Sirma Stenzel

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The PMS and HCG doses by which to induce puberty and successfully use the first induced oestrus were tested in three experimental slaughter series on 197 prepuberal young sows. An injection of 500 International Units of PMS and 250 IU of HCG was found to bear greatest promise. While higher dosages gave higher rates of ovulation and, following insemination,(More)
Four experimental series were applied to 342 prepuberal young sows to establish ovulation developments. Different periods of time were allowed to elapse between injection and slaughter. Injected were 400 IU PMS/200 IU HCG or 500 IU PMS/250 IU HCG. Onsets of ovulation were found to be highly differentiated and variable. Some of the animals had completed(More)
Different frequencies and periods of insemination were checked with the view to optimising puberty induction to young sows, for which purpose 500 IU PMS/250 IU HCG were injected to 571 animals in seven experiments. Insemination was carried out by deadline, since follicle stimulation was exhibited by almost all animals following the above treatment, while(More)
The effects of various doses of human chorionic gonadetropine (HCG) to stimulate ovulation in 86 gilts in which puberty had been induced by administration of 500 IU of pregnant mare serum (PMS) and 250 IU of HCG were established by slaughter. Only 26.9 per cent of the group without HCG had completed ovulation 120 hours from puberty induction, but 93.5 per(More)
Eighty gilts were slaughtered following different time intervals from biotechnical puberty induction, using 500 IU or PMS and 250 IU of HCG, and stimulation of ovulation, using 500 IU of HCG, 72 hours after puberty had been induced. The majority of those animals was found to have ovulated between 96 and 120 hours from puberty induction. Only 3.2 per cent of(More)
Several air dispersion models are available for the prediction and simulation of hazard areas associated with accidental releases of toxic gases. The model packages (commercial or free of charge) include a chemical database, an intuitive graphical user interface (GUI) and automated graphical output. They are easy to use and can operate fast and effectively(More)
A conclusion derived from the slaughter of 69 gilts was that no role was played by the time intervals tested between puberty induction, using 500 IU of PMS and 250 IU HCG, and subsequent action to stimulate ovulation. Very good follicle maturation and follicle formation as well as the usual uterus and ovary weights were observed, no matter whether 500 IU of(More)
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