A trial was conducted to determine the total rumen degradable protein intake (RDPI) required to maximise the digestible organic matter intake (DOMI) of beef cows consuming low quality grass hay from the northern variation of Cymbopogon–Themeda pasture type. Thirty-five pregnant…
This study aimed to compare two methods of excreta collection: the traditional, total method and a partial method using indigestible neutral detergent fibre (iNDF) as an internal marker for determining the metabolism coefficients of nutrients and energetic value of the…
The goal of this research was to evaluate the nutritive value of full-fat de-hulled sunflower seeds (DHSS) in feeding broiler chickens. Three experiments were conducted. Experiment 1 determined the proximal analysis of DHSS, the essential amino acid content, and apparent…
The objective of this study was to evaluate the effects of various geometric mean diameters (GMDs) of particles of corn, pelleted soybean meal and a corn-soy mixture in the proportion of 70% and 30%, respectively, on the nutritional value of…
Shrimp waste meal (SWM) is a by-product from the processing of shrimp for human consumption. The value of SMW in feeding poultry is not well documented. The objective of this study was to determine the energy value and optimal inclusion…
The objective of this research was to evaluate the effect of sow age on apparent total tract digestibility of nutrients and the concentration of metabolizable energy in the diet. The experiment was carried out on 20 gestating sows, divided into…
The effect on production performance of a synthetic or natural antioxidant and lipid saturation in the finishing diets of lambs was investigated. The four dietary treatments consisted of the same basal diet (187 g CP, 355 g NDF, and 71…
Estimation of indigestible neutral detergent fibre (iNDF) is necessary for accurate and precise predictions of feed energy values and potential microbial protein from digested NDF in the rumen. Due to lengthy laboratory procedures, iNDF has been estimated using the formula…
When least-cost diets, based on metabolizable energy (ME) values are formulated one assumes that the ME values allocated are additive, so that the sum of the individual ME values will represent the ME value of the diet. An experiment was…
The apparent and true metabolizable energy concentrations of 22 cultivars of sorghum grains, differing in their tannic ac id content, were determined by feeding samples of the different varieties to adult roosters. A highly significant negative correlation was found to…
Thirteen feed ingredients, representative of those used in the feeding of poultry and pigs in South Africa, were assayed for apparent and true metabolizable energy content (AME and TME), with at least 60 determinations being made on each ingredient. The…
The present study was conducted to determine the effects of feeding diets containing two levels of metabolizable energy (12.13 or 11.72 MJ ME/kg) and two different fat sources (sunflower- and fish-oil) with or without supplemental L-carnitine (0 or 50 mg/kg…
