Browsing Masters Degrees (Animal and Poultry Science) by Issue Date
Now showing items 1-20 of 112
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Nutritional restriction of the growth rate of broiler breeder replacement pullets.
(1971)No abstract available. -
Suckling behaviour and fertility in beef cows on pasture.
(1990)The suckling behaviour of 66 Hereford and Simmentaler cows was studied. The average frequency of suckling in 24 hours was four times, and the average duration of each suckling bout was 10 minutes. Suckling events were ... -
Performance of Hereford and Holstein heifers on kikuyu pasture (Pennisetum clandestinum), using n-alkanes for determination of digestibility and dry matter intake.
(1995)Kikuyu pasture (Pennisetum clandestinum) is potentially the most important source of roughage used to feed dairy heifers in summer in KwaZulu-Natal. It is commonly believed that on kikuyu pasture beef breed females ... -
The use of the N-alkane technique for measuring herbage dry matter intake in horses.
(1995)The use of n-alkanes as indigestible markers for the estimation of herbage dry matter intake in grazing ruminants, is reported to have significant advantages over other markers used for this purpose (Dove and Mayes, ... -
The effect of different methods of controlling urolithiasis on ovine mineral metabolism.
(1995)The widespread use of high-energy, low roughage diets among feedlot sheep has lead to the development of several production diseases (Bide et al., 1973). One of the least easily identifiable is urolithiasis, yet it is ... -
Capacitation of Nguni semen for in vitro fertilization of bovine oocytes.
(1995)In vitro maturation, fertilization and culture is a technique which is increasingly utilised in the animal science industry for embryo production. However, optimal conditions for in vitro maturation, fertilization and ... -
Attempts to improve the yield of bovine blastocysts by incorporating insulin, selenium and transferrin in the In Vitro system.
(1996)To produce an embryo via in vitro maturation, in vitro fertilization and in vitro culture methods it is vital to obtain consistent results and at the same time a large number of bias to cysts from the immature oocytes ... -
Some factors affecting weaning weights of calves.
(1996)A mixed model study was carried out on the field data records of 9798 Simmmental and 1725 Hereford calves born during the period 1992 to 1994, and obtained from the Animal Improvement Institute, Irene. The records were ... -
The long and short term effects of Leucaena leucocephala on ram fertility.
(2000)No abstract available. -
The evaluation of the growth parameters of six South African commercial crossbred pig genotypes.
(2002)Simulation modeling is an active part of animal nutrition. These complex programs rely on mathematical functions to predict the performance of an animal. The Gompertz equation is a simple, but accurate function that fits ... -
Family poultry studies in KwaZulu-Natal.
(2002)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 ... -
The effect of feed type and diet quality on kinetics of digestion : the degradation properties of certain protein supplements, and the effect of concentrate supplementation and basal roughage quality on eating behaviour and particle passage from the rumen of sheep.
(2002)The unique anatomical structure of the ruminant animals' digestive tract allows them to convert forages containing high levels of fibre into the valuable products of meat, milk and wool. At the same time, an interdependent ... -
Influence of composition and storage conditions on diet quality and productivity of broiler chickens.
(2003)Two experiments were conducted to assess the effects of varying storage temperature and relative humidity (RH) on feed quality and nutritive value of such diets when fed to broiler chickens. The diets used in experiment ... -
Effect of urea-ammoniation of dietary roughage and concentrate ratio on ruminal microbial activity in Jersey cows.
(2003)The effect of untreated roughages on digestibility and rumen fill of the gut was reviewed as physical mechanism influencing the regulation of roughage intake. The review of literature also focused on identifying factors ... -
Dairy constraint analysis in Eritrea, with special emphasis on Asmara and surrounding dairy farms.
(2003)The overall objective of the study reported in this thesis was to assess the existing situation of the dairy sub-sector in Eritrea with special emphasis on the Asmara and surrounding dairy farms. The specific objective ... -
Liver abscesses and performance in feedlot cattle as influenced by dietary roughage level and tylosin inclusion.
(2003)The focal interest of this study was the problem of liver abscesses that occurs in intensively fed beef cattle. The literature on metabolic disorders and diseases associated with feeding high concentrate diets to beef ... -
A production function analysis of fresh milk production in the highlands of Eritrea.
(2004)This study presents a production function analysis of fresh milk producers in the Highlands of Eritrea for the year 2002, dealing with the most important factors of production. Most dairy farmers are located in the Central ... -
The effect of dietary protein and energy on feed intake and performance of laying hens.
(2005)This study was designed to devise a method by which the optimum combination of dietary energy and protein could be found that maximises the margin over feeding cost in an egg production enterprise. It was necessary to ... -
Factors influencing the rates of lipid deposition and withdrawal in growing pigs.
(2005)This study was conducted to determine the influence of factors on the efficiency of protein utilization and the rate of lipid deposition and withdrawal in growing pigs. Two experiments were conducted in total. The first ...