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Performance Of Dual-Purpose Cows On A Native Pasture-Arachis Pintoi Association In The Humid Tropics Of Mexico, E. Castillo-Gallegos, J. Jarillo-Rodríguez, E. Ocaña-Zavaleta, B. Marín-Mejía, L. 'T Mannetje, A. Aluja-Schunemann Jun 2023

Performance Of Dual-Purpose Cows On A Native Pasture-Arachis Pintoi Association In The Humid Tropics Of Mexico, E. Castillo-Gallegos, J. Jarillo-Rodríguez, E. Ocaña-Zavaleta, B. Marín-Mejía, L. 'T Mannetje, A. Aluja-Schunemann

IGC Proceedings (1977-2023)

Native grasslands (NG) are the main feed supply of dual-purpose (DP) cows of the Mexican humid tropics. NG comprise about 85% of Paspalum, Axonopus and Cynodon species, about 5% of native legumes, mainly of Desmodium, and the remaining 10% are narrow and broad leafed weeds. Arachis pintoi (AP) is a persistent grazing tolerant tropical legume. In association with sown grasses, it has improved dry matter (DM) yield, nutritive quality of forage, and milk yield up to 9 kg/cow/day (González et al., 1996). The objective was to determine if productive performance of DP cows could be improved by …

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The Dry Matter Yield And Nutritive Value Of Wet Tolerant Tropical Forage Legumes In Single Cropping Or Mixed Cropping With Gramineous Forage Crops In Drained Paddy Field, Manabu Tobisa, Y. Nakano, K. Okano, Masataka Shimojo, Yasuhisa Masuda Jun 2023

The Dry Matter Yield And Nutritive Value Of Wet Tolerant Tropical Forage Legumes In Single Cropping Or Mixed Cropping With Gramineous Forage Crops In Drained Paddy Field, Manabu Tobisa, Y. Nakano, K. Okano, Masataka Shimojo, Yasuhisa Masuda

IGC Proceedings (1977-2023)

In Japan the production of rice has been controlled since the 1970's and some parts of the paddy fields have been laid off for forage production. However, in poorly-drained fields or fields with high ground water table, forage species with high tolerance of wet conditions are required. The tropical forage legumes Aeschynomene americana cv. Glenn (Glenn) and Macroptilium lathyroides (L.) Urb. cv. Murray (phasey bean) have a high wet endurance (Bishop et al., 1985; Tobisa et al., 1999) and show high dry matter productivity (Skerman et al., 1988; Tobisa et al., 1999). The objective of this …

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Desmanthus: A New Forage Legume To Improve Wool Growth In Tropical Australia, J. H. De A. Rangel, Carlos A. M. Gomide Jun 2023

Desmanthus: A New Forage Legume To Improve Wool Growth In Tropical Australia, J. H. De A. Rangel, Carlos A. M. Gomide

IGC Proceedings (1977-2023)

In tropical Australia, very short and erratic wet seasons are the critical factors in determining forage growth and animal production (Wheeler & Freer, 1986). Grasses are highly susceptible to low rainfall and animal production in such conditions become strictly seasonal. Improvements in meat and wool production by the introduction of stylo species (Stylosanthes sp.) into natural grasslands have been intensively reported (Gillard & Winter, 1984). However, there are currently no suitable introduced legumes for the c.28 million ha of Mitchell grass (Astrebla spp.) plains in heavy clay soils of western North Queensland, grazed predominately by wool producing Merino …

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Recent Advances In Stylosanthes Research In Tropical America, Bela Grof, Celso D. Fernandes, Jaqueline R. Verzignassi Jun 2023

Recent Advances In Stylosanthes Research In Tropical America, Bela Grof, Celso D. Fernandes, Jaqueline R. Verzignassi

IGC Proceedings (1977-2023)

The potential of neotropical savannas is very large for pasture-based livestock systems. There are 250 million ha of well-drained lowland savannas in the American tropics. Over 200 million ha are situated in the Cerrados region of Brazil. The Cerrados support 42% of the national herd. Although these ranges support large populations of livestock, productivity is generally low. Poor nutritive value of native pastures and monospecific swards of Brachiaria spp. is the principal cause of this low productivity, especially in the dry season when these grasslands often provide no more than 60% of the animal's maintenance requirements. The best option to …

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Desmodium Velutinum: A High-Quality Shrub Legume For Acid Soils In The Tropics, R. Schultze-Kraft, M. Peters, N. Vivas, F. Parra, L. H. Franco Jun 2023

Desmodium Velutinum: A High-Quality Shrub Legume For Acid Soils In The Tropics, R. Schultze-Kraft, M. Peters, N. Vivas, F. Parra, L. H. Franco

IGC Proceedings (1977-2023)

Drought tolerant legume shrubs can enhance the sustainability of smallholder production systems in the tropics through the provision, year-round, of high-quality feed and through their positive effect on soil. Desmodium velutinum (Willd.) DC. is one of the few shrub species that have been identified as (1) well adapted to acid tropical soils and (2) of good nutritive value (Schultze-Kraft, 1996). It is a perennial native to SE Asia and tropical Africa growing up to 3 m high, the velutinous (velvety) surfaces of its 1-foliolate leaves being a characteristic feature. It grows well on soils ranging from pH 4.0 to alkaline, …

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Effect Of Type Of Tree Leaves On Intake, Nutrient Utilisation And Rumen Fermentation Pattern In Goat Fed With Cenchrus Ciliaris Grass, S. Singh, S. S. Kandu, L. K. Karnani Jun 2023

Effect Of Type Of Tree Leaves On Intake, Nutrient Utilisation And Rumen Fermentation Pattern In Goat Fed With Cenchrus Ciliaris Grass, S. Singh, S. S. Kandu, L. K. Karnani

IGC Proceedings (1977-2023)

Grasses and tree leaves/shrubs are the major feeds available from grasslands and grazing fields. There is though a dearth of information on the nutritional value of tree foliage although available information was collated by Shelton et al. (1995). This study evaluated the relative nutritive value of two foliages for goats.

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Ensiling Characteristics And Nutritive Value Of Browse/Maize Forage Mixtures, F. B. Bareeba, H. Kato, Elly N. Sabiiti Jun 2023

Ensiling Characteristics And Nutritive Value Of Browse/Maize Forage Mixtures, F. B. Bareeba, H. Kato, Elly N. Sabiiti

IGC Proceedings (1977-2023)

The practice of growing fodder tree and shrubs is being advocated for and adopted in smallholder dairy production systems. In Uganda, Calliandra calothyrsus, Gliricidia sepium, and Leucaena leucocephala have been identified and recommended as the most suitable species (Sabiiti, 2001). However tree foliage contains toxic compounds (Lowry, 1990), which may be alleviated by ensiling. The objective of the experiment was to study the ensiling characteristics of browse/ maize forage mixtures and their nutritive value when fed to lactating dairy cows.

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The Effect Of Fermentation Of Calliandra Calothyrsus, Gliricidia Sepium, Leucaena Leucocephala And Maize Forage On Rumen Degradation And Microbial Protein Synthesis, H. Kato, F. B. Bareeba, Elly N. Sabiiti, C. Ebong Jun 2023

The Effect Of Fermentation Of Calliandra Calothyrsus, Gliricidia Sepium, Leucaena Leucocephala And Maize Forage On Rumen Degradation And Microbial Protein Synthesis, H. Kato, F. B. Bareeba, Elly N. Sabiiti, C. Ebong

IGC Proceedings (1977-2023)

Ensiling as a means of storing green fodder by acidification has a profound effect on the chemical composition of the resultant silage. Ensiling could therefore, ameliorate the effects of anti-nutritional factors associated with browses. The objective of the experiment was to determine fermentation characteristics and rumen degradation (D) of ensiled Calliandra calothyrsus (C), Gliricidia sepium (G), Leucaena leucocephala (L) and maize forage.

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The Effects Of Exposure To Endophyte-Infected Tall Fescue Seed On Faecal And Urine Concentrations Of Ergovaline And Lysergic Acid In Mature Gelding Horses, C. L. Schultz, S. L. Lodge-Ivey, A. M. Craig, James R. Strickland, L. P. Bush Jun 2023

The Effects Of Exposure To Endophyte-Infected Tall Fescue Seed On Faecal And Urine Concentrations Of Ergovaline And Lysergic Acid In Mature Gelding Horses, C. L. Schultz, S. L. Lodge-Ivey, A. M. Craig, James R. Strickland, L. P. Bush

IGC Proceedings (1977-2023)

Despite the good nutritive value of endophyte-infected tall fescue, consumption by livestock results in a decrease in both reproductive and growth performance due to ergot alkaloids produced by an endophytic fungus (Cross et al., 1995). Little research has investigated the metabolic fate of ergot alkaloids and/or their metabolites in grazing horses. Thus, the objectives of this experiment were: a) to determine concentrations of ergovaline (EV) and lysergic acid (LA) in the faeces and urine of geldings exposed to tall fescue seed over a time course experiment and b) to measure the effects of alkaloid-containing tall fescue on nutrient digestibility …

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Stylos: The Broad Acre Legumes Of N Australian Grazing Systems, John P. Rains Jun 2023

Stylos: The Broad Acre Legumes Of N Australian Grazing Systems, John P. Rains

IGC Proceedings (1977-2023)

Early accidental introduction of Stylosanthes humilis into the N Australian savannas in the early 20th century and its contrived spread by the late 1960s led to the release of more perennial types. Townsville Stylo, as it was known, colonised large areas and had reached its climatic and agronomic limits by the 1970s. It had a major impact on beef production in areas where natural carrying capacities were relatively low. The precedent of Townsville Stylo directed attention to the genus Stylosanthes. This impact continued until 1974 when anthracnose virtually wiped it out. Fortunately 2 other Stylosanthes species, S. hamata cv. Verano …

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Leucaena In Northern Australia: A Forage Tree Legume Success Story, B. F. Mullen, H. M. Shelton, Scott A. Dalzell Jun 2023

Leucaena In Northern Australia: A Forage Tree Legume Success Story, B. F. Mullen, H. M. Shelton, Scott A. Dalzell

IGC Proceedings (1977-2023)

Leucaena leucocephala (leucaena) is a long-lived, perennial forage tree legume of very high nutritive value for ruminant production. In northern Australia, leucaena is direct seeded into hedgerows 5-10m apart, with grass species such as buffel grass (Cenchrus ciliaris) planted in the inter-row to form a highly productive and sustainable grass-legume pasture that cattle graze directly. It generally is grown on deep, fertile soils in sub-humid environments with average rainfall of 600-800mm/year. Steer gains of 275-300kg/head per year are achieved, with short-term daily gains over the main growing season > 1kg/head. Being very deep-rooted, leucaena exploits moisture beyond the reach …

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Aeschynomene And Carpon Desmodium: Legumes For Bahiagrass Pasture In Florida, Lynn E. Sollenberger, R. S. Kalmbacher Jun 2023

Aeschynomene And Carpon Desmodium: Legumes For Bahiagrass Pasture In Florida, Lynn E. Sollenberger, R. S. Kalmbacher

IGC Proceedings (1977-2023)

Soils and climate are very diverse across Florida, and no single legume has state-wide adaptation. However, aeschynomene (Aeschynomene americana), an annual, and carpon desmodium (Desmodium heterocarpon) cv. Florida, a perennial, are the most commonly used legumes for grazing on the central and southern peninsula, which produces 65% of Florida's beef calves. Both grow well with bahiagrass (Paspalum notatum), which is the main pasture grass, with ~1M ha state-wide. Circa 65K ha of bahiagrass contain at least limited quantities of aeschynomene and 14K ha contain carpon desmodium.

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Rhizoma Peanut: More Than A ‘Lucerne’ For Subtropical Usa, M. J. Williams, K. H. Quesenberry, G. M. Prine, C. B. Olson Jun 2023

Rhizoma Peanut: More Than A ‘Lucerne’ For Subtropical Usa, M. J. Williams, K. H. Quesenberry, G. M. Prine, C. B. Olson

IGC Proceedings (1977-2023)

Rhizoma peanut (Arachis glabrata) was introduced to Florida from South America in the 1930s. Selections 'Arb' (PI 118457) and 'Arblick' (PI 262839) were released in the 1960s, but their use was very limited due to slow establishment and low productivity. The University of Florida released 'Florigraze' (PI 421707) in 1978 and 'Arbrook' (PI 262817) in 1986. These cultivars produced much higher dry matter yields. Thereafter, rhizoma peanut began to gain commercial acceptance. These cultivars are used throughout the Gulf Coast region of the USA for commercial hay production, pasture, creep grazing, silage, balage, and living mulch (French et …

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Annual Legumes As An Alternative For Animal Feeding In Cuba, María Felicia Díaz, C. Padilla, E. Lon Wo, M. Castro, R. S. Herrera, R. O. Martínez Jun 2023

Annual Legumes As An Alternative For Animal Feeding In Cuba, María Felicia Díaz, C. Padilla, E. Lon Wo, M. Castro, R. S. Herrera, R. O. Martínez

IGC Proceedings (1977-2023)

Studies conducted in Cuba have demonstrated the importance of the agronomic and nutritional performance of the species Vigna unguiculata (cowpea), Canavalia ensiformis (jackbean), Stizolobium niveum (mucuna), Lablab purpureus (dolicho) and Glycine max (soybean) as feed sources for non-ruminant species. Under Cuban tropical conditions, and with minimum agricultural inputs, jackbean, dolicho and mucuna have attained forage yields between 4 and 6 t dry matter (DM)/ha and grain yields between 2.57 and 3.41 t/ha and cowpea and soybean have given yields of between 1 and 2 t/ha (Díaz 2000). This study was carried out to determine the chemical composition of grains and …

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Relative Yields And Nutritive Value Of Whole Crop Rice Harvested On Four Successive Dates For Forage In Korea, Jong-Geun Kim, Y. C. Lim, E. S. Chung, S. H. Yoon, S. Seo, M. J. Kim Jun 2023

Relative Yields And Nutritive Value Of Whole Crop Rice Harvested On Four Successive Dates For Forage In Korea, Jong-Geun Kim, Y. C. Lim, E. S. Chung, S. H. Yoon, S. Seo, M. J. Kim

IGC Proceedings (1977-2023)

About four million tons of forages are fed to ruminants in Korea, but half of them rely on rice straw as roughage and 0.6 million tons of forage was imported. The lack of forage results in increased imports of concentrate feeds and increased production cost. Now, Korea has about 1.1 million ha of rice fields, but as a consequence of world trade negotiation, Korea will open the rice market from next year. It is expected that due to aging farmers and lower rice price, about 0.2 million ha of paddy field will not be cultivated for grain rice. Therefore, we …

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Nutritional Evaluation Of Banana Peelings From The Various Banana Varieties In Different Regions Of Uganda, J. Nambi-Kasozi, Elly N. Sabiiti, F. B. Bareeba, E. Sporndly Jun 2023

Nutritional Evaluation Of Banana Peelings From The Various Banana Varieties In Different Regions Of Uganda, J. Nambi-Kasozi, Elly N. Sabiiti, F. B. Bareeba, E. Sporndly

IGC Proceedings (1977-2023)

In Uganda, peri-urban agriculture is very important in sustaining livelihoods of the increasing population in urban and peri-urban (U & PU) areas. However, this form of agriculture has a number of problems, feed shortage being the most important. The agricultural produce brought in from the rural areas is marketed in raw form hence increasing the crop wastes in the market areas. The crop wastes, if properly sorted, can serve as alternative feeds for the animals kept in the U & PU areas. Banana (Musa spp) peelings (BP) constitute the largest proportion of all the crop wastes in most …

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Changes In Grass Quality Of Coastal Meadows In Estonia, Tiina Köster, Karin Kauer, R. Viiralt, A. Selge Jun 2023

Changes In Grass Quality Of Coastal Meadows In Estonia, Tiina Köster, Karin Kauer, R. Viiralt, A. Selge

IGC Proceedings (1977-2023)

In Estonia the reason for reduction in coastal meadows and expansion of the stands of the common reed (Phragmites australis) is the discontinuation of traditional use of grasslands which were previously grazed and cut. Phragmites australis usually produces dense and monospecific stands at the waterline, where species richness is low. It can survive in ungrazed shore meadows, but it suffers from grazing (Tyler, 1969). The investigated Phragmitetum australis association had been influenced by grazing activities, but it remained rather sparse and due to that had relatively low productivity, reaching 3.11 t DM/ha. Traditionally coastal meadows have been used …

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Diversity And Variation In Nutritive Value Of Plants Growing On 2 Saline Sites In Southwestern Australia, Hayley C. Norman, R. A. Dynes, D. G. Masters Jun 2023

Diversity And Variation In Nutritive Value Of Plants Growing On 2 Saline Sites In Southwestern Australia, Hayley C. Norman, R. A. Dynes, D. G. Masters

IGC Proceedings (1977-2023)

In south-western Australia 10% or 1.8 million ha of the farmed area is affected by dryland salinity and a further 6 million ha are at risk of salinity (NLWRA, 2001). Animal production from saltbush (Atriplex spp.)-based pasture systems represents the most likely large-scale opportunity for productive use of saline land in the short to medium term. Feeding saltbush-based pastures as a maintenance feed during the prolonged autumn feed gap typical in Mediterranean-type climates maximises their economic value. The aim of this study was to explore the diversity and nutritive value of plants that typically persist in saltbush-based saltland pastures.

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Nutritional Characteristics Of Four Species Of Native Pastures From The Highlands Of Central Mexico, O. A. Castelán, A. A. Rayas, A. Espinoza, J. Estrada, C. Arriaga, F. Mould Jun 2023

Nutritional Characteristics Of Four Species Of Native Pastures From The Highlands Of Central Mexico, O. A. Castelán, A. A. Rayas, A. Espinoza, J. Estrada, C. Arriaga, F. Mould

IGC Proceedings (1977-2023)

Research in Mexico has been devoted to nutritional characterisation of improved pastures, but native species of grasses have not been studied. The aim of this experiment was to evaluate the nutritional value of four species of native pastures and composite samples of them.

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Seasonal Variation Of Forage Productivity And Quality Of Communally Managed Grassland In The N’Komati River Basin, D. W. Nguluve, C. Menezes, A. Buluveze, A. P. Laita Jun 2023

Seasonal Variation Of Forage Productivity And Quality Of Communally Managed Grassland In The N’Komati River Basin, D. W. Nguluve, C. Menezes, A. Buluveze, A. P. Laita

IGC Proceedings (1977-2023)

Livestock production is increasing in Mozambique. This trend, however, is facing such challenges as land tenure, erratic and not well-distributed rainfall (resulting in floods or droughts), overgrazing, wildfires, and the unsustainable resource management practices of communities. The study objectives were to evaluate forage species occurrence and seasonal variation and to estimate grassland productivity, nutritive value and savanna carrying capacity.

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Variations In Nutritive Values Of Two Different Desert Forage Plants Growing In The United Arab Emirate Environment, T. Ksiksi, A. Bamakhrama, M. Satri Jun 2023

Variations In Nutritive Values Of Two Different Desert Forage Plants Growing In The United Arab Emirate Environment, T. Ksiksi, A. Bamakhrama, M. Satri

IGC Proceedings (1977-2023)

Forage plants in desert environments have to withstand both shortages in resources and over grazing during most years. This variation in resource availability is associated with variation in the nutritive values of the plant species. Moreover, these differences are not only seasonal but also vary between plant parts. Variations in nutritive values in key species, therefore, need to be better understood in order to sustainably feed livestock (Abdurazak et al., 2000), because effective management requires adequate knowledge of the interaction between the animal, the pasture and the environment (Kassilly, 2002). Forage toxicity could, however, cause irreparable damage to production. …

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Factors Affecting Forage Quality Of Native Species In Iranian Rangelands, Hossein Arzani, J. Torkan, H. Kaboli, M. Zohdi Jun 2023

Factors Affecting Forage Quality Of Native Species In Iranian Rangelands, Hossein Arzani, J. Torkan, H. Kaboli, M. Zohdi

IGC Proceedings (1977-2023)

Animal performance is closely correlated with the nutrient value of the forage available and this is affected by different factors (Arzani et al., 2001). Crude protein content (CP), digestible dry matter (DDM) and metabolisable energy (ME) were considered particularly appropriate for evaluation of range forage quality. This paper reports on factors affecting the forage quality of range species grown in Iran.

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Determination And Comparison Of Forage Quality Of Five Species In Different Phenological Stages In Alborz Rangelands (Iran), A. Ahmadi, Hossein Arzani, A. A. Jaafari Jun 2023

Determination And Comparison Of Forage Quality Of Five Species In Different Phenological Stages In Alborz Rangelands (Iran), A. Ahmadi, Hossein Arzani, A. A. Jaafari

IGC Proceedings (1977-2023)

In order to evaluate grazing capacity and integrated management of rangelands and grasslands , it is necessary to be aware of the quality of range plants. Phenological (growth) stage has the greatest effect on forage quality with most of the qualitative indices decreasing with the progress of the phenological stage (Holecheck et al., 2001). This research studied the changes in forage quality for species in the Alborz rangelands.

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Variation In The Quality Of Forage Of Six Rangeland Species In Different Phenological Stages, Zeid Ahmadi, H. Arzani, Hossein Azarnivand Jun 2023

Variation In The Quality Of Forage Of Six Rangeland Species In Different Phenological Stages, Zeid Ahmadi, H. Arzani, Hossein Azarnivand

IGC Proceedings (1977-2023)

An understanding of forage quality is fundamental to the measurement of grazing capacity. In addition, knowledge of forage quality is necessary for planning grazing and developing range improvement and development programmes, such as planting and seeding of rangelands. Among the different factors that affect forage quality, phenological stage is particularly important (Cook, 1972; Caballero et al.,2001). The objective of this study was to investigate the effects of plant species, phenological stages and life form on forage quality indices.

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Chemical Composition And Gas Production Of Pasture Dominated By Artemisia Frigida And Carex Duriscula Species, G. Udval Jun 2023

Chemical Composition And Gas Production Of Pasture Dominated By Artemisia Frigida And Carex Duriscula Species, G. Udval

IGC Proceedings (1977-2023)

In vitro gas production from a feed sample incubated with a rumen fluid inoculum has been successfully used by Menke et al. (1979) and Steingass & Menke (1986) to predict the nutritive value of the substrate fermented. Recently, the gas test has been adapted so that the increase in gas production at a series of chosen time intervals is read off. The aim of this study was to describe the kinetics of fermentation of the feed incubated with reference to OMD, DMD, metabolisable energy (ME), neutral and acid detergent fiber (NDF, ADF), cellulose and lignin contents. Samples were harvested …

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Nutrient Accumulation In Leaves And Soft Twigs Of Moringa Oleifera Lam. At Different Growth Stages In Western Highland Of Cameroon, E. Tedonkeng Pamo, B. Boukila, J. R. Kana, F. Tendonkeng, L. B. Tonfack, M. C. Solefack Momo Jun 2023

Nutrient Accumulation In Leaves And Soft Twigs Of Moringa Oleifera Lam. At Different Growth Stages In Western Highland Of Cameroon, E. Tedonkeng Pamo, B. Boukila, J. R. Kana, F. Tendonkeng, L. B. Tonfack, M. C. Solefack Momo

IGC Proceedings (1977-2023)

Moringa oleifera belongs to the Moringaceae family and is considered to have its origin in the south of the Himalayan mountains. The species is being introduced into the highland zone of Cameroon. It is a tree which has many valuable properties and it is of great nutritional and scientific interest. The objective of this experiment was to evaluate nutrient composition in leaves and soft twigs of M. oleifera at different growth heights when grown in the Western Highland of Cameroon.

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Characterisation Of Herbage From Temperate Organic Pastures, E. Kuusela Jun 2023

Characterisation Of Herbage From Temperate Organic Pastures, E. Kuusela

IGC Proceedings (1977-2023)

Grazing is an essential part of organic dairy farming systems. Although the nutritive value of herbage and herbage availability determine the intake and nutrient supply for grazing cows, the composition of typical herbage from organic pastures has been unclear.

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Water-Soluble Carbohydrate (Wsc) Concentrations In Ireland And Norway Of Lolium Perenne Differing In Wsc Genotype And Receiving Varying Rates Of N Fertiliser, P. O'Kiely, L. Nesheim, P. Conaghan, F. P. O'Mara Jun 2023

Water-Soluble Carbohydrate (Wsc) Concentrations In Ireland And Norway Of Lolium Perenne Differing In Wsc Genotype And Receiving Varying Rates Of N Fertiliser, P. O'Kiely, L. Nesheim, P. Conaghan, F. P. O'Mara

IGC Proceedings (1977-2023)

Cultivars bred for elevated water-soluble carbohydrate (WSC) concentration may have improved grass ensilability and nutritive value. Increasing rates of application of N fertiliser generally reduce grass WSC concentration, although it is unknown if the response is similar for normal and elevated WSC genotypes or if these factors interact with growing conditions. This experiment evaluated the effects on grass WSC concentration of varying N fertiliser application rates to perennial ryegrass cultivars of high or normal WSC genotype grown in Ireland and Norway.

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Proanthocyanidins From Hedysarum, Lotus And Onobrychis Spp. Growing In Sardinia And Sicily And Their Antioxidant Activity, A. Tava, M. G. De Begedetto, D. Tedesco, G. Di Miceli, G. Piluzza Jun 2023

Proanthocyanidins From Hedysarum, Lotus And Onobrychis Spp. Growing In Sardinia And Sicily And Their Antioxidant Activity, A. Tava, M. G. De Begedetto, D. Tedesco, G. Di Miceli, G. Piluzza

IGC Proceedings (1977-2023)

Proanthocyanidins (PA), or condensed tannins, are a class of natural polyphenolic compounds, occurring in numerous plant species, including a number of economically significant forage legumes. These compounds are polymers of flavan-3-ols, and typically contain from 2 to 20 units. Their biological significance is still being debated and, in recent years, a great deal of attention has been focused on their role in ruminant nutrition. Evidence has indicated that PA, in a moderate concentration (0.5-5% DM), may have considerable importance in protecting dietary proteins against microbial degradation in the rumen, and in preventing bloat. The antioxidant activity (AA) is also an …

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Predicting Intake From Indigestible Fibre, Kenneth J. Moore, J. R. Russell Jun 2023

Predicting Intake From Indigestible Fibre, Kenneth J. Moore, J. R. Russell

IGC Proceedings (1977-2023)

Dry matter intake (DMI) of forages is often estimated as a reciprocal function of fibre concentration: DMI = fibre intake capacity / dietary fibre concentration (Mertens, 1987). This theoretical relationship is based on the concept that consumption of forage diets is limited by fill and that fibre represents the bulk of forage diets. This model, however, does not account for differences in DMI which should occur among forages with similar fibre concentrations but differing fibre digestibility. To account for these differences, we proposed an intake model where DMI is a reciprocal function of indigestible fibre concentration: DMI = c / …

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