Dose titration of sericea lespedeza leaf meal on Haemonchus contortus infection in lambs and kids

Sericea lespedeza (Lespedeza cuneata [Dumont de Courset] G. Don.; SL) is a perennial, warm‐season legume containing condensed tannins (CT) that can play important roles in ruminant ecosystems. Our research objective was to determine season‐long average herbage CT fractions, crude protein (CP) and fiber concentrations under three harvest regimens for SL cv. AU Grazer at five locations within the southeastern USA during 2010. Harvest regimens were regrowth every 35 days (35‐day), previously uncut plots every 35 days (ACCUM), or regrowth when height reached 40 cm (40 cm). We found harvest regimen by location interactions (P ≤ 0.05) for all dependent variables. The ACCUM plants usually had greater (P ≤ 0.05) fiber concentrations where there were differences, except for the Louisiana location. The lowest (114 g kg−1; P ≤ 0.05) CP concentrations were measured in ACCUM plants at the driest location (Texas) while the highest (181 g kg−1 for North Carolina plants) came from the 35‐day regimen. Total CT (TCT) concentration varied (P ≤ 0.05) from a low of 61.1 g kg−1 for ACCUM plants in Louisiana to 100.7 g kg−1 for Texas plants harvested from 35‐day plots. In summary, harvest regimen influenced SL nutrient and CT concentrations. Fiber concentration was better correlated (−0.621 for acid detergent fiber; P ≤ 0.05) with TCT than CP (−0.014; P = 0.82). Sericea lespedeza regrowth harvested every 35 days had higher season‐long average TCT concentrations in two of five locations along with greater CP and less fiber concentrations in four of five locations compared to the ACCUM regimen.

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“…; Burke et al . ) raises questions about variable concentration (Muir et al . ) and yield (Muir et al .…”

Section: Introductionmentioning

confidence: 99%

Harvest regimen changes sericea lespedeza condensed tannin, fiber and protein concentrations

Muir¹,

Terrill

Mosjidis

et al. 2017

Grassland Science

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“…Mosjidis (2001) released SL AU Grazer for its grazing tolerance and it has been widely studied as a source of CT in hay or pellets to suppress gastrointestinal nematode infections in goats (Shaik et al, 2006; Moore et al, 2008; Gujja et al, 2013) and sheep (Lange et al, 2006; Burke et al, 2011). If grown and sold for its CT concentration, however, we need to determine how variable this is over wide environmental ranges, especially latitude, altitude, and climate.…”

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Season Progression, Ontogenesis, and Environment Affect Lespedeza cuneata Herbage Condensed Tannin, Fiber, and Crude Protein Concentrations

Muir¹,

Terrill

Mosjidis

et al. 2017

Crop Science

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Sericea lespedeza [Lespedeza cuneata (Dumont de Courset) G. Don., SL] is a perennial, warm‐season forage legume with wide adaptation, freeze tolerance, establishment ease, and persistence under grazing. It has high condensed tannin (CT) concentrations (g kg−1), which could be useful for methane mitigation and rumen bypass protein, as well as insect pest and gastro‐intestinal nematode suppression. However, CT concentration is variable. Our objective was to test CT, crude protein (CP), and fiber concentrations at five locations (Georgia, Alabama, North Carolina, Louisiana, and Texas) during a growing season. Established ‘AU Grazer’ SL regrowth and accumulated herbage in separate trials was sampled starting late April 2010 every 35 d for four dates. Regrowth CP concentration ranged (P ≤ 0.05) from 127 g kg−1 in North Carolina on date 3 up to 221 g kg−1 in Alabama on date 1. Sericea lespedeza regrowth in the warmest latitude (Louisiana) consistently contained among the greatest (P ≤ 0.05) acid detergent fiber. In regrowth herbage, we recorded a wide (P ≤ 0.05) total CT range, from 133.5 mg kg−1 in Texas on date 3 to 46.1 mg kg−1 in Louisiana on date 1, reflecting variability in fiber‐bound, protein‐bound, and especially extractible CT. Results from accumulated herbage reflected (P ≤ 0.05) herbage ontogenesis with less CP and greater fiber concentration with maturity but showed the same lack of CT concentration pattern as the regrowth herbage. These results indicate that SL herbage nutritive value and CT concentration is variable, so that any hay or pellets sold commercially for CT content should be assayed by environment and crop maturity.

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“…54, november-december 2014 2001), has been studied as a source of CT in hay or pellets to suppress gastrointestinal nematode infections in goats (Shaik et al, 2006;Moore et al, 2008;Guijja et al, 2013) and sheep (Lange et al, 2006;Burke et al, 2011). 54, november-december 2014 2001), has been studied as a source of CT in hay or pellets to suppress gastrointestinal nematode infections in goats (Shaik et al, 2006;Moore et al, 2008;Guijja et al, 2013) and sheep (Lange et al, 2006;Burke et al, 2011).…”

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confidence: 99%

“…www.crops.org crop science, vol. 54, november-december 2014 2001), has been studied as a source of CT in hay or pellets to suppress gastrointestinal nematode infections in goats (Shaik et al, 2006;Moore et al, 2008;Guijja et al, 2013) and sheep (Lange et al, 2006;Burke et al, 2011). No previous research, however, has systematically documented the variability in its CT concentrations as affected by ontogeny and environment.…”

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confidence: 99%

Environment, Harvest Regimen, and Ontogeny Change Lespedeza cuneata Condensed Tannin and Nitrogen

Muir¹,

Terrill

Kamisetti

et al. 2014

Crop Science

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Condensed tannins (CT) from sericea lespedeza [Lespedeza cuneata (Dumont de Courset) G. Don], a hardy and widely adapted forage legume, have potential for methane emission suppression, rumen protein bypass, gastrointestinal nematode suppression, and pest fly suppression in ruminants. Nitrogen (N) from this herbaceous legume can also be an important component of crude protein in ruminant diets. The concentrations and yields of CT and N, however, have not been studied across a wide range of environments, harvest regimens, or plant maturities. Our results from Texas and Georgia indicate that CT concentrations increased with rainfall, decreased with maturity, and were highly dependent on harvest regimen (P ≤ 0.05). Condensed tannin concentrations ranged (P ≤ 0.05) from 32.7 to 106.1 g CT kg−1 dry matter (DM) and CT DM yields from 274 to 771 kg ha−1 yr−1. Nitrogen concentrations ranged (P ≤ 0.05) from 14.6 to 28.4 g kg−1 DM and N DM yields from 46 to 231 kg ha−1 yr−1. If pellets or hay of sericea lespedeza are to be commercialized specifically for their CT and N content, analysis and labeling will be beneficial because of this variability.

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Dose titration of sericea lespedeza leaf meal on Haemonchus contortus infection in lambs and kids

Cited by 18 publications

References 13 publications

Harvest regimen changes sericea lespedeza condensed tannin, fiber and protein concentrations

Harvest regimen changes sericea lespedeza condensed tannin, fiber and protein concentrations

Season Progression, Ontogenesis, and Environment Affect Lespedeza cuneata Herbage Condensed Tannin, Fiber, and Crude Protein Concentrations

Environment, Harvest Regimen, and Ontogeny Change Lespedeza cuneata Condensed Tannin and Nitrogen

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