Evaluation of different commercial processing methods on the nutritional value of poulty byproduct meal. Poultry byproduct meal consisting of 5 volumes of feathers, 2 volumes of offal and 1 volume of blood, was processed in three different ways and evaluated…
The oestrous cycles of Karakul ewes were synchronized during both the breeding (February) and non breeding season (October) using either whole or halved sponges, in combination with either subcutaneous or intravenous administration of PMSG. At the time of sponge withdrawal,…
Seasonal changes in semen volume and quality in the Angora ram were investigated. Semen was collected by means of an artificial vagina and criteria such as ejaculate volume, semen pH, sperm concentration, sperm motility, percentage live and normal sperm and…
To determine the influence of age of ewe on reproductive performance and the age specific death rate in the Dohne Merino, data from 1 310 individual lambings accumulated between 1975 and 1980, were used. The reproductive performance of the Dohne…
To determine the influence of the age of the ewe on characteristics such as body mass, greasy fleece mass, clean fleece mass, fibre diameter and staple length, the data obtained from 500 ewes born between 1970 and 1979 were used…
Eighteen beef heifers, representing the Bos taurus (Shorthorn), Bos indicus (Afrikaner) and intermediate (Bonsmara) types, were confined to a pen with 4,6 m2 floor space per heifer. A similar number of heifers on veld grazing served as controls. Blood samples…
From a game farming point of view, the impala is quantitatively the most important animal in the Bushveld areas of South Africa. However very little published data are available on the productive capacity of this animal. In a long-term study…
In the Karakul sheep of Southern Africa four major pelt types can be identified, namely pipe curl, developed shallow curl, shallow curl and watersilk types. A study of the foetal skin was undertaken to determine whether histological differences do exist…
A condition of unknown aetiology, known as 'the wet sheep carcass syndrome' has led to the loss of about R500 000 as a result of the condemnation and trimming of carcasses, during the past 2 years. An affected carcass has…
Estimating phosphorus intake in grazing sheep is difficult since hand-picked samples of forage do not represent actual intake. Results showed that faecal P did reflect dietary P levels. A minimum of 30 sheep should be sampled to obtain an error…
The physio-chemistry and endocrinology of bone growth was studied in rats housed under different temperature conditions. Bone lengths did not change significantly but bone widths and densities became significantly smaller in rats kept at 34 °C.The depression of bone alkaline…
The aqueous ammoniation of wheat straw by urea, as affected by temperature and moisture level, was studied in a 4 x 2 x 6 factorial experiment. Treatments included temperatures of 4, 14, 24 and 35 °C, moisture levels of 250…
Rice-straw was ensiled with a 5-6% urea solution for 3 weeks before being fed. Cattle fed with urea-ensiled rice straw alone can maintain weight. However, to obtain a daily weight gain of 300-450 g in Holstein Friesian heifers (8-12 months…
Data of all the lambs born to the Elsenburg Dormer (n = 303) and SA Mutton Merino (n = 325) flocks during the 1977 and 1978 lambing seasons as well as their female relatives were used to study various aspects…
Data of all the ram lambs born to the Elsenburg Dormer (n = 144)and SA Mutton Merino (n = 166) flocks during the 1977 and 1978 lambing seasons as well as that of their female relatives were used to study…
A total of 37 first-calf cows and their calves, comprising 19 Drakensbergers and 18 Hereford x Simmentalers, were subjected to either normal or once-daily suckling for 15 days, commencing at either day 35 or 60 post-partum in a 2 x…
The influence of various factors on the occurrence of high ultimate pH values as an indication of dark, firm and dry (DFD) pork at a South African bacon factory. This survey was conducted to determine the occurrence of DFD meat…
Evaluation of different breed crosses in the development of a white·woolled mutton sheep: The Afrino. Owing to injudicious crossbreeding of non-wool led sheep with the Merino, a need originated for a breed which is free from kemp and coloured fibres…
Demographic data were collected on one privately owned stud herd each of the Bonsmara, Brahman and Drakensberger beef breeds, farmed extensively in different natural environments in the Republic of South Africa, to study the influence of herd age-group structure on…
