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Farmers’ Perceptions On Different Forage Types In Southern Highlands Of Tanzania, B. Nzogela, S. W. Mwendia, A. J. Mwilawa, J. Kizima, J. Bwire, A. O. Notenbaert
Farmers’ Perceptions On Different Forage Types In Southern Highlands Of Tanzania, B. Nzogela, S. W. Mwendia, A. J. Mwilawa, J. Kizima, J. Bwire, A. O. Notenbaert
IGC Proceedings (1977-2023)
Feed and forages take the bulk of inputs required in livestock production. Inadequate forages in quality and quantity in sub-Saharan Africa is responsible for low livestock productivity. Addressing livestock feed requirements presents quick wins in livestock productivity compared to breeding and health. In a Climate Smart Dairy project implemented in Tanzania, we demontrated several forage options to farmers including, two cultivars of Pennisetum purpureum, two Urochloa hybrids, Chrloris gayana and Tripsacum andersonii (control). Where applicable, the grasses were intercropped with either one of the following forage legume, Desmodium intortum, Lablab purpureus or Stylosanthes guiyanensis. Fourteen forage treaments …
Examining The Impact Of Patch Burning On Livestock Grazing Patterns In Edwards Plateau, Texas, W. G. Gao, J. P. A. Angerer, X. B. W. Wu, D. T. Tolleson
Examining The Impact Of Patch Burning On Livestock Grazing Patterns In Edwards Plateau, Texas, W. G. Gao, J. P. A. Angerer, X. B. W. Wu, D. T. Tolleson
IGC Proceedings (1977-2023)
Production of sheep, goat, and cattle are major agricultural enterprises on West Texas rangelands, especially in the Edwards Plateau. In this region, the use of fire as a management tool was suppressed until recently. Although previous studies have been conducted to evaluate cattle use of burned versus unburned patches, there has been a lack of studies where combinations of livestock species grazing together on patch burned areas have been evaluated. The objective of this study is to examine grazing patterns of cattle, sheep and goats, both spatially and temporally, on areas where patch burning has been implemented. The study site …
Evaluation Of Morphogenesis And Yield Of Three Pennisetum Purpureum Varieties In South-West, Nigeria, Victoria O. A. Ojo, T. A. Adeyemi, D. K. Oyaniran, G. A. Akinade, Olufemi S. Onifade
Evaluation Of Morphogenesis And Yield Of Three Pennisetum Purpureum Varieties In South-West, Nigeria, Victoria O. A. Ojo, T. A. Adeyemi, D. K. Oyaniran, G. A. Akinade, Olufemi S. Onifade
IGC Proceedings (1977-2023)
This experiment, conducted at the Federal University of Agriculture, Abeokuta, Nigeria evaluated the morphogenesis of three varieties of Pennisetum purpureum used in this study, which were the local, purple, and FI variety at different stages of growth. The plants were established through vegetative plant parts (stems) sourced from a previously established plot and planted using 1 m × 1 m spacing on plots measuring 4 m × 5 m. The plants were fertilized with split doses of poultry manure at 4 t/ha (equivalent to 120 kg N/ha). The experiment was laid out as a Randomized Complete Block Design. Data on …
Effects Of Stages Of Growth On Dry Matter Yield And Nutrient Composition Of Red Clover In The Year Of Establishment In Jos, Plateau State, Nigeria, T. T. Akpensuen, J. T. Amodu, O. A. T. Namo, R. J. Tanko
Effects Of Stages Of Growth On Dry Matter Yield And Nutrient Composition Of Red Clover In The Year Of Establishment In Jos, Plateau State, Nigeria, T. T. Akpensuen, J. T. Amodu, O. A. T. Namo, R. J. Tanko
IGC Proceedings (1977-2023)
An experiment was conducted in Jos, Nigeria to evaluate the effects of stages of growth on dry matter yield and nutrient composition of Red clover (Trifolium pratense var. AberClaret) in the year of establishment. The treatments were five (5) stages of growth (5, 9, 13, 17 and 21) weeks after sowing (WAS). The five stages of growth were replicated five times in a Latin Square Design. The land was divided into twenty five plots of 3 m X 3 m each. The spacing between each plot was 1m along the rows and columns. Growth components and DM yield were …
Effects Of Maturity And Drying Method On The Nutritive Value Of Tropical Grasses In Nicaragua, Rocky Lemus, R. Van Der Hoek, Y. C. Newman, M. Mena, K. A. Albrecht
Effects Of Maturity And Drying Method On The Nutritive Value Of Tropical Grasses In Nicaragua, Rocky Lemus, R. Van Der Hoek, Y. C. Newman, M. Mena, K. A. Albrecht
IGC Proceedings (1977-2023)
Tropical grasses are key components for both grazing and conserved forages in sustainable livestock systems (beef and dairy) in Central America. The objective of the study was to evaluate grasses used in Nicaragua and their nutritive value contribution as preserved forage during the dry season under different drying methods. Five tropical bunch grasses (Andropogon gayanus, Hyparrheniarufa, Urochloabrizantha, Megathyrsus maximus, and Cenchruspurpureus) were sampled across different farms in Nicaragua in 2014 and 2015 using three replications. Forage samples were collected at 2, 4, 6, and 8-wk maturity as well as season long samples. Samples drying …
Simple Guidelines For Deciding When Soil Variability Does – And Doesn’T – Matter For Rangeland Management And Restoration, Jeff E. Herrick, J. Maynard, B. Bestelmeyer, A. Ganguli, J. Glover, K. Johnson, D. Kimiti, J. Neff, G. Peacock, J. Peters, S. Salley, P. Shaver, K. Shepherd, Z. Stewart, R. Van Den Bosch
Simple Guidelines For Deciding When Soil Variability Does – And Doesn’T – Matter For Rangeland Management And Restoration, Jeff E. Herrick, J. Maynard, B. Bestelmeyer, A. Ganguli, J. Glover, K. Johnson, D. Kimiti, J. Neff, G. Peacock, J. Peters, S. Salley, P. Shaver, K. Shepherd, Z. Stewart, R. Van Den Bosch
IGC Proceedings (1977-2023)
“Rangelands in most parts of the world are relatively homogenous and can be managed uniformly at the landscape scale” or “rangelands are extremely diverse and require different approaches even at the landscape scale.” Both statements are made frequently by rangelands scientists and managers. Both are correct. Whether or not it is worthwhile to consider soil variability when planning management and restoration at the landscape scale depends on objectives, location, and the management or restoration strategies under consideration. Together these factors determine whether outcomes are likely to be different at different locations in the landscape, and whether those outcomes can be …
Effects Of Banana Peels On Chicken Weight Gain And Egg Production In The Urban And Peri-Urban Areas Of Aksum City, Ethiopia, H. G. Araya, S. G. Gebrekristos, W. V. Oliver
Effects Of Banana Peels On Chicken Weight Gain And Egg Production In The Urban And Peri-Urban Areas Of Aksum City, Ethiopia, H. G. Araya, S. G. Gebrekristos, W. V. Oliver
IGC Proceedings (1977-2023)
High feed cost of running urban-animal-agriculture and huge city wastes are challenges of the growing towns in modern Ethiopia. Egg production microenterprise is steadily growing due to its low initial investment and ready market in urban and peri-urban areas. However, cost of egg production is high due to the rising cost of corn, the main feed ingredient in poultry rations. Using banana peels, which forms a great proportion of city waste in Ethiopia, is seen as a way of not only reducing the waste, but also as an alternative low-cost feed supplement that could help enhance egg production by small-holder …
Restoring Rangelands For Nutrition And Health For Humans And Livestock, I. Öborn, A. Bargués Tobella, G. Bostedt, A. Hörnell, P. Knutsson, K. Lindvall, D. Mpairwe, S. Mureithi, G. Nyberg, Y. Nyberg, B. Schumann, A. Turinawe, T. Vågen, D. Wakjira, L. Winowiecki, E. Wredle
Restoring Rangelands For Nutrition And Health For Humans And Livestock, I. Öborn, A. Bargués Tobella, G. Bostedt, A. Hörnell, P. Knutsson, K. Lindvall, D. Mpairwe, S. Mureithi, G. Nyberg, Y. Nyberg, B. Schumann, A. Turinawe, T. Vågen, D. Wakjira, L. Winowiecki, E. Wredle
IGC Proceedings (1977-2023)
Drylands cover 40% of the global land area and host 2 billion people, of which 90% live in low- or middleincome countries. Drylands often face severe land degradation, low agricultural productivity, rapid population growth, widespread poverty, and poor health. Governance structures and institutions are often eroded. Livestock-based livelihoods, largely depending on seasonal migration are common. Pastoralist communities and their land are highly vulnerable to climate shocks, while there are also changes in land tenure, insecurity/conflicts and rapid infrastructure development. Drylands Transform is an interdisciplinary research project revolving around the UN Sustainable Development Goals (SDGs). The project aim is to contribute …
Effect Of Seeding Rates On Productivity And Quality Of Alfalfa In Northern Area Of Korea, Jong Geun Kim, C. Liu, S. N. Wei, Y. F. Li, E. C. Jeong, H. J. Kim
Effect Of Seeding Rates On Productivity And Quality Of Alfalfa In Northern Area Of Korea, Jong Geun Kim, C. Liu, S. N. Wei, Y. F. Li, E. C. Jeong, H. J. Kim
IGC Proceedings (1977-2023)
Alfalfa cultivation in South Korea is not common. There are many reasons, but low productivity has been extremely limited. Although alfalfa growth was poor due to boron deficiency in the soil, the problem has recently been solved. Nevertheless, the cultivation of alfalfa is not expanding. About 200,000 tonnes of alfalfa hay are imported every year. Therefore, this study was conducted to find a way to replace imported hay by expanding alfalfa cultivation in Korea. Alfalfa (P5444) was sown in northern part of South Korea (Pyeongchang). Alfalfa was sown in September 2018 with different seeding rates (20, 30 and 40 kg/ha) …
Effect Of Prompt-Delayed Packaging And Ensiling Time On Fermentation And Aerobic Stability Of Soybean Curd Residue, Ajmal Wali, Takeshi Tsuruta, Naoki Nishino
Effect Of Prompt-Delayed Packaging And Ensiling Time On Fermentation And Aerobic Stability Of Soybean Curd Residue, Ajmal Wali, Takeshi Tsuruta, Naoki Nishino
IGC Proceedings (1977-2023)
Wet soybean curd residue (SCR) obtained from two tofu factories (F1 and F2) was anaerobically stored with or without added beet pulp (BP). Sealing was performed on the day of tofu production (prompt sealing [PS]) or 2 days after SCR was piled and unprocessed (delayed sealing [DS]). Predominant lactic acid fermentation was observed regardless of the sealing time and BP addition. Acinetobacter spp. were the most abundant (> 67%) bacteria in pre-ensiled SCR, regardless of the factory and sealing time. In PS silage, the abundances of typical lactic acid-producing bacteria, such as Lactobacillus, Pediococcus, and Streptococcus spp. reached …
Effect Of Native Grassland Intensification Over Cattle Performance, N. Caram, F. Casalás, M. Cadenazzi, R. Zanoniani, P. Boggiano
Effect Of Native Grassland Intensification Over Cattle Performance, N. Caram, F. Casalás, M. Cadenazzi, R. Zanoniani, P. Boggiano
IGC Proceedings (1977-2023)
The objective was to evaluate the effect of different levels of intensification in native grassland over cattle live weight gain (LWG), stocking rate (SR) and average daily gain (ADG) in Uruguay. The study was carried out in 7.8 ha in Paysandú, between winter 2015 and autumn 2019. Experiment was a randomized complete block design, with 4 replicates. The four treatments applied were native grassland (NG), NG overseeded with Trifolium pratense (6 kg.ha-1) and Lotus tenuis (6 kg.ha-1) + 40 kg.ha-1 of P2O5 (NGO), NG fertilized with 60 kg.ha-1 of N + …
Relationship Between Exchangeable Acidity And Persistence Of Orchardgrass (Dactylis Glomerata) In Temperate Pastures Under Different Management, H. Kakihara, S. Ogura
Relationship Between Exchangeable Acidity And Persistence Of Orchardgrass (Dactylis Glomerata) In Temperate Pastures Under Different Management, H. Kakihara, S. Ogura
IGC Proceedings (1977-2023)
Orchardgrass is a high productive, highly nutritive grass, but its persistence is low under acid soil condition. Therefore, to obtain the information on the effect of soil acidity on the persistence of orchardgrass in acid soil grasslands, we investigated the relationship between exchangeable acidity (y1) and orchardgrass in sown pastures. Eight temperate pastures (four cutting meadows [CMs] and four cattle grazing pastures [GPs]) were used for vegetation survey and soil samplings. Six or three line transects (50 m each) were fixed in each meadow or pasture, and measurement location (three quadrats 20 cm×20 cm in size and 50 …
Isotopic Δ15N Signature Of Grass-Alone And Grass-Legume Tropical Pastures To Estimate Sources Of Nitrogen To Grasses In Farmer Managed Pastures, Daniel M. Villegas, J. Velasquez, J. Arango, K. Obregon, Idupulapati M. Rao, G. Rosas, A. Oberson
Isotopic Δ15N Signature Of Grass-Alone And Grass-Legume Tropical Pastures To Estimate Sources Of Nitrogen To Grasses In Farmer Managed Pastures, Daniel M. Villegas, J. Velasquez, J. Arango, K. Obregon, Idupulapati M. Rao, G. Rosas, A. Oberson
IGC Proceedings (1977-2023)
Vast areas of tropical forest have been converted into pastures sown with introduced grasses (Urochloa spp.). The majority of pastures exist in some stage of degradation, which has dramatic ecological and economic consequences. Our objective was to determine isotopic 15N signature of grass alone and grass-legume pastures to estimate sources of nitrogen (N) to grasses in farmer managed pastures. This work contributes to enhancing the sustainability of tropical pastures in forest margins through the integration of legumes. The overarching hypothesis tested was that legumes associated with grasses will improve nutrient supply via symbiotic fixation and mobilization of soil …
Influence Of Grazing Intensity On Nutrient Concentrations In Grass Tissue: Evidence From Two Savannah Grass Species, C. Munyati
IGC Proceedings (1977-2023)
High grazing intensity can accelerate the recycling of animal nutrients on savannah rangelands through the deposition of dung and, subsequently, nutrient mineralisation, uptake and concentration in grass tissue. The actual magnitude of this influence can vary depending on the grazing system. This study derived grazing system-dependent magnitudes of the influence of grazing intensity on concentrations of major (N, P, K, Ca, Mg, Na) and trace (B, Co, Cu, Cr, Fe, Mn, Mo, Ni, Se, Zn) animal nutrients in above ground grass tissue. Two grass species were examined: Brachiaria nigropedata, a decreaser, and Eragrostis lehmanniana, an increaser. For the …
Seasonality And Grazing Management Effect On Growth And Nutritional Composition Of Herbage On Semi-Natural Grasslands Grazed By Dairy Cows In Southwest Germany, E. Velasco, S. Perdana-Decker, J. Werner, U. Dickhoefer
Seasonality And Grazing Management Effect On Growth And Nutritional Composition Of Herbage On Semi-Natural Grasslands Grazed By Dairy Cows In Southwest Germany, E. Velasco, S. Perdana-Decker, J. Werner, U. Dickhoefer
IGC Proceedings (1977-2023)
Natural and semi-natural grasslands represent an attractive forage source for cows in organic dairy farming. Throughout the grazing season, however, diverse factors such as climatic conditions, botanical composition, as well as grazing and herd management, can influence growth and nutritive value of forage on grasslands. We aimed at investigating the influence of seasonality and grazing management in forage growth and nutritional quality in seven commercial organic dairy cattle farms during the grazing season 2019 in South Germany. Therefore, forty exclusion cages (1 m2) were installed on pastures, which were under three different grazing systems: rotational, short-grass, and continuous …
Effect Of Cutting Stage And Turning Frequency On Nutritive Value And Digestibility Of Two Tropical Forages, M. M. Chiphwanya, F. C. Chigwa, H. D. C. Msiska
Effect Of Cutting Stage And Turning Frequency On Nutritive Value And Digestibility Of Two Tropical Forages, M. M. Chiphwanya, F. C. Chigwa, H. D. C. Msiska
IGC Proceedings (1977-2023)
In Malawi, feed shortage during the dry season (June-October) is a critical factor affecting smallholder dairying. Though suitable improved forages were long introduced, important parameters that indicate forage and hay quality for dry season feeding have been less well studied. This study evaluated the effect of cutting stage and turning frequency at drying of two tropical forages on nutrient composition and digestibility. A 23 factorial experiment laid out in Randomized Complete Block Design was conducted in Mzuzu milk shed area. Centrosema pubescens and Chloris gayana were established on four plots (5m x 3m) each by 24 dairy farmers; two …
Effect Of Cutting Height On Productivity And Quality Of Alfalfa In Northern Area Of Korea, Jong Geun Kim, C. Liu, S. N. Wei, Y. F. Li, E. C. Jeong, H. J. Kim
Effect Of Cutting Height On Productivity And Quality Of Alfalfa In Northern Area Of Korea, Jong Geun Kim, C. Liu, S. N. Wei, Y. F. Li, E. C. Jeong, H. J. Kim
IGC Proceedings (1977-2023)
Alfalfa is a very important forage for livestock feeding. In particular, due to the high crude protein content, it is widely used as a dairy cattle feeds. However, the cultivation of alfalfa is quite limited and main source is imported hay in Korea. There are many reasons, but most importantly, low productivity due to lack of boron in the soil. This experiment was conducted to expand domestic production and use of alfalfa. Alfalfa was sown in the fall of 2018 at 30 kg/ha seeding rate. Alfalfa was harvested four times (3 May, 2 July, 11 September and 13 October) in …
Economic Injury Level For Bermudagrass Stem Maggot (Diptera: Muscidae) In Bermudagrass Forage Production In Texas, V. Corriher-Olson, A. Knutson, F. Mitchell
Economic Injury Level For Bermudagrass Stem Maggot (Diptera: Muscidae) In Bermudagrass Forage Production In Texas, V. Corriher-Olson, A. Knutson, F. Mitchell
IGC Proceedings (1977-2023)
The bermudagrass stem maggot, Atherigona reversura Villeneuve, was first reported damaging bermudagrass Cynodon dactylon (L.) Pers grown for forage in 2010 in the southeastern US. Damage results from individual larvae feeding internally on the vascular tissue just above the terminal node of the grass stem. Damage slows plant growth and reduces forage accumulation. To address the need for economic guidelines to manage this new pest, the relationship between the percent of stems damaged by bermudagrass stem maggot and forage yield was measured in commercial bermudagrass hay fields in northcentral Texas during 2016 and 2017. The slope of the linear regression, …
Diversity And Taxonomic Identity Of Rumen Bacterial Community In Cattle Fed Different Diets, B. K. Korir, J. K. N. Kuria, D. M. Mwangi, M. M. M. Wanyoike
Diversity And Taxonomic Identity Of Rumen Bacterial Community In Cattle Fed Different Diets, B. K. Korir, J. K. N. Kuria, D. M. Mwangi, M. M. M. Wanyoike
IGC Proceedings (1977-2023)
In this study, the identity of rumen bacterial community and their taxonomic classification in Zebu heifers (n=24) fed 4 different diets (range grasses, Bracharia MulatoII, Azolla and Cassava leaf meal) was surveyed using metagenomics sequencing of the 16SrRNA gene. Rumen liquor samples were collected from the heifers from which a total of 192 DNA samples were amplified and the resulting 16S rRNA sequences compared to the existing sequences at the National Centre for Biotechnology Information (NCBI) BLAST database through the MetagenAssist . Bioinformatics analyses indicated that 17 operational taxonomic units (OTUs) were present at the phylum level. Of these, 43.3% …
Current Status And Future Strategy In Megathyrsus Maximus Breeding Program At The Alliance Bioversity - Ciat, L. M. Hernandez, V. Castiblanco
Current Status And Future Strategy In Megathyrsus Maximus Breeding Program At The Alliance Bioversity - Ciat, L. M. Hernandez, V. Castiblanco
IGC Proceedings (1977-2023)
Megathyrsus maximus (Jacq.) B.K. Simon & S.W.L. Jacobs is one of the most important grass species cultivated for cattle production in cut and carry systems. There is a need to search for superior hybrids with high potential for mitigation and adaptation to climate change. A big proportion of the M. maximus germplasm, preserved in the CIAT GeneBank has been agronomically characterized and genotypes with desirable traits such as high drought tolerance, high BNI potential (Biological nitrification inhibition), high nutritional quality (biomass production, dry matter, crude protein, acid detergent fiber, neutral detergent fiber and dry matter digestibility) and high seed production …
Cross-Protection Against Als-Inhibiting Herbicides In Non-Transgenic Switchgrass Selected For Imazapic Resistance, C. M. Adams, J. I. Morrison, B. S. Baldwin
Cross-Protection Against Als-Inhibiting Herbicides In Non-Transgenic Switchgrass Selected For Imazapic Resistance, C. M. Adams, J. I. Morrison, B. S. Baldwin
IGC Proceedings (1977-2023)
Switchgrass (Panicum virgatum L.) is a North American native warm-season perennial grass that is a cornerstone species in conservation systems and can also be utilized as a high-quality forage. ‘Tusca’ is a cultivar of lowland switchgrass selected from ‘Alamo’ (USDA NRCS, Knox City, TX) for resistance to the herbicide imazapic. This study was conducted to determine if selection in Tusca conferred cross-protection to other ALS-inhibiting herbicides. Five ALS-inhibiting herbicides, including imazapic (IPIC), imazamox (IMOX), imazapyr (IPYR), imazethapyr (ITHR), and metsulfuron methyl (MSUL), were tested on Tusca, Alamo, and wildtype johnsongrass (Sorghum halepense L. (Pers.)) at five rates (25, …
Changes In Defoliation Patterns Of Plant Functional Groups Under Variable Herbage Allowance In Campos Grasslands, N. Caram, F. Casalás, Pablo Soca, M. Wallau, M. Cadenazzi, P. Boggiano
Changes In Defoliation Patterns Of Plant Functional Groups Under Variable Herbage Allowance In Campos Grasslands, N. Caram, F. Casalás, Pablo Soca, M. Wallau, M. Cadenazzi, P. Boggiano
IGC Proceedings (1977-2023)
Several studies have evaluated separately forage production, botanical composition, leaf traits and animal performance. However, few of them have focused on defoliation patterns at the level of functional groups (FGs) under different and variable herbage allowance (HA), especially in natural, diverse grasslands. The objective was to evaluate the relationship between HA and leaf traits on defoliation patterns of mature beef cows in the autumn, winter and spring. We evaluated the grazing probability (GP), intensity of defoliation (ID), and leaf traits on 14 species that represent more than 80% of total dry matter of the pasture. The experiment at which we …
Assessment Of Climate Events In Changma Season (Korean Monsoon) For Production Trend Of Sorghum-Sudangrass Hybrid (Sorghum Bicolor L.) In The Central Inland Regions Of Korea Using Time Series Analysis, M. Kim, J. Y. Kim, M. H. Jo, K. Sung, H. Jo
Assessment Of Climate Events In Changma Season (Korean Monsoon) For Production Trend Of Sorghum-Sudangrass Hybrid (Sorghum Bicolor L.) In The Central Inland Regions Of Korea Using Time Series Analysis, M. Kim, J. Y. Kim, M. H. Jo, K. Sung, H. Jo
IGC Proceedings (1977-2023)
This study aimed to assess the impact of climate events in the Changma (Korean Monsoon) season on the production trend of sorghum-sudangrass hybrid (SSH) in central inland regions using time series analysis. The dataset in Suwon from 1988–2013 (n = 388) was generated by merging SSH data and climate data. The accumulated temperature (SHAT, ℃), rainfall amount (SHRA, mm) and sunshine duration (SHSD, hr) from seeding to harvesting were used to assess their impact on the trend of dry matter yield (DMY, kg/ha) for SSH. Furthermore, heavy rainfall (HRF) and typhoons (TPH) were considered as climate events. As a result, …
Analysis Of Ensiling Suitability Of Moringa, A Woody Plant, Z. Du, F. Yang, Y. Lin, Y. Cai
Analysis Of Ensiling Suitability Of Moringa, A Woody Plant, Z. Du, F. Yang, Y. Lin, Y. Cai
IGC Proceedings (1977-2023)
To effectively use the woody plant resources as animal feed, the ensiling suitability of Moringa including the dynamics of microbial community, chemical composition, and silage fermentation were studied. Tender stems and leaves of Moringa at the full-bloom stage of second cutting was used for silage preparation in Guizhou, China. After 3, 7, 15, 30, and 60 days of ensiling, five silos for each treatment were opened to analyze the fermentation characteristics. Moringa before ensiling contained 104 lactic acid bacteria (LAB), 106 aerobic bacteria, 104 coliform bacteria, 102 yeast, and 104 mold based on colony-forming unit/g …
Impact Of Grazing Management On Productivity Of Tropical Grasslands, Moacyr Corsi, Geraldo B. Martha Jr., Domício Do Nascimento Jr., Marco A. A. Balsalobre
Impact Of Grazing Management On Productivity Of Tropical Grasslands, Moacyr Corsi, Geraldo B. Martha Jr., Domício Do Nascimento Jr., Marco A. A. Balsalobre
IGC Proceedings (1977-2023)
Beef and dairy cattle enterprises from tropical pasture-based systems are notoriously of low productivity. The low soil fertility, the exploitation of native grasslands, the low genetic potential of the animals and the poor management of soil, pasture and animal components are all arguments used to explain these “low-productivity systems”. In fact, research has consistently indicated up to 50% increase in calving rate when animals grazing unfertilized pastures were supplemented with trace-mineralized salt (Table 1) but unfortunately less than 90% of Brazilian farmers use this management strategy (Tosi, 1997). However, a recent survey conducted by São Paulo State government showed that …
Productivity Of Winter And Spring Native Improved Vegetation Under Different Grazing Stocking Rates On Basaltic Soil, M. Bemhaja
IGC Proceedings (1977-2023)
Improved grassland with Lotus corniculatus, Trifolium repens and annual phosphorus fertilization, was evaluated during winter and spring for five consecutive years under grazing at three different stocking rates on medium basaltic soil. Specific contribution of Lotus and Trifolium reached 67% of grassland community in the first year. Stipa setigera and Poa lanigera increased their contribution from 0.8 to 17% in the fourth year of grazing experiment. Highest average value of crude protein was 19% during the second year and was related to legumes contribution. Forage availability was always up to 1.5 ton MS/ha at the three stocking treatments. Average daily …
Impact Of Enclosures On Range Productivity In Chepareria West Pokot County Kenya, Regina W. Waiganjo, P. N. Mwangi, Rebecca H. Karanja
Impact Of Enclosures On Range Productivity In Chepareria West Pokot County Kenya, Regina W. Waiganjo, P. N. Mwangi, Rebecca H. Karanja
IGC Proceedings (1977-2023)
In the semi-arid areas of West Pokot particularly Chepareria, majority of the people live semi sedentary lives while others are nomadic pastoralists. In the last three decades, there have been concerted efforts to restore and improve rangeland in this area. Use of enclosures, which is one of the key interventions, by the Vi Agro- forestry a Non-Governmental Organisation, enhancing with many ecological processes such as disturbance, is a method of rehabilitating degraded rangeland, which in turn affects vegetation dynamics. Adoption of these strategies by farmers has been gradual and some areas are still open and degraded. The aim of this …
Lamb Stocking Rate And Supplementation Effects On Mixed Triticale And Ryegrass Swards Characteristics, R. San Julián, Fabio Montossi, L. Guarino, F. Pittaluga
Lamb Stocking Rate And Supplementation Effects On Mixed Triticale And Ryegrass Swards Characteristics, R. San Julián, Fabio Montossi, L. Guarino, F. Pittaluga
IGC Proceedings (1977-2023)
An experiment was carried out from 9 June to 22 October 1997, using a Lolium multiflorum L. (ryegrass) and Triticosecale Wittmack (triticale) mixed sward grazed by lambs in a rotational grazing system, to determine the effect of stocking rate (SR; 20, 30 and 40 lambs/ha) and supplementation (S; with or without) on herbage production, composition and nutritive value. SR affected significantly before and after grazing herbage mass and sward height, being higher the values of these variables at the lower SR (3232, 2611 and 2345 kg DM ha-1, P < 0.05; 2557, 1761 and 1612 kg DM ha-1, P < 0.01; 17, 11 and 9 cm, P < 0.01 respectively). Increments in SR had an effect on post grazing sward composition, increasing the proportion of ryegrass (32, 36 and 47 %, P< 0.05) and decreasing triticale contribution (68, 64 and 55 %, P< 0.05) for 20, 30 and 40 lambs/ha. The effect of SR on sward nutritive value was not very clear. Before grazing, S affected significantly herbage mass, being higher the values at the supplemented treatments (2787 vs. 2672 kg DM ha-1, P < 0.10). This experiment showed the high potential of forage production and nutritive value of ryegrass and triticale swards for lamb production in the sandy soil region of Uruguay, and the dominant effect of SR, compared to S, on most of the sward variables considered.
Effect Of Winter Grazing Management Of Stockpiled Native Pastures Of Basaltic Soils Of Uruguay On Daily Gains Of Heifers, G. Pigurina, R. Castells, G. Reyes, E. J. Berretta
Effect Of Winter Grazing Management Of Stockpiled Native Pastures Of Basaltic Soils Of Uruguay On Daily Gains Of Heifers, G. Pigurina, R. Castells, G. Reyes, E. J. Berretta
IGC Proceedings (1977-2023)
The effect of three grazing systems of fall stockpiled native pastures on the winter gains of 66 Hereford heifers (135 kg) was studied. Treatments were: continuos grazing (CG); (C7) the plot was divided in 12 and each was grazed for 7 days and (C28), the plot was divided in 3 and each were grazed for 28 days. Heifers were weighed every 14 days and grazing behaviour was recorded. Stockpiled HM was greater (P< 0.05) in C7 and C28 than in CG (988, 912, and 604 kg DM/ha, respectively). Herbage allowance (HA) was greater (P< 0.01) in CG followed by C28 and C7 (11.7, 6.6 and 5.9 kg DM/100 kg LW, respectively). Post-grazing HM was greater (P0.05) in all pastures (CP 10.2%, NDF 71.2%, ADF 41.3% and ash 14.4%). Final LW of heifers were similar (P> 0.05) (167, 162 and 160 kg for CG, C7 and C28, respectively). A very mild winter favoured exceptional gains which tended to be higher in CG (0.353 …
Influence Of Stocking Rate And Grazing System On Lamb Performance Of Mixed Oat And Ryegrass Swards In Uruguay, Fabio Montossi, R. San Julián, C. Arocena, A. Dighiero
Influence Of Stocking Rate And Grazing System On Lamb Performance Of Mixed Oat And Ryegrass Swards In Uruguay, Fabio Montossi, R. San Julián, C. Arocena, A. Dighiero
IGC Proceedings (1977-2023)
An experiment was conducted at INIA-Tacuarembó Research Station (Uruguay) during 15 June to 4 October 1998, using a Avena Sativa (oat) and Lolium multiflorum (ryegrass) sward to examine the effect of stocking rate (SR; 25 and 35 lambs/ha) and grazing system (GS; strip and 7 days rotational grazing) on sward and lamb performance. SR had a significant effect on lamb performance, being higher the liveweight gain (LWG; 120 vs 98 g/a/d, P < 0.01), hot carcass weight (HCW; 17.7 vs 16.1 kg/a, P < 0.05) and carcass fat cover (GR; 12 vs 8 mm, P < 0.01) of those lambs managed at the lower SR. At the high SR, lambs increased grazing time (405 vs 376 min., P < 0.05). SG did not affect lamb performance, but strip GS reduces lamb grazing time (367 vs 414 min., P < 0.01) and biting rates (22 vs 24 bites/lamb/min., P < 0.01). Post grazing sward height (SH) was highly associated with LWG (LW = - 101,7 + 32.7 SH – 1.49 SH2, R2 = 0.66). This experiment demonstrated that: (a) the productive potential of ryegrass and oat swards to produce high quality …