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The investigation of voluntary feed intake (VFI) and nitrogen retention (NRET) during parasitic infections in small ruminants is the central theme of this thesis. An attempt was made to examine the effects of trypanosomiasis on feed intake, digestibility, nitrogen retention and animal products. I...
Approximately 25 % of the world’s land surface support about 20 million households or about 180–200 million people in pastoral areas (Degen, 2007). Pastoral production systems are low external input systems that Kaufmann (2007) characterizes as probabilistic ra...
Results of a 2-year study on goats and sheep in northern Burkina Faso are reported. In both goats and sheep, females comprised more than 75% of flock numbers. Intervals between parturitions in goats were 312 days overall but were significantly affected by the season of the previous birth: in shee...
Knowledge of the extent of variation due to non-genetic factors is vital to eliminate environmental effects and improve the efficiency of selection in sheep. Two indigenous breeds, the Udah and the Yankasa and crosses of these with exotic breeds were evaluated for lamb weights at birth, 3 months ...
The effects of two rations containing either cottonseed cake or blood meal on the growth performance and carcass characteristics were studied. The experiment involved 24 Shugor male lambs, about four months old, fattened for 63 days. The two rations, iscaloric and isonitrogenous, contained, among...
To compare body weight losses and post-partum anoestrus, twelve local Burundian ewes and twelve goats which had lambed or kidded at the middle of the dry season were followed from parturition until eight months. Each dam was weighed every month and bled three times a week to assess the ovarian ac...
A genetic control flock of Merino sheep consisting of 160 ewes and 16 rams was established in 1969 at the Tygerhoek Experimental Farm near Riviersonderend in the South Western Districts of South Africa. In 1976 it was extended to 200 ewes and 20 rams. Ewes are replaced by their second ewe lamb wh...
Eighty-nine ewe lambs comprising 36 Shugor, 29 Dubasi and 24 Watish sheep weaned 16 weeks following birth experienced their first oestrus at an average age of 206 days. Winter-born ewe lambs attained sexual matrurity at a lower age than those lambs, which were born during the summer. The mean val...
Data are presented on the performance of Yankasa sheep and Red Sokoto goats kept by Fulani pastoralistst in a traditional agropastoral system in north Nigeria. Some comparisons are made with data from other studies in Nigeria and various West African countries. It is evident that small ruminant, ...
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