Effects of chromium propionate supplementation on growth performance, serum traits and immune response in weaned pigs
2004
Lien, T.F. | Lin, K.J. | Yang, K.S.
This study investigated the effects of chromium propionate on growth performance, serum traits and immune response in weaned pigs. Twenty-four 4wk-old crossbred weanling pigs (initial body weight about 9.52+-0.48kg were randomly alloted into one of two groups, a control group (basal diet), chromium propionate group (diet supplemented with 200 ug kg~1 (ppb) of chromium propionate). This experiment was conducted over nine weeks. Escherichia Coli lipopolysaccharide (LPS) 100ug kg`1 BW was used as the stress-inducing agent in the middle (4 wks) periods. The experimental results indicated that chromium propionate had no effect on growth performance (P0.05). Chromium propionate supplementation reduced the percentage of LDL+VLDL (low and very low density lipoprotein) and increased HDL (high-density lipoprotein), but did not affect other serum traits. Pigs supplemented with chromium propionate had higher antibody titers specific for sheep red blood cells (SRBC) and serum total globulin relative to the control during the final period (P0.05). A challenge with LPS increased white blood cells in the chromium propionate groups (P0.05). This suggests that chromium propionate supplementation benefited the weaned pigs in lipoprotein and immune response.
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