Histochemischer Nachweis von Phosphatasen, Tetrazoliumreductasen und Succinatdehydrogenase in der Vagina des Rindes wahrend Proostrus und Ostrus

Contents In cows the site of alkaline phosphatase, adenosintriphosphatase, succinate dehydrogenase, NADH-tetrazoliurnreductase and NADPH-tetrazoliumreductase is described in the epithelium of the vaginal surface and the vaginal folds. Our findings during estrous and proestrous justify the conclusion that there exists a functional difference between these two epithelial structures.     

Feinstruktur des groβen Netzes von Schaf und Ziege

The ultrastructure of the adipose tissue connective tissue, mesothelium and milky spots forming the greater cmentum of sheep and goats was studied.
The mixture of connective tissue fibers and adipose tissue is arranged in submesothelial, marginal, and central layers. – The mesothelial cells are covered by a surface coat and are characterized by numerous microvilli and vesicles. The number of milky spots varies greatly. They are commonly found on the surface of the omentum and are covered by modified mesothelial cells; their interior contains macrophages and lymphoid cells.     

Ontogenese des Sexualverhaltens von Ziegen*

A large number of young goats of both sexes were obseiaed from birth for a period of several weeks. The mating behaviour of young males at one month of age did not differ from that oj adults neither in the sequence of movements nor in intensity. At this age sexual maturity begins in the male goat according to the criteria of behavioural biology, although sexual potency does not develop until several months later. The interpretation of these biological eaents as play is not justifiable.