The objective of the study was to evaluate the effects of nutritional treatments, which differed after calving, on energy levels and sources on plasma metabolite profiles and live weight (LW) changes as an indication of the nutritional status in Holstein…
The objective of the study was to determine whether early post-partum dosing of Megasphaera elsdenii NCIMB 41125 (Me) will be beneficial to performance of high producing TMR-fed cows. Sixty multiparous Holstein cows were randomly allocated to four treatments (60% or…
It has been postulated that intake of feed mixtures will increase with increasing levels of concentrate until a peak is reached, whereafter it will decline again due to a lack of roughage to ensure a healthy rumen environment. Thus, it…
Growth of beef bulls has been studied with the aid of the three genotypes, the Afrikaner, Hereford and Simmentaler. The study ranged from birth to about 80 weeks of age. Half of the bull calves were raised on a concentrate…
The effect of roughages on the retention time of concentrates in the rumen was studied in cattle and sheep fed diets with different concentrate:roughage ratios. The organic matter retention times were calculated from the ratio, OM content in the rumen/mean…
The voluntary feed intake, body composition and efficiency (ME intake/energy retention) of 10 Dorper x Merino and 10 Afrino x Merino lambs were studied. The age of experimental animals ranged from weaning at approximately 120 days, to about 240 days…
The effect of starch fermentation in the rumen on the kinetics of roughage digestion, was studied using 12 sheep fed three roughages, viz. lucerne hay, maize cob leaves and wheat straw. The amount of starch infused per day was increased…
