Major Beef Production Gains From Commercial Rain-Fed Leucaena-Grass Pastures In Central Queensland, Australia,
2025
Department of Primary Industries
Major Beef Production Gains From Commercial Rain-Fed Leucaena-Grass Pastures In Central Queensland, Australia, J H. Wildin
IGC Proceedings (1977-2023)
Commercial leucnena-grass pastures in central Queensland increased from 24 ha in 1979 to about 20 000 ha in 1992. Since 1986 the exotic leucaena psyllid devastated leucaena (Leucaena leucocepliala) production along the humid coastal areas but not in the subcoastal plantings where the hot dry atmosphere controls the psyllid populations. The introduced rumen bacteria to detoxify DHP has enhanced the performance of cattle grazing leucaena. Unfertilised rain-fed leucaena-grass pastutes with leucaena rows 5-10 m apart have given annual steer live-weight gains of more than 250 kg consistently at stocking rates around 1-1.5 ha/steer. One cattleman with about 500 …
Productivity Of Silvipastoral Areas And Management Needs In Arid Regions Of India,
2025
Rajasthan Grass Farm
Productivity Of Silvipastoral Areas And Management Needs In Arid Regions Of India, N C. Jain
IGC Proceedings (1977-2023)
In an extremely arid state of India (Rajasthan) having high livestock concentration and vast degraded lands, the State Forest Department has developed community and forest lands into silvipastoral areas by sowing grass (mainly Cenchus ciliaris and C. setigerus) in association with trees. Surveys have revealed high variability in pasture establishment and productivity in different regions. Cenchrus established well in most regions, except the extreme south, if proper sowing methods with closer spacing were followed and soil conservation measures undertaken. Closure from animals helped in favourable grass succession. Establishment of Dichanthium annulatum and Stylosanthes hamata was relatively poor, Analysis of …
Sheep And Forage Productivity In Rubber Plantations,
2025
Rubber Research Institute of Malaysia
Sheep And Forage Productivity In Rubber Plantations, I Tajuddin, D T. Chong, K F. Ng, W W. Stur, H M. Shelton
IGC Proceedings (1977-2023)
The concept of integration of sheep with rubber plantations for weed control and meal production is rapidly gaining recognition in Malaysia. A series of experiments were set up with ACIAR support to determine the level of forage and animal production achievable in rubber plantations and to introduce and evaluate new forage germplasm for sheep grazing under rubber. These experiments showed that (i) the productivity of the currently used cover crops and naturally occurring further as rubber trees matured, (ii) the proportion of the unpalatable cover crop Caloponuim caeruleum increased rapidly with sheep grazing in immature rubber, (iii) reasonable sheep live-weight …
Potential Of Chamaecytisus Palmensis (Tagasaste) In The Summer Rainfall Areas Of South Africa,
2025
University of Pretoria
Potential Of Chamaecytisus Palmensis (Tagasaste) In The Summer Rainfall Areas Of South Africa, Norman F.G Rethman, Willem A. Van Niekerk
IGC Proceedings (1977-2023)
Preliminary studies with Chamaecytisus palmensis (tagasaste) under summer rainfall conditions in Transvaal province (23-27°S; 26-32°8) have demonstrated that it is adapted to a mean annual rainfall of 500- 750 mm, concentrated in the period October to March. Evaluations at drier (350 mm/year) and colder sites (altitude of 1750 m asl) were unfortunately grazed out by game. The most important limitation on the distribution of this species would, however, appear to· be its susceptibility to Phytophthora root rot organisms. This will probably limit its use on infected soils and especially under waterlogged and subtropical conditions. The species does survive mild frosts …
A Himalayan Slivipastroral System: Will It Meet The People's Need?,
2025
G.B Plant Institute of Himalyan Environment and Development
A Himalayan Slivipastroral System: Will It Meet The People's Need?, K S. Rao
IGC Proceedings (1977-2023)
The effects of increased population and subsequent requirements for food, fuel and fodder in central Himalaya are apparent in the extent of degradation and failure of production systems. The pastoral systems of high altitude central Himalayan villages have come under severe stress owing to reduction in available fodder source's and changed social habits. With the objective of meeting both the needs of the sedentary population for fuel and fodder, and the nomadic pastoralists for grazing, a model silvipastoral system was established. The highlights of the model are the participation of local people, and planting of trees important for wood and …
Role Of Vesicular Arbuscular Mycorrhizae In Leucaena Establishment,
2025
University of Queensland
Role Of Vesicular Arbuscular Mycorrhizae In Leucaena Establishment, N J. Brandon
IGC Proceedings (1977-2023)
No abstract provided.
Pasture Growth Around Broad-Leaved Trees Planted For Grassland Stability,
2025
Landcare Research New Zealand
Pasture Growth Around Broad-Leaved Trees Planted For Grassland Stability, A Neal Gilchrist, J R. Dez Hall, A G. Foote
IGC Proceedings (1977-2023)
Concurrent trials were conducted to measure pasture production and botanical composition at I, 4, 7, 10, and 13 m from the trunks of poplars, willows and eucalypts planted at wide spacings to arrest soil erosion on hill country near Gisborne, Hunterville and Masterton, respectively, in the North Island of New Zealand. Results after 3 years indicated a depression in grass+legume dry matter (DM) yield as the tree is approached, averaging 98, 92, 93, and 79% of that at 13 m (assumed to be unaffected by the tree) for 10, 7, 4, and 1 m respectively. The depressed yield at I …
Shading Increases Yield Of Nitrogen-Limited Tropical Grasses,
2025
The University of Queensland, Australia
Shading Increases Yield Of Nitrogen-Limited Tropical Grasses, D.W M. Wild, J R. Wilson, W W. Stur, H M. Shelton
IGC Proceedings (1977-2023)
This report summarises current research investigating the enhanced shoot growth and higher nitrogen (N) yield observed in N-deficient tropical grass pastures when moderately shaded. The "shade response" was consistently observed in a number of "run-down" tropical grass pastures, over a range of soil types. White there was evidence of translocation of N from roots of shaded grass, this source did not fully account for the additional N harvested in shoots. A more favourable microclimate at the soil surface-litter layer interface, particularly soil moisture, appeared to be responsible for improved litter breakdown and possibly soil mineralisation activity. The "shade response'' has …
Persistence Of An Erect And A Prostrate Paspalum Species As Affected By Shade And Defoliation,
2025
Malaysian Agricultural Research and Development Insitute
Persistence Of An Erect And A Prostrate Paspalum Species As Affected By Shade And Defoliation, C C. Wong, W W. Stur
IGC Proceedings (1977-2023)
The lack of persistence in sown posture under perennial plantation crops is poorly understood. An experiment was conducted to evaluate the effect of defoliation severity on the growth and survival of an erect and a prostrate-type shade-tolerant grasses when grown at light levels of 100, 50 and 20% of full sunlight. I was hypothesised that a prostrate grass would be able to persist better under frequent defoliation than an erect grass at low light levels, The prostrate Paspaalum wettsteinii and the erect Paspalum malacophyhllum produced a similar total biomass. However, P. wettsteinii had a higher root yield, while P. …
Prelimiary Evaluation Of Albizia Julibrissin As A Woody Warm-Season Forage,
2025
Auburn University
Prelimiary Evaluation Of Albizia Julibrissin As A Woody Warm-Season Forage, David I. Bransby
IGC Proceedings (1977-2023)
Evaluation of warm-season forage legumes for the south-eastern USA has been confined almost entirely to herbaceous plants, and woody plants have been largely overlooked. The objective of this study was to evaluate Albizia julibrissin as a woody forage legume. Dry matter yield of leaves was obtained from small plots harvested at 6-week intervals. Individual plants in a separate experiment were harvested every 4, 6, 8, lO and 12 weeks to determine yield response to harvest frequency, Leaf material was also fed to sheep for 3" weeks in a digestibility trial. Cumulative yield in the plot study was l0.1 I/ ha. …
Growth And Mineral Nutrition In Dichanthium Aristatum Sward Shaded By Tress,
2025
INRA
Growth And Mineral Nutrition In Dichanthium Aristatum Sward Shaded By Tress, P Cruz, N M. Munier-Jolain, R Tournebize, H Sinoquet
IGC Proceedings (1977-2023)
Gliricidia sepium is an important legume tree used in the silvopastoral systems of the Caribbean area and tropical America. In this work we analysed the effect of its alley cropping on the growth and mineral nutrition of a Dichanthium aristatum sward, Results show that nitrogen uptake and conversion efficiency of solar radiation were twice as high in the shaded grass. Phosphorus and potassium uptake of dichanthium were also improved by tree presence, Better mineral nutrition and growth of a shaded sward could be related to the better water status of the .. grass leaves throughout the day, This effect may …
Contribution Of Parkia Biglobosa To The Feeding Value Of Pasture Systems In West Africa,
2025
ILCA
Contribution Of Parkia Biglobosa To The Feeding Value Of Pasture Systems In West Africa, Elly N. Sabiiti, J Cobbina, J Lambourne
IGC Proceedings (1977-2023)
Parkia (Parkia biglobosa) is an important traditional economic tree legume with several uses for the rural farmers in West Africa, although it has received only limited resenrch. Parkia is dominant in natural pastures or fallow fields that are used for livestock grazing. The tree provides shade to forage grasses and livestock, protects soil from heat and torrential tropical rains, resists fire damage and coppices very well after defoliation. Farmers grow several food crops under the canopy. The fruits, leaves and young seedlings, which are highly nutritious, form an important fodder for livestock in the dry season when natural …
Comparative Ruminal Nitrogen Degradability Of Tropical Browse And Alfalfa Hays,
2025
ISRA LNERV
Comparative Ruminal Nitrogen Degradability Of Tropical Browse And Alfalfa Hays, S Toure-Fall, B Michalet-Doreau
IGC Proceedings (1977-2023)
The nitrogen (N) distribution of 2 tropical browse leaves (Balanites aegypliaca and Guiera senegalensis) and of 2 temperate alfalfa (Medicago sativa) hays was determined and the ruminal degradation of total N and fibre N fractions (NDSN, AFN, ADFN) was measured with nylon bag method. The average N degradability of temperate forages was not different, 77.1%, but that of the browse forages varied from 27.5% (G11iera) to 85.1 % (Balanites), The neutraldetergent-soluble N degraded rapidly in the rumen, whereas the aciddetergent-fibre N remained undegraded for all samples. The available fibre N was not high, except …
Effect Of Shrubs And Trees On Growth And Yield Of Cenchrus Ciliaris In The Three-Strata Forage System,
2025
Udayana University
Effect Of Shrubs And Trees On Growth And Yield Of Cenchrus Ciliaris In The Three-Strata Forage System, W Suanten, I M. Nitis, S Putra, K Lana
IGC Proceedings (1977-2023)
A three-strata forage system (TSFS} experiment was carried out for 5 years to compare the effect of Lencaena, Glirlcldia and trees on the growth and yield of buffel grass (Cenchrus clliaris}, The completely randomised design consisted of the integration of Cenchrus with 2 shrub legumes and 3 fodder trees with 9 repl_ications. The 0.25 ha TSFS plot was divided into 11 0.16 ha core area for food crops, 11 0.09 hil peripheral area for Cenchrus, Panicum, Graham stylo, Verano stylo and Centrosema, and • n 200 m circumference area for Ficus, Lannea and Hibiscus planted nt …
Trees And Shrubs As Secondary Components Of Pasture,
2025
AFNETA
Trees And Shrubs As Secondary Components Of Pasture, A N. Atta-Krah
IGC Proceedings (1977-2023)
Traditionally, the concept of pasture has precluded tree crops in any meaningful and productive way. Grasses and herbaceous legumes have been the major components of pasture. The place of trees in pasture is often limited to live fencing, and a few other trees interspersed within the pasture, to provide shade for livestock. In tropical and subtropical areas, where trees are a significant part of the natural vegetation, the non-inclusion· of trees in pasture and agricultural production systems and their increasing rate of disappearance from the zone are giving rise to serious environmental and agricultural concerns. There is an increasing realisation …
Pastures As The Secondary Components In Tree-Pasture Systems,
2025
MARDI
Pastures As The Secondary Components In Tree-Pasture Systems, Chin Peng Chen
IGC Proceedings (1977-2023)
The multi-stata canopy structure of rain forest allows only I% sunlight penetration, too little for the survival of forage beneath it. However, man-made forest plantation (rubber, oil palm and coconut) allows more light for forage species. Initially, 60-70 forage species were recorded under these modified forest canopies but only one third of them survived heavy shading. Forage dry matter yields declined from 2.8-4.8 I/ha DM at immature phase of plantations, to 0.1-1.0 I/Im at mautre phase. Nutrients. available to grazing animals from forages under plantations were guile high (18.4 kg Nit DM and 5609 MJ MEit DM) from native forages, …
Grazing Potential Of Desiccation-Tolerant Tropical And Subtropical Grasses,
2025
Universitas mataram
Grazing Potential Of Desiccation-Tolerant Tropical And Subtropical Grasses, Y A. Sutaryono, D F. Gaff
IGC Proceedings (1977-2023)
Some desiccation-tolerant grasses possess the potential for use as a grazing source for animals. Some species compared favourably in nutrient content and digestibility with other tropical animal fodder grasses. The Sporobolus species, S. aff, fimbriatus, S. lampranthus, S. pellucidus, together with Eragrostis invalida and Eragrostiella nardoides showed the most promising combination of desirable characteristics. Resurrection grasses contained potentially toxic substances, but, it appears, in amounts harmless to animals, Animal feed trials are needed to test their real feed value, palatability and non-toxicity to animals.
Beef Cow Adaptation To Hot Dry Climates,
2025
Texas Agricultural Experiment Station
Beef Cow Adaptation To Hot Dry Climates, T.D A. Forbes, J W. Holloway, B G. Warrington
IGC Proceedings (1977-2023)
Behavioural adaptation of Bos taurus (Angus) and B. indicus B: taurus cross (Brangus) females to high ambient temperatures was studied in 2 trials (maximum ambient temperatures of 37 .8 and 32.5°C respectively) in a semi-arid area of south Texas. Brangus females grazed for longer (297 v. 239 min/day, P<0.0001) spent less time in shade (288 v. 395 min/day, P<0.0001), and spent less time watering (95 v. 115 min/day, P<0.0001) than Angus females. Trial by breed interactions were detected (P<0.001) for resting in shade, resting in sun and watering time. Both breeds were apparently restricted in grazing time by high ambient temperatures during both trials, but the Angus were restricted to a greater extent. Although ambient temperatures were lower in the second trial, the threshold for allowing grazing unrestricted by heat stress was apparently not reached for either breed,
Mixed-Species Grazing In The Highland Sourveld Of South Africa: An Evaluation Of Animal Production Potential,
2025
University of Natal
Mixed-Species Grazing In The Highland Sourveld Of South Africa: An Evaluation Of Animal Production Potential, M B. Hardy, N M. Tainton
IGC Proceedings (1977-2023)
The effects of mixed-species grazing, at 5 cattle to sheep ratios all at the same stocking rale, on individual animal mass change/ ha mass change/ Ila were monitored for 2 grazing seasons, The ratios were balanced in terms of animal units which equate the expected intake of cattle and sheep. The study was conducted on a humid grasslands in which the herbage characteristically loses quality as Jt mature1. Mass gains of individual cattle were higher when the cattle grazed 10ge1her with the sheep than when they grazed alone. This was ascribed to increasing herbage availability as the ratio of cattle …
Prediction Of Live-Weight Gain Of Cattle Grazing Pastures On Brigalow Soil,
2025
CSIRO
Prediction Of Live-Weight Gain Of Cattle Grazing Pastures On Brigalow Soil, M Hirata, C K. Mcdonald, R M. Jones
IGC Proceedings (1977-2023)
A model for predicting the live-weight gain-(LWD) of cattle from climatic conditions and pasture and cattle attributes was developed. The model was calibrated and validated against the data from a long-term grazing experiment on brigalow soil, sown with green panic pastures. When validated, the model tended to overestimate LWG as the proportion of green panic (Panicum maximum var. trichoglume) in the pasture decreased, because the model was calibrated, without considering species composition, to data from years when green panic was dominant. This study emphasises the limitations of empirical models of grazing systems. The study also implies that there …
