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Articles 421 - 450 of 9400
Full-Text Articles in Entire DC Network
An Evaluation Of Fixed Versus Variable Rotational Grazing Under Weather Uncertainty Using Simulation, L D. Parsch, W M. Watts, O J. Loewer
An Evaluation Of Fixed Versus Variable Rotational Grazing Under Weather Uncertainty Using Simulation, L D. Parsch, W M. Watts, O J. Loewer
IGC Proceedings (1977-2023)
Three characteristics which identify a rotational grazing system and which distinguish one rotation from another are (a) the number of paddocks or cells into which the entire pasture area is divided, (b) the scheduled grazing period or amount of time the livestock will graze on a paddock before being moved, and (c) whether the rotation is fixed or variable. With a fixed rotation, the scheduled grazing period per paddock movement is strictly adhered to whereas with a variable rotation, paddock-to-paddock movement deviates from the scheduled sequence according to some specified criterion such as minimum herbage availability. The distinction between a …
Forage Legumes As A Component Of Smallholder Rice Farming Systems - A Case Study, U R. Sangakkara
Forage Legumes As A Component Of Smallholder Rice Farming Systems - A Case Study, U R. Sangakkara
IGC Proceedings (1977-2023)
The smallholder rice farmers of southern Asia can be classified as ones having small extents of cropping land, where ruminants are kept to provide farm power (Ranjhan, 1985). The majority of these farmers have 2-3 heads of cattle/buffaloes. The greatest demand of ruminant fodder in the developing countries of Asia is seen to be in the smallholder cropping sector (Remenyi and Mc William, 1985), primarily due to the high concentration of animals and reduced land availability for fodder production. Thus, studies (e.g. Gutteridge, 1983) show the feasibility of using fallow periods in rice culture for fodder production. As similar studies …
Grassland Farming Systems In South China, S R. Zhou
Grassland Farming Systems In South China, S R. Zhou
IGC Proceedings (1977-2023)
South China lies between 15° and 30° northern latitude and 100° -125° eastern longitude in the subtropical zone. It is the chief grain or economic crops growing area of China. Most farmers are not accustomed to forage crop cultivation. Animal husbandry is limited owing to fodder problems. Since 1972-1974 and 1981-1987, the research works on grassland farming systems have been carried out in order to develop a suitable grassland agriculture in South China.
Comparison Of Meat Performance Of Lambs Kept On Pastures And Intensively Fed On Pastures As Well As In Fattening Units, S Kukovics, T Schuszter, Cs Lanyi
Comparison Of Meat Performance Of Lambs Kept On Pastures And Intensively Fed On Pastures As Well As In Fattening Units, S Kukovics, T Schuszter, Cs Lanyi
IGC Proceedings (1977-2023)
Hungary is an exporting country in lambs which go for export either live or slaughtered. The majority of lambs are intensively fattened before slaughter or before live export. In the fattening pens (group fatting), a mixture of pelleted feed is offered ad libitum, but, in many cases, hay and/or straw are also fed. This feeding technology involves significant costs ; therefore, the testing of various fattening methods have been aimed at. Besides, we wished to study the fattening performance of imported Corriedale and Romney sheep, by using New-Zealand as well as Hungarian methods.
Animal Production Evaluation Of New Herbage Varieties, J.M M. Munro, D A. Davies
Animal Production Evaluation Of New Herbage Varieties, J.M M. Munro, D A. Davies
IGC Proceedings (1977-2023)
Although it is now universally accepted that animal performance is the ultimate test of any grassland innovation, few herbage varieties have been evaluated in terms of meat, milk or fibre production. Over the last decade, however, several large grazing trials with beef cattle or sheep have been carried out at Aberystwyth (Munro and Walters, 1986). These have mainly involved promising new Station ryegrass varieties (Lolium spp.) which have completed preliminary screening for yield, persistence and feed quality. In the first trial, comparing two perennial ryegrass (L. perenne) and two cocksfoot (Dactylis glomerata) varieties, steers on Mascot ryegrass …
Forward Rotational Grazing On Digitaria Decumbens Pasture With Weaned Female Creole Goats In Guadeloupe, G Alexandre, H Baudot, P Cruz, S Prache
Forward Rotational Grazing On Digitaria Decumbens Pasture With Weaned Female Creole Goats In Guadeloupe, G Alexandre, H Baudot, P Cruz, S Prache
IGC Proceedings (1977-2023)
Tropical herbage production regulation, obtained through fertilisation and irrigation, doesn't solve the problem of the low nutritive value and the low level of voluntary intake of this herbage. These problems are particulary important with young growing animals regarding to their low ingestive capacity and their high growth requirements. Different pasture management systems have been tested in Guadeloupe (French West Indies) in order to propose a better utilization of tropical pastures.
The Use Of Fertilizer Nitrogen And Increased Animals Production From New Zealand Hill Pastures, D A. Clark, M G. Lambert
The Use Of Fertilizer Nitrogen And Increased Animals Production From New Zealand Hill Pastures, D A. Clark, M G. Lambert
IGC Proceedings (1977-2023)
In New Zealand hill pastures, winter and early spring growth is often less than the maintenance of breeding ewes. In late spring and summer, pasture growth often exceeds requirements leading to pasture quality problems. It is usually uneconomic to overcome these problems by conservation, supplementary feeding or adjustement of animal numbers. An increased herbage accumulation in late winter as a result of fertiliser N application, should increase post-lambing ewe liveweights and hence lamb growth rates ; increase ewe mating weights and hence improve flock prolificacy with consequent improvements in the utilisation of summer pasture. Two experiments examined the effect of …
The Performance Of Sucking Lambs Grazing Unfertilized An Fertilized Natural Pasture And Rangeland Under Subarctic Conditions, Olafur Gudmundsson
The Performance Of Sucking Lambs Grazing Unfertilized An Fertilized Natural Pasture And Rangeland Under Subarctic Conditions, Olafur Gudmundsson
IGC Proceedings (1977-2023)
Under subartic conditions natural pastures and rangelands are not very productive and are often vulnerable to erosion when overgrazed. The grazing season is also very short, often only four to five months, during which time the lambs have to reach slaughter weight. It is therefore critical to increase carrying capacity and production of the land. Several studies have tested fertilizer use to increase plant production under these condition (e.g., Thorsteinsson and Sigurbjornsson, 1961 ; Arnalds 1974; Arnalds et al. 1980). However, while these studies have shown a manifold increase in forage production and a shift in plant composition to a …
Effect Of Sward Of Perennial Rye-Grass And Red Fescue Type On Gains And Behavior Of Grazing Yearlings, M Rogalski, Z Karzoun
Effect Of Sward Of Perennial Rye-Grass And Red Fescue Type On Gains And Behavior Of Grazing Yearlings, M Rogalski, Z Karzoun
IGC Proceedings (1977-2023)
The output of sheep fed on pasture depends on a number of qualitative and quantitative factors of the sward (Arnold, 1981, Rogalski and Karzoun, 1988). These factors have a decisive influence on the behaviour of animals and the amount of herbage consumed by them and, consequently, on the formation of interrelations between the sward and grazing animals (Rogalski, 1978). The knowledge of these factors is very important if sheep are to be kept in the pasturing systems. Experiments presented in this paper were carried out to determine some of the interdependances and to compare the effect of botanical composition of …
A Comparison Of Rotation And Continuous-Seasonal Grazing Systems, Zutong Zhang, Zhixin Xu, Guodong Han
A Comparison Of Rotation And Continuous-Seasonal Grazing Systems, Zutong Zhang, Zhixin Xu, Guodong Han
IGC Proceedings (1977-2023)
A proper grazing system is the effective measure to put pasture resources to rational use. Many scholars had compared rotation grazing to continuous grazing. Some results were shown that rotation grazing can bring more herbage production and liveweight gain than the continuous grazing (Allan, 1985), but others were shown that there was no significant difference between rotation and continuous grazing, even the continuous grazing was better than the rotation grazing (Jerry et al, 1987). In the recent years, many scholars had compared the rotation to the continuous grazing in all round way, especially in grassland vegetation and soil characteristics (Heitschmidt …
Tagaste (Chamaecytisus Palmensis), An Evergreen Fodder Tree, In Grazing Systems Of Mediterranean Type Climates 2. The Feeding Value Of Tagasaste For Wool Production When Grazed By Young Merino Ewes Over Summer And Autumn, C M. Oldham, P M. Morre
Tagaste (Chamaecytisus Palmensis), An Evergreen Fodder Tree, In Grazing Systems Of Mediterranean Type Climates 2. The Feeding Value Of Tagasaste For Wool Production When Grazed By Young Merino Ewes Over Summer And Autumn, C M. Oldham, P M. Morre
IGC Proceedings (1977-2023)
In south-western Australia merino sheep are the primary animal industry. Optimum stocking rates dictate that farmers must budget to hand feed grain to their sheep in late summer/autumn to guarantee their survival and production of a good quality fleece. Income is from wool and sale of surplus animals. The annual production of wool and lambs is largely constrained by the Mediterranean-type climate. Typically the summer drought lasts 3 to 7 months. In summer the dry annual pastures are low in crude protein (around 9 %) and digestibility (around 50 %) and this is associated with a low rate of wool …
Effect Of Nitrogen Fertilizer And Stocking Density On Grazing Cattle, A Gonzalez-Rodriguez
Effect Of Nitrogen Fertilizer And Stocking Density On Grazing Cattle, A Gonzalez-Rodriguez
IGC Proceedings (1977-2023)
Galicia is a humid region with mild winters in the atlantic coast of the north west of Spain. White clover and perennial ryegrass perform quite well in the acids soils, after P and lime. application. White clover potential is reduced due to the dry period in July and August. Use of N in spring could compensate this potential despite increasing seasonality. When clover is included in the sward, a low response to N application was expected, as usually happens in small plo1 experiments on an annual basis (Gonzalez, 1982). This experiment attemps to evaluate, in terms of animal production, the …
Effect Of Endophyte (Acremonum Coenophialum) Infection Of Tall Fescue And Paddock Exchange On Intake And Performance Of Grazing Steers, J A. Stuedmann, D L. Breedlove, K R. Pond, D P. Belesky, L P. Tate Jr, F N. Thompson, S R. Wilkinson
Effect Of Endophyte (Acremonum Coenophialum) Infection Of Tall Fescue And Paddock Exchange On Intake And Performance Of Grazing Steers, J A. Stuedmann, D L. Breedlove, K R. Pond, D P. Belesky, L P. Tate Jr, F N. Thompson, S R. Wilkinson
IGC Proceedings (1977-2023)
INTRODUCTION Tall fescue (Festuca arundinacea Schreb), grown on over 14 million ha, is the most common pasture grass in humid areas of the eastern USA and, to limited extent, in the northwestern USA. The presence of an endophyte in tall fescue has been associated with a number of animal health problems including reduced performance (Stuedemann and Hoveland, 1988). Intake was reduced in diets containing the endophyte in seed, hay or green forage (Hemken et al., 1979; Schmidt et al., 1982). However, no studies have been reported which used direct methods to determine intake differences of grazing animals as influenced …
Phosphorus Fertilization And Beef Production On New Seeded Pastures In The Rolled Pampa Of Argentina, J A. Josifovich, J Maddaloni, O D. Bertin
Phosphorus Fertilization And Beef Production On New Seeded Pastures In The Rolled Pampa Of Argentina, J A. Josifovich, J Maddaloni, O D. Bertin
IGC Proceedings (1977-2023)
In general there were not responses to phosphorus fertilization in pastures north of Salado River in Buenos Aires province, even though there are good responses south of this river. In a previous work in Pergamino, a 7 year old fescue (Festuca arundinacea Schreb) and white clover (Trifolium re pens) pasture was fertilized with 100 kg calcium superphosphate getting significant differences in A.D.G. and live weight increase per hectare, specially in winter months. There was no response in botanical composition, forage digestibility or crude protein content. (Maddaloni et al., 1982). To get the optimum doses for fertilization is not an easy …
Improving Animal Performance By Grazing Clovers, C P. Bagley, J I. Feazel, C C. Willis
Improving Animal Performance By Grazing Clovers, C P. Bagley, J I. Feazel, C C. Willis
IGC Proceedings (1977-2023)
Warm-season perennial grasses, such as 'Coastal' bermudagrass (Cynodon dactylon L.), are characterized as being relatively high in yield capabilities but low to moderate in forage quality as compared with cool-season grasses (Wilson, 1984). Legumes can be interseeded into grass sods which can increase both forage yield (Knight, 1970) and animal performance (Blaser et al., 1956; Bagley et al., 1988). Performance of stocker animals has been shown to be much lower during the summer on bermudagrass compared with similar weight steers grazing ryegrass (Bagley, 1987). Legumes may be capable of extending the high performance grazing season of stocker beef past …
The Effects Of Graminaceous Species And Stocking Rate On Grazing Performance Of Charolais Steers, Francoise Riviere, Odile Colin
The Effects Of Graminaceous Species And Stocking Rate On Grazing Performance Of Charolais Steers, Francoise Riviere, Odile Colin
IGC Proceedings (1977-2023)
High daily intakes of herbage with high digestibility are required to maximise animal production output per hectare from grazing. Tall fescue (TF) is well known for its high herbage production but its nutritive value may limit animal growth (Jacobson, 1969). Recently progress in sward species selection has provided· new TF cultivars with smooth leaves more digestible and better ingested by animals than the previous cultivars. The purpose of the trials reported here was to study, in comparison with perennial rye grass (PRG), the influence of new tall fescue cultivars, on steers growth grazing at two stocking rates.
Evaluation Of Three Tropical Perennial Grasses For Beef Production In South Central Florida, A Larbi, P Mislevy, W F. Brown, M B. Adjei
Evaluation Of Three Tropical Perennial Grasses For Beef Production In South Central Florida, A Larbi, P Mislevy, W F. Brown, M B. Adjei
IGC Proceedings (1977-2023)
Species of the genus Cynodon (Bermudagrasses and stargrasses) have a considerable potential for grazing in southern Florida (Adjei et al., 1980, Pitman et al., 1984). Preliminary evaluation studies indicate that two new stargrass cultivars, Florico and Florona ( Cynodon nlemfuensis Vanderyst var nlemfuensis) and Callie Hybrid Bermudagrass [C. dactylon (L.) Pers Tifton 44 X Callie], may offer alternatives to commercially available cultivars, due to their high forage production, persistence, cold tolerance and better nutritive value (Mislevy et al., 1981 and Brown, 1986). Little is known, however, of animal performance on these grasses under grazing. The objective of the study was …
Effects Of Grazing Sainfoin Stubble Fields And Adding With Green Hay On Grass-Lamb Fattening, Fu Yikun, Jia Dujing, Li Guangdi, Dang Bo, Wen Shangwen, Xu Changlin
Effects Of Grazing Sainfoin Stubble Fields And Adding With Green Hay On Grass-Lamb Fattening, Fu Yikun, Jia Dujing, Li Guangdi, Dang Bo, Wen Shangwen, Xu Changlin
IGC Proceedings (1977-2023)
With its fast turnover, low cost and high nutrition, lamb production has been developing an important industry of seasonal animal husbandry recently in China. The way of taking lambs from pastoral area and then fattened in farming area is considered to be most effective for lambs can make good use of feeds and climate resources in both farming and pastoral areas. The effects of grazing sainfoin ( Onobrychis viciifolia) stubble fields and adding with green hay on two types of lamb fattening were studied by means of measuring live-weight gains, meat quality and carcass output during 1986-1987, and the …
Efficiency Of Grazing On Growth And Nutrient Intake Of Dairy Heifers, M Okamoto, I Iketaki, N Hasegawa, N Yoshida
Efficiency Of Grazing On Growth And Nutrient Intake Of Dairy Heifers, M Okamoto, I Iketaki, N Hasegawa, N Yoshida
IGC Proceedings (1977-2023)
Grazing has traditionally been recognized as one of the most important labor-saving means in which herbage can be utilized more economically. However, in Japan, the practice of grazing is declining due to improved farm management - more animals per farm, greater harvest yield per area and higher production performance. Grazing animals tend to be healthier and more productive than animals kept in confinement. In addition, feed cost of raising dairy heifers on high pasture system is reduced by more than 50 % relative to the conventional (dry lot) system and to 65 % when the cost oflabor and facilities are …
Management Systems For Growing Fattening Bovine Cattle In Coast Cross Bermudagrass No.1 Without Irrigation, G Vales, A Molina
Management Systems For Growing Fattening Bovine Cattle In Coast Cross Bermudagrass No.1 Without Irrigation, G Vales, A Molina
IGC Proceedings (1977-2023)
Four experiments were carried out to establish an intensive non-irrigated system with Holstein male calves in coast cross bermuda grass No. 1 (Cynodon dactylon cv. Coast cross 1). Two grazing methods were evaluated. These were : segregating the area for pasture conservation in the rainy season and N fertilization including the strategy of application combined with different stocking rates.
Beef Production In Guineagrass Pastures With Nitrogen Or Legumes, V Favoretto, L.R. De A. Rodrigues, A G. Chiarello, A.A M. Sampaio, P F. Vieira, E B. Malheiros
Beef Production In Guineagrass Pastures With Nitrogen Or Legumes, V Favoretto, L.R. De A. Rodrigues, A G. Chiarello, A.A M. Sampaio, P F. Vieira, E B. Malheiros
IGC Proceedings (1977-2023)
Beef production in Brazil is based on the high dry-matter production of tropical grasses, but yields are not always satisfactory. Nitrogen fertilization results in linear increases of drymatter production (Gomide et al., 1984) and also in the liveweight-gain (LWG) of the animals (Addison et al., 1985). However, due to the high cost of fertilizers, the utilization of grass pastures associated to herbaceous or shrub legumes may be an economic way to increase animal production. The aim of this work was to study the availability of dry-matter and the L WG of steers in Guineagrass (Panicum maximum Jacq.) pastures fertilized with …
Performance Of Three Beef Cow Genotypes When Grazing Sown Pasture At Two Sward Heights, I A. Wright, J R. Jones, T J. Maxwell, A.J F. Russel
Performance Of Three Beef Cow Genotypes When Grazing Sown Pasture At Two Sward Heights, I A. Wright, J R. Jones, T J. Maxwell, A.J F. Russel
IGC Proceedings (1977-2023)
In grassland based systems of animal production, it is important to choose a genotype of animal with production characteristics appropriate to the level of nutrition which can be supplied by the available resources. It is generally recognised that the most economically efficient beef cow systems are those that allow the cows to increase levels of body fat when feed is plentiful or cheap (eg. summer grazing in N. Europe) and to draw on those reserves during periods of feed scarcity or when feed is expensive (eg. winter) (Russel and Broadbent, 1985). The ability of cows to increase body reserves during …
Effect Of Acremonium Coenophialum Infected Festuca Arundinacea On Cow-Calf Production, J C. Waller, J B. Mclaren, H A. Fribourg, A B. Chestnut, D G. Keltner
Effect Of Acremonium Coenophialum Infected Festuca Arundinacea On Cow-Calf Production, J C. Waller, J B. Mclaren, H A. Fribourg, A B. Chestnut, D G. Keltner
IGC Proceedings (1977-2023)
Tall fescue (Festuca arundinacea Schreb.) is the predominant forage available to beef cattle producers in the transition zone of the eastern US. The presence of the endophytic fungus Acremonium coenophialum Morgan-Jone & Garns has been associated with reduced animal performance that results in substantial economic loss to producers (Bacon and Siegel, 1988; Bush and Burrus, 1988; Stuedemann and Hoveland, 1988). Cattle producers have used N fertilization to increase productivity of fescue pastures. Renovation of fescue pastures with legumes has been a method of improving pasture quality and the performance of animals grazing those pasture (McLaren et al., 1983).
Soil Fertility And Beef Production In The Semi-Arid Sub-Tropics, P C. Kerridge, R W. Mclean
Soil Fertility And Beef Production In The Semi-Arid Sub-Tropics, P C. Kerridge, R W. Mclean
IGC Proceedings (1977-2023)
Two-thirds of the grazing lands in Queensland are on infertile soils, low in organic matter, phosphorus (P) and nitrogen (N) (Weston et al., 1981). Pasture quality is low and average liveweight gain (L WG) of steers on these soils ranges from 0.10 to 0.30 kg/day compared to 0.40 to 0.50 kg/day on more fertile soils. Low herbage production limits carrying capacity to 3-10 ha/animal. The nutritive value can be improved by (i) direct supplementation of animals with N and P, (ii) introduction of a legume together with fertilizer and/or supplement P or (iii) use of heavily fertilized improved grasses ± …
Animal Perforamnce On Dwarf Elephantgrass And Rhizoma Peanut Pastures, L E. Sollenberger, C S. Jones Jr, G M. Prine
Animal Perforamnce On Dwarf Elephantgrass And Rhizoma Peanut Pastures, L E. Sollenberger, C S. Jones Jr, G M. Prine
IGC Proceedings (1977-2023)
Pasture systems in the southeastern U.S. are based on perennial warm-season grasses, but forage quality of these species is often low during mid-summer through early fall. Two perennial forages that were recently released in Florida, 'Mott' dwarf elephantgrass (Pennisetum purpureum Schum. ; Sollenberger et al., 1988b) and the legume 'Florigraze' rhizoma peanut (Arachis glabrata Benth. ; Prine et al., 1981), have potential to provide herbage of high quality during May through October. Grazing trials were conducted to determine steer ( Bos spp.) average daily gain (ADG), carrying capacity (CC), and gain ha-1 on Mott and Flozigraze, and to compare these …
Influence Of Forage Availability On Growth And Reproduction Of Brahman-Hereford (F-1) Females Grazing Humid Pastures And Semi-Arid Rangelands, J W. Holloway, F M. Rouquette Jr, C R. Long, M K. Owens, B G. Warrington, A D. Chamrad, J F. Baker, D W. Forrest
Influence Of Forage Availability On Growth And Reproduction Of Brahman-Hereford (F-1) Females Grazing Humid Pastures And Semi-Arid Rangelands, J W. Holloway, F M. Rouquette Jr, C R. Long, M K. Owens, B G. Warrington, A D. Chamrad, J F. Baker, D W. Forrest
IGC Proceedings (1977-2023)
Relationship of forage availability, animal growth, and reproduction have been studied in both humid "improved" pastures (Adje et al., 1980; Guerrero et al., 1984; Bransby et al., 1988) and semi-arid "native" rangelands (Hart, 1972, 1978) but no study has been reported in which the two ecosystems hav�� b��en compared in terms of these relationships. Forage ava1lab1hty 1s one of the primary variables that can be easily controlled by cattle producers and thus the relationship to performance and reproduction is of fundamental importance. The purpose of this experiment was to determine if the patterns of relationship between forage availability and animal …
Forage Management System For Lean Beef Production: Nitrogen Rate On Pasture And Roughage Level In Feedlot, F M. Rouquette Jr, L R. Nelson, D P. Hutcheson
Forage Management System For Lean Beef Production: Nitrogen Rate On Pasture And Roughage Level In Feedlot, F M. Rouquette Jr, L R. Nelson, D P. Hutcheson
IGC Proceedings (1977-2023)
Fertilizer rates have long been shown to increase forage dry matter production and growth promoting implants have been shown to increase live weight gains during either the stocker or feeder phase. There has been little evidence, however, to ascertain the influence of pasture-animal management systems on subsequent feedlot performance. The primary objectives of this study were to: (1) determine the influence of rate of fertilizer nitrogen and Zeranol implant on gain per animal and gain per acre ; and (2) determine the influence of previous pasture treatment on feedlot performance from two levels of roughage.
Long-Term Productivity Of Legumes-Based And Pure Grass Pastures In The Eastern Plains Of Colombia, C Lascano, J Estrada
Long-Term Productivity Of Legumes-Based And Pure Grass Pastures In The Eastern Plains Of Colombia, C Lascano, J Estrada
IGC Proceedings (1977-2023)
The savannas of Colombia have acid soils of low fertility, a well defined dry season and an herbaceous native vegetation of low nutritional value (Lascano and Spain, 1986). As a consequence, traditional livestock production is extensive and of low productivity in terms of animal growth and reproduction (Vera and Sere, 1985). An economically attractive alternative to increase cattle production in the savannas of Colombia is through the use of legume-based pastures, provided they are productive and persistent (Nores and Estrada, 1979). This paper presents results on animal production and forage attnbutes of a long-term grazing experiment which includes a grass …
Animal Production Of Pastures Based On Centrosema Spp. In The Eastern Plains Of Colombia, C Lascano, J Estrada, P Avila
Animal Production Of Pastures Based On Centrosema Spp. In The Eastern Plains Of Colombia, C Lascano, J Estrada, P Avila
IGC Proceedings (1977-2023)
Lack of adaptation of commercial grass and legume cultivars to biotic and edaphic constraints prevailing in tropical American savannas has been partially responsible for failures in the development of improved pastures in these areas (Toledo, 1985). As a result, the Tropical Pastures Program of CIAT has taken responsibility to collect and select forage germplasm with adaptation to acid soils of low natural fertility. Within the Centrosema genus promising acid soil tolerant species have been identified, such as C. macrocarpum (SchultzeKraft et al., 1985), C. acutifolium (Schultze-Kraft et al., 1987) and C. brasiliarum (Schultze-Kraft and Benavides, 1988). A grazing experiment was …
Removing Limitations To Cattle Production In The Semi-Arid Tropics, W H. Winter
Removing Limitations To Cattle Production In The Semi-Arid Tropics, W H. Winter
IGC Proceedings (1977-2023)
Cattle production on tropical tallgrass pastures of northwest Australia is limited by the poor quality of the forage. Sodium levels are inadequate throughout the year and N, P and S concentrations are below critical values for good animal growth after the first 4-6 weeks of the wet season. Thus, stocking rates and liveweight gains are low ( < 50 kg/annum) despite 18-26 weeks of pasture growth (McCown, 1982).This paper reports the results of 3 experiments which use different options to improve cattle production in this region.