This article examines the ethics of egg donation. It begins by looking at objections to noncommercial gamete donation, and then takes up criticism of commercial egg donation. After discussing arguments based on concern for offspring, inequality, commodification, exploitation of donors, and threats to the family, I conclude that some payment to donors is ethically acceptable. Donors should not b...

Breeding for egg size differs in several important respects from other problems of poultry breeders. In the improvement of egg number, livability, hatchability and many other economically important characters, the breeder always selects in one direction. His goal is to have the birds in his flock lay the largest possible number of eggs, live as long as possible, at least until he i s ready to d...

Abstract Snakes lay their eggs in clutches of different size, which are usually attached to each other forming a cluster. Egg-clustering is widespread phenomenon across alethinophidian snakes, mostly recorded Pythonoidea and caenophidian clades. Here we report new type egg-clustering for threadsnakes (Leptotyphlopidae) that departs from the type. We found females Epictia australis Leptotyphlops...

The goal of this experiment was to investigating of effects of different levels of nano chromium (N-Cr) in diet on egg quality and blood chromium content of japanese quail. Two hundred and forty laying japanese quail (45 day old) were randomly distributed to 20 experimental unit with 12 birds in cage pens of 40 × 80 cm. Experimental treatments include: 1) control national research council (NRC,...

s of papers 85 (PE) and PC of birds fed Diet III and IV when compared to Diet I and II. The n-6:n-3 fatty acid ratio was highest in the VT of birds fed Diet II (P<0.05). The content of lipid oxidation products as measured by TBARS assay was higher in the VT of birds fed Diet II, III, and IV when compared to Diet I (P<0.05). The total lipid content of VT constituted 3.1, 3.2, 3.0 and 3.0% for Di...

The goal of this experiment was to investigating of effects of different levels of nano chromium (N-Cr) in diet on egg quality and blood chromium content of japanese quail. Two hundred and forty laying japanese quail (45 day old) were randomly distributed to 20 experimental unit with 12 birds in cage pens of 40 × 80 cm. Experimental treatments include: 1) control national research council (NRC,...

481 fresh fertilized eggs of three Kurdish local chickens (Black with brown neck, White with shank feathering, and White with non-feathering shank) were collected at pre-molting (355 eggs) and post-molting (126 eggs) stages to evaluate external egg traits. A venine caliper was used to determine the length and breadth of eggs to calculate Shape index. Results indicated that egg weight increased ...