"Experientia docet" - Experience is the best teacher
Some nutritional aspects of haemonchosis in experimentally infested lambs
Trials were conducted to study the effect of experimental haemonchosis on dry matter intake, live mass gain, dry matter digestibility and .nitrogen retention in sheep. Six and 9 month old lambs were infested with a pure strain of infective larvae…
Die invloed van verskillende peile energie en proteïen in die rantsoen op dragtige Karakoelooie en die pelse van hul pasgebore
The influence of different levels of energy and protein in the ration on pregnant karakul ewes and the pelts of their new born lambs Four groups of Karakul ewes were fed on the following four rations during pregnancy: High energy/high…
Vergelyking van twee metodes vir die bepaling van vitamien A
A comparison of two methods for the determination of vitamin a with special reference to the effects of storage time, storage temperature and light on the vitamin a content of plasma The destructive-irradiation technique and the Carr-Price method for the…
Time of ovulation in the Karakul ewe following synchronization of oestrus
The influence of medroxyprogesterone acetate impregnated intravaginal sponges and pregnant mare serum (PMSG) on the length of oestrus, the length of the interval from sponge withdrawal to the beginning of oestrus, the length of the interval from the beginning of…
Die gebruik van koggelramme om die aanvang van die teelseisoen by karakoelooie te vervroeg
One hundred Karakul ewes were divided according to age in two groups of 50 ewes each. Group 1 were stimulated by teaser rams, while Group 2 served as the controls. The body masses of the ewes in both groups were…
The effect of castration and plane of nutrition on growth and carcass composition of male rats
Forty rats were used to examine the effect of plane of nutrition on the growth response of rate to castration. Rats were offered 8, 12, 16 or 20 g/rat/day of a commercial small animal feed. Castration depressed feed consumption, growth…
The effect of orchidectomy and administration of testosterone propionate or nandrolone phenylpropionate to orchidectomised rats
Thirty·two rats were used to compare the effects of administration of 0,7 mg/d testosterone or nandrolone phenylpropionate with the effects of presence of functional testes on growth and body composition of rats fed 20 g/rat/d of a commercial ration or…
The effect of intramuscular implantation of testosterone on growth and carcass characteristics of Zebu steers
Sixteen animals were used to examine intramuscular implantation of 200 mg testosterone to steers which were fed in pens on one of two planes of nutrition. During the fifty-six days after first implantation body mass gains were 0.88 and 0.78…
Self feeding dairy cows: Free choice intakes of concentrates and hay ground through different sized screens
Twelve Friesland cows, in a Latin Square experimental design with 4 blocks and 42-day treatment periods, were subjected from the end of the second month of lactation, to 3 dietary treatments viz. a conventional system of roughage fed according to…
Chicken litter in fattening rations for cattle and sheep
Weaner calves were group-fed and weaner lambs were individually fed on control standard fattening rations (Treatment 1) and compared with rations containing 20% chicken litter (Treatment 2) and 40% chicken litter (Treatment 3). With weaner calves the difference between treatments…
