Comparison of high and low tannin sorghum grain with low quality roughage for feeding ruminants Public Deposited

http://ir.library.oregonstate.edu/concern/graduate_thesis_or_dissertations/t722hd609

Descriptions

Attribute NameValues
Creator
Abstract or Summary
  • Two studies were conducted to compare lamb feedlot performance and digestibility of nutrients by lambs fed rations containing bird-resistant and bird-susceptible sorghum grain with 20 or 40% tall fescue hay as a source of roughage. Four rations were fed ad libitum on the performance study and at 80% of ad libitum on the digestibility trial. All rations included cottonseed meal, animal fat, urea and limestone. Rations 1, 2, 3 and 4 contained 39.2, 66.9, 39.3 and 67.0% grain sorghum and 40.9, 20.6, 40.8 and 20.6% hay, respectively. Results indicated lambs on high roughage treatments with depression in dry matter (-4.8%), organic matter (-3.6%), crude protein (-4.9%), ether extract (-1.6%), nitrogen-free-extract (-1.5%) and energy (-2.3%) digestibility and decreased copper excretion (-10.7%). CWC (202.66%), cellulose (18.00%), acid detergent fiber (24.6%) and total ash (11.2%) digestibility and NR (11.3%) indicated some improvement in high roughage diets. When digestible energy was considered on the basis of concentrate consumed daily, it showed an increase of 31.2% over the low roughage treatments. Lambs on high tannin treatments showed depression in dry matter (-2.3%), organic matter (-3.7%0, crude protein (-5.6%), nitrogen-free-extract (-2.3%), energy (-3.7%), CWC (9.1%) and cell contents (-3.3%) digestibility, and in nitrogen retention (-1.7%) and total phosphorus (-6.2%) excretion. Ether extract (4.6%), ADF (12.7%), total ash (41.7%, p<.01) and cellulose (16.8%) digestibility showed improvement, while copper (9.7%) excretion increased. Lambs receiving high roughage rations experienced some improvement in feed intake per pen (7.9%), ADG (3.7%), YG (8.8%), percent kidney fat (15.2%, p<.01), quality grade (.4%) and loin eye area (3.6%). Leg conformation score (LCS), fat thickness (FT) and dressing percent were depressed by 1.0, 18.0 and 6.8% compared to low roughage treatments. Lambs on the high tannin treatments experienced some improvement in FI (4.6%), YG (4.9%), kidney fat (7.0%), loin eye area (7.5%) and dressing percent (2.9%). Leg conformation score seemed to be depressed by the high tannin level (-3.8%). Lambs on high roughage treatments had a poorer FE ratio (7.8) than those consuming the low roughage ration (7.5). A similar trend was observed with high tannin (8.1) as compared to low tannin treatments (7.4). Cost per kilogram of gain in liveweight or carcass was higher (18.1 and 26.9%, respectively) for lambs on high roughage treatments than those consuming low roughage rations. Observations on high tannin versus low tannin rations showed similar trends (7.2 and 4.2%, respectively). High roughage diets seemed to give an increase in TVFA (13.5%), NH3-N (67.7%) and acetate:propionate ratio (59.7%). Increased amounts of TVFA (13.5%) and NH3-N (13.7%) and a wider acetate:propionate ratio (4.2%) were observed in the high tannin diets.
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) using ScandAll PRO 1.8.1 on a Fi-6670 in PDF format. CVista PdfCompressor 4.0 was used for pdf compression and textual OCR.
Replaces
Additional Information
  • description.provenance : Approved for entry into archive by Patricia Black(patricia.black@oregonstate.edu) on 2013-09-05T19:43:38Z (GMT) No. of bitstreams: 1 WanyamaJustinM1981.pdf: 429012 bytes, checksum: ac598ee55b592712f33f63d666baa5a6 (MD5)
  • description.provenance : Submitted by Katy Davis (kdscannerosu@gmail.com) on 2013-09-05T15:03:07Z No. of bitstreams: 1 WanyamaJustinM1981.pdf: 429012 bytes, checksum: ac598ee55b592712f33f63d666baa5a6 (MD5)
  • description.provenance : Approved for entry into archive by Patricia Black(patricia.black@oregonstate.edu) on 2013-09-10T19:27:32Z (GMT) No. of bitstreams: 1 WanyamaJustinM1981.pdf: 429012 bytes, checksum: ac598ee55b592712f33f63d666baa5a6 (MD5)
  • description.provenance : Made available in DSpace on 2013-09-10T19:27:32Z (GMT). No. of bitstreams: 1 WanyamaJustinM1981.pdf: 429012 bytes, checksum: ac598ee55b592712f33f63d666baa5a6 (MD5) Previous issue date: 1980-12-18

Relationships

Parents:

This work has no parents.

Last modified

Downloadable Content

Download PDF

Items