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In Vitro And In Vivo Analyses Of Hays Of Switchgrass Strains Selected For High And Low In Vitro Dry Matter Digestibility

K. Vogel, R. Britton, H. J. Gorz, F. A. Haskins
Published 1984 · Biology

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In a previous report the progress made in altering the in vitro dry matter digestibility (lVDMD) of switchgrass (Panicum oir­ gatum L.) in one cycle of divergent selection was described. In this study, the detergent system of analyses was used in an at­ tempt to determine what plant constituents had been altered by the selection for IVDMD. Hays from five switchgrass strains differing in IVDMD harvested over a 3-year period were ana­ lyzed for protein content, neutral detergent fiber (NDF), acid detergent fiber (ADF), ash, and lignin. Although there were dif­ ferences (p :s 0.05) among strains for IVDMD as determined by two different procedures (with and without additional N), there were no differences among strains for ADF, ash, lignin, and protein. The strains ranked the same with the two IVDMD procedures but the IVDMD·N (with additional N) test averaged 6.7 percentage points higher in digestibility. There were small differences (p -s 0.1) among strains for NDF in 2 of the 3 years. The strain with the highest IVDMD had the lowest NDF, sug­ gesting that, in part, the improved IVDMD was due to a decrease in the cell wall component of the harvested forage. Hays ofthree of these strains, high-IVDMD PC, low-IVDMD PC, and 'Path· finder' from the 1980 harvest were ground and fed to sheep to compare in vivo and in vitro digestibilities. After grinding, the hayshad IVDMD-N values of49.9,45.5, and 46.7%, respectively. There were no differences among strains in the sheep feeding trial for in vivo digestibility, dry matter intake, and fiber di­ gestibility. The in vivo digestibilities for these strains were: high­ IVDMDPC 50.4%, low-IVDMD PC 49.0%, and Pathfinder 50.8%. In contrast to a previous report in the literature, the IVDMD­ N values were generally similar to in vivo digestibilities for switchgrass hays. Parameters of the conventional detergent sys­ tem of analyses, while useful in identifying factors responsible for changes in digestibility of switchgrass hays, would probably be of little value as selection criteria in a breeding program. Because of the large number of animals required to obtain sta­ tistical significance in in vivo digestibility studies, the IVDMD procedure would be preferable in studies in which breeding ma­ terial is being evaluated and small differences in digestibility are expected.
This paper references
Relationship of forage - evaluation techniques to the intake and digestibility of tropical grasses
W. R. Windham (1981)
10.2135/CROPSCI1981.0011183X002100010011X
Divergent Selection for In Vitro Dry Matter Digestibility in Switchgrass1
K. Vogel (1981)
10.1042/BJ0430099
Studies on ruminant saliva. 1. The composition and output of sheep's saliva.
E. Mcdougall (1948)
10.2134/AGRONJ1980.00021962007200060021X
Forage Quality Evaluation of Two Warm−Season Range Grasses Using Laboratory and Animal Measurements1
J. L. Griffin (1980)
10.2527/JAS1980.505952X
Forage Characteristics Related to Intake, Digestibility and Gain by Ruminants
H. Lippke (1980)
10.1111/J.1365-2494.1969.TB01076.X
SOURCES OF VARIATION IN THE IN VITRO DIGESTIBILITY OF TROPICAL GRASSES
M. N. Mcleod (1969)
Site and rate of tissue digestion in leaves of C3, C., and C3/C
D. E. Akin (1983)
10.1111/J.1365-2494.1963.TB00335.X
A TWO-STAGE TECHNIQUE FOR THE IN VITRO DIGESTION OF FORAGE CROPS
J. A. Tilley (1963)
10.2135/CROPSCI1983.0011183X002300010042X
Site and Rate of Tissue Digestion in Leaves of C3, C4, and C3/C4 Intermediate Panicum Species1
D. E. Akin (1983)
10.2135/CROPSCI1983.0011183X002300010041X
Influence of Leaf Anatomy on the Dry Matter Digestibility of C3, C4, and C3/C4 Intermediate Types of Panicum Species1
J. Wilson (1983)
Nutrient intake and mineral adequacy of subtropical grasses
R. L. Reid (1982)
Relationship of forage-evaluation techniques to the intake and digestibility of tropical grasses
S.M.I. Abrams (1981)
The composition and output of sheep's saliva.
E. Mcdougall (1948)
Forage fiber analyses (apparatus, reagents, prcedures, and some applications)
H. Goering (1970)



This paper is referenced by
10.1590/S1516-35982009001300017
Improving grassland profitability in the Mid-continental USA by breeding for improved forage digestibility: lessons learned and applications to South American grasslands
K. Vogel (2009)
10.2527/JAS1989.6761418X
Grazing selectivity and in vivo digestibility of switchgrass strains selected for differing digestibility.
M. Ward (1989)
10.1016/J.ANIFEEDSCI.2012.02.008
Forage quality of native warm-season grasses in response to nitrogen fertilization and harvest date
N. Waramit (2012)
10.2527/JAS1988.6692239X
Forage Quality and Performance of Yearlings Grazing Switchgrass Strains Selected for Differing Digestibility
B. Anderson (1988)
10.4141/CJPS90-131
LOW-TEMPERATURE TOLERANCE OF SWITCHGRASS (Panicum virgatum L.)
H. Hope (1990)
10.2135/CSSASPECPUB15.C7
Breeding Grasses for the Future
K. Vogel (1989)
10.1002/JSFA.2740590206
Lignification of switchgrass (Panicum virgatum) and big bluestem (Andropogon gerardii) plant parts during maturation and its effect on fibre degradability
H. Jung (1992)
10.1007/978-1-4471-2903-5_7
Biochemical and thermochemical conversion of switchgrass to biofuels
V. Balan (2012)
10.1111/J.1365-2494.1994.TB02004.X
Cell wall composition and degradability of stem tissue from lucerne divergently selected for lignin and in vitro dry‐matter disappearance
H. Jung (1994)
10.2135/CSSASPECPUB15.C3
Progress and Benefits to Humanity from Breeding Warm-Season Forage Grasses
G. Burton (1989)
10.3198/JPR2015.11.0070CRG
Registration of NE Trailblazer C-1, NE Trailblazer C0, NE Trailblazer C2, NE Trailblazer C3, NE Trailblazer C4, and NE Trailblazer C5 Switchgrass Germplasms
K. Vogel (2016)
10.2134/1994.FORAGEQUALITY.C22
Alteration of Plants via Genetics and Plant Breeding
K. Vogel (1994)
10.2135/CROPSCI2002.1857
Winter Survival in Switchgrass Populations Bred for High IVDMD
K. Vogel (2002)
Method of pollination and heritability for seedling vigor in switchgrass
H. Leon (2005)
10.2135/CSSASPECPUB15.C6
Breeding Forage Grasses to Maximize Animal Performance
G. Marten (2015)
10.31274/RTD-180813-9028
Bidirectional selection for dry-matter digestibility in orchardgrass
Mohammad Jurial Rind Baloch (1989)
10.1002/JSFA.2740600305
Hemicellulosic cell wall carbohydrate monomer composition in Panicum amarum, P. amarulum and P virgatum accessions
J. Ruiter (1992)
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