Labour Problems in South Africa

A symposium paper on labour problems in the then white ruled South Africa originally presented at symposium on Current Economic Problems in Rhodesia, 2nd November 1972

Sunflower Silage for Steers Smutted Corn Silage for Cows

This bulletin includes the results of two experiments in feeding cattle as follows: Part I Sunflower Silage for Steers. Part II Corn Smut Silage for Pregnant Cows

Test of Universality in Anisotropic 3D Ising Model

Chen and Dohm predicted theoretically in 2004 that the widely believed universality principle is violated in the Ising model on the simple cubic lattice with more than only six nearest neighbours. Schulte and Drope by Monte Carlo simulations found such violation, but not in the predicted direction. Selke and Shchur tested the square lattice. Here we check only this universality for the susceptibility ratio near the critical point. For this purpose we study first the standard Ising model on a simple cubic lattice with six nearest neighbours, then with six nearest and twelve next-nearest neighbours, and compare the results with the Chen-Dohm lattice of six nearest neighbours and only half of the twelve next-nearest neighbours. We do not confirm the violation of universality found by Schulte and Drope in the susceptibility ratio.Comment: 6 pages including 4 figures, Physica A, in pres

Evaluation of Shugor, Dubasi and Watish subtypes of Sudan Desert sheep at the El-Huda National Sheep Research Station, Gezira Province, Sudan

Presents results obtained from a trial conducted at El-Huda National Sheep Research Station, Sudan, Shugor, Dubasi and Watish subtypes of Sudan Desert sheep to compare productivity, reproductivity and animal performance, with particular reference to lambing, lambing intervals, body weight, growth rates and mortality rates, incl. recommendations for further investigations

Forage Crops for Lambs

The object of the experiment was to ascertain the value of different forage crops for the Iamb in the fall of the year when the pasture grasses become partially dried and the ewes lessen in their feed for the Iamb. The condition of the Iamb at marketing time is governed chiefly by the kind of feed it and its dam have received since birth of lamb, and anything that can be done to increase its growth and condition must be considered an advantage. We consider it a good practice to wean the spring Iamb in early fall when pastures begin to dry up so the ewe will have time to build up before cold weather

Improving Winter Rations for Pigs

An efficient winter ration for fall pigs is one which supplies not only the essential nutrients of a balanced ration but which also furnishes adequately those energizing elements which are obtained so abundantly, even if incidentally, from direct sunlight and succulent pasture during the summer months. The standard ration of yellow corn and tankage is not a very efficient winter ration for fall pigs because these feeds do not supply sufficiently the vitamins which are so necessary for satisfactory growth and development. Fortunately, this practical and popular ration may be easily improved by the addition of alfalfa hay and linseed meal, or buttermilk

Cut Vertices and Semi-Inclusive Deep Inelastic Processes

Cut vertices, a generalization of matrix elements of local operators, are revisited, and an expansion in terms of minimally subtracted cut vertices is formulated. An extension of the formalism to deal with semi-inclusive deep inelastic processes in the target fragmentation region is explicitly constructed. The problem of factorization is discussed in detail.Comment: LaTex2e, 24 pages including 17 postscript figure

Potatoes as a Feed for Fattening Pigs

Many farmers of South Dakota who engage in the production of potatoes as a cash or market crop oftentimes have large quantities of cull or unmarketable potatoes at their disposal. In such cases much interest is manifested in the value of potatoes as a feed for livestock. Although potatoes have often been used for such purposes, very little experimental data is available for showing the feeding value of potatoes or the best method of utilizing them in rations for farm animals. In the early studies made to determine the feeding value of potatoes, no mention is made of the use of any protein supplement and since the use of tankage or some other protein supplement is considered necessary in the use of carbohydrate feeds for hogs in order to secure maximum gains in weight as well as economy of production, these earlier trials do not always answer all questions raised by hog growers. In order to obtain further information on the value of potatoes as a feed for growing and fattening pigs, four trials have been conducted since May 18, 1923, which are reported in this bulleti