toxic effects of malathion and endosulfan to fertile chicken eggs were determined. in-jection of 1.25, 2.5, 5.0 and 10.0 mg/egg of malathion into yolk sac of fertile eggs prior to incubation caused mortality of 10.0, 30.0, 83.33 and 93.33% respectively. similar trend was observed with injection of endosulfan doses. malathion and endosulfan at 1.25 mg/egg caused no pronounced ld50 increase in mo...

Background: The aim of this study was to determine the sperm deformity index (SDI) of proven fertile males and compare this with that of infertile males. Methods: The study was carried out at Islamic International Medical College Rawalpindi and Islamabad Clinic Serving Infertile Couples, Islamabad, from July 2005 to July 2006. It was a cross-sectional comparative study. Fifty healthy fertile ma...

BACKGROUND The TwoDay Algorithm is a simple method for identifying the fertile window. It classifies a day as fertile if cervical secretions are present on that day or were present on the day before. This approach may be an effective alternative to the ovulation and symptothermal methods for populations and programmes that find current natural family planning methods difficult to implement. M...

The rate of chromatid breaks was studied in cows with a history of sub-fertility by means of a test based on measurement of the average of breaks induced in lymphocytes of peripheral blood cultures. Fourteen female specimens were divided into two groups: fertile and sub-fertile. Peripheral blood lymphocytes were cultured and prepared for cytogenetic analysis. Two types of culture were establish...

Although female mammal vocal behaviour is known to advertise fertility, to date, no non-human mammal study has shown that the acoustic structure of female calls varies significantly around their fertile period. Here, we used a combination of hormone measurements and acoustic analyses to determine whether female giant panda chirps have the potential to signal the caller's precise oestrous stage ...

Solgi or Sharif Abad tepe (A&B) is one of the larger settlement sites Gamasi-Ab river basin in Nahavand plain. This site lies at intersection old ancient roads that go from Sahne, Harsin and Kangavar to Nihavand other eastern regions. In study this area, pottery Early Bronze Age (Godin IV-Yanik, Kura-Araxes), related Godin III, II historical period were obtained. The examination these artef...