المؤلفون: Rigney, Diva N.¹, Hines, Abbigail R.¹, Heaton, Courtney¹, Smith, Brandon B.¹

المصدر: Journal of Animal Science. 2023 Supplement, Vol. 101, p519-519. 1p.

مصطلحات موضوعية: *PUERARIA, *PRIVATE property, *AGRICULTURE, *SOIL solutions, *INTRODUCED species, *SOIL erosion

مصطلحات جغرافية: AUBURN (Ala.)

الشركة/الكيان: UNITED States. Dept. of Agriculture

مستخلص: "The vine that ate the South," also known as kudzu (Pueraria montana [Lour.] Merr.) is a droughttolerant perennial leguminous vine that was introduced from Asia to the United States as an ornamental crop. It was quickly recognized and favored as a solution to soil erosion during the Dust Bowl. However, due to its ability to quickly overtake existing vegetation, it was ultimately labeled as an invasive species by the USDA. Given current sustainability efforts, interest has renewed in ways to incorporate this invasive species for productive agricultural purposes. The goal of this study was to investigate how preservation (i.e., haying) would affect the nutritive value and digestibility of kudzu forage. Kudzu was harvested from a private property in Auburn, Alabama. Two independent plots on the property were utilized; half of thefresh biomass was immediately removed, and the remaining half was removed at 20% moisture for the sun-cured sample. Samples were collected from each plot and assayed for NDF, ADF, ADL, and CP. Samples were also assayed for in vitro true and NDF disappearance (IVTD and IVNDFD, respectively) as well as in situ ruminal disappearance. Data were analyzed using SAS v. 9.4. There was no effect of preservation on NDF, ADF, ADL, and CP concentrations (P =0.39). However, kudzu samples subjected to sun-curing had greater IVTD (64.3%, P < 0.01) and IVTDOM (63.0%; P < 0.01) and tended to have greater IVNDFD (35.6%; P = 0.06) thanfresh kudzu (59.4, 57.8, and 31.3%, respectively). There was no effect (P = 0.12) of preservation on the potentially degradable fraction, lag time, or rate of digestion of kudzu samples. However, fresh samples had a greater (P < 0.01) undegradable residue than did sun-cured samples (49.3 vs.38.8%). The improvements in digestibility are interpreted to mean that preservation methods, such as sun-curing, may be valuable for increasing the value of kudzu as a roughage source for ruminant livestock production systems. [ABSTRACT FROM AUTHOR]

المؤلفون: Adkins, J. B.¹, Gulizia, J. P.¹, Downs, Kevin M.², Cui, S.²

المصدر: Journal of Animal Science. 2021 Supplement, Vol. 99, p350-350. 1/2p.

مصطلحات موضوعية: *PUERARIA, *REPEATED measures design, *NOXIOUS weeds, *GROWING season, *PLANT species, LEAF growth

مصطلحات جغرافية: ASIA

مستخلص: Kudzu (Pueraria montana var. lobata) is an invasive weed species native to eastern Asia affecting much of the southeastern United States. Its broad leaves and viny growth allow it to outcompete native plant species for sunlight and nutrients. Kudzu, however, is a leguminous plant, making it a potential feedstock for ruminant species. Browsing ruminants in areas affected by kudzu could benefit animal productivity while serving to ameliorate rapid plant growth. This study specifically sought to assess the overall rumen degradability, rate of digestion, digestible fraction, and indigestible fraction using an in situ methodology. In situ rumen degradability was analyzed using four ruminally fistulated steers as individual experimental units over two repeated trials. Samples were incubated at 1, 12, 24, 36, 48, 60, and 72 h. Kudzu used in these trials was collected during September, making analysis in this study a reflection of degradability toward the end of the growing season. Data were analyzed as a randomized complete block design with repeated measures showing no significant differences between steers or trials (P > 0.05). Overall degradability across all steers and times was 69.79%. Significant changes in dry matter disappearance across all steers were observed at 1, 12, and 24 h (P < 0.05) with values of 33.86, 64.78, and 74.26%, respectively, and highest observed degradability at 72 h (79.55%). Incubation times between 24 and 72 h were not used in determining rate of digestion as dry matter disappearances throughout these times were not significantly different (P > 0.05). Rate of digestion (kd) was determined, using linear regression, to be 1.68% · h-1 along with a digestible fraction (Do) of 28.29% and indigestible fraction (U) of 22.03%. The results of this study reflect that kudzu maintains a relatively high level of rumen degradability toward seasonal senescence, making it a functional feedstock even into the cooler months. [ABSTRACT FROM AUTHOR]

المؤلفون: Gulizia, Joseph¹ (AUTHOR), Downs, Kevin¹ (AUTHOR), Cui, Song¹ (AUTHOR)

المصدر: Journal of Animal Science. 2019 Supplement, Vol. 97, p85-85. 1p.

مصطلحات موضوعية: *PUERARIA, *GROWING season, *REGRESSION analysis, *BLOCK designs

مصطلحات جغرافية: TENNESSEE

مستخلص: Early and late season kudzu (Pueraria montana var. lobata) leaves were collected to analyze dry matter (DM), crude protein (CP), acid detergent fiber (ADF), and neutral detergent fiber (NDF) in situ rumen disappearance to assess kudzu quality. Four studies were conducted during different growing seasons [2 repeated early season (ES); 2 repeated late season (LS) to determine age variability effects. Kudzu collected from 7 middle Tennessee counties were incubated in the rumen for designated lengths of time (0.25, 1, 12, 24, 36, 48, and 72 h) to determine total rumen degradation (%) and rate of disappearance (% / h). Data were analyzed as a randomized complete block design (RCBD) with repeated measures. Regression analysis was used to determine degradation rate. Overall season effects (across incubation times) for dry matter disappearance (DMD) were significantly different (P < 0.0001). Significant season by incubation time interactions were exhibited for total DMD at 12 (P < 0.0001), 24 (P = 0.0004), 36 (P = 0.0055), 48 (P = 0.0209), and 72 h (P = 0.0384) incubation, with an average rumen degradability of ES kudzu being 9.75% higher than LS between 12 and 72 h. Slope regression between 1 and 24 h determined a rumen degradation rate of 2.41% / h across both seasons, with no significant seasonal difference (P = 0.3396). These results are indicative that ES kudzu is more highly rumen degradable than LS, as evidenced by the significant season by incubation time interactions between 12 and 72 h of incubation. Although there are significant seasonal effects on kudzu DMD during certain incubation times, DMD overall for ES and LS is still indicative of high rumen degradability with an average of 81.45% at 72 h across both seasons. Season effects were minimal for NDF, ADF, and CP rumen disappearance. [ABSTRACT FROM AUTHOR]

المؤلفون: Gulizia, Joseph¹ (AUTHOR), Downs, Kevin¹ (AUTHOR), Cui, Song¹ (AUTHOR)

المصدر: Journal of Animal Science. 2019 Supplement, Vol. 97, p38-38. 1p.

مصطلحات موضوعية: *PUERARIA, *GROWING season, *REGRESSION analysis, *BLOCK designs

مصطلحات جغرافية: TENNESSEE

مستخلص: Early and late season kudzu (Pueraria montana var. lobata) leaves were collected to analyze dry matter (DM), crude protein (CP), acid detergent fiber (ADF), and neutral detergent fiber (NDF) in situ rumen disappearance to assess kudzu quality. Four studies were conducted during different growing seasons [2 repeated early season (ES); 2 repeated late season (LS) to determine age variability effects. Kudzu collected from 7 middle Tennessee counties were incubated in the rumen for designated lengths of time (0.25, 1, 12, 24, 36, 48, and 72 h) to determine total rumen degradation (%) and rate of disappearance (% / h). Data were analyzed as a randomized complete block design (RCBD) with repeated measures. Regression analysis was used to determine degradation rate. Overall season effects (across incubation times) for dry matter disappearance (DMD) were significantly different (P < 0.0001). Significant season by incubation time interactions were exhibited for total DMD at 12 (P < 0.0001), 24 (P = 0.0004), 36 (P = 0.0055), 48 (P = 0.0209), and 72 h (P = 0.0384) incubation, with an average rumen degradability of ES kudzu being 9.75% higher than LS between 12 and 72 h. Slope regression between 1 and 24 h determined a rumen degradation rate of 2.41% / h across both seasons, with no significant seasonal difference (P = 0.3396). These results are indicative that ES kudzu is more highly rumen degradable than LS, as evidenced by the significant season by incubation time interactions between 12 and 72 h of incubation. Although there are significant seasonal effects on kudzu DMD during certain incubation times, DMD overall for ES and LS is still indicative of high rumen degradability with an average of 81.45% at 72 h across both seasons. Season effects were minimal for NDF, ADF, and CP rumen disappearance. [ABSTRACT FROM AUTHOR]

المؤلفون: J P Gulizia, J B Adkins, Song Cui, K. M. Downs

المصدر: J Anim Sci

مصطلحات موضوعية: Poster Presentations, Rumen, biology, Pueraria montana var. lobata, Agronomy, Genetics, Late season, Animal Science and Zoology, General Medicine, biology.organism_classification, Kudzu, Food Science

الوصف: Kudzu (Pueraria montana var. lobata) is an invasive weed species native to eastern Asia affecting much of the southeastern United States. Its broad leaves and viny growth allow it to outcompete native plant species for sunlight and nutrients. Kudzu, however, is a leguminous plant, making it a potential feedstock for ruminant species. Browsing ruminants in areas affected by kudzu could benefit animal productivity while serving to ameliorate rapid plant growth. This study specifically sought to assess the overall rumen degradability, rate of digestion, digestible fraction, and indigestible fraction using an in situ methodology. In situ rumen degradability was analyzed using four ruminally fistulated steers as individual experimental units over two repeated trials. Samples were incubated at 1, 12, 24, 36, 48, 60, and 72 h. Kudzu used in these trials was collected during September, making analysis in this study a reflection of degradability toward the end of the growing season. Data were analyzed as a randomized complete block design with repeated measures showing no significant differences between steers or trials (P > 0.05). Overall degradability across all steers and times was 69.79%. Significant changes in dry matter disappearance across all steers were observed at 1, 12, and 24 h (P < 0.05) with values of 33.86, 64.78, and 74.26%, respectively, and highest observed degradability at 72 h (79.55%). Incubation times between 24 and 72 h were not used in determining rate of digestion as dry matter disappearances throughout these times were not significantly different (P > 0.05). Rate of digestion (kd) was determined, using linear regression, to be 1.68% ∙ h-1 along with a digestible fraction (Do) of 28.29% and indigestible fraction (U) of 22.03%. The results of this study reflect that kudzu maintains a relatively high level of rumen degradability toward seasonal senescence, making it a functional feedstock even into the cooler months.

الوصول الحر: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::87022e692c6f04ce35b167d8879f2b72Test
https://doi.org/10.1093/jas/skab235.642Test

المؤلفون: Davis, R.H.¹, Corley III, R.N.¹

المصدر: Journal of Animal Science. Oct2003 Supplement 2, Vol. 81, p27-27. 1/4p.

مصطلحات موضوعية: *PUERARIA, *GOAT feeding & feeds

مستخلص: Discusses the abstract of the study 'Evaluation of kudzu (Pueraria lobata) as feed for goats,' presented at the American Society of Animal Science's Southern Section conference on January 31-February 4, 2003, in Mobile, Alabama.

المؤلفون: J. F. Valentim, J. C. Carneiro, Alice N. Pell, Robert W. Blake, Charles F. Nicholson, Danny G. Fox, B. L. Rueda, E. C. M. Fernandes, Luis O Tedeschi

المصدر: Journal of Animal Science. 81:2923-2937

مصطلحات موضوعية: Wet season, biology, ved/biology, Ecology, ved/biology.organism_classification_rank.species, food and beverages, Forage, General Medicine, Sorghum, biology.organism_classification, Brachiaria, Animal science, Stocking, Dry season, Grazing, Genetics, Pueraria phaseoloides, Animal Science and Zoology, Food Science

الوصف: Our objectives were to evaluate strategies to improve productivity and economic returns from beef and dual-purpose cattle systems based on data collected on one dual-purpose (Bos taurus x Bos indicus) and two beef (Nellore) cattle farms in the western Amazon region of Brazil. Forage chemical composition and digestion rates of carbohydrate fractions of grazed Brachiaria decumbens and Brachiaria brizantha cv. Marandu grasses and Pueraria phaseoloides (tropical kudzu) legume were measured monthly during a 9-mo period from the end of one dry season to the end of the subsequent rainy season. Measurements of milk and growth responses to grazing these forages were used to predict animal productivity responses to dietary nutrient availability throughout an annual cycle. The ME available for gain in our simulations was always more limiting than metabolizable protein. The predicted ME available for gain was 0.50 kg/d for steers grazing B. brizantha and 0.40 kg/d for finishing steers grazing B. decumbens. Grasses contained more NDF and neutral detergent insoluble protein and less ME (P < 0.05) in the rainiest months than in the less rainy season, which resulted in 20% less predicted weight gain by growing steers (P < 0.05). Supplementation with sorghum grain was required to increase milk production and growth by 25 or 50% per animal, respectively, but this strategy was less profitable than current forage-only diets. Greater productivity of land and labor from higher stocking indicated greater net margins for beef production, but not for milk. This study suggested that more intensive beef production by judicious fertilization of grass-legume pastures and greater stocking density is the preferable strategy for owners of these cattle systems to improve economic returns under current conditions. It also might help decrease the motivation for additional forest clearing.

الوصول الحر: https://explore.openaire.eu/search/publication?articleId=doi_________::eb2545f7c01c4ce725a768e4311e55bcTest
https://doi.org/10.2527/2003.81122923xTest

المؤلفون: B L, Rueda, R W, Blake, C F, Nicholson, D G, Fox, L O, Tedeschi, A N, Pell, E C M, Fernandes, J F, Valentim, J C, Carneiro

المصدر: Journal of animal science. 81(12)

مصطلحات موضوعية: Dietary Fiber, Male, Population Density, Tropical Climate, Poaceae, Weight Gain, Animal Feed, Pueraria, Milk, Dietary Carbohydrates, Animals, Lactation, Animal Nutritional Physiological Phenomena, Cattle, Digestion, Female, Dietary Proteins, Seasons, Animal Husbandry, Nutritive Value, Brazil

الوصف: Our objectives were to evaluate strategies to improve productivity and economic returns from beef and dual-purpose cattle systems based on data collected on one dual-purpose (Bos taurus x Bos indicus) and two beef (Nellore) cattle farms in the western Amazon region of Brazil. Forage chemical composition and digestion rates of carbohydrate fractions of grazed Brachiaria decumbens and Brachiaria brizantha cv. Marandu grasses and Pueraria phaseoloides (tropical kudzu) legume were measured monthly during a 9-mo period from the end of one dry season to the end of the subsequent rainy season. Measurements of milk and growth responses to grazing these forages were used to predict animal productivity responses to dietary nutrient availability throughout an annual cycle. The ME available for gain in our simulations was always more limiting than metabolizable protein. The predicted ME available for gain was 0.50 kg/d for steers grazing B. brizantha and 0.40 kg/d for finishing steers grazing B. decumbens. Grasses contained more NDF and neutral detergent insoluble protein and less ME (P0.05) in the rainiest months than in the less rainy season, which resulted in 20% less predicted weight gain by growing steers (P0.05). Supplementation with sorghum grain was required to increase milk production and growth by 25 or 50% per animal, respectively, but this strategy was less profitable than current forage-only diets. Greater productivity of land and labor from higher stocking indicated greater net margins for beef production, but not for milk. This study suggested that more intensive beef production by judicious fertilization of grass-legume pastures and greater stocking density is the preferable strategy for owners of these cattle systems to improve economic returns under current conditions. It also might help decrease the motivation for additional forest clearing.

الوصول الحر: https://explore.openaire.eu/search/publication?articleId=pmid________::98c51435dd67c57e2c1a09b543b830a9Test
https://pubmed.ncbi.nlm.nih.gov/14677847Test