Premature ovarian failure is defined as a primary ovarian defect characterized by absent menarche (primary amenorrhea) or premature depletion of ovarian follicles/arrested folliculogenesis before the age of 40 years (secondary amenorrhea). Hormonally, POF is defined by abnormally low levels of estrogen and high levels of FSH, which demonstrate that the ovaries are no longer responding to circul...

The objective of this study was to elucidate the optimum protocol timing thermal manipulation (TM) during embryogenesis, which underline genetic improvement muscle thermotolerance acquisition. For present study, 1,440 fertile eggs were divided randomly and equally into control (37.8 °C with 56% relative humidity) four thermally manipulated groups (TM1, TM2, TM3, TM4) subjected 39 for 18 h 65% h...

Poultry production at all scales of operation is wholly dependent on the supply day-old chicks. Two important factors that have a significant impact chicks are fertility and hatchability. Hatchability proportion fertile eggs actually hatch, whereas refers to incubated. Understanding elements affect hatchability important. Breeds, diet, age hens, environmental stress, egg weight, shell thickness...

BACKGROUND:The bacterial contamination of fertile eggs isthe most common cause of embryonic death in ostrich hatcheryunits leading to financial loss in ostrich industry. OBJECTIVES:The aim of this research was to investigate the bacterialcontamination status, with emphasis on Escherichia coli, ofostrich hatcheries and the antimicrobial resistance profile ofisolated Escherichia coli. METHODS:Ato...

Background: In the current Iranian poultry industry, antibiotics are the most frequently used additive in poultry feeds to increase productivity. The negative effects on human health, resulting from the consumption of chicken whose feeds contain antibiotics, makes finding an appropriate alternative of great importance. As a result of their nature, herbal extracts could be specifically considere...

background: in the current iranian poultry industry, antibiotics are the most frequently used additive in poultry feeds to increase productivity. the negative effects on human health, resulting from the consumption of chicken whose feeds contain antibiotics, makes finding an appropriate alternative of great importance. as a result of their nature, herbal extracts could be specifically considere...

The generation of artificial gametes is a real challenge for the scientific community today. In vitro development of human eggs and sperm will pave the way for the understanding of the complex process of human gametogenesis and will provide with human gametes for the study of infertility and the onset of some inherited disorders. However, the great promise of artificial gametes resides in their...