Exploring the Fermentation Kinetics of Medusahead Treated with Glyphosate at Different Particle Lengths
Glyphosate-treated medusahead (Taeniantherum caput-medusae (L.) Nevski) has been shown to increase livestock grazing preference for an otherwise unpalatable plant. This response could be the consequence of changes in the plant's digestion kinetics induced by the herbicide. Thus, the objective o...
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| Veröffentlicht in: | Journal of animal science 2018-12, Vol.96, p.207-207 |
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| creator | Spackman, C Stonecipher, C Panter, K Villalba, J |
| description | Glyphosate-treated medusahead (Taeniantherum caput-medusae (L.) Nevski) has been shown to increase livestock grazing preference for an otherwise unpalatable plant. This response could be the consequence of changes in the plant's digestion kinetics induced by the herbicide. Thus, the objective of this study was to determine the in vitro digestion kinetics of medusahead treated with different herbicide concentrations (788 g ae/ha-1 (High), 394 g ae/ha-1 (Low), and 0 g ae/ha-1 (Control)) at different particle lengths (1, 20, 30, and 40 mm). Medusahead was treated with glyphosate during the late vegetative to early reproductive stage of the plant at two locations, Mantua, UT and Ritzville, WA. In vitro gas production was measured at 2, 4, 6, 8, 12, 18, 24, 36, 48, 72, 96, and 120 h of incubation, and gas production kinetics was adjusted using a single phasic model with three parameters. Apparent digestible organic matter (DOM) and ash content of the substrates were also measured after incubation. The experimental design was a completely randomized block design with herbicide treatment, particle length and location as fixed factors and four runs as replicates. The smallest particle length, Low herbicide treatment and Ritzville location showed the greatest DOM and lowest Ash content (Table 1; P |
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Nevski) has been shown to increase livestock grazing preference for an otherwise unpalatable plant. This response could be the consequence of changes in the plant's digestion kinetics induced by the herbicide. Thus, the objective of this study was to determine the in vitro digestion kinetics of medusahead treated with different herbicide concentrations (788 g ae/ha-1 (High), 394 g ae/ha-1 (Low), and 0 g ae/ha-1 (Control)) at different particle lengths (1, 20, 30, and 40 mm). Medusahead was treated with glyphosate during the late vegetative to early reproductive stage of the plant at two locations, Mantua, UT and Ritzville, WA. In vitro gas production was measured at 2, 4, 6, 8, 12, 18, 24, 36, 48, 72, 96, and 120 h of incubation, and gas production kinetics was adjusted using a single phasic model with three parameters. Apparent digestible organic matter (DOM) and ash content of the substrates were also measured after incubation. The experimental design was a completely randomized block design with herbicide treatment, particle length and location as fixed factors and four runs as replicates. The smallest particle length, Low herbicide treatment and Ritzville location showed the greatest DOM and lowest Ash content (Table 1; P<0.05). The potential gas production (parameter A) was the greatest for the High herbicide and 20 mm particle length treatments. Parameter B was the lowest and parameter C was the greatest for 1 mm particles, whereas parameter C was lower for the High and Low herbicide treatments than for Control (Table 1; P<0.05). These results suggest that herbicide treatments improve the digestion of medusahead, contributing to explain the greater palatability of the treated weed. Results also reveal an inhibitory effect of particle size on medusahead digestibility and a location effect, which may explain differences in medusahead intake across locations.</description><identifier>ISSN: 0021-8812</identifier><identifier>EISSN: 1525-3163</identifier><language>eng</language><publisher>Champaign: Oxford University Press</publisher><subject>Ashes ; Design of experiments ; Digestibility ; Digestion ; Experimental design ; Fermentation ; Gas production ; Glyphosate ; Herbicides ; Incubation ; Kinetics ; Livestock ; Livestock grazing ; Organic matter ; Palatability ; Parameters ; Substrates ; Tables ; Taeniatherum</subject><ispartof>Journal of animal science, 2018-12, Vol.96, p.207-207</ispartof><rights>Copyright Oxford University Press Dec 2018</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>314,776,780</link.rule.ids></links><search><creatorcontrib>Spackman, C</creatorcontrib><creatorcontrib>Stonecipher, C</creatorcontrib><creatorcontrib>Panter, K</creatorcontrib><creatorcontrib>Villalba, J</creatorcontrib><title>Exploring the Fermentation Kinetics of Medusahead Treated with Glyphosate at Different Particle Lengths</title><title>Journal of animal science</title><description>Glyphosate-treated medusahead (Taeniantherum caput-medusae (L.) Nevski) has been shown to increase livestock grazing preference for an otherwise unpalatable plant. This response could be the consequence of changes in the plant's digestion kinetics induced by the herbicide. Thus, the objective of this study was to determine the in vitro digestion kinetics of medusahead treated with different herbicide concentrations (788 g ae/ha-1 (High), 394 g ae/ha-1 (Low), and 0 g ae/ha-1 (Control)) at different particle lengths (1, 20, 30, and 40 mm). Medusahead was treated with glyphosate during the late vegetative to early reproductive stage of the plant at two locations, Mantua, UT and Ritzville, WA. In vitro gas production was measured at 2, 4, 6, 8, 12, 18, 24, 36, 48, 72, 96, and 120 h of incubation, and gas production kinetics was adjusted using a single phasic model with three parameters. Apparent digestible organic matter (DOM) and ash content of the substrates were also measured after incubation. The experimental design was a completely randomized block design with herbicide treatment, particle length and location as fixed factors and four runs as replicates. The smallest particle length, Low herbicide treatment and Ritzville location showed the greatest DOM and lowest Ash content (Table 1; P<0.05). The potential gas production (parameter A) was the greatest for the High herbicide and 20 mm particle length treatments. Parameter B was the lowest and parameter C was the greatest for 1 mm particles, whereas parameter C was lower for the High and Low herbicide treatments than for Control (Table 1; P<0.05). These results suggest that herbicide treatments improve the digestion of medusahead, contributing to explain the greater palatability of the treated weed. Results also reveal an inhibitory effect of particle size on medusahead digestibility and a location effect, which may explain differences in medusahead intake across locations.</description><subject>Ashes</subject><subject>Design of experiments</subject><subject>Digestibility</subject><subject>Digestion</subject><subject>Experimental design</subject><subject>Fermentation</subject><subject>Gas production</subject><subject>Glyphosate</subject><subject>Herbicides</subject><subject>Incubation</subject><subject>Kinetics</subject><subject>Livestock</subject><subject>Livestock grazing</subject><subject>Organic matter</subject><subject>Palatability</subject><subject>Parameters</subject><subject>Substrates</subject><subject>Tables</subject><subject>Taeniatherum</subject><issn>0021-8812</issn><issn>1525-3163</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2018</creationdate><recordtype>article</recordtype><sourceid>8G5</sourceid><sourceid>BENPR</sourceid><sourceid>GUQSH</sourceid><sourceid>M2O</sourceid><recordid>eNqNjMsKwjAURIMoWB__cMF1IUlprWufoIKL7iXY2yZSk5rcov69XfgBrgbmzJkBi0Qq0zgRWTJkEedSxHku5JhNQrhzLmS6SiNWb99t47yxNZBG2KF_oCVFxlk4GotkbgFcBWcsu6A0qhIKj4qwhJchDfvm02oX-gIUwcZUFfr-AC7K92qDcEJbkw4zNqpUE3D-yylb7LbF-hC33j07DHS9u87bHl2lyLKEizxbJv-tvkuVSPE</recordid><startdate>20181201</startdate><enddate>20181201</enddate><creator>Spackman, C</creator><creator>Stonecipher, C</creator><creator>Panter, K</creator><creator>Villalba, J</creator><general>Oxford University Press</general><scope>3V.</scope><scope>7RQ</scope><scope>7X2</scope><scope>7X7</scope><scope>7XB</scope><scope>88A</scope><scope>88E</scope><scope>88I</scope><scope>8AF</scope><scope>8FE</scope><scope>8FG</scope><scope>8FH</scope><scope>8FI</scope><scope>8FJ</scope><scope>8FK</scope><scope>8G5</scope><scope>ABJCF</scope><scope>ABUWG</scope><scope>AEUYN</scope><scope>AFKRA</scope><scope>ATCPS</scope><scope>AZQEC</scope><scope>BBNVY</scope><scope>BENPR</scope><scope>BGLVJ</scope><scope>BHPHI</scope><scope>CCPQU</scope><scope>DWQXO</scope><scope>FYUFA</scope><scope>GHDGH</scope><scope>GNUQQ</scope><scope>GUQSH</scope><scope>HCIFZ</scope><scope>K9.</scope><scope>L6V</scope><scope>LK8</scope><scope>M0K</scope><scope>M0S</scope><scope>M1P</scope><scope>M2O</scope><scope>M2P</scope><scope>M7P</scope><scope>M7S</scope><scope>MBDVC</scope><scope>PATMY</scope><scope>PQEST</scope><scope>PQQKQ</scope><scope>PQUKI</scope><scope>PRINS</scope><scope>PTHSS</scope><scope>PYCSY</scope><scope>Q9U</scope><scope>S0X</scope><scope>U9A</scope></search><sort><creationdate>20181201</creationdate><title>Exploring the Fermentation Kinetics of Medusahead Treated with Glyphosate at Different Particle Lengths</title><author>Spackman, C ; 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Nevski) has been shown to increase livestock grazing preference for an otherwise unpalatable plant. This response could be the consequence of changes in the plant's digestion kinetics induced by the herbicide. Thus, the objective of this study was to determine the in vitro digestion kinetics of medusahead treated with different herbicide concentrations (788 g ae/ha-1 (High), 394 g ae/ha-1 (Low), and 0 g ae/ha-1 (Control)) at different particle lengths (1, 20, 30, and 40 mm). Medusahead was treated with glyphosate during the late vegetative to early reproductive stage of the plant at two locations, Mantua, UT and Ritzville, WA. In vitro gas production was measured at 2, 4, 6, 8, 12, 18, 24, 36, 48, 72, 96, and 120 h of incubation, and gas production kinetics was adjusted using a single phasic model with three parameters. Apparent digestible organic matter (DOM) and ash content of the substrates were also measured after incubation. The experimental design was a completely randomized block design with herbicide treatment, particle length and location as fixed factors and four runs as replicates. The smallest particle length, Low herbicide treatment and Ritzville location showed the greatest DOM and lowest Ash content (Table 1; P<0.05). The potential gas production (parameter A) was the greatest for the High herbicide and 20 mm particle length treatments. Parameter B was the lowest and parameter C was the greatest for 1 mm particles, whereas parameter C was lower for the High and Low herbicide treatments than for Control (Table 1; P<0.05). These results suggest that herbicide treatments improve the digestion of medusahead, contributing to explain the greater palatability of the treated weed. Results also reveal an inhibitory effect of particle size on medusahead digestibility and a location effect, which may explain differences in medusahead intake across locations.</abstract><cop>Champaign</cop><pub>Oxford University Press</pub></addata></record> |
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| source | Oxford University Press Journals All Titles (1996-Current); Elektronische Zeitschriftenbibliothek - Frei zugängliche E-Journals; PubMed Central |
| subjects | Ashes Design of experiments Digestibility Digestion Experimental design Fermentation Gas production Glyphosate Herbicides Incubation Kinetics Livestock Livestock grazing Organic matter Palatability Parameters Substrates Tables Taeniatherum |
| title | Exploring the Fermentation Kinetics of Medusahead Treated with Glyphosate at Different Particle Lengths |
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