Effect of ruminal lactic acid-utilizing bacteria on adaptation of cattle to high-energy rations.
Heifers, unadapted to a concentrate ration, were intraruminally inoculated (1 dose) with cultures of ruminal lactic acid-utilizing bacteria or with ruminal fluid from a steer adapted to a concentrate ration. Inoculation with cultures (1 L) of Selenomonas ruminantium or Megasphaera elsdenii did not produce better average daily weight gains or feed efficiency of heifers fed a high-energy ration for 21 days, if these values were compared with the performance of noninoculated heifers. Average daily weight gain and feed efficiency of heifers inoculated with 1 L of Peptococcus asaccharolyticus culture or with 1 L of adapted ruminal fluid and fed a high-energy ration for 21 days were better if these values were compared with the performance of noninoculated heifers.
D000821:Animal Feed; D000818:Animals; D001419:Bacteria / Q000378:metabolism*; D001835:Body Weight; D002417:Cattle / Q000378:metabolism*; D005260:Female; D006089:Gram-Negative Anaerobic Bacteria / Q000378:metabolism; D007773:Lactates / Q000378:metabolism*; D010460:Peptococcus / Q000378:metabolism; D012417:Rumen / Q000382:microbiology*
D007773:Lactates