Effects of Extrinsic Selenium Nanoparticles on the Qualitative Parameters Frozen-Thawed Sperm Broiler Breeder Roosters under Oxidative Stress Conditions

The majority of Australian piggeries rely on antibiotics classified as ‘low' importance in human medicine (Jordan et al., 2009). However, there is evidence of antimicrobial resistance to pathogens sampled in pig carcases that are of significant importance to human health, such as Escherichia coli (Smith et al., 2010). With increasing consumer awareness of medicine use and pressure for more welf...

Avian influenza is an important disease of poultry with the potential to cause major epidemics resulting in significant economic losses. The presence of avian influenza viruses (AIV) in chickens in Iran has not been previously reported. An avian influenza outbreak in broiler, layer and breeder farms occurred during a very hot summer in July 1998. Three AIV isolates designated as 101, 102 and 10...

Gossypol, a natural component of cottonseed meal, exists in positive (+) or negative (-) enantiomeric forms, and their levels and ratio could be altered by developing new genetic strains of cotton. Two experiments were conducted to determine the relative toxicity of the individual gossypol enantiomers in laying and broiler breeder hens. In the first experiment, 25 individually caged Hy-Line W-3...

Effects of low-density broiler breeder diets on offspring performance and mortality were studied using 2,100 female and 210 male Cobb 500 breeders. Breeder treatments involved 4 experimental groups and a control group with normal density diets (ND, 2,600 kcal of AME/kg during rearing and 2,800 kcal of AME/kg during laying). In treatment 2, nutrient densities were decreased by 12% (LD12) and 11%...