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Full-Text Articles in Entire DC Network
Evaluation Of Mixed Pastures Including Trifolium Pratense Under Grazing, L A. Romero
Evaluation Of Mixed Pastures Including Trifolium Pratense Under Grazing, L A. Romero
IGC Proceedings (1977-2023)
The feeding system for milk and beef production in the Central Region of Santa Fe province (Argentine) is based on semipermanent and seasonal pastures along with conserved forage. Generally, legumes and grasses mixtures are used, the more usual species being lucerne (Medicago sativa), red clover (Trifolium pratense), prairie grass (Bromus catharticus), and also chicory (Cichorium intibus). These mixtures produce high amount of dry matter (DM) with a high nutritive value and an useful life span of three to five years. The objective of this research was to evaluate three mixed pastures with red clover …
Regrowth Of The Components Of Two Legume/Grass Associations Following Grazing On Acid Soils Of The Eastern Plains Of Colombia, J Fischer, D Thomas
Regrowth Of The Components Of Two Legume/Grass Associations Following Grazing On Acid Soils Of The Eastern Plains Of Colombia, J Fischer, D Thomas
IGC Proceedings (1977-2023)
The low nutritive status of the neotropical savannas may be improved by using a forage legume, either to supplement the savanna, or as a component of a grass-legume pasture to replace it. The two stoloniferous legumes Arachis pintoi and Desmodium ovalifolium form promising associations with various species of Brachiaria (Grof, 1985; Thomas and Grof, 1986), but there are very few data on their reaction to grazing. The relation between growth rate and the amount of leaf material is central to understanding how systems of grazing management influence plant relations. Because the palatability of the two legumes above differ, under contrasting …
Effect Of Regrowth Interval Upon Canopy Structure And Utilization Of Aeschynomene-Limpograss Pastures, J E. Moore, L E. Sollenberger, K A. Albrecht, P T. Beede, W F. Brown
Effect Of Regrowth Interval Upon Canopy Structure And Utilization Of Aeschynomene-Limpograss Pastures, J E. Moore, L E. Sollenberger, K A. Albrecht, P T. Beede, W F. Brown
IGC Proceedings (1977-2023)
During mid-summer through early autumn, limpograss ( Hemarthria altissima) herbage may have crude protein concentration below 7 %, and performance of growing cattle on limpograss pasture is often low (Sollenberger et al., 1988). Overseeding with Aeschynomene americana may improve for age intake and nutritive value. Deferred grazing of an aeschynomene-limpograss association has potential to provide high-quality forage into mid-autumn. Because grass and legume do not have similar growth rates, changes in canopy structure may occur during late season which influence forage utilization by grazing cattle. The objective was to compare plant canopy characteristics to diet composition and ingestive behavior of …
Effects Of Variation In Seasonal Grazing Pressure And Mechanisms Of Adaptation To Grazing In Lotononis Bainesii, H Fujita, L R. Humphreys
Effects Of Variation In Seasonal Grazing Pressure And Mechanisms Of Adaptation To Grazing In Lotononis Bainesii, H Fujita, L R. Humphreys
IGC Proceedings (1977-2023)
Lotononis bainesii is valued for its ready acceptance by stock, high nutritive value and cold tolerance, but its utility has been limited by the inexplicably high year to year variation in its contribution to the farm feed supply. Pott et al. (1983) showed that lotononis is short-lived; the persistence of yield depends more upon seedling regeneration than upon vegetative replacement through nodal rooting. No continuous fixed stocking regime from 7 to 28 sheep ha-1 favoured lotononis (Poot and Humphreys, 1983), and this paper discusses the effects of variations in seasonal stocking rate and of factors influencing the development of a …
Dynamics Of A Tropical Grass-Legume Sward In The Subtropics And Its Effect On Animal Performance, M J. Williams, A C. Hammond, W T. Butts, W E. Kunkle
Dynamics Of A Tropical Grass-Legume Sward In The Subtropics And Its Effect On Animal Performance, M J. Williams, A C. Hammond, W T. Butts, W E. Kunkle
IGC Proceedings (1977-2023)
Rhizoma perennial peanut ( Arachis glabrata Benth.) is a forage legume species adapted to the well-drained soils of subtropical United States (Prine et al., 1981). Management studies with perennial peanut have concentrated on hay production and animal performance based on pure stands (Prine, 1981 ; Sollenberger et al., 1987). Mixtures of perennial peanuts and various tropical grasses have performed well in small plot studies, but the interrelationship of grass and perennial peanuts under grazing and the consequence this relationship has on stand productivity and animal performance has not been investigated. The summer grazing phase of a backgrounding systems trial, which …
Hay Quality And Marketing Improved With Wyoming Hay Evaluation And Listing Service, A M. Gray
Hay Quality And Marketing Improved With Wyoming Hay Evaluation And Listing Service, A M. Gray
IGC Proceedings (1977-2023)
Hay production in the United States of America (US) is about 140 million metric tons/year. In 1987 most US hay producers had fewer marketing opportunities because of surplus production and lower demand due to a continuing national decline in livestock numbers. In Wyoming, marketing hay on the basis of forage quality is becoming critical for the economic survival of many haygrowers, particularly in years of low demand for hay. Demand for high quality hay by specialty markets (dairy and horse hay) is greater than supply throughout the US. However, buyers for such markets insist that quality hay is difficult to …
Effects Of Ammoniation Of Rice Straw On Its Feeding Value For Lambs, J Q. Ferreira, R Garcia
Effects Of Ammoniation Of Rice Straw On Its Feeding Value For Lambs, J Q. Ferreira, R Garcia
IGC Proceedings (1977-2023)
Great quantities of crop residues are produced in Brazil at harvest time. The production of rice straw reachs approximately ten million of tons each year and very small quantity is used for animal feeding. The interest on utilization of rice straw increased in the last years mainly due to possibility of ammonia use for improvement of nutritive value of crop residues (Sundstol el al., 1978 ; Saenger el al., 1983 ; Herrera-Saldana el al., 1982; Streeter and Horn, 1984; Grotheer el al., 1986; Horton and Steacy, 1979). The objective of this study was to measure the effect to ammoniation on …
Effect Of Ammonia Level, Time Of Exposure To Ammonia And Period Of Storage On Chemical Composition And Digestibility Of Two Tropical Grasses Hay, R A. Reis, R Garcia
Effect Of Ammonia Level, Time Of Exposure To Ammonia And Period Of Storage On Chemical Composition And Digestibility Of Two Tropical Grasses Hay, R A. Reis, R Garcia
IGC Proceedings (1977-2023)
The production of good quality hay in Central Brazil has been limited by the nature of cultivated species and constant presence of rainfalls. However, at the end of summer and part of fall seasons the environmental conditions are adequate for hay making but the forages show lower nutritive value. An alternative to improve the quality of tropical grasses hay would be the use of ammonia. Several studies (Buettner et al., 1982; Grotheer et al., 1986; Brown et al., 1987; Moore and Lechtenberg, 1987), showed decreases in NDF and hemicellulose on forages treated with ammonia. The influence of levels of ammonia …
Haymaking From Tropical Grasses, J L. Costa, J A. Gomide
Haymaking From Tropical Grasses, J L. Costa, J A. Gomide
IGC Proceedings (1977-2023)
Haymaking from pasture growth surplus is an alternative way to provide winter feeding to cattle. Some interest has recently been developed toward making hay from tropical grasses in their vegetative stage. The main hazard with this approach being the occurence of likely rains during field drying. This can be helped by shortening drying time through the use of appropriate harvester (Savoie et al., 1982) as well as selection fo species with higher drying rate (Morris, 1972; Person and Sorenson, 1970).
Hayval : A Microcomputer Program For Evlauting The Winter Feeding Needs Of Beef, Sheep, And Horses, D B. Hannaway, S A. Dahl, P J. Ballerstedt, P E. Shuler, W Rogers, F Shafabakhsh, J Smith, M Lawyer
Hayval : A Microcomputer Program For Evlauting The Winter Feeding Needs Of Beef, Sheep, And Horses, D B. Hannaway, S A. Dahl, P J. Ballerstedt, P E. Shuler, W Rogers, F Shafabakhsh, J Smith, M Lawyer
IGC Proceedings (1977-2023)
HA YV AL is a microcomputer programm which was developed to teach concepts of hay quality and animal nutrition. HA YV AL answers the question, 'Will the hay I have available meet the nutritional needs of the animals I am feeding ?'. It does so by using an interactive teaching technique ; asking questions about the animals and the hay being fed.
Increasing The Contribution Of Grass Silage For Milk Production, C Thomas, A Reeve
Increasing The Contribution Of Grass Silage For Milk Production, C Thomas, A Reeve
IGC Proceedings (1977-2023)
The conservation of grass as silage rather than hay has become increasingly popular in Northern Europe. The increase in silage making has been associated with the increased intensification of animal production and improvements in our knowledge of the fermentation process. Despite the ability to produce grass silages with consistently high metabolisable energy (ME) and crude protein (CP) contents it has been calculated that on UK dairy farms silage barely meets the maintenance requirement of the cow (Phipps, 1986). The objective of the work reported here is to devise methods to increase the contribution of silage in the diet of the …
Chemical And Nutritive Values Of Three Ensiled Residues (Broad Beans, Peas And Soybean) In Comparison With Yellow Lupin Silage, J Efe Serrano
Chemical And Nutritive Values Of Three Ensiled Residues (Broad Beans, Peas And Soybean) In Comparison With Yellow Lupin Silage, J Efe Serrano
IGC Proceedings (1977-2023)
The agro-industrial residues of legumes in Portugal has increased recently in animal feeding, but with little information about the nutritive values of these diets. The few values from literature (Economides and Hadjidemetriou, 1974; Boza and Guerreiro, 1981 ; Escandon et al., 1983) or in Tables of Food Composition are quite different. In south of Portugal, the yellow lupin is an expanding forage used in sheep diets as hay or silage. The purpose of this work, and others in progress, was to compare the feeding value of silages made from three important residues with the yellow lupin silage.
Effects Of Wilting And Formic Acid On The Chemical Composition And Nutritive Value Of Elephant Grass Silage Pennisetum Purpureum Schum) Purple Cultivar, W Lavezzo, Otavia E.N.M Lavezzo, C Rossi, I A. Bonassi
Effects Of Wilting And Formic Acid On The Chemical Composition And Nutritive Value Of Elephant Grass Silage Pennisetum Purpureum Schum) Purple Cultivar, W Lavezzo, Otavia E.N.M Lavezzo, C Rossi, I A. Bonassi
IGC Proceedings (1977-2023)
At the beginning of the growth the Elephant grass had a good dry matter production and a good nutritive value and due to this it is often used for ensilage in Brazil. However, when best suited age for ensilage (50-60 days), its water content is high making normally difficult to get suitable silages. Although reasonable silages of Elephant grass have been obtained with no additives (Tosi et al., 1983), the wilting and formic acid utilization during the ensilage have resulted in good quality silages (Silveira et al., 1979) with good nutritive value (Lavezzo et al., 1984). The purpose of this …
Corn Crop Grown With And Without Tropical Legumes For Silage Making, J A. Obeid, M E. Cruz
Corn Crop Grown With And Without Tropical Legumes For Silage Making, J A. Obeid, M E. Cruz
IGC Proceedings (1977-2023)
Under Brasilian conditions the beef and milk production rely almost exclusively upon the use of natural or cultivated pastures. However, due to the characteristics of the climate with a warm and rainy season and a cool and dry season, the forage growth rate and animal production presents both high and low peaks, resulting in slaughtering age of 4-5 years and a low average milk production (Pedreira, 1973). Improvement of forage production has been one approach for increasing animal production. However, the above measure brings a higher attention to the feeding of the animals in the dry season. Most often, use …
Changes In The Chemical Composition Of Wheat For Silage During Development In A Warm Climate, G Ashbell, Z G. Weinberg
Changes In The Chemical Composition Of Wheat For Silage During Development In A Warm Climate, G Ashbell, Z G. Weinberg
IGC Proceedings (1977-2023)
Wheat for silage in Israel is usually grown as a winter crop in a double-cropping system. In such a system, the wheat is harvested before it reaches maturity and the land is then ready for the summer crop. The periods between the various maturation stages of wheat are relatively short, especially in a warm climate. Ash bell (1984) and Ashbell et al. (1985) found that the greatest changes in nutritive components of the whole wheat plant occurred between the flowering and the milk ripening stages. During that period there is an increase in dry matter (DM) and water soluble carbohydrates …
Fire Effects On Herbage Yield And Nutritive Value Of Natural Grasslands In Uganda, E N. Sabiiti, R W. Wein
Fire Effects On Herbage Yield And Nutritive Value Of Natural Grasslands In Uganda, E N. Sabiiti, R W. Wein
IGC Proceedings (1977-2023)
Fire has long influenced the development, maintenance and productivity of nearly 80% of the Uganda natural grasslands which are important for livestock grazing. However, traditional burning appears to reduce the productivity of these natural pastures, especially in the Acacia/savanna grassland since there is no proper fire regime (fire intensity, severity and frequency) used by these pastoralists/as there is limited research that gives reliable data on how to use prescribed fires on these pastures lands (Sabiiti et al., 1986; Sabiiti and Wein, 1987; Harrington, 1974). Consequently, most of these pastures have been invaded by coarse and less nutritive grass species …
Variability Of A Tropical Savannah And Its Influence On Management Practices And Animal Weight Gains, R R. Vera, B Rivera, J H. Weniger
Variability Of A Tropical Savannah And Its Influence On Management Practices And Animal Weight Gains, R R. Vera, B Rivera, J H. Weniger
IGC Proceedings (1977-2023)
The savannah of the Colombian and Venezuelan plains have been relatively well studied from a floristic point of view and several major plant communities are recognized (Blydenstein, 1967). Nevertheless, the potential contribution of these plant communities to ruminant production have not been studied, except for the largest of these associations, that of the welldrained high savannah. Paladines and Leal (1979) have shown that it has low carrying capacity and sustains low levels of animal production both per head and per animal, despite moderate levels of primary productivity. In effect, animal weight gains range from 70-90 kg head-1 and 18-40 kg …
Yield And Quality Of Signal Grass Stockpiled At Different Dates, E A. Pizzaro, R R. Vera
Yield And Quality Of Signal Grass Stockpiled At Different Dates, E A. Pizzaro, R R. Vera
IGC Proceedings (1977-2023)
The savannas of the 'Cerrado' region of Brazil extend over 20 % of the brazilian territory, supporting over 50 % of the beef cattle industry (Kornelius et al., 1979). During the long dry season there is a pronounced deficit of quality in the natural savannas; conserved and standing crops (Pizarro and Vera, 1980; Paiva et al., 1978; Vera et al., 1981) pure legumes stands have been tested successfully to supplement the native vegetation (Tergas et al., 1983). Large leafy yields have been reported during the second half of the dry season (Vera et al., 1981 ; Pizarro et al., 1985). …
Distributions Of Yields And Nutritional Value In Native Pastures In South China, Zhiqiang Lai
Distributions Of Yields And Nutritional Value In Native Pastures In South China, Zhiqiang Lai
IGC Proceedings (1977-2023)
There are about 40 millions ha of gqtzeable hill tussocky pastures in south China, generally with an elevation below 500 m and slopes between 6 to 30°. They are suited to ruminant animal husbandry with good rainfall, long growth period and a variety of high yielding plants. But most of the swards are improperly used and managed. This damages the pasture resources, and causes erosion due to overgrazing resulting in ecological unbalances and eventually, hazards the development of ruminant husbandry. The aim of this trial was, by studying the growth rhythm, seasonal distributions of the yield and nutritional value of …
Year Round Protein Of Native Grasses Of Lesotho, C J. Goebel, G Seutloal, V Ramakhula
Year Round Protein Of Native Grasses Of Lesotho, C J. Goebel, G Seutloal, V Ramakhula
IGC Proceedings (1977-2023)
Rangelands of Lesotho are primarily located in the "sour veld " region of southern Africa. Percentagewise, the lands are cxtc11sive and furnish large quantities of forage for various type, of grazing animals. Detailed information upon nutritive qua I I ty of the native grasses would be of major benefit to assist in planning rotation grazing programs during critical periods or the year. In addition, there is a need for information of the nutrttional quality of introduced grasses to Lesotho's rangelands.
Dorycnium And Other Mediterranean Species - Their Use For Forage And Soil Conservation In Semi-Arid Environments Of New Zealand, B J. Wills, J.S C. Begg, J S.S Sheppard
Dorycnium And Other Mediterranean Species - Their Use For Forage And Soil Conservation In Semi-Arid Environments Of New Zealand, B J. Wills, J.S C. Begg, J S.S Sheppard
IGC Proceedings (1977-2023)
Dorycnium is one of several Mediterranean plant species that have been under evaluation for soil conservation purposes in New Zealand since the 1970's. In the dry South Island hill country, particular problems exist in relation to drought-prone, wind and frost affected, low to moderate fertility soils. In many cases these areas can provide for stock wintering and lambing, but in a semi-arid climate they produce little stock forage and provide an ideal habitat for rabbits. The two Dorycnium species described in this paper are nitrogen fixing, leguminous plants which have shown considerable promise for revegetation in drought-prone and semi-arid areas …
Effet De L'Arbuste Fourrager Atriplex Repanda Phil. Sur La Fertilite Du Sol Et Sur La Strate Herbacee Associee, S Lailhacar, A Carasco, M A. Sadzaw, G Castellaro
Effet De L'Arbuste Fourrager Atriplex Repanda Phil. Sur La Fertilite Du Sol Et Sur La Strate Herbacee Associee, S Lailhacar, A Carasco, M A. Sadzaw, G Castellaro
IGC Proceedings (1977-2023)
Au cours des dernieres annees, les plantations d'arbustes fourragers ont prolifere pour corriger Jes deficiences nutritives saisonnieres en proteine et carotene des therophytes qui dominent la strate herbacee des prairies de climat mediterraneen aride du Chili. En 1988 la rve Region possedait plus de 30.000 ha de plantations d'Atriplex repanda et A. nummularia. Etant donne les qualites nutritives de ces arbustes, ils doivent etre consideres comme complement du fourrage herbace et non pas comme son substitut, et, autant que possible, les deux ressources devraient etre presentes pour fournir un regime satisfaisant a la fin de la gestation d'ovins et de …
Salt Tolerant Legumes From The Guadalquivir Delta (S.W. Spain), T Maranon, J M. Romero, J M. Murillo
Salt Tolerant Legumes From The Guadalquivir Delta (S.W. Spain), T Maranon, J M. Romero, J M. Murillo
IGC Proceedings (1977-2023)
Saline environments occupy about 15 millions ha in the Mediterranean basin (Le Houerou, 1986). Many of those areas have been traditionally devoted to grazing. Native salt tolerant ecotypes of forage legumes and grasses are increasingly menaced. Overgrazing may lead to local extinction of the most palatable races ; on the other hand, their habitats are decreasing in salt marshes by drainage and farmland reclamation. Therefore, a coordinated program of survey, evaluation and conservation of salt tolerant plant genetic resources would be desirable in the Mediterranean basin. A project to study the ecology, physiology and nutritive value of salt tolerant annual …
Improving Pasture Resources In West Africa: Evaluation Of Forage Legumes To Meet The Social And Ecological Constraints, S A. Tarawali, M Peters, M A. Mohamed Saleem
Improving Pasture Resources In West Africa: Evaluation Of Forage Legumes To Meet The Social And Ecological Constraints, S A. Tarawali, M Peters, M A. Mohamed Saleem
IGC Proceedings (1977-2023)
Throughout sub-Saharan Africa, poor nutrition is a major constraint to livestock production (Henzell and t'Mannetje, 1980). In the West African subhumid and semi arid zones, the harsh dry season means that the quality of the naturally available forage is insufficient to meet cattle maintenance requirements for more than half the year (Mohamed-Saleem, 1986) ; in more humid areas intensive cropping restricts access to fodder. The introduction of improved forage legumes is recognised to be a viable approach to alleviating this problem (Jones et al., 1984). In Nigeria, the International Livestock Centre for Africa (ILCA) has successfully introduced Stylosanthes pastures to …
Structure And Function Of The Central Himalayan Alpine Grassland, India, J Ram, S P. Singh
Structure And Function Of The Central Himalayan Alpine Grassland, India, J Ram, S P. Singh
IGC Proceedings (1977-2023)
Extensive alpine and sub-alpine pastures occur in Central Himalaya (28-31° N lat. and 79-81° E long.) at 3.000-4.500 rn. There is a notable lack of quantitative information on high mountain grasslands in India. During the snow-free surnrner period (May to September), graziers both from plains and hills stay in these meadows to graze their sheep, horses and cattle. The primary objective of this study was to quantify the structure and productivity of Himalayan alpine grassland and compare the same with alpine sites distributed elsewhere and those of the adjacent Gangetic plains.
Interest Of Traditional Practices To Improve Grassland Fertility In The Central Pyrenees, G Balent, M Duru
Interest Of Traditional Practices To Improve Grassland Fertility In The Central Pyrenees, G Balent, M Duru
IGC Proceedings (1977-2023)
In the Central Pyrenees, the decline of agriculture has led to the transformation of fields into grasslands. The study of the dynamic of this secundary succession has shown the importance of residual soil fertility and grazing pressure on the botanical composition of plots (Balent & Duru, 1984). The actuals trends of evolution consist in a general decrease of soil fertility and, an irregular distribution of grazing pressure, the free-ranging animals selecting, during winter and early spring, the sites of higher fertility (Balent, 1986). From the mineral and botanical compositions of the vegetation, we examine the interest of three traditional management …
Importance Of Productive Grasslands In Protected Landscape Regions, Holecy Bohus
Importance Of Productive Grasslands In Protected Landscape Regions, Holecy Bohus
IGC Proceedings (1977-2023)
Grasslands, especially pastures, are often situated on extreme mountain sites in our country. Due to their botanical structure and natural production potential, they influence the ecological character of the region and give the impression of protected landscape. The aim is to preserve this specific character of the lanscape and on the other hand to look for the moderate grassland improvement and better utilization by nutrition and regular grazing. The untreated and non-utilized grasslands can lead to unfavourable changes of swards in the high localities. Therefore we tried to solve the moderate improvement of natural subalpine grasslands in the High Tatra …
Sociabilities, Morphologie Et Valeurs Nutritives Des Vegetations Prairiales, J M. Dorioz, Ph Fleury, B Jeannin
Sociabilities, Morphologie Et Valeurs Nutritives Des Vegetations Prairiales, J M. Dorioz, Ph Fleury, B Jeannin
IGC Proceedings (1977-2023)
Les especes dominantes des prairies presentent souvent une grande plasticite phenotypique dont les manifestations les plus spectaculaires au plan fourrager sont les changements du port, du volume relatif des organes et de la phenologie (Hedin, 1945; Hayne, 1983). L'amplitude de ces variations dans une meme region est mal connue. On peut done se demander dans quelle mesure elles remettent en cause la valeur indicatrice habituellement attribuee a ce type d'especes, en outre, s'il n'est pas utile de chercher a codifier la morphologie des dominantes, pour ameliorer les diagnostics agronomiques. Ce texte contient des reflexions autour de ces themes. 11 s'appuie …
Legume Pasture Units For Supplementing Cattle Grazing Rangeland Under Traditional Production Systems In The Nigerian Subhumid Zone, R.R Von Kaufmann, M.A Mohamed Saleem
Legume Pasture Units For Supplementing Cattle Grazing Rangeland Under Traditional Production Systems In The Nigerian Subhumid Zone, R.R Von Kaufmann, M.A Mohamed Saleem
IGC Proceedings (1977-2023)
The subhumid zone occupies approximately 20 % of West Africa and 50 % percent of Nigeria, subsaharan Africa's most populous country. It is characterised by receiv��ng between 900 and 1500 mm of annual precipitation and havmg between 170 and 280 growing days per annum. Although the zone h��s high agricultural potential it has been avoided by both c1;1ltiva!ors and pastoralists until recently mainly due to po��r s01l f��rtlhty and the endemic cattle disease, tryponosormas1s, earned by tsetse flies. Now increasing settlement of people is leading to ecological changes that are permitting the perma��en�� residei:ce of ruminant livestock. Clearing ofland for …
Planning Seasonal Forage Strategies In Dairy Farms A Linear Programming Approach, G Pichard, J Ortega, R Cussen
Planning Seasonal Forage Strategies In Dairy Farms A Linear Programming Approach, G Pichard, J Ortega, R Cussen
IGC Proceedings (1977-2023)
The nutritional requirement of any dairy herd varies along the year according mainly with the liveweight and the physiological stages of the animals. Similarily the grasslands and forage crops have specific and characteristic seasonal behaviour, both in terms of growth rate and nutritional quality. This situation is very dynamic and may become difficult to handle when several alternatives of forage species have to be combined in order to meet the animal requirements. In the humid temperate regions in Chile, most of the forage production in permanent grasslands occurs in spring because of the extreme drought during summer and low temperature-high …