Changes in Forage Nutritive Value among Vertical Strata of a Cool-Season Grass Canopy

Crop Science ◽  
2014 ◽  
Vol 54 (6) ◽  
pp. 2837-2845 ◽  
Author(s):  
Renata L. G. Nave ◽  
R. Mark Sulc ◽  
David J. Barker ◽  
Normand St-Pierre
Keyword(s):  
Nutritive Value ◽  
Cool Season ◽  
Cool Season Grass

Nutritive Value of Virginia Wildrye, a Cool-Season Grass Native to the Northeast USA

Crop Science ◽  
2009 ◽  
Vol 49 (6) ◽  
pp. 2416-2416
Author(s):  
Matt A. Sanderson ◽  
R. Howard Skinner ◽  
Martin van der Grinten ◽  
Jennifer Kujawski
Keyword(s):  
Nutritive Value ◽  
Cool Season ◽  
Northeast Usa ◽  
Cool Season Grass

Relationships of Forage Nutritive Value to Cool‐Season Grass Canopy Characteristics

Crop Science ◽  
2013 ◽  
Vol 53 (1) ◽  
pp. 341-348 ◽  
Author(s):  
Renata La Guardia Nave ◽  
R. Mark Sulc ◽  
David J. Barker
Keyword(s):  
Nutritive Value ◽  
Cool Season ◽  
Cool Season Grass

Nutritive Value of Virginia Wildrye, a Cool‐Season Grass Native to the Northeast USA

Crop Science ◽  
2004 ◽  
Vol 44 (4) ◽  
pp. 1385-1390 ◽  
Author(s):  
Matt A. Sanderson ◽  
R. Howard Skinner ◽  
Martin Grinten ◽  
Jennifer Kujawski
Keyword(s):  
Nutritive Value ◽  
Cool Season ◽  
Northeast Usa ◽  
Cool Season Grass

scholarly journals Seeding Rate Effects on Forage Mass and Vegetation Dynamics of Cool-Season Grass Sod Interseeded with Sorghum-Sudangrass

Agronomy ◽  
2021 ◽  
Vol 11 (12) ◽  
pp. 2449
Author(s):  
John A. Guretzky ◽  
Daren D. Redfearn
Keyword(s):  
Vegetation Dynamics ◽  
Nutritive Value ◽  
Perennial Grass ◽  
Warm Season ◽  
Residual Effects ◽  
Control Treatment ◽  
Seeding Rate ◽  
Cool Season ◽  
Sorghum Sudangrass ◽  
Cool Season Grass

Interseeding annual warm-season grasses into perennial cool-season grasses has the potential to increase summer forage mass and nutritive value. Knowledge of how seeding rate affects annual warm-season grass establishment, forage mass, and vegetation dynamics remains limited. From 2016–2017, we conducted a field experiment evaluating the effects of seeding rates on sorghum-sudangrass (Sorghum bicolor × S. bicolor var. sudanense) density and forage mass and on the frequency of occurrence of plant species in cool-season grass sod in Lincoln, NE. The experiment had a completely randomized design consisting of six replicates of four seeding rates [0, 14, 28, and 35 kg pure live seed (PLS) ha−1] in sod mowed at a 2.5-cm height and one unseeded, non-mowed control treatment. Sorghum-sudangrass establishment increased with seeding rate from an average of 20 to 45 plants m−2 as the seeding rate increased from 14 to 35 kg PLS ha−1. Forage mass depended on a seeding rate × harvest interaction, showing positive linear and cubic responses to seeding rate in consecutive harvests at 45 and 90 d after interseeding. To increase forage mass in perennial cool-season grass sod, producers should interseed sorghum-sudangrass with at least 28 kg PLS ha−1. One-time seedings into cool-season, perennial grass sod have no residual effects on subsequent forage mass and vegetation dynamics.

scholarly journals PSXI-42 Assessment of the inclusion of prairie clovers in native cool-season grass pastures on the nutritive value of forage using in vitro ruminal incubation.

2018 ◽  
Vol 96 (suppl_3) ◽  
pp. 226-227
Author(s):  
Y Wang ◽  
G Gresham ◽  
K Peng ◽  
A Chaves ◽  
T McAllister ◽  
...  
Keyword(s):  
Nutritive Value ◽  
Cool Season ◽  
Cool Season Grass

PSXIII-2 Effect of varying proportions of cereal rye and turnip on ruminal fermentation and methane output through in vitro batch culture

2021 ◽  
Vol 99 (Supplement_3) ◽  
pp. 461-461
Author(s):  
Jordan L Cox-O’Neill ◽  
Vivek Fellner ◽  
Alan J Franluebbers ◽  
Deidre D Harmon ◽  
Matt H Poore ◽  
...  
Keyword(s):  
Methane Production ◽  
Dry Matter ◽  
Ruminal Fermentation ◽  
Variable Response ◽  
Cool Season ◽  
Cereal Rye ◽  
Freeze Dried ◽  
Main Effect ◽  
Cool Season Grass

Abstract Ruminant animal performance has been variable in studies grazing annual cool-season grass and brassica monocultures and mixtures. There is little understanding of the fermentation mechanisms causing variation. The aim of this study was to determine apparent dry matter (DM) digestibility, methane, and volatile fatty acid (VFA) concentration from different proportions of cereal rye (Secale cereal; R) and turnip (Brassica rapa L.; T) (0R:100T, 40R:60T, 60R:40T, and 100R:0T) via in vitro batch fermentation. Freeze-dried forage samples from an integrated crop-livestock study was assembled into the four treatments with a 50:50 leaf to root ratio for turnip. Measurements were made following a 48 hr fermentation with 2:1 buffer and ruminal fluid inoculum. Data were analyzed using Mixed Procedure of SAS with batch (replicate) and treatment (main effect) in the model; differences were declared at P ≤ 0.05, with tendencies declared at > 0.05 but < 0.10. Rumen apparent DM digestibility (26.8%; overall mean) was not different among treatments. Methane production was less (P < 0.01) with inclusion of turnip ranging from 774 nmol/ml for 0R:100T to 1416 nmol/ml for 100R:0T. Total VFA production, acetate to propionate ratio, acetate, and valerate were not affected by forage treatments (117 mM, 1.45, 39.84 mol/100 mol, and 7.86 mol/100 mol, respectively; overall mean). Propionate, isobutyrate, and isovalerate concentrations were greater and butyrate concentration less with greater (P < 0.01) proportions of rye in the mixture. No effect of R:T ratio on digestibility or total VFA production along with the observed differences in individual VFA concentration do not explain variable response in grazing animals. Additionally, methane production results indicate that grazing turnips could potentially reduce methane production and thus reduce ruminant livestock’s contribution to greenhouse gas emissions.

scholarly journals Epichloë Endophyte Infection Rates and Alkaloid Content in Commercially Available Grass Seed Mixtures in Europe

2020 ◽  
Vol 8 (4) ◽  
pp. 498
Author(s):  
Jochen Krauss ◽  
Veronika Vikuk ◽  
Carolyn A. Young ◽  
Markus Krischke ◽  
Martin J. Mueller ◽  
...  
Keyword(s):  
Fungal Endophytes ◽  
Grass Species ◽  
Infection Status ◽  
Infection Rates ◽  
Cool Season ◽  
Infected Seed ◽  
Toxic Alkaloids ◽  
Cool Season Grass ◽  
Epichloë Endophyte ◽  
Seed Mixtures

Fungal endophytes of the genus Epichloë live symbiotically in cool season grass species and can produce alkaloids toxic to insects and vertebrates, yet reports of intoxication of grazing animals have been rare in Europe in contrast to overseas. However, due to the beneficial resistance traits observed in Epichloë infected grasses, the inclusion of Epichloë in seed mixtures might become increasingly advantageous. Despite the toxicity of fungal alkaloids, European seed mixtures are rarely tested for Epichloë infection and their infection status is unknown for consumers. In this study, we tested 24 commercially available seed mixtures for their infection rates with Epichloë endophytes and measured the concentrations of the alkaloids ergovaline, lolitrem B, paxilline, and peramine. We detected Epichloë infections in six seed mixtures, and four contained vertebrate and insect toxic alkaloids typical for Epichloë festucae var. lolii infecting Lolium perenne. As Epichloë infected seed mixtures can harm livestock, when infected grasses become dominant in the seeded grasslands, we recommend seed producers to test and communicate Epichloë infection status or avoiding Epichloë infected seed mixtures.

scholarly journals Stocking System Effects on Soil and Forage Characteristics, and Performance of Fall-Calving Cows Grazing Cool-Season Grass Pastures (A Progress Report)

2012 ◽  
Author(s):  
Margaret Dunn ◽  
James R. Russell ◽  
Daniel G. Morrical ◽  
Stephen K. Barnhart ◽  
H. Joe Sellers
Keyword(s):  
Progress Report ◽  
Cool Season ◽  
And Performance ◽  
Fall Calving ◽  
Cool Season Grass
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