetable fat powder on the quality of cockerels' sperm and broiler breeder fertility and hatchability. two hundred and fifty female and twenty five male broiler breeders. were studied classic hubbard parent stocks were randomly distributed in five groups of 50 with five replicates of 10 females and one male. two levels of ...

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...

In principle, parental relatedness, parental age, and the age of parental gametes can all influence offspring fitness through inbreeding depression and the parental effects of organismal and postmeiotic gametic senescence. However, little is known about the extent to which these factors interact and contribute to fitness variation. Here, we show that, in Drosophila melanogaster, offspring viabi...

This study was performed to determine the effect of hatching system (house and hatcher) egg weight (heavy light) on pip-hatch time, hatchability some gosling quality traits. A total 389 eggs (fertile candling) from 2-year-old Turkish Native Goose were used in study. Before incubation process, all individually numbered weighed. Eggs divided into heavy (≥160 g) light (

Past research on feed restriction methods with turkey breeder hens has involved the feeding of 1) high-fiber or low-energy diets, 2) low dietary protein, 3) limited quantities of feed, 4) rations on a skip-a-day program, 5) distasteful compounds, or 6) combinations of these methods. In general, feed-restricted turkey breeder hens showed a reduction in BW and a delay in sexual maturity at time o...

The objective of this study was to determine the effect of rearing systems on reproductive performance of turkey (Meleagris gallopavo). A total of 180 Beltsville Small White and Board Breasted Bronze turkeys were taken for the study and reared under three different rearing system viz. intensive system (full confinement), semi-intensive system (partial confinement and partial day scavenging) and...