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The aim of the study was to estimate the influence of β-1,3/1,6-D-glucan applied in feed on non-specific cellular immunity in lambs. The study examined twenty six 21-28 day old lambs in two groups: I - control and II - experimental (7 rams and 6 ewes in each group). The animals were kept under identical zoohygienic and nutritional conditions. Lambs from group I were fed a basal control diet and lambs from group II were fed a diet containing β-1,3/1,6-D-glucan, at doses of 80 mg/kg/day. Blood was taken from the control and experimental groups before the lambs were fed a diet containing β-1,3/1,6-D-glucan, and 15, 30 and 60 days after administration of the diet. The respiratory burst activity (RBA) and potential killing activity (PKA) of blood phagocytes and proliferative response of blood lymphocytes (MTT) stimulated by mitogens concanavalin A (ConA) and lipopolisaccharide (LPS) were examined. The results indicated that when β-1,3/1,6-D-glucan was applied to food it statistically significantly increased the blood phagocyte and lymphocyte activity in the lambs until the end of experiment, compared to the control group.
The aim of the present study was to determine the effect of β-1.3/1.6-D-glucan added to feed on meat performance traits and non-specific humoral immunity parameters in lambs. The experiment was performed on 26 suckling Kamieniecka lambs, divided into two equal groups, control (I) and experimental (II), each composed of 7 males and 6 females. Over a 60-day experimental period the concentrate for lambs of the experimental group was supplemented with β-1.3/1.6-D-glucan. The following meat performance traits were determined: body weight, daily gains, growth rate, measurements of a transverse slice of musculus longissimus, thickness of skin with the fat layer and thickness of fat over the loin eye. The serum levels of non-specific humoral immunity parameters, i.e. lysozyme activity, gamma globulins and total protein, were also determined. The results indicated that dietary supplementation with β-1.3/1.6-D-glucan positively affected both meat performance and non-specific humoral defense mechanisms in suckling lambs. This was confirmed by a faster growth rate, better development of the longissimus muscle, as well as higher lysozyme activity and elevated levels of gamma globulins.
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