INTRODUCTION Nicotiana glauca (wild tobacco, tree tobacco), a member of the Solanaceae family, is a slender shrub or a small erect tree growing up to 5 m high with long, lax branches (Fig. 1). This plant is a native of Argentina that has become widespread in South Africa, occurring mostly on disturbed soil such as old lands, trampled areas and road verges. It is also a common weed along inland ...

An accurate description of the number, location and relative position of the air sacs and their diverticula in the ostrich is essential for a better understanding of the pathogenesis of air sacculitis in this bird. The air sacs were studied in ten ostriches of varying ages by latex or silicone casting of the respiratory tract and dissection. Results revealed that the air sacs of the ostrich con...

The objective of this study was to fit growth curves using nonlinear and linear functions to describe the growth of ostriches in a Brazilian population. The data set consisted of 112 animals with BW measurements from hatching to 383 d of age. Two nonlinear growth functions (Gompertz and logistic) and a third-order polynomial function were applied. The parameters for the models were estimated us...

Gastroduodenal motility has been described in several avian species. In domestic turkeys (Melagridis gallapavo; Duke et al. 1972, Dziuk and Duke 1972), chickens (Gallus gallus; Roche et al. 1971), Cedar Waxwings (Bombycilla cedorum; Levey and Duke 1993), and Leach's Storm-Petrels (Oceanodroma leuchoroa; Duke et al. 1989), the sequence begins with contraction of the pair of thin muscles of the m...

A 10-year-old male cat was presented with severe dyspnoea of fairly recent onset. Thoracocentesis was performed for therapeutic as well as diagnostic purposes and it revealed that a milky-white fluid had accumulated in the thorax. Either chylothorax or pseudochylothorax was suspected. The fluid did not clear when centrifuged, as fluids resulting from other aetiologies would have done, but this ...