Studies on Foetal Testicular Development in Sheep

the effect of e-64 on the developmental competence of sheep cocs during in vitro maturation

in the present study, the effect of e-64 at different concentrations (0.5, 1, 5 and 10 µm) added to (1) the ivm medium on oocyte nuclear maturation and developmental competence of ovine oocytes, and (2) to the ivc medium on embryonic development of ovine embryos were investigated.

The development of motor responses in the stomach of the foetal sheep.

Knowledge of the movement of the gut in the mammalian foetus is mainly derived from observations on small laboratory animals. Yanase (1907) made a systematic study of pre-natal intestinal movement in the guinea-pig, and observed that the appearance of peristalsis coincided with the time of development of the longitudinal muscle of the gut, at about the 27th day of gestation. At the stage when c...

Maternal Food Consumption and Foetal Growth in Merino Sheep

The intake of a pelleted diet offered ad libitum to pregnant Merino ewes between the 90th and 140th days of pregnancy was influenced by their previous nutritional history and degree of body fatness. Marked compensatory intake occurred in previously ill-fed ewes whereas the intake of well-fed fat ewes carrying single foetuses declined slightly as pregnancy proceeded. The body weights of single f...

Maternal-foetal glucose kinetics in conscious, catheterised sheep.

The Interstitial Cell in the Testis of the Foetal Sheep

The testes of 18 foetal sheep, of crown-rump length from 2-8 to 40 cm, have been studied by the PAS, Sudan black, and plasmal tests. Typical interstitial cells differentiate from mesenchymal precursors; the nucleus alters first, becoming ovoid and vesicular; then the cytoplasm increases in amount, its processes become fewer and smaller, sudanophil lipid droplets appear, and the result is a lipi...