Thiopeptin, thiopeptin-like antibiotics and penicillin were shown previously to be highly active in vitro against Streptococcus bovis, the microorganism believed to be responsible for the initiation of ruminal lactic acidosis. The purpose of this work was to determine the efficacy of these antibiotics in preventing lactic acidosis in lambs challenged by intraruminal administration of ground whe...

Homozygous grey Karakul lambs are born with a lethal genetic factor responsible for death at weaning age. When put on a high roughage diet under field conditions they develop distended, thin-walled rumens and sand impacted abomasa. Homozygous white Karakul lambs have a similar factor but survive for a longer period. Black Karakul lambs are not affected. The present study was undertaken to compa...

An experiment was conducted to study the effect of presence or absence of rumen ciliate protozoa on nutrient intake, its utilization, rate of body weight gain and feed conversion ef®ciency of lambs in post-weaning phase of growth. Forty ®ve weaned Malpura lambs, divided into three equal groups (G1, G2 and G3) were either defaunated by periodic dosing of sodium lauryl sulfate at the rate of 8 g/...

Twenty four Ossimi male lambs with an average live body weight 3.75± 0.25 kg and 7 days age were randomly assigned to two feeding groups. The first one was left to suckle their dam's until 12 weeks of age (natural rearing) and served as a control group, while the other was early weaned at 8 weeks old. Both the two groups were supported by a starter ration besides dam's milk until being weaned. ...

The study was conducted to evaluate the feed intake, digestibility, bodyweight change and carcass characteristics of Farta lambs fed Brachiaria (now: Urochloa) hybrid Mulato II natural pasture hays in various proportions as a basal diet supplemented with local concentrate mixture (CM). Twenty-five yearling male mean initial body weight 19.6±0.29 kg (mean±s.e.) were used feeding (90 days) digest...

The establishment of a fungal population composed of the main species usually found in ruminants in the rumen of gnotobiotic lambs did not significantly alter the in sacco digestibility of meat meal and soybean cake. The proteolytic activity of the rumen fluid against 14C-casein was not affected by the fungi. Therefore, these microorganisms probably do not play an important role in the degradat...

a total of 20 suckling sanjabi lambs, comprised of 10 males and 10 females with respective liveweights of 13.40±1.34 and 11.62±0.85 kg were employed in a 2x2 factorial experimental arrangement. the lambs within their sexes were grouped according to their liveweights and then randomly allocated to either one of the two treatments namely: ad libitum good quality alfalfa hay plus free suckling (co...

Twenty-four 35-day-old lambs were distributed to a completely randomized design with 3 treatments to study the effects of number of feeding buckets per pen on performance, haematology and behaviour indicators. Treatments consisted of 8 (T1), 4 (T2) or 2 (T3) feeding buckets/pen (8 lambs/pen). During the experiment, concentrate was fed at 08:30 in individual feeders. Daily dry matter intake (DMI...

1. The effects of defaunation of the rumen of lambs given low-protein-high-energy diets were studied using animals fed ad lib. a basal diet of sugar and oaten chaff which was supplemented with fish meal at various levels. These diets supported relatively large populations of protozoa in the rumen. 2. A nonyl phenol ethoxylate (15 g. Teric GN9:ICI Australian Ltd) given intraruminally, was shown ...