This experiment was undertaken to evaluate the effect of dietary level of artichoke (Cynara scolymus) on growth performance and immune response of broilers under heat stress (HS). Two hundred forty day-old broiler chicks (Ross, 308) were randomly assigned to one of four dietary treatments with four replicate pens per treatment (15 birds per pen) in a completely randomized design with a 2 × 4 fa...

For some years, work in this laboratory has been directed toward elucidation of the mechanism of selectivity of high-potassium (HK) and low-potassium (LK) sheep red cell membranes for Na + and K + (I-4). One recent approach has been to compare the ionic permeability of the intact ceil membranes with thin artificial bilayer membranes prepared from lipids extracted from these cells (5). It was fo...

A monoclonal antibody (mAb) to sheep red blood cells (SRBC), termed L180/1, is described that completely blocks rosette formation between SRBC and human or sheep T lymphocytes. L180/1 precipitated a minor glycoprotein of about approximately 42,000 mol wt from surface-labeled SRBC. This glycoprotein was partially affinity purified and found to block E rosette formation and to compete with anti-T...

The aim of this thesis was to study potential breeding strategies for indigenous livestock in Eastern and Southern Africa under low input production systems. The thesis covered a study of the status of supportive infrastructure for use of animal genetic resources. The case of Red Maasai sheep was studied as a model for design of strategies for improvement of an indigenous breed under threat. St...

This experiment was carried out on 8 ha of Panicum maximum cv. Tanzania pastures, with rotational grazing consisting of 7 days of occupation and 21 days of rest. Four treatments were evaluated: cattle grazing alone (BOV), sheep grazing alone (OVI), cattle and sheep grazing simultaneously (SIM) and cattle grazing followed by sheep (alternate - ALT). Twenty heifers and 30 male Santa Inês lambs we...

Congo red is a synthetic azo-dye dye with many industrial applications. The effluents containing azo dyes are causing several environmental hazards and thus should be treated prior to their discharge. The present work investigates the possible use of a novel microbial consortium from sheep compost for the decolorization of Congo red dye. The effect of different parameters including contact time...

2,4,6-Trinitro-3-methyl-phenol (trinitrocresol, H(+)TNC(-)) was found to inhibit anion and stimulate cation movements across the membranes of both high potassium (HK) and low potassium (LK) sheep red blood cells. The concentration of TNC(-) required to inhibit SO(4) (-) and Cl(-) efflux (10(-5)-10(-3)M) was less than that required to increase Na(+) and K(+) leakage (10(-3)-10(-2)M). Both the in...

The serum of patients with rheumatoid arthritis contains a factor which causes agglutination of sensitized particulate bodies. This phenomenon has been demonstrated using sheep red cells (Waaler, 1940), collodion particles (Wallis, 1946), bacteria (Wager, 1950), polysterene latex particles (Singer and Plotz, 1956), and bentonite (Bozicevich, Bunim, Freund, and Ward, 1958). Rose, Ragan, Pearce, ...

The use of a sensitive and quantitative radioimmunoassay has enabled much finer dissection of the immunoglobulin-antibody profiles for an individual immune response. The kinetics of the response are considered in relation to the switch from IgM to IgG antibody production. In the domestic fowl, the kinetics of this switch varied with different antigens: whereas the response to a thymus-dependent...