Document Detail


Determinants of forage quality in Pensacola bahiagrass and Mott elephantgrass.
MedLine Citation:
PMID:  8392049     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
Our objective was to determine animal responses and forage characteristics that could explain the greater forage quality of 'Mott' dwarf elephantgrass (Pennisetum purpureum Schum.) than that of 'Pensacola' bahiagrass (Paspalum notatum Flugge). Both grasses were harvested after 5 wk of regrowth in June and September. Sheep fed Mott hays had greater (P = .001) voluntary intake of digestible OM (DOM) than did those fed Pensacola, but voluntary intake of ash-free NDF (NDFa) did not differ (P = .21) between grasses. When hays were fed at equal NDFa intakes, sheep fed Mott chewed at a greater (P = .002) rate during eating, spent less (P = .028) time ruminating per unit OM intake, and had smaller (P = .006) prefeeding digesta pools of total and indigestible NDFa. Mott hays had greater N and K and smaller NDFa concentrations. Mott had greater (P = .001) epidermis and smaller (P = .001) sclerenchyma proportions in leaf blades, and leaf epidermis of Mott was more digestible (P = .011) in vitro. For both grasses, hays harvested in June had greater (P = .011) voluntary intake of DOM and shorter (P = .082) mean retention time of small ruminal digesta particles (< 1.18 mm) than did those harvested in September. Within grasses, there were no seasonal differences in NDFa concentration in hay, or in leaf anatomy. A less fibrous leaf structure and a more readily digested leaf epidermis may have accounted for the greater DOM intake of Mott than of Pensacola, but the greater DOM intake of hays harvested in June than of those harvested in September was not explained by measured forage characteristics.
Authors:
J A Flores; J E Moore; L E Sollenberg
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Publication Detail:
Type:  Journal Article; Research Support, U.S. Gov't, Non-P.H.S.    
Journal Detail:
Title:  Journal of animal science     Volume:  71     ISSN:  0021-8812     ISO Abbreviation:  J. Anim. Sci.     Publication Date:  1993 Jun 
Date Detail:
Created Date:  1993-08-10     Completed Date:  1993-08-10     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  8003002     Medline TA:  J Anim Sci     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  1606-14     Citation Subset:  IM    
Affiliation:
Department of Animal Science, University of Florida, Gainesville 32611-0900.
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MeSH Terms
Descriptor/Qualifier:
Animal Feed / standards*
Animals
Dietary Fiber / analysis,  metabolism
Digestion*
Eating*
Lignin / analysis
Male
Mastication
Nutritive Value
Poaceae / anatomy & histology,  chemistry*,  metabolism
Reticulum / metabolism
Rumen / metabolism
Seasons
Sheep / physiology*
Chemical
Reg. No./Substance:
9005-53-2/Lignin

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


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