Consumption and Digestibility of Lespedeza Sericea Hay and Alfalfa Hay Plus Gallotannin

Hawkins, George

doi:10.3168/jds.s0022-0302(55)94966-3

Cited by 18 publications

(11 citation statements)

References 8 publications

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“…'. Although CST were higher in tannins than older twigs, their greater digestibilities were probably due to lower lignin levels. For example, Burns, Mochrie & Cope (1972) found that increasing tannin levels had less effect on forage digestion by cattle than did increasing fibre levels, and Hawkins (1955) suggested that the low dry matter digestibility of Lespedeza cuneata was attributable more to high lignin levels than to tannins. For example, Burns, Mochrie & Cope (1972) found that increasing tannin levels had less effect on forage digestion by cattle than did increasing fibre levels, and Hawkins (1955) suggested that the low dry matter digestibility of Lespedeza cuneata was attributable more to high lignin levels than to tannins.…”

Section: Discussionmentioning

confidence: 99%

Diet Selection by Domestic Goats in Relation to Blackbrush Twig Chemistry

Provenza¹,

Malechek²

1984

The Journal of Applied Ecology

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JSTOR is a not-for-profit service that helps scholars, researchers, and students discover, use, and build upon a wide range of content in a trusted digital archive. We use information technology and tools to increase productivity and facilitate new forms of scholarship. For more information about JSTOR, please contact support@jstor.org. SUMMARY(1) Goats browsing current season's blackbrush (Coleogyne ramosissima) twigs consumed diets higher in crude protein, in vitro digestible organic matter, and tannins than did goats browsing older twigs. They also lost less weight than their counterparts browsing older twigs.(2) When given a choice, however, goats preferred not to eat current season's twigs, presumably because of their high tannin concentrations and their location within the plant canopy.

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Section: Discussionmentioning

confidence: 99%

Diet Selection by Domestic Goats in Relation to Blackbrush Twig Chemistry

Provenza¹,

Malechek²

1984

The Journal of Applied Ecology

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“…Donnelly and Anthony (7) obtained relatively higher in vivo digestibility values with the intra-rumenal nylon bag technique. As previously noted, Hawkins (10) reported that steers consumed more of sericea leaves than stems. Hawkins (11) also reported that the addition of commercially obtained tannin to alfalfa hay had no apparent effect on digestibility.…”

Section: Contribution Of Fibrous Constituents and Tanninsmentioning

confidence: 59%

Components of Forage Quality in Sericea Lespedeza in Relationship to Strain, Season, and Cutting Treatments¹

Cope¹,

Burns²

1974

Agronomy Journal

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A study of forage quality was made on three genetically different strains of sericea [Lespedeza cuneata (Dumont) G. Don]. The study was designed to evaluate forage samples over a wide range of plant maturity, since previous studies have been restricted largely to mature hay samples representing a narrow range. The forage sampling plan covered two distinctly different growth periods, early spring and mid‐summer. The three sericea strains were harvested at weekly intervals for short periods during the spring and summer of 1970 and 1971. Leaf and stem portions were separated and placed in liquid nitrogen in the field. Forage quality was evaluated by in vitro dry matter disappearance (IVDMD), by concentrations of total fiber and fiber components, and by concentration of the anti‐quality component, tannin. Forage quality, as measured by IVDMD, was generally low, especially for leaf samples high in tannin and stem samples from the more mature growth stages. A low‐tannin strain averaged higher in IVDMD than two high‐tannin strains over all harvests. Leaf IVDMD was sharply depressed as tannin values approached 10% and then declined slowly with increasing concentrations. Leaf fiber had little direct effect on IVDMD at high tannin levels. IVDMD of stem samples decreased rapidly with successive harvests in both spring and summer. Fiber content was high at an early growth stage for both spring and summer harvest periods. The correlation of fiber content with IVDMD was high and negative. There were only small strain differences in fiber content. Stem tannin content for the summer harvest in 1971 was high enough to affect IVDMD and interacted with fiber content to give very low values. For stem samples from the first harvest period, simple regression of fiber on IVDMD accounted for a significant proportion of the variation in IVDMD (r2 = 0.81 and 0.84, respectively, for neutral detergent fiber and acid detergent fiber. For the second harvest period, the addition of tannin in multiple regression equations increased the predictability to R2 = 0.95 and 0.94, respectively. Neither the simple nor the multiple regressions accounted for a large proportion of the variation in leaf IVDMD.

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“…The CT AB procedure removes tannin, o"ther acid-soluble material, and protein. High lignin content and the low coefficient of apparent digestibility of crude protein in sericea were found to account for the relatively low digestibility of dry tpatter of this forage (7).…”

Section: Introductionmentioning

confidence: 91%

“…Hawkins (7) recognized tannin as a possible contributor to the high lignin values of sericea obtained by the 72% H 2 S0 4 method (6). He modified this method to include an initial extraction of tannin and a correction for residual crude protein that reduced the lignin value by 45% (7). The concept that tannin appeared to contribute to the high lignin values of sericea lespedeza gained further support from lignin values of this for-age obtained by the hexadecyltrimethylamine bromide (CTAB) procedure (Peter .J.…”

Section: Introductionmentioning

confidence: 99%

Acid Detergent Method for Reduction of Tannin Interference in Determining Lignin of Sericea Lespedeza

Donnelly¹,

Wear

1972

Agronomy Journal

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Apparent lignin was determined on stems and leaves of high‐ and low‐tannin sericea lespedeza (Lespedeza cuneata [Dumont] G. Don) by two methods. One method by which tannin, other acid‐soluble material, and protein are removed by detergents gave lower and more realistic lignin values than the conventional (H2SO4) method. Tannin was associated with high apparent lignin values when determined by the latter method. Genetic differences in lignin content among normal (high tannin) sericea lines and varieties were found, indicating that varieties lower in lignin than present ones can be developed.

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Consumption and Digestibility of Lespedeza Sericea Hay and Alfalfa Hay Plus Gallotannin

Cited by 18 publications

References 8 publications

Diet Selection by Domestic Goats in Relation to Blackbrush Twig Chemistry

Diet Selection by Domestic Goats in Relation to Blackbrush Twig Chemistry

Components of Forage Quality in Sericea Lespedeza in Relationship to Strain, Season, and Cutting Treatments¹

Acid Detergent Method for Reduction of Tannin Interference in Determining Lignin of Sericea Lespedeza

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Consumption and Digestibility of Lespedeza Sericea Hay and Alfalfa Hay Plus Gallotannin

Cited by 18 publications

References 8 publications

Diet Selection by Domestic Goats in Relation to Blackbrush Twig Chemistry

Diet Selection by Domestic Goats in Relation to Blackbrush Twig Chemistry

Components of Forage Quality in Sericea Lespedeza in Relationship to Strain, Season, and Cutting Treatments1

Acid Detergent Method for Reduction of Tannin Interference in Determining Lignin of Sericea Lespedeza

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Components of Forage Quality in Sericea Lespedeza in Relationship to Strain, Season, and Cutting Treatments¹