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…
Five models were studied for goodness of fit to in sacco organic matter disappearance. Except for the first-order model, all the other models showed an accurate and unbiased fit, although in some cases this was achieved by unrealistic parameter estimates…
A comparison of broiler performances on milled and unmilled sorghum-based diets: This study was undertaken to determine whether it is essential to mill sorghum before it is included in broiler diets. Remarkable savings can be achieved if unmilled sorghum could…
Untreated, sodium hydroxide- and formaldehyde-treated birdproof grain sorghum as energy source in broiler diets: A comparative study was undertaken with broilers to evaluate the nutritional value of sodium hydroxide (NaOH)- and formaldehyde(HCHO)-treated birdproof sorghum as the primary energy source in…
Influence or maize supplementation and stocking rate on production or ewes and lambs on winter sourveld: Body mass changes of lactating ewes and lambs with different types of maize supplements on winter sourveld were investigated over three consecutive seasons in…
A group of 82 genetically lean and 90 obese Landrace pigs was allotted to three dietary treatments with lysine concentrations of 1,22 (T1), 1,02 (T2) and 0,83% (T3), corresponding concentrations of crude protein (CP) of 19,7, 16,8 and 13,7% and…
The experiment was conducted to (i) determine the excretion pattern of an indigestible marker for sheep, (ii) compare three different techniques used to determine intake, (iii) determine the crude protein (CP) and digestible organic matter (DOM) intake of wethers and…
In a two-year study, the value of crop residues of lupins, dry beans, soybeans, sunflower, sorghum and maize for wintering sheep was evaluated. The amounts of residues arid weeds present at the start and end of grazing were estimated by…
Dohne Merino wethers grazed crop residues of lupins, dry beans, soybeans, sunflower, sorghum and maize at a stocking rate of 10 wethers / ha. Three wethers in every treatment were oesophageally fistulated and during sampling periods the other seven were…
