Levels of sheep and goat production, as well as aspects of the distribution of ownership of pigs and poultry, in three livestock-producing areas of Ciskei are discussed. Findings show low levels of production and reproduction and high mortality rates in…
The effect of treatment on the chemical composition and in vitro organic matter digestibility (IVOMD) of wheat, oat and barley straw and oat hay at 25 °C was investigated in a 4x3x2x5 factorial experiment. Apart from the four roughages, urea…
Urea ammoniation of wheat, oat and barley straw and oat hay. 2. Utilization by sheep. Wheat, oat and barley straw, as well as oat hay were ammoniated, using 55 g urea and 400 g moisture kg·1 roughage for a treatment…
Effect of prolonged treatment of wheat straw with urea or a urea/caustic soda combination during baling on the nutritional value thereof for sheep. A study was undertaken to investigate the treatment of wheat straw with urea or urea plus caustic…
Supplementary salt (NaCI) and crude protein (CP) were provided to young Merino wethers grazing native pasture. Twenty-eight wethers were divided into 7 groups and given the following supplements daily via rumen cannulae: 0, 5 (Control), 15 and 30 g NaCl;…
While grazing native pasture, seven groups of 4 young Merino wethers received the following supplements daily via rumen cannulae: 0, 5 (Control), 15 and 30 g salt (NaCl); and 5, 15 and 30 g NaCl + 20 g crude protein…
In one experiment the effects of casein in the abomasum was compared to isonitrogenous quantities of casein or urea in the rumen. In another two experiments the effects of casein in the rumen or abomasum were compared to isocaloric quantities…
Relationship between performance measurements and auction prices of Veld Merino rams. Merino rams for veld ram clubs are received at the age of six months and then raised on natural grazing. At the age of one year, with…
A low quality Eragrostis curvula hay was supplemented with 30 or 80 g casein in the rumen with or without 70 g casein in the abomasum, and a medium quality E. curvula hay with 30 g casein in the rumen…
A review based on recent research is presented on the production of Sanga (Nguni) cattle in South and South West Africa . The high calving rate of Sanga cattle (89,6%) compared to an average of 77,4% of four other breeds…
Effect of substituting maize meal with rolled and whole maize respectively, in a finishing diet for beef cattle containing 20% maize silage (dry matter basis), was investigated. The inclusion of whole maize in a diet without silage was also investigated.…
Growth was more rapid among grass carp, Ctenopharyngodon idella Val., fed on cabbage, Brassica spp., than among those fed on kikuyu grass, Pennisetum spp. - despite the lower protein content of cabbage (11,9% vs 20,3%). The relative condition factor of…
Fermentation in the rumen, measured by a steady state in vivo method, was compared to in sacco estimates obtained by different methods of calculation. These methods included a first-order model calculated over 24 h, a first-order…
The possible upgrading of meat of mature does to an acceptable product through processing was investigated using chemical, physical and sensory evaluation techniques. Twelve goat does (six-tooth) were slaughtered and processed into vienna sausages and cured and smoked buttocks. These…
An experiment was conducted to determine whether sugar could successfully be incorporated into feeds for ducklings in the period 0 to 7 weeks of age. Five dietary treatments, with sugar content ranging from 0 to 400 g kg-1 were fed…
Laboratory investigation into optimal conditions for the treatment of wheat straw with urea and caustic soda, exclusively or in combination. The effect of treating wheat straw with 55 g urea and 45 g caustic soda (exclusively and in combination)…
Progesterone levels during sexual development in spring-born Karakul ewe lambs. Four spring-born Karakul ewe lambs were pen fed to first lambing. Blood samples for analysis of progesterone concentration in peripheral plasma were taken on Mondays, Wednesdays and Fridays from these…
Effect of intravaginal progestagens on oestrus activity of Mutton Merino ewes. Seven groups of SA Mutton Merino ewes, representing seven different stages in the oestrous cycle i.e., day 0 (ovulation), 2, 4, 6, 8, 10 and 12, were treated…
Evaluation of the Finnish Landrace x Merino and Merino as ewe lines in crosses with five ram lines. Survival and growth. Finnish Landrace x Merino (F x M) and Merino ewes were evaluated against each other as dam lines in…
The effect of active immunization against the ovarian steroid, androstenedione, on the reproductive performance of Merino ewes was investigated. Although a significant (P<0,01) increase of 19% in fecundity and 20,3% in lambing rate was obtained by treatment, the eventual number…
