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Use Of Near Infrared Spectroscopy To Assess Nutritional Status Of Cattle Diets On Rangelands, J W. Stuth, E D. Kapes, R K. Lyons May 2025

Use Of Near Infrared Spectroscopy To Assess Nutritional Status Of Cattle Diets On Rangelands, J W. Stuth, E D. Kapes, R K. Lyons

IGC Proceedings (1977-2023)

There are two principal means for assessing the quality of grazing ruminant diets, analysis of extrusa from esophageally fistulated animals or indirect estimates from fecal analysis. Wet chemistry methods are well documented for the former but have proven to be of limited value regarding the latter. It is the purpose of this research to determine the suitability of near infrared spectroscopy (NIRS) for estimating diet crude protein (%) and organic matter digestibility (%) directly from extrusa and indirectly from feces.

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Near Infrared Reflectance Spectroscopy As An Analytical Tool For World Agriculture, J S. Shenk May 2025

Near Infrared Reflectance Spectroscopy As An Analytical Tool For World Agriculture, J S. Shenk

IGC Proceedings (1977-2023)

Agriculture produces the food and fiber needed for human existence. In the past 100 years, it becames apparent that nutri­ent content and quantity measurements of feed were necessary in livestock feeding programs. During this 100 year period, scientists developed and refined laboratory reference methods for the industry. However, nutritional evaluation of these products was and still is expensive and time consuming. Near infrared spectroscopy (NIRS) analysis offered the promise of rapid low cost analysis of nutrient composition. This analytical method has the potential to overcome the analytical problems facing world agriculture. First reports of NIRS in the literature occured as …

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Monitoring The Nutrition Of Grazing Cattle With Near-Infrared Analysis Of Feces, S W. Coleman, J W. Stuth, J W. Holloway May 2025

Monitoring The Nutrition Of Grazing Cattle With Near-Infrared Analysis Of Feces, S W. Coleman, J W. Stuth, J W. Holloway

IGC Proceedings (1977-2023)

The nutrition of grazing animals is difficult to assess because of the difficulty in determining the amount and quality of the ingested forage. Although many techniques have been proposed for sampling the grazed forage, none offer quantitat­ive estimates of diet quality and intake for individual animals in large numbers. The feces excreted by animals contain undigested residues of the diet consumed along with products of animal and microbiological origin. The objective was to determine if near-infrared spectroscopy (NIRS) could be used to developed spectral indices from feces which describe the quantitative and qualitative attributes of the diet over a range …

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Prevision De La Valeur Nutritive Des Fourrages Ingeres Sur Parcours Naturels Par Les Ruminants Domestiques Saheliens Et Soudaniens, H Guerin, D Richard, P Lefevre, D Friot, N Mbaye May 2025

Prevision De La Valeur Nutritive Des Fourrages Ingeres Sur Parcours Naturels Par Les Ruminants Domestiques Saheliens Et Soudaniens, H Guerin, D Richard, P Lefevre, D Friot, N Mbaye

IGC Proceedings (1977-2023)

Les herbivores domestiques eleves sur Jes parcours naturels saheliens et soudaniens consomment des proportions variables d'especes herbacees annuelles en vegetation pendant 3 a 4 mois puis a l'etat de paille sur pied, ainsi que des feuilles ou des fruits d'especes ligneuses disponibles durant toute l'annee. L'objectif de l'etude est d'etablir des equations de previsions de la digesti­bilite de la matiere organique (DMO) ou de la teneur en matieres azotees digestibles (MAD) de ces fourrages en fonc­tion de leur composition chimique ou de celle des feces des ani­maux qui Jes consomment.

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Evaluation Of King Grass Clones (Pennisetum Purpureum) Obtained By Tissue Culture. Iii. Quality Of The Mutants, R S. Herrera, J Lauzan, R O. Martinez, M Monzote, R Cruz May 2025

Evaluation Of King Grass Clones (Pennisetum Purpureum) Obtained By Tissue Culture. Iii. Quality Of The Mutants, R S. Herrera, J Lauzan, R O. Martinez, M Monzote, R Cruz

IGC Proceedings (1977-2023)

Two ofthe main aspects of the forages used in bovine cattle nutrition are yield and its quality. More recently, Martinez et al. (1986) observed the possibility of modifying some indices by the in vitro tissue culture. Thus, the objective of the present work was to evaluate some quality indice of Pennisetum clones obtained by tissues culture.

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Changes In The Nutritive Value And In The Nutritive Value Yield /Ha Of Some Fodder Grasses During The First Growing Season, D Ferenc May 2025

Changes In The Nutritive Value And In The Nutritive Value Yield /Ha Of Some Fodder Grasses During The First Growing Season, D Ferenc

IGC Proceedings (1977-2023)

In Hungary, and also in the areas with similar geographi­cal and climatic conditions, about 40 - 60 per cent of grass yields per year is harvested from the first growth. For the deter­mination of the optimal harvest time it is very important to know the changes in the nutritive value and volume of the first growth. These changes are influenced by the traits of the different varieties too.

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Evaluation Of New Varieties Of Fodder Beet (Majoral And Poly Productiva) As New Summer Forages In Egypt, M S. Nowar, S M. Abd El-Baki, I F. Marie, A A. Zaki May 2025

Evaluation Of New Varieties Of Fodder Beet (Majoral And Poly Productiva) As New Summer Forages In Egypt, M S. Nowar, S M. Abd El-Baki, I F. Marie, A A. Zaki

IGC Proceedings (1977-2023)

Interest in fodder beet has increased dramatically in many parts of the world. Owing to its yield during summer season in Egypt, time during which shortage of green and succulent for­age occurs, interest in its cultivation started early (Ghoneim, 1967 and Abou El-Hassan et al., 1971). Fodder beet has improved cows condition and milk yield and quality (Kocisova, 1976; Burckhardt, 1979; De Brabander et al., 1981 and Pearce, 1983). Fodder beet can considerably increase the farm total energy production. However, to grow it successfully the farmer must have an « arable» mentality (Pearce, 1983). The present research was conducted to …

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Nutritive Value Of Some Grass Species In Hungary, J Varhegyi May 2025

Nutritive Value Of Some Grass Species In Hungary, J Varhegyi

IGC Proceedings (1977-2023)

Demarquilly and Weiss (1970), Becker and Nehring (1969), Aman and Lindgren (1983) etc. reported data for the digesti­bility and nutritive value of different grass species. The present paper reports the chemical composition and the digestibility of the following species grown in Hungary: smooth brome-grass (Bromus inermis), meadow fescue (Festuca pratensis), orchard­grass (Dactylis glomerata), reed canarygrass (Phalaris arundin­acea), tall fescue (Festuca arundinacea) and crested wheatgrass (Agropyron cristatum). The data were obtained during long term investigation from 1975 to 1983, but crested wheatgrass from 1980-83.

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Influence Of Temperatures On The Earliness Of Heading And Nutritive Value Of Two Grasses During The First Growth Cycle, J Andrieu, M Berekoutou May 2025

Influence Of Temperatures On The Earliness Of Heading And Nutritive Value Of Two Grasses During The First Growth Cycle, J Andrieu, M Berekoutou

IGC Proceedings (1977-2023)

The two objectives of this study were: I) to see if the method of the sums of temperatures allowed for a correct prediction, not only of the earliness of heading but also of the quality of spring growth whatever the surrounding conditions ; 2) to check that the criteria, suggested jn the feed Tables published by INRA in France (INRA 1981; INRA 1988) to predict the quality of spring growth, could be used for the whole of France. This study is drawn from the thesis ofM. Berekoutou (1986).

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Valeur Alimentaire Des Associations Graminees- Trefle Blanc Au Stade Du Paturage, R Giovanni May 2025

Valeur Alimentaire Des Associations Graminees- Trefle Blanc Au Stade Du Paturage, R Giovanni

IGC Proceedings (1977-2023)

Cette etude a eu pour objectif de comparer la composition et la digestibilite du trefle blanc a celles des deux principales gra-. minees fourrageres, le ray-grass anglais (RG) et le dactyle (D), utilisees dans l'Ouest de la France. En effet, ii est apparu interessant de preciser !'influence du trefle blanc (TB) sur la valeur alimentaire de son association avec ces graminees. Cette etude a ete effectuee simultanement sur des fourrages coupes distribues a des moutons en cage de digestibilite et sur des echantillons preleves a chaque cycle du paturage de jeunes bovins.

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Accumulation Of Solar Energy By Plants And Energetic Nutritive Value Of Tall Fescue (Festuca Arundinacea Schreb.) At Different Cutting Frequencies, V P. Spasov, D S. Kornyshev May 2025

Accumulation Of Solar Energy By Plants And Energetic Nutritive Value Of Tall Fescue (Festuca Arundinacea Schreb.) At Different Cutting Frequencies, V P. Spasov, D S. Kornyshev

IGC Proceedings (1977-2023)

The prevailing approach for developing fodder base in the North-Western economic region of the USSR is grass feed pro­duction. So, choosing plants which should maximize the accumulation of solar energy and provide high yields of quality satisfying cattle requirements is of exclusive importance. Our many year studies of different perennial grasses showed that tall fescue is one of the best to use solar energy in the given conditions of environment. So the experiment was carried out in 1979-1986 with the aim of determining solar energy accumu­lation and energetic nutritive value of this crop at different cutting frequencies.

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Bio-Agronomic Traits And Nutritional Value In Italian Ryegrass Varieties, N Berardo, C Locatelli, R Paoletti, L Valdicelli, M Odoardi May 2025

Bio-Agronomic Traits And Nutritional Value In Italian Ryegrass Varieties, N Berardo, C Locatelli, R Paoletti, L Valdicelli, M Odoardi

IGC Proceedings (1977-2023)

Italian ryegrass (Lolium multiflorum Lam. var. Italicum) is native to the Po valley. Persistent populations of this species represent the main grass component of the irrigated permanent meadows in this area (Rotili et al., 1985). The subspecies Ital­icum (biannual, non alternative) and Westerwoldicum (annual, alternative) are at present the most important cultivated grasses in Italy, and are grown either as component in the poliphytic meadows or as catch crop, followed by maize for silage or soybean. Lolium multiflorum is considered of great interest as forage crop in the high fertile soils of Po valley (Tana and Seb­astiani, 1981 …

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Composition Of The Diet Of Cattle Grazing In Integrated Sown Tropical Pasture-Savannah Production Systems, R R. Vera, B Rivera, J H. Weniger May 2025

Composition Of The Diet Of Cattle Grazing In Integrated Sown Tropical Pasture-Savannah Production Systems, R R. Vera, B Rivera, J H. Weniger

IGC Proceedings (1977-2023)

Extensive cow-calf grazing systems in the Eastern Plains of Colombia are characterized by the use of very limited areas of sown pastures, amounting to generally less than 5 % of the area (Kleiheisterkamp and Habich, 1985; Sere and Estrada, 1985). It has also been shown (Kleinheisterkamp and Habich, 1985) that management practices applied to the breeding herd are few and irregularly utilized. It is thus hypothesized that the tran­sition of extensive cow-calf operations to more productive beef breeding systems will initially require the introduction of pastures with minimum management requirements that will allow a gradual evolution of existing grazing systems. …

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Effect Of Water Deficit On The Quality Of Lucerne (Medicago Sativa L.), G Lemaire, J L. Durand, M Lila May 2025

Effect Of Water Deficit On The Quality Of Lucerne (Medicago Sativa L.), G Lemaire, J L. Durand, M Lila

IGC Proceedings (1977-2023)

The nutritive value for ruminants of lucerne forage may be characterized both by the In Vitro Digestibility of Dry Matter (IVDDM) and by the Nitrogen content (N % ) which determine the energy and nitrogen values. These two characteristics are linked to the Leaf/Stem ratio (L/S) (Demarquilly, 1966). But for the same L/S ratio, different IVDDM and N % can be obtained according to the biochemical composition of leaves and stems separately. The effect of water deficit on the quality of forage of lucerne can be considered separately on the morphological compo­sition and on the biochemical composition. L/S is generally …

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Millet Based Cropping Systems With Forage Legumes For Improving Nutritive Values Of Crop Residues In The Sahelian Zone, C Renard, M Garba May 2025

Millet Based Cropping Systems With Forage Legumes For Improving Nutritive Values Of Crop Residues In The Sahelian Zone, C Renard, M Garba

IGC Proceedings (1977-2023)

The crop residues from sorghum and pearl millet represent an important potential feed resource. In 1981, 55.2 and 51.4 million tons of crop residues were produced from sorghum and pearl millet respectively (Kossila, 1985). Pearl millet is the most prevalent cereal in the Sahel and farmers usually leave millet stover in the field after grain harvest. Grazing livestock then walk through the fields and eat first the leaves and later the stalks. Farmers also use millet stalks as fuel, and for con­struction. During the long Sahelian dry season, cattle rely mos­tly on crop residues for their subsistence and in dry …

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The Effect Of Supplementation Of Setaria Grass With Cassava Or Gliricidia Leaves On Growing Sheep, S S. Sitorus May 2025

The Effect Of Supplementation Of Setaria Grass With Cassava Or Gliricidia Leaves On Growing Sheep, S S. Sitorus

IGC Proceedings (1977-2023)

In tropical areas, grasses are the main forage offered to rumi­nant, eventhough they have low quality such as native grass crude protein of about 7-12 %, and napier grass about 9-14 %. Recently in Indonesia, plantation of setaria grass was introduced especially in transmigration and watershed areas, regardless its nutritive value, and its influence on animal performances. Similar with other grasses, setaria grass has a low nutritive value and when fed alone can not meet the pro­duction requirements. More over, Jones et al. (1970) reported that cattle with setaria in a grazing system can lead to the death due to …

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Proportion Of Leaves And Floral Tillers And Nutritional Quality Of Prolific And Non-Prolific Seed Yielding Cultivars Of Smooth Bromegrass, S Bittman, Z Mir, D H. Mccartney May 2025

Proportion Of Leaves And Floral Tillers And Nutritional Quality Of Prolific And Non-Prolific Seed Yielding Cultivars Of Smooth Bromegrass, S Bittman, Z Mir, D H. Mccartney

IGC Proceedings (1977-2023)

In the semi-arid clima\e of the Canadian Prairies most herb­age production occurs in May and June whereas the grazing season lasts until October. Summer and fall pasture consists largely of mature, quiescent vegetation with senescent leaves and lignified stems. Floral tillers of some temperate grasses have a higher rate of leaf senescence than non-floral tillers (Bittman et al., 1988) and are rejected by grazing cattle. Floral tillers of Stipa viridula Trin. and Pascopyrum sinithii (Rydb.) Love had 2 and 4 % units lower protein content and digesti­bility, respectively, than non-floral tillers (White, 1983). In the Parkland region of the prairies, …

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Nutritive Value And Production Of Cool-Season Under Two Harvest Regimes, T Kunelius May 2025

Nutritive Value And Production Of Cool-Season Under Two Harvest Regimes, T Kunelius

IGC Proceedings (1977-2023)

In Atlantic Canada, Phleum pratense L. is the predominant grass species grown for conserved feed and pasture. Although P. pratense is a persistent grass species under 2 cut systems (Kunelius and McRae, 1986) it does not perform adequately under intensive management. Secondary grasses for the Atlan­tic region include Dactylis glomerata L., Festuca pratensis L., Bromus inermis Leyss., and Lolium-Festuca hybrids. There is considerable interest in the performance and quality of second­ary grasses and those of Lolium-Festuca hybrids in particular, under various management regimes. In this experiment the growth and quality of several cool season grasses were deter­mined under four and …

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Change In Composition And Quality Of A Temperate Species Mixed Pasture Grazed Over Three Years At Two Stocking Rates With And Without Nitrogen Fertilizer, K Betteridge, D A. Haynes, J R. Sedcole May 2025

Change In Composition And Quality Of A Temperate Species Mixed Pasture Grazed Over Three Years At Two Stocking Rates With And Without Nitrogen Fertilizer, K Betteridge, D A. Haynes, J R. Sedcole

IGC Proceedings (1977-2023)

Animal production is not only affected by pasture mass and its seasonal distribution but also by the composition and qual­ity of the consumed pasture (Rattray and Clark, 1984). Legumes have a higher nutritive value than grasses, but may be suppressed by application of artificial nitrogen (N) when soil N status is low (Ball and Field, 1982). Nutritive value of pasture falls as it matures due to a rise in fibrous tissue and a decline in digestibility, and mineral and protein content (Ulyatt, 1978). However, vegetative growth can be prolonged and quality maintained by greater utilisation of pasture in late spring …

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Differences In Nutritive Value Of Lecerne Cut In Morning And Afternoon Hours, F Plhak May 2025

Differences In Nutritive Value Of Lecerne Cut In Morning And Afternoon Hours, F Plhak

IGC Proceedings (1977-2023)

Beside crude fibre and protein, the photosynthetic products - nonstructural carbohydrates - are further important substances of digestible dry matter in lucerne fodder. They par­ticipate in dry matter by 15 %. In contrast to crude fibre and protein, the content of photosynthates changes expressively during the day (Plhak, 1984). The changes reach in leaves by 20 %, in stems 5 % of dry matter. The changes depend on the length and intensity ofsolar irradiance (Plhak, 1981) and cause specific weight alteration of leaves (Chatterton et al., 1972). Such variations in photosynthates content can cause some changes in dry matter digestibility …

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Productivity And Nutritive Values In Three Ecotypes Of Trichloris Crinita, Native Forage Grass Of The Arid Zones Of Argentina, J Silva Colomer, J B. Cavagnaro, J Lemes, M Medero May 2025

Productivity And Nutritive Values In Three Ecotypes Of Trichloris Crinita, Native Forage Grass Of The Arid Zones Of Argentina, J Silva Colomer, J B. Cavagnaro, J Lemes, M Medero

IGC Proceedings (1977-2023)

Livestock activity in the arid and semiarid regions of the west central part of Argentina is mainly based on native grasses. On the plain areas of Mendoza province, the most important grasses are perennial, warm-season species, adapted to water stress, high temperature and high irradiance conditions (Cavagnaro, 1988). Mean rainfall of the area reached at 264 mm during the growing season. Trichloris crinita is one of the outstanding species in many areas of the mentioned region. In order to preserve genetic variability of natural popula­tions, IADIZA (Instituto Argentino de Investigacion de Zonas Aridas) initiated a germplasm bank of native forage …

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The Intake And Digestibility Of Dry Mature Subterranean Clovers, G B. Taylor, R C. Rossiter, D B. Purser, W J. Collins May 2025

The Intake And Digestibility Of Dry Mature Subterranean Clovers, G B. Taylor, R C. Rossiter, D B. Purser, W J. Collins

IGC Proceedings (1977-2023)

Although sheep grazing dry subterranean clover (Trifolium subterraneum L.) pasture may maintain body weight for the early part of summer, they usually lose weight during late summer and autumn, with consequent adverse effects on pro­ductivity (Purser, 1980). A decline in the digestibility of clover during plant senescence (Hume and Purser, 1975) is believed to be an important component of the reduced nutritive value of this dry feed. In a survey of dry mature stem material from a range of early flowering subterranean clover genotypes, Taylor et al. (1987a) found that in vitro digestibility ranged between 41 and 62 % …

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Forage Production And Nutritive Value Of Cynodon Spp. Under Grazing In Puerto Rico, L E. Tergas, Y Q. Cabrera, A Sotomayor Rios May 2025

Forage Production And Nutritive Value Of Cynodon Spp. Under Grazing In Puerto Rico, L E. Tergas, Y Q. Cabrera, A Sotomayor Rios

IGC Proceedings (1977-2023)

Livestock production in the tropics is highly dependent on forages to meet the nutritional requirements of grazing cattle. However, seasonal fluctuations on dry matter production and nutritive value are limiting factors affecting animal perform­ance and production. Stargrass Cynodon nlemfuensis var. nlemfuensis is a highly productive grass recommended for intensive management in the humid tropics of Puerto Rico (Vicente-Chandler et al., 1974). Bermuda Cynodon dactylon and Stargrass produced high yields of quality forage and persisted under intensive grazing in the humid northern coastal plains of Puerto Rico; however, the average production of both grasses was related to rainfall distribution, decreasing during …

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Prediction Of The Yield Of Nutritive Matter In Some Autumn Cut Forage Catchcrops, K Kastelic, J A. Nikolic, A Pavlicevic, T Stupica, J Cizec May 2025

Prediction Of The Yield Of Nutritive Matter In Some Autumn Cut Forage Catchcrops, K Kastelic, J A. Nikolic, A Pavlicevic, T Stupica, J Cizec

IGC Proceedings (1977-2023)

Arable land often lies fallow for a time, which provides an opportunity for growing fodder catchcrops between two main crops. This practice should improve the soil structure, conserve soil moisture, eliminate many weeds, maximise land use and enable easier preparation for the subsequent main crop. More­over, subsequent cereal yields may be increased by preceding forage legume crops (Papastylianou and Samios, 1987). The aim of present investigation was to determine the concentration of promising autumn cut catchcrops (D-value) and to assess the possibility of predicting the yield of digestible organic matter (DOM) from the yield of green or dry matter (DM).

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Fiber Composition Of Successive Cuts Of Lucerne, D Kolarski, J Pavesic-Popovic,, O Krstic, K Koljajic May 2025

Fiber Composition Of Successive Cuts Of Lucerne, D Kolarski, J Pavesic-Popovic,, O Krstic, K Koljajic

IGC Proceedings (1977-2023)

The plant cell walls contain lignin, cellulose, hemicellulose, fiber bound protein and fiber bound minerals. Their nutritive value is limited by their degree of lignification, while cell con­tents is not limited (Barton et al., 1977). Type and extent oflig­nin-polysaccharide bounding could affect digestion more than amount of lignin (Jung et Fahey, 1983). The purpose of these studies was to determine chemical and fiber composition of four cuts of lucerne (Medicago sativa, CV Kl).

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Relationship Between The Mineral Content In Pastures And The Content Of These Elements In Blood Serum In Dairy Cows, A Lachowski, I Kuczynska, W Wojciechowski May 2025

Relationship Between The Mineral Content In Pastures And The Content Of These Elements In Blood Serum In Dairy Cows, A Lachowski, I Kuczynska, W Wojciechowski

IGC Proceedings (1977-2023)

Grass tetany, a conditioned Mg deficiency of improper K: (Ca + Mg) ratio is a nutritional problem in various parts of Poland. The aim of the investigations was to determine to what degree the mineral content of grasses in the pastures influenced the mineral content in blood serum in dairy cows. This is very important when the animals are grazing and when cattle slurry is used on grasslands. In the literature we can find opinion con­sidering hypomagnaesemia as a metabolic disorder of rumin­ants typified by low blood serum Mg and generally accompanied by hypocalcemia. It has been related to low …

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Characterization Of Biological Properties Of Fodder Value Of Dandelion, Taraxacum Officinale Web., M Falkowski, I Kukulka, S Kozlowski May 2025

Characterization Of Biological Properties Of Fodder Value Of Dandelion, Taraxacum Officinale Web., M Falkowski, I Kukulka, S Kozlowski

IGC Proceedings (1977-2023)

In recent years the quantities of dandelion appearing on newly established grasslands has increased quite significantly. In such conditions it can no longer be treated as a meadow herb whose fodder value, according to European literature, equals half of that of valuable fodder plants. Becoming a weed, dan­delion has been the object of investigations on ways of elimina­ting it from the sward by means of herbicides (Schlotter et al., 1988). At the same time, experiments are under way on biologi­cal properties of dandelion with the aim to explain the causes of its expansion. It was found that there is an …

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Effect Of Fertilizers On Cutting On Time On Chemical Composition Of Sward From Permanent Meadow, A Golob, Zdenka Berloznik, M Leskosek, Vekoslava Stibilj May 2025

Effect Of Fertilizers On Cutting On Time On Chemical Composition Of Sward From Permanent Meadow, A Golob, Zdenka Berloznik, M Leskosek, Vekoslava Stibilj

IGC Proceedings (1977-2023)

Ecological problems and surpluses of milk and meat have given rise to less intensive systems of grassland utilisation. One of such system is utilisation of air nitrogen via legume sym­biosis with nitrogen fixing bacteria. In Slovenia, where conditions for legume growth are more favourable than in NW Europe, natural meadows fertilized with P and K only give reasonable yields - on average around 7 t DM per ha (Leskosek, 1981). Most legumes suffer after fre­quent defoliation so such meadows should be defoliated only 2- 3 times during the growing season. Under less frequent cutting regime nutritive value of forage is …

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Determination Of Condensed Tannins In Tropical Legume Forages, L Telek May 2025

Determination Of Condensed Tannins In Tropical Legume Forages, L Telek

IGC Proceedings (1977-2023)

The effect of condensed tannins (proanthocyanidins) in ruminant nutrition is complex and needs further interdiscipli­nary reinvestigations with improved analytical methods. With the « cell rupture » theory of legume pasture bloat (Howarth et al., 1978), the role of condensed tannins seems to be secondary; they are acting as protein precipitants (Goplen et al., 1980) and inhibiting microbiological proliferation in cell­ular spaces (Howarth et al., 1982). Their assumed interference with digesting enzymes in vivo is doubtful (Mole and Water­man, 1985). On the importance of condensed tannins in nutrition, several reviews were published (McLeod, 1974; Tempel, 1982; Kumar and Singh, 1984 and …

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Screening Sericea Lespedeza Germplasm For Tannin Concentration In The Leaves And Herbage Palatability, J C. Petersen, J A. Mosjidis, N S. Hill May 2025

Screening Sericea Lespedeza Germplasm For Tannin Concentration In The Leaves And Herbage Palatability, J C. Petersen, J A. Mosjidis, N S. Hill

IGC Proceedings (1977-2023)

Several million hectares in the subtropical world are currently used as grazing land for beef and dairy cattle, how­ever, in many cases animal production is very low. To improve animal nutrition, cultivated legume species can be introduced. Sericea lespedeza has potential and could be utilized in the acid soils of the· subtropics. Generally, sericea is low in palatability and nutritive value because its leaves contain tannins, which have long been associ­ated with low intake and reduced digestibility. Tannins are responsible for an astringent or bitter taste caused by the pre­cipitation of salivary glycoprotein (Goldstein and Swain, 1963). Chopping or macerating …

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