Title page for ETD etd-052799-165923


Type of Document Master's Thesis
Author Mundie, Benjamin Scott
URN etd-052799-165923
Title Nutritional Value of Warm- and Cool-Season Grasses for Ruminants
Degree Master of Science
Department Animal and Poultry Sciences
Advisory Committee
Advisor Name Title
Fontenot, Joseph P. Committee Chair
Abaye, Azenegashe Ozzie Committee Member
Hall, John B. Committee Member
Peterson, Paul R. Committee Member
Keywords
  • Orchardgrass
  • Digestibility
  • Tall Fescue
  • Caucasian Bluestem
  • Bermudagrass
  • Ruminants
Date of Defense 1999-05-12
Availability restricted
Abstract
A metabolism trial was conducted to compare the nutritional value of: 1)’Quickstand’ bermudagrass [Cynodon dactylon (L.) Pers.], 2)caucasian bluestem [Bothriochloa caucasia (Trin.) C.E. Hubb], 3)tall fescue (Festuca arundinacea Schreb.), and 4)orchardgrass (Dactylis glomerata L.). The warm-season grasses (bermudagrass and bluestem) were higher (P < .01) in fiber components than the cool-season grasses (tall fescue and orchardgrass). Bluestem was lower (P < .001) in CP, hemicellulose, and ash, and higher in NDF (P < .001), ADF (P < .001), cellulose (P < .001), and lignin (P < .01) than bermudagrass. The warm-season grasses were lower in the apparent digestibility of DM (P < .001), NDF (P < .01), ADF (P < .05), cellulose (P < .05), and hemicellulose (P < .01) than cool-season grasses. Apparent digestibility of NDF (P < .001), ADF (P < .001), cellulose (P < .01), and hemicellulose (P < .01) was higher for bluestem than bermudagrass. Fescue was higher (P < .001) in apparent digestibility of DM and CP and lower (P < .01) in apparent digestibility of NDF, ADF, cellulose, and hemicellulose than orchardgrass. Lambs fed bluestem had lower (P < .05) N retention than those fed bermudagrass, when expressed as g/d. Lambs fed fescue had higher (P < .001) N retention, than those fed orchardgrass. When expressed as a percent of intake or absorption, N retention values were similar among treatments. The results of this study suggest that cool-season grasses are of higher nutritional value than warm-season grasses.
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