PMID- 7628963 OWN - NLM STAT- MEDLINE DCOM- 19950907 LR - 20190512 IS - 0021-8812 (Print) IS - 0021-8812 (Linking) VI - 73 IP - 4 DP - 1995 Apr TI - Influence of processing supplemental alfalfa on intake and digestion of dormant bluestem-range forage by steers. PG - 1187-95 AB - Four ruminally and duodenally fistulated, 2-yr-old Angus x Hereford steers (average initial BW = 370 kg) were used to evaluate the effect of method of processing supplemental alfalfa on intake and digestion of dormant bluestem-range forage (2.8% CP, 78% NDF). Treatments (4 x 4 Latin square) were 1) control, no supplement; 2) ground and pelleted alfalfa hay (PELLET; 21% CP, 37% NDF); 3) ground and pelleted dehydrated alfalfa (DEHY; 21% CP, 44% NDF); and 4) longstem alfalfa hay (HAY; 20% CP, 37% NDF). All supplements were from a single cutting of alfalfa and fed at .5% BW (as-fed basis). Supplementing steers with alfalfa increased (P < or = .07) bluestem forage OM intake (FOMI); total OM intake (TOMI); true ruminal OM digestibility; total tract OM digestibility (TTOMD); total N, microbial N, and nonammonia-nonmicrobial N (NANM) flows to the duodenum; ruminal OM and fluid fill; fluid dilution rates; dietary DE concentration; and ruminal total VFA and NH3 N concentrations. Because of the enhanced FOMI and TOMI associated with alfalfa supplementation and the concomitant improvement in TTOMD, digestible OM intake (DOMI) also increased (P < .01) when supplemental alfalfa was fed. Method of processing alfalfa had little impact on forage utilization, except FOMI (P = .11), TOMI (P = .10), and ruminal OM fill (P = .09) tended to be greater when supplemental alfalfa pellets were dehydrated. Similarly, processing method tended to alter the molar proportions of some minor VFA. In conclusion, alfalfa supplementation exerted a dramatic impact on utilization of low-quality forage.(ABSTRACT TRUNCATED AT 250 WORDS) FAU - Lintzenich, B A AU - Lintzenich BA AD - Department of Animal Sciences and Industry, Kansas State University, Manhattan 66506, USA. FAU - Vanzant, E S AU - Vanzant ES FAU - Cochran, R C AU - Cochran RC FAU - Beaty, J L AU - Beaty JL FAU - Brandt, R T Jr AU - Brandt RT Jr FAU - St Jean, G AU - St Jean G LA - eng PT - Journal Article PL - United States TA - J Anim Sci JT - Journal of animal science JID - 8003002 RN - 0 (Dietary Fiber) RN - N762921K75 (Nitrogen) SB - IM MH - Animal Feed/*standards MH - Animals MH - Cattle/metabolism/*physiology MH - Dietary Fiber/standards MH - Digestion/*physiology MH - Eating/*physiology MH - Food, Fortified MH - Male MH - Medicago sativa/*standards MH - Nitrogen/metabolism MH - *Poaceae MH - Rumen/microbiology/physiology EDAT- 1995/04/01 00:00 MHDA- 2001/03/28 10:01 CRDT- 1995/04/01 00:00 PHST- 1995/04/01 00:00 [pubmed] PHST- 2001/03/28 10:01 [medline] PHST- 1995/04/01 00:00 [entrez] AID - 10.2527/1995.7341187x [doi] PST - ppublish SO - J Anim Sci. 1995 Apr;73(4):1187-95. doi: 10.2527/1995.7341187x.