Abstract #T193
Section: Small Ruminant (posters)
Session: Small Ruminant 1
Format: Poster
Day/Time: Tuesday 7:30 AM–9:30 AM
Location: Exhibit Hall A
Session: Small Ruminant 1
Format: Poster
Day/Time: Tuesday 7:30 AM–9:30 AM
Location: Exhibit Hall A
# T193
Effect of a novel selenium product on growth performance of lambs.
K. Nedelkov1,2, X. Chen1,3, M. E. Young1, S. Räisänen1, C. F. A. Lage1,4, A. Melgar*1, M. T. Harper1, J. Oh1, E. H. Wall5, A. N. Hristov1, 1The Pennsylvania State University, University Park, PA, 2Faculty of Veterinary Medicine, Trakia University, Stara Zagora, Bulgaria, 3College of Pastoral Agriculture Science and Technology, Lanzhou University, Lanzhou, Gansu, China, 4Universidade Federal de Minas Gerais, Minas Gerais, Brazil, 5Pancosma, Geneva, Switzerland.
Key Words: selenium, growth performance, lamb
Effect of a novel selenium product on growth performance of lambs.
K. Nedelkov1,2, X. Chen1,3, M. E. Young1, S. Räisänen1, C. F. A. Lage1,4, A. Melgar*1, M. T. Harper1, J. Oh1, E. H. Wall5, A. N. Hristov1, 1The Pennsylvania State University, University Park, PA, 2Faculty of Veterinary Medicine, Trakia University, Stara Zagora, Bulgaria, 3College of Pastoral Agriculture Science and Technology, Lanzhou University, Lanzhou, Gansu, China, 4Universidade Federal de Minas Gerais, Minas Gerais, Brazil, 5Pancosma, Geneva, Switzerland.
The objective of this study was to investigate the bioavailability of a novel Se product (B-Traxim Se-11; Pancosma, Switzerland) and its effect on growth performance of lambs. Sixty lambs (Suffolk × Hampshire) were used in an 8-wk randomized complete block design experiment. Lambs were housed in 12 pens (5 lambs/pen) and pens were blocked based on lambs’ initial body weight (average 35.7 kg; SD = 4.15 kg). Pens within a block were randomly assigned to one of the following treatments (3 pens/treatment): basal diet supplemented with (1) sodium selenite providing 0.15 mg Se/kg dietary DM (NaSe); (2) B-Traxim Se providing 0.08 mg Se/kg DM (BTLow); (3) B-Traxim Se providing 0.15 mg Se/kg DM (BTHigh); and (4) selenized yeast providing 0.15 mg Se/kg DM (YST). The basal diet included 40% grass hay (offered ad libitum) and 60% concentrate feeds and a mineral premix without Se. Body weight of the lambs was recorded weekly and blood samples were collected from the jugular vein twice, at wks 4 and 8 of the experiment. Data were analyzed using the MIXED procedure of SAS (repeated measures for the production data) with pen as the experimental unit; block and block × treatment were random effects. Average daily gain tended to be lower (P = 0.06) for BTLow, compared with NaSe, BTHigh, and YST (263, 286, 275, and 298 g/d, respectively; SEM = 9.3). Dry matter intake and feed-to-gain ratio were not affected by treatment (P ≥ 0.09). Compared with NaSe and YST, Se concentration in blood plasma was decreased (P = 0.007) by BTLow and BTHigh (67.4, 70.4, 58.2, and 60.9 µg/L, respectively; SEM = 2.28). Se concentrations in feces were greater (P < 0.001; SEM = 21.7) for NaSe and BTHigh (498 and 489 µg/kg DM, respectively) than the groups supplemented with YST (356 µg/kg DM) and BTLow (309 µg/kg DM). Concentration of Se in urine was similar among treatments (P = 0.37; average 22.9 µg/L; SEM = 5.54). In this experiment, Se from B-Traxim had no effect on productive performance of lambs and, based on the plasma Se concentration and fecal excretion data, had similar or lower bioavailability than Se from sodium selenite and selenized yeast.
Key Words: selenium, growth performance, lamb
