Twenty South African Mutton Merino ewes, whose breeding season begin in October/November, and twenty crossbred Mutton Merino x Border Leicester ewes, whose breeding season begin in February, lambed during the second half of October. Half of each group suckled single…
Two hundred and eight Dormer ewes were included in an investigation into the effect on ewe fertility of dihydrostreptomycin antibiotic pessaries used with fluorogestone acetate-impregnated intravaginal (FGA) sponges for the synchronisation of oestrus and ovulation early in the breeding season…
Ovarian follicular activity increased sharply during the first 12 days of the luteal period, then ceased temporarily. Renewed follicle growth commenced towards pro-oestrus and terminated in ovulation. Although follicular activity decreased considerably during the period of anoestrus, relative large individual…
Relation between reproduction, production and behaviour in Angora goat does: Simple and partial correlation coefficients were determined between certain reproductive, productive and behavioural properties of Angora goat does kept under penned conditions for a period of four years. Highly significant…
Forty-eight 2½-year-old Merino rams were maintained in a specially insulated and ventilated enclosure at constant body weight on a constant nutritional level. Four were slaughtered each month and changes studied in the reproductive tract. Weight of epididymides, sperm motility and…
The relationship between the blood constituents of beef and dairy cattle and their age was investigated. The experimental group comprised 12 Afrikaner cows and their calves and 12 Friesian cows and their calves. Blood samples were drawn every fortnight and…
Details of techniques are presented of starch gel-, cellulose acetate - and immunoelectrophoresis which can be used to fractionate bovine muscle extract in such a way that the variation between individual samples can be detected qualitatively. The repeatability of results…
The occurrence of pale soft and exudative (PSE) muscle in bacon carcasses at two factories in South Africa At two bacon factories (A and B) in South Africa it was found in a survey that 8,6%(n=580) and 5,0%(n=1019) of the…
The amount of tissue damaged by bullet wounds and thus unfit for human consumption averaged 13,9% of the total carcass weight. When carcasses were grouped according to the locality hit by the bullet, it was found that shots through the…
Data on the carcass composition of mature male blesbok and kudu shot on two Northern Transvaal nature reserves are presented. The mean live weights of the 22 blesbok and 18 kudu examined were 73,4 kg and 236,3 kg, cold carcass…
