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- IGC Proceedings (1977-2023) (160)
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Articles 91 - 120 of 189
Full-Text Articles in Agricultural Science
Determining ‘Wether’ Social Behaviour Or Pasture Quality Drives Sheep Grazing Patterns Using Random Forest Modelling, D. J. Parnell, L. Ingram, J. Edwards
Determining ‘Wether’ Social Behaviour Or Pasture Quality Drives Sheep Grazing Patterns Using Random Forest Modelling, D. J. Parnell, L. Ingram, J. Edwards
IGC Proceedings (1977-2023)
Monitoring livestock provides valuable insights into the spatial distribution, foraging patterns, and animal behaviour, which may lead to the improved management of livestock. This objective of study was to understand what variables were significant in determining where sheep spent the most time in paddocks of native (dominated by Poa spp., Stipa spp., and Hordeum leporinum), and improved (Phalaris aquatica, Festuca spp., and Trifolium subterraneum) pastures (~24 ha-1 in size). Castrated male sheep, wethers, were tracked using GPS collars on a property located in the Monaro region of Southern New South Wales, Australia. Trials were performed over …
Productivity Of A Leucaena Leucocephala-Cynodon Nlemfuensis Silvopastoral System With Sheep In Yucatan, Mexico, J. G. Escobedo-Mex, L. Ramirez-Aviles
Productivity Of A Leucaena Leucocephala-Cynodon Nlemfuensis Silvopastoral System With Sheep In Yucatan, Mexico, J. G. Escobedo-Mex, L. Ramirez-Aviles
IGC Proceedings (1977-2023)
Animal production in the tropics of Mexico is based on grazed grasslands of low productivity; this type of production system has reduced the areas of natural vegetation and damaged the ecology (erosion of flora, fauna and soil). Silvopastoral technologies may improve the welfare and economic conditions of the rural population and, consequently, preserve their natural resources. The current work was designed to assess the introduction of Leucaena leucocephala in a silvopastoral system with Cynodon nlemfuensis (star grass) grazed by sheep.
Farmer Adoption; Ten Years Of Productive Pasture Systems In Southern Australia, Geoffrey Saul, H. L. Quinn, J. T. Trompf
Farmer Adoption; Ten Years Of Productive Pasture Systems In Southern Australia, Geoffrey Saul, H. L. Quinn, J. T. Trompf
IGC Proceedings (1977-2023)
n Southern Australian sheep and beef farmers have been slow to adopt technology related to grazing management and pasture utilisation despite clear evidence of a strong link between utilisation (stock per ha) and profitability. Between 1971-95, the average stocking rate on farms was 10-12 dry sheep equivalent per hectare (dse/ha) (Anon 2004). Results from the Hamilton Long-term Phosphate Experiment (Cayley et al., 2002) show higher pasture production, herbage digestibility, stocking rates and profitability as phosphorus fertiliser applications increase. In 1993, the Grassland Productivity Program (GPP) started in the winter rainfall areas of southern Australia (Trompf & Sale 2000), initiated …
Pastures From Space - Application Of Satellite-Derived Pasture Predictions Improve The Profitability Of Australian Sheep Producers, S. G. Gherardi, L. Anderton, J. Sneddon, Chris Oldham, G. Mata
Pastures From Space - Application Of Satellite-Derived Pasture Predictions Improve The Profitability Of Australian Sheep Producers, S. G. Gherardi, L. Anderton, J. Sneddon, Chris Oldham, G. Mata
IGC Proceedings (1977-2023)
Pastures from Space, a collaborative program between CSIRO Livestock Industries and the Western Australian state Departments of Agriculture and Land Information, has developed the capacity to measure both the biomass and growth rate of annual pasture in the winter rainfall regions of southern Australia using satellite images (Edirisinghe et al., 2002). Producer groups were set up to pilot test the delivery of satellitederived pasture growth rate (PGR, kg dry matter/hectare.day) and biomass (feed on offer or FOO, kg dry matter/hectare) predictions for paddocks on individual farms in Western Australia. This paper reports on the value to Australian sheep producers …
A Farmer Friendly Feed Budget Calculator For Grazing Management Decisions In Winter And Spring, M. Curnow, M. W. Hyder
A Farmer Friendly Feed Budget Calculator For Grazing Management Decisions In Winter And Spring, M. Curnow, M. W. Hyder
IGC Proceedings (1977-2023)
The Western Australian (WA) environment is Mediterranean with annual legume/grass pastures and a 6 month growing season. In autumn where over grazing can impact pasture establishment and in spring, prior to senescence, when under grazing can mean significant losses of efficiency are crucial times for grazing management. Pasture utilisation is typically low (25-35%) due to conservative stocking regimes; key to increasing productivity is increasing pasture utilisation (Grimm, 1998). Increased level of productivity require farmer sophistication in the way they feed budget. To this end, satellite technology is being used to provide farmers in southern Australia with weekly estimates of pasture …
Grassland Monitoring System For Sustainable Utilisation In Inner Mongolia, China. 2. Real-Time Monitoring Of Grass And Animal Interaction Using Satellite Data And Gps, K. Kawamura, T. Akiyama, H. Yokota, M. Inoue, Taisuke Yasuda, O. Watanabe, Y. Wang
Grassland Monitoring System For Sustainable Utilisation In Inner Mongolia, China. 2. Real-Time Monitoring Of Grass And Animal Interaction Using Satellite Data And Gps, K. Kawamura, T. Akiyama, H. Yokota, M. Inoue, Taisuke Yasuda, O. Watanabe, Y. Wang
IGC Proceedings (1977-2023)
Overgrazing is one of the primary causes of desertification in Inner Mongolia grassland. A previous paper estimated herbage quantity and quality (Kawamura et al., 2005), and quantified the grazing intensity on grass biomass using Terra MODIS satellite, Global Positioning Systems (GPS) and GIS (Kawamura et al., 2003). The aim of this study is real-time monitoring of both grass biomass and animal behaviour to evaluate the effect of grazing intensity (GI) on grass growth rate during the growing season using Terra MODIS satellite and GPS.
Grassland Monitoring System For Sustainable Utilisation In Inner Mongolia, China. 3. The Estimation Of Herbage Intake Of Sheep During Grazing The Natural Grassland, H. Yokota, K. Kawamura, T. Akiyama, M. Inoue, M. Kondo, K. Kita, Y. Wang
Grassland Monitoring System For Sustainable Utilisation In Inner Mongolia, China. 3. The Estimation Of Herbage Intake Of Sheep During Grazing The Natural Grassland, H. Yokota, K. Kawamura, T. Akiyama, M. Inoue, M. Kondo, K. Kita, Y. Wang
IGC Proceedings (1977-2023)
Grassland condition depends on a balance between growth rates of grasses and herbage intake by animals. In the previous two reports the general concept was described of the monitoring system using satellite data, GPS and GIS and real-time monitoring of grass biomass and quality and animal behaviour. This paper reports the estimation of herbage intake by sheep which had been raised by a farmer in the Inner Mongolia steppe under a typical grazing system with no supplement feeds except salt and also estimation of the growth rate of young sheep.
Decision Support System For Grassland-Based Sheep Production In The Chilean Patagonia, R. R. Vera, S. Morales, C. Aguilar
Decision Support System For Grassland-Based Sheep Production In The Chilean Patagonia, R. R. Vera, S. Morales, C. Aguilar
IGC Proceedings (1977-2023)
Temporal decision-making in sheep production systems of the Chilean Patagonia is influenced by forage availability in existing paddocks, which in turn is determined by previous use, localisation, climate and soil. Also, production strategies are evolving, with a trend towards fat lamb production, introduction of new breeds and a reduction in the importance of wool production. The objective of this study was to develop an initial version of a spatial empirical simulation model based on extremely limited information, to predict forage growth and sheep production so that decision-makers can assess alternative production strategies.
Sheep Worms – Sustainable Summer-Autumn Worm Control, Department Of Primary Industries And Regional Development, Western Australia
Sheep Worms – Sustainable Summer-Autumn Worm Control, Department Of Primary Industries And Regional Development, Western Australia
Animal production and livestock factsheets
A summer drenching program for sheep worm control is now recognised as a key cause of drench resistance in Western Australia. However, some small changes can increase the sustainability of pre-emptive control programs. Drenches in summer should always be given to younger, growing sheep (current and previous year’s age groups), whereas adult sheep should be drenched in autumn, or if drenched in summer, some should be left untreated (if drenching at all). Research shows that this reduces the chance of developing drench resistance but still provides effective worm control.
Do Species And Functional Diversity Indices Reflect Changes In Grazing Regimes And Climatic Conditions In Northeastern Spain?, F. De Bello, J. Leps, M. T. Sebastià
Do Species And Functional Diversity Indices Reflect Changes In Grazing Regimes And Climatic Conditions In Northeastern Spain?, F. De Bello, J. Leps, M. T. Sebastià
IGC Proceedings (1977-2023)
Understanding the mechanisms that maintain biodiversity in various ecosystems enables the development of management practices that prevent degradation (Canals & Sebastia, 2000). Each diversity index reflects some compositional properties and could be influenced differently by stress and disturbance factors (Magurran, 2004). In this study, we aim to reveal 1) which management practices and environmental factors affect biodiversity in rangelands of northeastern Spain and 2) the relationship between species diversity and functional diversity (SD and FD).
Number And Viability Of Seeds Recovered From Faeces Of Ruminant Animals, Alaba O. Jolaosho, Olufemi S. Onifade, O. M. Arigbede, Jimoh A. Olanite, T. O. Akinola
Number And Viability Of Seeds Recovered From Faeces Of Ruminant Animals, Alaba O. Jolaosho, Olufemi S. Onifade, O. M. Arigbede, Jimoh A. Olanite, T. O. Akinola
IGC Proceedings (1977-2023)
Ruminants play a significant role in the dissemination of plant seeds as a result of ingested seeds during grazing on pasture escaping digestion that are voided with the faeces and returned to the seed bank (Russi et al., 1992).
Grazing Behaviour And Selection Of Browse Species By Cattle, Sheep And Goats On Natural Pasture In The Sahelian Zone Of Burkina Faso, H. O. Sanon, C. Zoungrana-Kabore, I. Ledin
Grazing Behaviour And Selection Of Browse Species By Cattle, Sheep And Goats On Natural Pasture In The Sahelian Zone Of Burkina Faso, H. O. Sanon, C. Zoungrana-Kabore, I. Ledin
IGC Proceedings (1977-2023)
Pastures in semi-arid countries, are subject to seasonal variability. Browse species that are less dependent on rainfall, are highly valued. Goats are browsers, while cattle and sheep are grazers. However, faced with a scarcity of feed resources, especially in the late dry season, all animal species fall back on browse species. The objective of this study was to estimate feeding behaviour and browse species utilisation by cattle, sheep and goats on natural pasture in different seasons, and concurrently appreciate the indigenous knowledge on browse species in the study area.
A Systems Approach To Managing Greenhouse Gases On New Zealand Sheep And Beef Farms, M. G. Lambert, H. Clark
A Systems Approach To Managing Greenhouse Gases On New Zealand Sheep And Beef Farms, M. G. Lambert, H. Clark
IGC Proceedings (1977-2023)
Agriculture contributes more than 50% of New Zealand's greenhouse gas (GHG) emissions, mainly through release of methane (CH4) and nitrous oxide (N2O) from pastoral farms. Decisions on implementation of mitigation strategies will be made by individual farmers, who seek also to maintain financial performance in the face of declining terms of trade for commodities, hence leading to pressure to further intensify production. New Zealand (NZ) sheep & beef farms are typically hill country properties with a mixture of steep and easier topography, and year-round grazing of mainly permanent pastures. Specific GHG mitigation technologies will be difficult …
Diversity Of Diet Composition Decreases With Conjoint Grazing Of Cattle With Sheep And Goats, A. M. Nicol, M. B. Soper, A. V. Stewart
Diversity Of Diet Composition Decreases With Conjoint Grazing Of Cattle With Sheep And Goats, A. M. Nicol, M. B. Soper, A. V. Stewart
IGC Proceedings (1977-2023)
Conjoint or mixed grazing can affect the diet selected by each species (Nicol & Collins, 1990). Diet similarity coefficients are often used to compare pairs of diets (Krebs, 1999). However this approach is awkward when a number of contrasts are required in a multifactorial comparison. Species diversity is a descriptor of a particular environment. Many models provide an estimate of species diversity, the most common of these being a log-normal distribution (Tokeshi, 1996). We tested whether this model could be applied to dietary components selected from a pasture, and thus provide a coefficient of dietary diversity for the individual diets …
Nutritive Value Of Alopecurus Pratensis, Festuca Rubra, Arrhenatherum Elatius And Lolium Perenne Grown In The South Of Belgium, A. Nivyobizi, A. G. Deswysen, D. Dehareng, A. Peeters, Y. Larondelle
Nutritive Value Of Alopecurus Pratensis, Festuca Rubra, Arrhenatherum Elatius And Lolium Perenne Grown In The South Of Belgium, A. Nivyobizi, A. G. Deswysen, D. Dehareng, A. Peeters, Y. Larondelle
IGC Proceedings (1977-2023)
In Europe, recent strategies have aimed at encouraging farmers to use production techniques more efficient in preserving the environment and maintaining natural areas. Those strategies have encouraged the use of secondary grass species in forage production systems. However, the nutritive value of those grasses is not well known. Therefore, the aim of the present study was to evaluate the energy and nitrogen values of Alopecurus pratensis (ALPR), Festuca rubra (FERU) and Arrhenatherum elatius (AREL) under moderate rates of nitrogen (N) application (60 kg N/ha per cut) and a hay-cutting regime (2 cuts/year: 25 May and 9 July). Lolium perenne cv. …
Diversity Of Diet Composition Decreases With Conjoint Grazing Of Cattle With Sheep And Goats, A. M. Nicol, M. B. Soper, A. Stewart
Diversity Of Diet Composition Decreases With Conjoint Grazing Of Cattle With Sheep And Goats, A. M. Nicol, M. B. Soper, A. Stewart
IGC Proceedings (1977-2023)
Conjoint or mixed grazing can affect the diet selected by each species (Nicol & Collins, 1990). Diet similarity coefficients are often used to compare pairs of diets (Krebs, 1999). However this approach is awkward when a number of contrasts are required in a multifactorial comparison. Species diversity is a descriptor of a particular environment. Many models provide an estimate of species diversity, the most common of these being a log-normal distribution (Tokeshi, 1996). We tested whether this model could be applied to dietary components selected from a pasture, and thus provide a coefficient of dietary diversity for the individual diets …
Do Species And Functional Diversity Indices Reflect Changes In Grazing Regimes And Climatic Conditions In Northeastern Spain?, F. De Bello, J. Leps, M. T. Sebastià
Do Species And Functional Diversity Indices Reflect Changes In Grazing Regimes And Climatic Conditions In Northeastern Spain?, F. De Bello, J. Leps, M. T. Sebastià
IGC Proceedings (1977-2023)
Understanding the mechanisms that maintain biodiversity in various ecosystems enables the development of management practices that prevent degradation (Canals & Sebastia, 2000). Each diversity index reflects some compositional properties and could be influenced differently by stress and disturbance factors (Magurran, 2004). In this study, we aim to reveal 1) which management practices and environmental factors affect biodiversity in rangelands of northeastern Spain and 2) the relationship between species diversity and functional diversity (SD and FD).
Effect On Sward Botanical Composition Of Mixed And Sequential Grazing By Cattle And Sheep Of Upland Permanent Pasture In The Uk, J. E. Vale, M. D. Fraser, J. G. Evans
Effect On Sward Botanical Composition Of Mixed And Sequential Grazing By Cattle And Sheep Of Upland Permanent Pasture In The Uk, J. E. Vale, M. D. Fraser, J. G. Evans
IGC Proceedings (1977-2023)
Previous work has shown benefits of sequential grazing by cattle and sheep, with superior liveweight gains being recorded for lambs grazing swards previously grazed by cattle. A preliminary study of the effects of mixed sheep and cattle grazing also suggested that more extensively grazed swards offer scope for complementary grazing between sheep and cattle. The aim of this experiment was to directly compare these two approaches of integrating the grazing of cattle and sheep.
Effect Of Mixed And Sequential Grazing By Cattle And Sheep Of Upland Permanent Pasture On Liveweight Gain, M. D. Fraser, J. E. Vale, J. G. Evans
Effect Of Mixed And Sequential Grazing By Cattle And Sheep Of Upland Permanent Pasture On Liveweight Gain, M. D. Fraser, J. E. Vale, J. G. Evans
IGC Proceedings (1977-2023)
Previous work has shown benefits of sequential grazing by cattle and sheep, with superior liveweight gains being recorded for lambs grazing swards previously grazed by cattle. A preliminary study of the effects of mixed sheep and cattle grazing also suggested that more extensively grazed swards offer scope for complementary grazing between sheep and cattle. The aim of this experiment was to directly compare these two approaches of integrating the grazing of cattle and sheep.
Effects Of Breed And Stage Of Growing Season On The Metabolic Profile Of Sheep Grazing Moorland, V. J. Theobald, M. D. Fraser, J. M. Moorby
Effects Of Breed And Stage Of Growing Season On The Metabolic Profile Of Sheep Grazing Moorland, V. J. Theobald, M. D. Fraser, J. M. Moorby
IGC Proceedings (1977-2023)
Previous studies have shown that the diet of sheep grazing heather moorland is affected by season (Grant et al., 1987) and the proportion of Calluna vulgaris cover (Osoro et al., 2000). In order to investigate the impact of these factors on the associated nutrient supply of animals grazing heathland, blood samples were taken to monitor the metabolic status of different breeds of sheep at different stages of the growing season when grazing sites with different proportions of heather cover.
Characterising The Fermentation Capabilities Of Gut Microbial Populations From Different Breeds Of Cattle And Sheep Grazing Heathland, D. R. Davies, M. D. Fraser, V. J. Theobald, E. L. Bakewell
Characterising The Fermentation Capabilities Of Gut Microbial Populations From Different Breeds Of Cattle And Sheep Grazing Heathland, D. R. Davies, M. D. Fraser, V. J. Theobald, E. L. Bakewell
IGC Proceedings (1977-2023)
Previous studies have demonstrated differences in the diet composition of sheep and cattle when grazing heather moorland, and such differences may in turn lead to differences in rumen fermentation characteristics and associated adaptation to diet. To investigate this further an in vitro gas production experiment was conducted using inocula from different breeds of cattle and sheep grazing heathland.
A Farmer Friendly Feed Budget Calculator For Grazing Management Decisions In Winter And Spring, M. Curnow, M. W. Hyder
A Farmer Friendly Feed Budget Calculator For Grazing Management Decisions In Winter And Spring, M. Curnow, M. W. Hyder
IGC Proceedings (1977-2023)
The Western Australian (WA) environment is Mediterranean with annual legume/grass pastures and a 6 month growing season. In autumn where over grazing can impact pasture establishment and in spring, prior to senescence, when under grazing can mean significant losses of efficiency are crucial times for grazing management. Pasture utilisation is typically low (25-35%) due to conservative stocking regimes; key to increasing productivity is increasing pasture utilisation (Grimm, 1998). Increased levels of productivity require farmer sophistication in the way they feed budget. To this end, satellite technology is being used to provide farmers in southern Australia with weekly estimates of pasture …
Nitrogen Leaching From Cattle, Sheep And Deer Grazed Pastures In New Zealand, Keith Betteridge, Sterwart F. Ledgard, Coby J. Hoogendoorn, M. G. Lambert, Z. A. Park, Des A. Costall, P. W. Theobald
Nitrogen Leaching From Cattle, Sheep And Deer Grazed Pastures In New Zealand, Keith Betteridge, Sterwart F. Ledgard, Coby J. Hoogendoorn, M. G. Lambert, Z. A. Park, Des A. Costall, P. W. Theobald
IGC Proceedings (1977-2023)
The impacts of intensified grazing in New Zealand are being reflected in declining quality of groundwater, streams and lake water. Manipulation of ratios of grazing animal species may be one way farmers can reduce nitrogen (N) emissions to ground water. The present research quantifies nitrate and ammonium leaching losses from rotationally grazed sheep, cattle and deer pastures in a common environment.
The Contribution Of Participatory Research: On-Farm Research, P. F. Fennessy, N. J. Daniels, S. A. Chadwick, P. A. Speck
The Contribution Of Participatory Research: On-Farm Research, P. F. Fennessy, N. J. Daniels, S. A. Chadwick, P. A. Speck
IGC Proceedings (1977-2023)
Participatory research in agriculture may range from research and technology development (R&D), carried out on a research station with some involvement of farmers, through to genuine participatory research involving researchers and farmers working together. The latter involves the end-user in actually carrying out aspects of the research and/or in the development and evaluation of technology that is appropriate to commercial enterprises. Researchers often question the validity of the ‘findings of on-farm participatory research’ as they are more comfortable with the ‘controlled’ environment of the research station. However if research is to be applied appropriately on farms, it must go through …
Oestrogenic Subterranean Clover Guide. Identification And Remediation, Kevin J. Foster, Megan H. Ryan, Daniel R. Kidd
Oestrogenic Subterranean Clover Guide. Identification And Remediation, Kevin J. Foster, Megan H. Ryan, Daniel R. Kidd
Bulletins 4000 -
Subterranean clover (subclover, Trifolium subterraneum L.) is an annual pasture legume that provides high quality feed for livestock. It is estimated to be sown over 30 million hectares across southern Australia, with cultivars developed for the low, medium and high rainfall zones. Unfortunately, some older cultivars contain high levels of phytoestrogen which can affect the reproductive system of sheep and cause other health issues. This became a significant issue for sheep producers from the 1940s as new land was cleared and sheep grazed subclover-dominant pastures. There was a collection of livestock issues observed and these were grouped together under the …
Predicting Forage Intake By Sheep Through The Pampa Corte Model Or Nrc, C. A. Pozo, Gilberto V. Kozloski, H. M. N. Ribeiro Filho, J. F. Tourrand, Vicente Celestino Pires Silveira
Predicting Forage Intake By Sheep Through The Pampa Corte Model Or Nrc, C. A. Pozo, Gilberto V. Kozloski, H. M. N. Ribeiro Filho, J. F. Tourrand, Vicente Celestino Pires Silveira
IGC Proceedings (1977-2023)
The aim of the present study was to evaluate the precision and accuracy of the Pampa Corte and National Research Council (2007; NRC) models for predicting forage intake (FI) by sheep. Individual data (n = 213) of observed FI, body weight and chemical composition of consumed diet were taken from fifteen indoor digestibility trials conducted with male sheep housed in metabolic cages and fed only forage ad libitum. The diets were composed of tropical grasses, temperate grasses and legumes. Individual observations of FI were averaged by treatment (n = 32) into each experiment which were then compared to FI …
Pasture Utilization At Islands In Northern Norway, V. Lind, Ø. Holand, F.-A. Haugen, G. Steinheim
Pasture Utilization At Islands In Northern Norway, V. Lind, Ø. Holand, F.-A. Haugen, G. Steinheim
IGC Proceedings (1977-2023)
The Norwegian sheep industry is based on utilization of “free” rangeland pasture resources. Use of mountain pastures is dominating, with about two million sheep grazing these pastures during summer. Regional challenges related to e.g., loss of sheep to large carnivores make farmers think differently. The Norwegian coastline is among the longest globally and is scattered with islets and islands. Alone along the coast of Nordland county, it is estimated more than 14,000 islands. Use of islands for summer pasture is an alternative but there is a limited knowledge about such a management system. In this study, we examined lambs’ average …
Influence Of Grassland Management And Grazing By Different Farm Animals On Animal Performance And Flora Alterations, W. Jentsch, H.-D. Matthes, A. Admasu, H. Möhring
Influence Of Grassland Management And Grazing By Different Farm Animals On Animal Performance And Flora Alterations, W. Jentsch, H.-D. Matthes, A. Admasu, H. Möhring
IGC Proceedings (1977-2023)
The objectives of this study were to test the possibilities of using different farm animals for landscape care on extensive pasture, taking into account their particular performance, and to analyse alterations of the flora in consequence of grazing by different animals and various pasture management. Salers had the highest (836g/d) and Galloways (584g/d) the lowest live weight gain as compared with the other breeds (771g/d). Lambs had higher live weight when grazing together with cattle and horses (mixed grazing) than under one species grazing. The number of legume increased and that of grass decreased. Following 3 years the grazing animals …
Forage Management For Extending The Grazing Season, David W. Koch, C. M. Lux, J. W. Flake
Forage Management For Extending The Grazing Season, David W. Koch, C. M. Lux, J. W. Flake
IGC Proceedings (1977-2023)
Studies were conducted to determine ways to extend grazing season with forages adequate to meet the needs of grazing animals and to reduce the cost of livestock production. Perennial grasses were swathed, windrowed and left in the field until they were winter-grazed with bred heifers. Corn (Zea mays L.) was stockpiled for winter grazing with lambs and ewes. Windrowed grasses increased in acid detergent fiber (ADF) and neutral detergent fiber (NDF) compared with stored hay, but crude protein content, heifer weight gain and body condition change was similar for both forages. An economic value of $218 ha-1 from …
Semiarid Grassland And Winter Cereals For Lamb Production In Northeast Patagonia, Argentina, D. P. Miñón, G. G. Durañona, J. C. García Vinent, H. D. Giorgetti, G. D. Rodríguez
Semiarid Grassland And Winter Cereals For Lamb Production In Northeast Patagonia, Argentina, D. P. Miñón, G. G. Durañona, J. C. García Vinent, H. D. Giorgetti, G. D. Rodríguez
IGC Proceedings (1977-2023)
In northeastern Patagonia where grain crops often led to harvest failure, low yields and a high drought risk, a lamb production system was established. On a 10 years old agriculture wheat cropping was interrupted in 1996, allowing re-vegetation through exclusion of grazing. Natural grassland recovered, prevailing the species Stipa tenuis, Piptochaetium napostaense, Stipa ambigua. Part of the plot was sown to wheat grass (Thinopyrum ponticum). In 1999, to improve sheep feeding, oat (Avena sativa) and barley (Hordeum vulgare) were sown for grazing during winter-spring season. In this system Corriedale sheep, Texel x australian …