Maize silage, stover and ripe maize plants were compared with one another in respect to dry matter yield and dry matter losses. These feeds were also used in metabolism and production studies. Whereas 8,63% of the original harvested dry matter…
A comparison between maize and grain sorghum as a concentrate source in fattening diets for beef cattle. The influence of replacing 0%, 50% and 100% of the maize meal (Pioneer 432) with bird resistant (SSK52) and non-bird resistant (NK 283)…
An evaluation of soy-beans as a supplement for the wintering of woolled sheep on sour veld. The value of soy-beans as a supplement for woolled sheep on winter veld was investigated in the south-eastern Transvaal Highveld. Döhne merino ewes were…
The suitability of trichloroacetic acid as a protein precipitant for the determination of 'true protein' in feed samples was investigated. The TCA method compared well with the cupric hydroxide method recommended by the Association of Official Agricultural Chemists.
Efficiency or early selection or Merino rams on a selection index. Production traits of 196 unselected young Merino rams were measured at two consecutive shearings with six months' wool growth, at the age of 12 and 18 months. The correlation…
Meat and bone meal (MBM) and oyster shell meal (OSM) were supplemented to a basal diet (LMS), either alone or in combination, in order to assess the dietary influences of those complementary Ca sources on performance and egg quality of…
Pedigree records, maintained from 1978 to 2005 at the Oudtshoorn Research Farm, South Africa, of 40 074 birds of a pair-breeding ostrich flock were used to estimate the effective number of founders (fe), the effective number of ancestors (fa), the…
The effects of human imprinting and foster parenting by adult ostriches on the survival and growth performance of ostrich chicks were compared to conventional chick-rearing practices in two separate experiments. In the first experiment, the growth rate and survival of…
This study was performed to determine the effects of a natural yeast-based feed ingredient (natural carbohydrate fraction (NCF) isolated from a specific strain of yeast) on broiler chickens, and to examine its mode of action. The trial was set up…
This study evaluated the influence of administering different levels of L-arginine into eggs of 0-day-old Japanese quail embryos. On day 0 of incubation, 480 eggs (120 for each treatment group) were injected with 0% arginine (C group), 1% arginine (T1),…
Diet composition has been suggested as a factor that influences the variability of responses when Saccharomyces cerevisiae (SC) is fed to ruminant animals. Diets based on lucerne hay (462 g/kg DM) and maize silage (488 g/kg DM) were fed to…
This study was conducted to compare the withdrawal or reduction of the vitamin premix (VP) from broiler diets at between days 29 and 42 of age on the characteristics of leg bones of the broilers in a battery cage (Trial…
The study tested the performance of intact male pigs from a selected genetic line subjected to differing feeding regimens and penning conditions. The trial was a 2 x 3 x 2 x 3 factorial design, consisting of winter and summer…
The FAO publication, Livestock’s Long Shadow, indicated that livestock is responsible for 18% of the world’s greenhouse gas production thereby creating the perception that livestock is a major cause of global warming. Methane (CH4) makes up 16% of total world…
A total of 896 maize grain samples were obtained from all the maize silos throughout South Africa (231 silos) and analysed for selenium (Se) content. This information was used to compile a regional distribution map of the Se content of…
By knowing the milk urea nitrogen (MUN) content of dairy cows, the efficiency of dietary nitrogen utilization can be improved. The main objectives of this study were to identify and quantify environmental factors affecting MUN in South African Holstein cows…
A study was conducted to evaluate the effects of a rumen-specific, active live yeast (Saccharomyces cerevisiae; SC CNCM I-1077), alone or in combination with an ionophore (lasalocid-Na) in standard feedlot diets, on production performance and carcass quality of lambs. Sixty…
The present study was conducted to observe the efficacy of water treatment on sorghum grain and to determine its optimum inclusion in broiler diets. Sorghum grain was treated with water and dried. Seven isoenergetic and isonitrogenous diets were prepared, using…
