"Experientia docet" - Experience is the best teacher
Effects of vitrification and post-thawing interval on the cytoskeleton and subsequent fertilization rate of in vitro derived bov
Vitrification may alter the cytoskeleton (microtubule, meiotic spindle, microfilament, etc.) and the subsequent fertilization rate of in vitro derived bovine oocytes. This study was conducted to evaluate the effect of vitrification and post-thawing incubation periods on the cytoskeleton and fertilization…
An investigation into the possibility of a Genotype by Environmental interaction for milk production in the South African Jersey
The possibility of a genotype by environment interaction for milk production in the South African Jersey population was investigated by grouping 37687 first lactation records completed between 1985 and 1999 into different production or environmental levels. The dataset consisted of…
A developing country perspective on recent developments in animal breeding and intellectual property rights
Animal breeding and genetics have changed markedly, resembling those that have already taken place in the plant sector. These changes are going to be larger with sequenced genomes, transgenic livestock and cloned animals. Animal scientists have now started to protect…
Supplementary heat requirements when brooding tom turkey poults
In this study, the supplementary heat required when brooding turkey poults in winter and summer in the Kahramanmaras region of Turkey was determined using a heat and humidity balance method for a naturally ventilated house with a capacity of 6500…
Effect of summer climatic conditions on different heat tolerance indicators in primiparous Friesian and Jersey cows
The effect of climatic conditions during summer on different heat tolerance indicators was determined in Friesian and Jersey cows which were kept in open camps with no protection against solar radiation. A complete diet (15.0% CP and 10.8 MJ ME/kg)…
Reproductive performance of commercial Merino, Dohne Merino and SA Mutton Merino flocks in the Southern Cape
Data of 23 189 Merino ewes (8 farms), 7692 Dohne Merino ewes (3 farms) and 2399 SA Mutton Merino ewes (1 farm) were recorded for the 1988-1991 lambing seasons. The udders of ewes present at lamb marking were inspected to…
Studies on the chemical composition and digestible energy content of South African grain sorghum
The experiment was conducted (i) to compare the chemical and physical composition of grain sorghum produced at different locations, (ii) to compare the digestible energy (DE) content of different grain sorghum cultivars produced at different locations, and (iii) to evaluate…
A nutritional evaluation of Geotrichum candidum grown on an industrial effluent
The nutritional value of Geotrichum candidum, produced on an acid effluent from Sasol, was determined. Analysis of G. candidum revealed (on an air-dry basis) a crude protein content of 53.4% and a true protein content of 38.8% with a favourable…
Regional differences in growth parameters between two impala populations
The origin of differences in growth parameters between impala from the Mara Research Station (Mara) and the Messina Experimental Farm (Messina) was investigated. Impala from both localities were harvested, and body weights (BW) and cold carcass weights (CCW) were measured…
Fermentation in the rumen of sheep fed Atriplex nummularia cv. De Kock supplemented with incremental levels of barley and maize
The aim of this study was to investigate the effect of two carbohydrate sources, barley and maize, on the ruminal fermentation of Atriplex nummularia cv. De Kock fed to sheep. Barley was used as a source of rapid fermentable carbohydrates…
Sensory characteristics of meat and composition of carcass fat from sheep fed diets containing various levels of broiler litter
The effect of high levels of broiler litter in the diets of sheep on sensory characteristics and composition of fat in mutton was evaluated. Thirty-six South African Mutton Merino wethers weighing ca. 41 kg were randomly allocated to four treatment…
In vitro digestibility and in situ degradability of avocado meal and macadamia waste products in sheep
Waste products from the avocado (avocado meal, AM) and macadamia (macadamia oilcake, MOC and macadamia chips, MCH) processing industries have the potential to be included in animal diets, depending on their nutritive value. Avocado meal consisted of oil-extracted avocados unsuitable…
Heritability estimates and correlations between production and reproductive traits in Lori-Bakhtiari sheep in Iran
Heritablities and correlations were estimated between lamb body weight at different ages and reproductive traits in the Lori-Bakhtiari sheep breed. Data and pedigree information for Lori-Bakhtiari sheep used in this study were 5826 records of body weight of lambs from…
Mapping QTL for fatty acid composition that segregates between the Japanese Black and Limousin cattle breeds (Short communicatio
The objective of this study was to search for quantitative trait loci (QTL) that segregate between Japanese Black and Limousin cattle breeds and affect relative amounts of saturated (SFA), mono-unsaturated (MUFA) and poly-unsaturated (PUFA) fatty acids. Six F1 Japanese Black-Limousin…
Genetic parameter estimates for growth traits of Large White pigs in Kenya
Variance components and genetic parameter were estimated for piglet growth traits of Large White (LW) pigs managed under intensive production systems in Kenya. Data were on piglet performance of LW pigs born between 1982 to 1996. Growth performance traits of…
Growth and carcass characteristics of male dairy calves on a yeast culture-supplemented diet
This experiment was carried out to study the effect of the inclusion of a yeast culture in the diet of feeder dairy calves on their growth and carcass characteristics. Thirty male Friesian calves were randomly allocated to two groups of…
Genetic variation of indigenous chicken breeds in China and a Recessive White breed using AFLP fingerprinting
Amplified fragment length polymorphism (AFLP) using six marker combinations were applied to detect genetic variation and phylo genetic relationships among 12 indigenous Chinese chicken breeds and a Recessive White chicken breed introduced from France. The DNA was pooled for each…
Effects of different raising systems on colour and quality characteristics of Turkish Pekin duck meats
The current trial was conducted to determine the influence of different raising systems on the meat quality properties of male Turkish Pekin ducks. Ninety male ducklings were randomly allocated to three experimental groups: an animal-fish integrated farming group (IG), a…
