Now showing items 1-10 of 33
The effects of dietary lysine, crude protein, energy and feed allocation on broiler breeder hen performance.
This study was conducted to investigate the effects of varying levels of dietary lysine and feed allocation, on the performance of female broiler breeders. In trial 1, 900 Cobb breeders from 26 to 45 weeks of age were ...
Biological control of the common house fly Musca domestica L. in horse stables, using Bacillus thuringiensis serovar israelensis and Beauveria bassiana.
House flies (Musca domestica L.) are common pests affecting horses and their owners. Control of house flies in stable yards is currently based on the use of pesticides. However, the development of resistance by these flies ...
The effect of photoperiod and feeding time on broiler breeder eggshell quality and oviposition time.
This study was conducted to determine the effect of photoperiod and feeding time on oviposition time and eggshell quality of broiler breeders. Five experiments were conducted in total. The effect of photoperiod on ...
Studies of phosphorus digestibility with broilers.
No abstract available.
The constraining effect of feed bulk on the voluntary feed intake of laying hens.
1. Two experiments were designed to determine a suitable method of measuring and predicting feed bulk, such that this could be used to predict when the feed intake of a laying hen would be constrained by feed bulk. 2. ...
An evaluation of effective energy in the formulation of diets for laying hens.
Emmans (1994) introduced a concept of energy utilisation applied across species, in which a heat increment in feeding is considered to be linearly related to five measurable quantities. Subtracting the heat increment of ...
An investigation into growth in Jersey, Holstein and Hereford heifers on kikuyu pasture (Pennisetum clandestinum) using N-Alkanes to estimate intake and ruminal outflow rate.
The experiment was designed to investigate why dairy heifers perform poorly on kikuyu pasture compared to a beef breed like the Hereford. The main assumption was that the lower growth rate in dairy breeds was due to low ...
The use of choice feeding and mixture experiments to evaluate protein sources used in broiler feeds.
No abstract available.
An investigation of factors influencing rate of lay, egg weight and embryonic growth in broiler breeder hens.
The laying performance of broiler breeder hens is characteristically poor. Of the eggs that are produced, a large proportion are rejected before setting because they are either too small or excessively big, and of the ...
Family poultry studies in KwaZulu-Natal.
This work was in two parts, the first part was an on-farm survey of family poultry production and the second study was on-station research which investigated the replacement of maize by bread waste in layer diets. The ...