The influence of supplemental alfalfa quality on the intake and utilization of low-quality roughages by beef cattle Public Deposited

http://ir.library.oregonstate.edu/concern/graduate_thesis_or_dissertations/9g54xm90w

Descriptions

Attribute NameValues
Creator
Abstract or Summary
  • Three experiments were conducted to evaluate the influence of quality of supplemental alfalfa quality on beef cattle consuming low-quality meadow grass (MG) roughages. Fifteen steers (250 kg) were assigned randomly to one of three treatments: 1) meadow grass (5.2% CP), no supplement (MNS); 2) meadow grass plus high quality alfalfa hay (AHS) (18.8% CP); and 3) meadow grass plus low quality alfalfa hay (ALS) (15.2% CP). Supplements were fed at 0.45% BW and 0.55 % BW respectively. Total DM intake was greater (P<.01) for alfalfa supplemented steers. Likewise intake of digestible DM, DM digestibility and ruminal ammonia levels were greater for alfalfa supplemented steers (P<.01). In Exp. 2; 96 gestating Hereford x Simmental cows (537 kg; body condition 4.86) were assigned to the same treatments as in Exp. 1. For d-0 to d-42 cows grazed on 19.1 ha of stockpiled MG (4539 kg/ha; 6.8% CP) whereas d-43 to d-84, cows received MG hay (5.2% CP). Results for the 84-d study indicated that supplemented cows gained more BW (P<.01), body condition (P<.01) and had heavier (P<.01) calf birth weights than MNS cows. In the first 42-d period supplemented cows gained 16.2 kg more BW than MNS cows (P<.01). Likewise, supplemented cows increased .24 BC more (P<.01) than MNS cows. The same trend was observed from d-42 to d-84, though ALS cows lost more BC (P<.01) than the AHS cows. In Exp. 3; 90 gestating Angus x Hereford cows (475 kg; body condition 4.59) were assigned to one of three supplemental treatments: 1) 16.1% CP alfalfa; 2) 17.8% CP alfalfa; 3) 20.0% CP alfalfa. The level of supplementation was 0.63%, 0.55%, and 0.50% of BW, respectively. The basal diet was baled MG hay (5.6% CP). Weight gain and BC change for the 84-d study displayed a quadratic response (P<.10). In conclusion, alfalfa hay is an effective way of increasing low-quality roughage DM intake and digestibility. However, alfalfa hay quality did not appear to dramatically effect BW, BC, and (or) calf birth weights, when fed on a isonitrogenous basis. (KEY WORDS: Beef cattle, Supplementation, Meadow Hay, Alfalfa Hay)
Resource Type
Date Available
Date Copyright
Date Issued
Degree Level
Degree Name
Degree Field
Degree Grantor
Commencement Year
Advisor
Committee Member
Academic Affiliation
Non-Academic Affiliation
Subject
Rights Statement
Peer Reviewed
Language
Digitization Specifications
  • File scanned at 300 ppi (Monochrome, 256 Grayscale) using Capture Perfect 3.0.82 on a Canon DR-9080C in PDF format. CVista PdfCompressor 4.0 was used for pdf compression and textual OCR.
Replaces
Additional Information
  • description.provenance : Submitted by Erin Clark (ecscannerosu@gmail.com) on 2012-10-05T20:00:20Z No. of bitstreams: 1 WederChristophE.pdf: 3686304 bytes, checksum: cea43246931f7acf2338d47588284d65 (MD5)
  • description.provenance : Approved for entry into archive by Patricia Black(patricia.black@oregonstate.edu) on 2012-10-05T20:43:44Z (GMT) No. of bitstreams: 1 WederChristophE.pdf: 3686304 bytes, checksum: cea43246931f7acf2338d47588284d65 (MD5)
  • description.provenance : Made available in DSpace on 2012-10-05T20:45:13Z (GMT). No. of bitstreams: 1 WederChristophE.pdf: 3686304 bytes, checksum: cea43246931f7acf2338d47588284d65 (MD5) Previous issue date: 1996-05-10
  • description.provenance : Approved for entry into archive by Patricia Black(patricia.black@oregonstate.edu) on 2012-10-05T20:45:13Z (GMT) No. of bitstreams: 1 WederChristophE.pdf: 3686304 bytes, checksum: cea43246931f7acf2338d47588284d65 (MD5)

Relationships

In Administrative Set:
Last modified: 08/15/2017

Downloadable Content

Download PDF
Citations:

EndNote | Zotero | Mendeley

Items