"Experientia docet" - Experience is the best teacher
Die gebruik van seleksie-indeks by Merinoskape
The use of selection indices for merino sheep: An index selection scheme for Merino sheep is proposed. It is recommended that for the preliminary selection of young replacement material all available animals should be classed subjectively for breed characteristics and…
The inheritance of hair length in Karakul sheep with special reference to its relationship with skin thickness and hair thicknes
The inheritance of measured hair length was studied in a population of 1595 karakul lambs sired by 100 rams. An estimate of 0,35 (10,08)was obtained for heritability (h2) of hair length. Phenotypic and genetic correlations between measured values of hair…
Relationship between production characteristics and breeding potential of 25-month old extensively managed Bonsmara bulls
The aim of the study was to determine if the breeding potential of 25-month old Bonsmara beef bulls could be predicted from production characteristics. Forty-one Bonsmara bulls were included in an on-farm performance test (also known as the Phase D…
Reconception in grade and pedigree Africander cows of different sizes – postpartum factors influencing reconception
The influence of postpartum mass, body mass gain from calving to the end of the bulling season and month of calving was studied in 1 975 grade and 440 pedigree Africander cows that were classified into six size categories according…
Resultate verkry met KI by Afrikaner-en Jerseykoeie onder ekstensiewe toestande in Noord.Kaapland
Results obtained with AI in Africander and Jersey cows under extensive conditions in the Northern Cape AI was practised in a herd of approximately 270Africander and 75 Jersey cattle over a five year period at Vaalharts Research Station. During the…
The effect of the protein solubility of fish meal and the roughage content of the supplemented diet on its digestion by sheep
The effect of formaldehyde treatment on the solubility of fish meal in M.NaC1 solution was investigated. Subsequently the variation in solubility of fish meals obtained from various sources was examined. A series of metabolic trials was then conducted with Merino…
The influence of live weight on the voluntary intake of low quality roughage by merino sheep and its implications for successful
In experiments with adult Merino wethers, where wheaten straw was supplemented with an urea-containing mixture, the following was found: (a) Poor quality roughage may maintain the body weight of Merino sheep provided that the organic matter digestibility is not lower…
The incidence of foetal dwarfism in shorthorn cattle in the subtropics
Results are reported on the incidence of foetal dwarfism in purebred Shorthorn cattle in the subtropics. One third of the calves born weighed less than 18 kg and half weighed less than 22,75 kg. The weight of dwarfs ranged from…
The effect of castration and vasectomy on male Zebus which grazed veld under two systems of management
Thirty-six animals were used to examine the effect of castration and vasectomy on performance of bulls which grazed veld under two systems of management. During the trial (which lasted from 15th May, 1964 to 28th December, 1966) rates of bodymass…
Die bepaling van spier, vet en been in karkasse en snitte van jong osse
The carcasses of eighteen steers with an average age of 16 months (beef, dairy and crossbred types) were used to determine the part-whole relationships in the composition of cuts and carcasses. The prime rib cut which is a very practical…
Seisoenale veranderinge in chemiese samestelling van volwasse blesbokramme (Damaliscus dorcas phillipsi) van die Van Riebeeck na
Seasonal changes in chemical composition of adult blesbok (Damaliscus dorcas phillips/) males from the Van Riebeeck nature reserve Whole body analyses were carried out on mature blesbok males over the four seasons of the year. A clear seasonal pattern emerged…
Beskrywing van tegnieke en chemiese analises van skaapliggame en foute daaraan verbonde
A description of procedures and associated errors for chemical analyses of whole bodies of sheep. As part of a comparative slaughter experiment, whole bodies of 24 lambs were analyzed for dry matter, nitrogen, ether-extract, ash and energy content. A large…
