The aim of this research was to optimize emu oil production by manipulation of the dietary protein and energy ratios for greater fat accretion. The research was done at African Emu Ranch in Muldersdrift, Gauteng. Twenty-four, four to five months…
The effect of doe age, body weight and different management systems, as practiced in various Angora goat studs, on reproductive performance of does was investigated. The data used were collected from 2000 to 2004 on 12 Angora goat studs kept…
The proportion of eight fatty acids( 14:01, 6:0,1 6:1, 17:0, 17:1,18:01,8 :1and 18:2) was measured in the subcutaneous and kidney fat depots of five groups of Boer goat castrates which had been kept for 90 days on one of five…
The causal relationship between feed supply and fat and lean growth is critical to effective determination of optimum feed supply to growing pigs. Although excessive fatness may be controlled by reducing feed intake, in early growth appetite limitation is such…
Thirty six Holstein bull calves were divided into six groups to determine the effect of protein degradability and rumen inert fat supplementation in starter and finishing diets on nutrient digestibility and veal production. Calves received low (LD) or high (HD)…
The aim of this study was to evaluate the livestock production potential of Panicum maximum cv. Gatton cultivated under dry-land conditions and grazed at various stocking rates after various periods of re-growth. Treatments included a high stocking rate, fast rotation…
This study was conducted to assess the effect of greenleaf desmodium (Desmodium intortum) and sweet potato vine (Ipomoea batatus) supplementation of napier grass on dry matter intake, degradation and rumen fermentation in Friesian steers. Four fistulated steers were offered napier…
In a study on ostrich nutrition that spanned three breeding seasons, we assessed the effect of different energy and protein levels in the previous breeding season on production in the following breeding season. During the first breeding season, groups of…
In a study over two breeding seasons, we assessed the effect of dietary energy and protein levels on body mass, body condition and the production of fertile eggs by male ostriches. During the first season, birds were fed diets with…
The aim of this study was to measure the effects of stage of maturity and level of nitrogen (N) fertilisation of Panicum maximum cv. Gatton on intake, ruminal fermentation and the partial digestibility of organic matter (OM) in sheep grazing…
The aim of this study was to evaluate the effect of level of nitrogen (N) fertilisation and stage of maturity on certain qualitative parameters and dry matter (DM) production of Panicum maximum cv. Gatton during autumn. Treatments included seven levels…
Available information on the selenium (Se) status of grazing herbivores in South Africa is reviewed and collated in the form of a geographical distribution map. Marginal to acute Se deficiencies have been reported to occur in the Midlands region and…
Nutrition of breeding female birds can influence egg quality and is therefore extremely important for the development of the embryo and the successful hatching of a high quality chick. We investigated the effect of combining different levels of dietary energy…
Diets with three energy concentrations and five protein concentrations, structured in a 3 x 5 factorial experimental design, were formulated for the pre-starter (2 – 10 kg), starter (10 – 30 kg), grower (30 – 60 kg) and finisher phases…
Six ruminally-cannulated cows were assigned to a 2 x 3 changeover experiment with two periods to determine the effect of supplemental biotin on in vitro fibre fermentation kinetics. All the cows received the same basal diet but with different biotin…
Thirty two Döhne Merino lambs with an initial mean (± s.d.) body weight of 30.3 ± 2.5 kg were used in a randomised block experiment to determine the effect of an exogenous fibrolytic enzyme preparation (Abo 374) on body weight…
A study was conducted to determine the effect of dietary energy and protein concentrations in a 3 x 5 factorial experimental design on the performance of growing and finishing ostriches. Energy concentrations amounted to 8.5, 10.5 and 12.5 MJ ME/kg…
An experiment was conducted to compare body weight from birth to yearling age and pre-weaning and post-weaning growth rate of purebred Menz (MM), Corriedale x Menz (CM) and Awassi x Menz sheep (AM) under conditions where natural pastures were either…
Recent investigations into objectively measured attributes of commercial cashmere have differentiated cashmere produced in different regions of the world on the basis of cashmere fibre attributes. By plotting any two of mean fibre diameter, fibre curvature and resistance to compression,…
At two months of age, 48 Holstein-Friesland heifers were randomly allocated to four treatments comprising untreated wheat straw (WS), oven-ammoniated wheat straw (AWS), lucerne hay (LH) or oat hay (OH). Least cost nutrient balanced complete diets were formulated for heifers…
