Rate of Heat Production by Bull Spermatozoa
نویسندگان
چکیده
منابع مشابه
Anaero bic heat production of bull spermatozoa.
A micro-calorimeter, suitable for detecting rates of heat production of the order of 1 mcal/h in about 2*3 ml. fluid, is described. Measurements have been made with it of the anaerobic heat production of bull spermatozoa in semen. The result, for the first hour, 220+ 15 mcal/109 live spermatozoa/h at 37° C, is consistent with the hypothesis that, in the first hour of incubation, the heat produc...
متن کاملAnaerobic heat production of bull spermatozoa
A micro-calorimeter, suitable for detecting rates of heat production of the order of 1 mcal/h in about 2*3 ml. fluid, is described. Measurements have been made with it of the anaerobic heat production of bull spermatozoa in semen. The result, for the first hour, 220+ 15 mcal/109 live spermatozoa/h at 37° C, is consistent with the hypothesis that, in the first hour of incubation, the heat produc...
متن کاملAnaerobic heat production and fructolysis of bull spermatozoa at different temperatures.
Bull spermatozoa are regularly preserved in a viable condition at low temperatures, but few experiments have been done on their metabolism at different temperatures. The most systematic examination was that of Blackshaw, Salisbury and van Demark (1957), who reported that the Q10 of aerobic fructolysis was 4-0 between 37 0 and 21 C. and i-6 between 37 and 5 C, for bull semen diluted 1/5 (v/v) wi...
متن کاملFluctuations in the swimming rate of individual bull spermatozoa.
Individual bull spermatozoa were tracked over a distance of several millimetres, measuring as often as possible the time required to swim the length of the micrometer (310 \g=m\). In oestrous mucus from the cow's uterine cervix, the rates of some spermatozoa were found to fluctuate widely, while others remained constant for long distances. Homogeneity of the medium was tested by comparing mean ...
متن کاملStudy of Bull Spermatozoa
The electron microscope has been used to determine the characteristic dimensions and the distribution of the dry mass in bull spermatozoa. The most important result is that all characteristic data are occurring in logarithmic distributions. Furthermore, no correlation between such parameters as head weight and tail weight or head length and tail length was found. The occurrence in logarithmic d...
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ژورنال
عنوان ژورنال: Nature
سال: 1956
ISSN: 0028-0836,1476-4687
DOI: 10.1038/178933a0