RT Journal T1 PRODUCTIVE RESPONSE AND PROGESTERONE CONCENTRATION IN HOLSTEIN HEIFERS SUPPLEMENTED WITH SACCHAROMYCES CEREVISIAE1077 OR SACCHAROMYCES BOULARDII1079 A1 U. Coronel-Robles A1 M.E. Ortega-Cerrilla A1 G.D. Mendoza-Martínez A1 P. Zetina-Córdoba A1 M.T.S. Torres-Esqueda A1 G. Munguía-Ameca A1 M.V. Teco-Jácome JF Journal of Animal and Plant Sciences JO JAPS SN 1018-7081 VO 26 IS 1 SP 17 OP 24 YR 2016 FD 2016/02/01 DO DOI NA AB

The objective of this study was to determine the effect of supplementating 10 g/animal/day of Saccharomyces cerevisiae1077 (SC1077) or Saccharomyces boulardii1079(SB1079) on dry matter intake (DMI), daily weight gain (DWG), feed efficiency (F:G), in vivo digestibility, pH, and rumen ammonia nitrogen (NH3-N) concentration in rumen liquor, as well as progesterone concentration (P4). Twenty four, six-month old, Holstein heifers were randomly assigned to three treatments (n=8): (T1: Control; T2:10 g/animal/day of SC1077; T3:10 g/animal/day of SB1079). Samples of rumen liquor were taken at 60, 120 and 180 d of the experiment to determine pH and ammonia nitrogen. Determination of in vivo digestibility of DM, NDF, ADF and N was carried out 14 days before the of 60, 120, and 180 d periods. Blood samples were taken to measure P4 concentration. No differences (P > 0.05) were found for DMI, DWG, and F:G from supplementing with S. cerevisiae. Similarly, no differences were reported for rumen pH and rumen NH3-N concentration were not affected (P > 0.05), and in vivo digestibility of DM, NDF, ADF and N (P > 0.05). The P4 concentration was similar (P > 0.05) among the treatments. It is concluded that supplementing Holstein heifers with SC1077 and SB1079 did not improve heifers performance nor modified the progesterone concentration.

K1 Saccharomyces, replacement heifers, digestibility PB Pakistan Agricultural Scientists Forum LK https://thejaps.org.pk/AbstractView.aspx?mid=2016-JAPS-03