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Full-Text Articles in Life Sciences

Understanding Students’ Global Interdependence In Science Instruction, Walter S. Smith Dec 2021

Understanding Students’ Global Interdependence In Science Instruction, Walter S. Smith

Journal of Global Education and Research

Multiple American educational organizations such as the National Education Association, Association for Supervision and Curriculum Development, and the Council of Chief State School Officers have advocated for globalizing the K-12 curriculum. The National Science Teaching Association (NSTA) in a position statement on international education and the Next Generation Science Standards have produced goals and standards for internationalizing the science curriculum by addressing topics such as climate change, environment, and disease that cross borders. In contrast to those pronouncements on the curriculum, this article views global science education through an instructional lens that focuses on a students’ global interdependence in science ...


On Inter-Organizational Trust, Control And Risk In Transboundary Fisheries Governance, Gordon M. Hickey, Hunter T. Snyder, Jasper R. Devries, Owen Temby Dec 2021

On Inter-Organizational Trust, Control And Risk In Transboundary Fisheries Governance, Gordon M. Hickey, Hunter T. Snyder, Jasper R. Devries, Owen Temby

Earth, Environmental, and Marine Sciences Faculty Publications and Presentations

Inter-organizational collaboration is often considered essential to transboundary fishery governance, due, in part, to the high levels of task interdependence, the remote and often treacherous conditions, and the limited levels of information available to any policy actor on resource status. In the high seas, Regional Fisheries Management Organizations (RFMOs) are responsible for sustainably managing highly migratory and straddling fish stocks through the implementation of ecosystem-based approaches and ensuring adequate inter-jurisdictional cooperation. A central question facing RFMO governance is therefore how to structure and sustain inter-organizational transboundary collaboration under high uncertainty? This paper presents the case of the North Atlantic Salmon ...


Involving Stakeholders In Crop-Livestock Systems Analysis: Innovation Platforms In Burkina Faso And Niger, West Africa, V. Bado, Andre Van Rooyen, C. Umutoni, A. Whitbread Oct 2021

Involving Stakeholders In Crop-Livestock Systems Analysis: Innovation Platforms In Burkina Faso And Niger, West Africa, V. Bado, Andre Van Rooyen, C. Umutoni, A. Whitbread

International Grassland Congress Proceedings

The development of markets and agricultural productivity need participative research approaches that involve farmers, stakeholders and actors in the value chains of agricultural products and inputs. This study illustrates the use of multi-stakeholder platforms to address critical issues that often curtail effective implementation of development strategies and achievement of objectives. The process used to facilitate stakeholder participation and achieve enhanced understanding of collective actions to achieve objectives is illustrated by case studies in Niger and Burkina Faso. The process that determines the causal relationships among the various problems is also presented; results from the process can be used to determine ...


Simulation Of Alternative Plans For Community Based Goat Breeding Program In Arid, Semi-Arid And Mixed Production Systems In Ethiopia, T. Jembere, Barbara Rischkowsky, T. Dessie, K. Kebede, A. Okeyo Mwai, T. Mirkena, A. Haile Oct 2021

Simulation Of Alternative Plans For Community Based Goat Breeding Program In Arid, Semi-Arid And Mixed Production Systems In Ethiopia, T. Jembere, Barbara Rischkowsky, T. Dessie, K. Kebede, A. Okeyo Mwai, T. Mirkena, A. Haile

International Grassland Congress Proceedings

On station small ruminant researches in Ethiopia were ineffective due to various factors. As alternative, community based breeding program (CBBP) has emerged. In the current CBBPs, sire side selection only (SN1) is practiced. The objective of the present work was to compare SN1 by simulating alternative breeding scenarios for Abergelle (AB), Centeral Highland (CH) and Woyto-Guji (WG) goat breeds in Ethiopia. Three scenarios including selection on dam side (SN2) in addition to SN1, application of genomic selection (SN3) onto SN1 and use of sires from SN1 for mating in additional flocks (SN4) were simulated and compared with SN1 based on ...


Ewe Daily-Weight Gain Grazing Leucaena Leucocephala-Megathyrsus Maximus Cv Mombasa Silvopastoral System And Tropical Native Unimproved Range, L. K. Trejo-Arista, Enrique Cortés-Díaz, P. A. Martínez-Hernández, J. A. Cadena-Meneses Oct 2021

Ewe Daily-Weight Gain Grazing Leucaena Leucocephala-Megathyrsus Maximus Cv Mombasa Silvopastoral System And Tropical Native Unimproved Range, L. K. Trejo-Arista, Enrique Cortés-Díaz, P. A. Martínez-Hernández, J. A. Cadena-Meneses

International Grassland Congress Proceedings

Silvopastoral systems are a viable option to increase livestock productivity, The silvopastoral arrangement of Leucaena leucocephala associated with Megathyrsus maximus CV Mombasa (LMS) is successfully cultivated in tropical environments.. The objective of the study was to determine ewe daily-weight gain grazing LMS and a tropical unimproved native range. Two LMS were tested: high and low leucaena densities, 4700 and 2383 plants/ha, respectively. Grazing was rotational, lasted 150 d (rainy season) at equivalent stocking rate of 59 ewes/ha/150 d. Experimental design was a completely random design with three replications, the experimental unit was a 192 m2 plot ...


What Are The Main Limits To Smallholder Livestock Production In The Tropics – According To Farmers?, A. J. Duncan Oct 2021

What Are The Main Limits To Smallholder Livestock Production In The Tropics – According To Farmers?, A. J. Duncan

International Grassland Congress Proceedings

Livestock production is central to the livelihoods of a billion poor people. Transforming livestock production would have transformative effects on local economies in Sub-Saharan Africa and South Asia. Development efforts in the livestock sector have tended to be top-down without enough feedback loops to understand farmer realities and aspirations. This, despite the Farmer First movement that began in the 1990s. The Feed Assessment Tool (FEAST) was developed as a reaction to top down livestock feed development approaches. FEAST facilitates a structured conversation with farming communities about their livestock production system and how it connects with the overall farming system. FEAST ...


Assessing The Potential Of Diverse Forage Mixtures To Reduce Enteric Ch4 Emissions, C. Loza, S. Verma, S. Wolffram, A. Susenbeth, R. Blank, Friedhelm Taube, Ralf Loges, M. Hasler, C. S. Malisch Oct 2021

Assessing The Potential Of Diverse Forage Mixtures To Reduce Enteric Ch4 Emissions, C. Loza, S. Verma, S. Wolffram, A. Susenbeth, R. Blank, Friedhelm Taube, Ralf Loges, M. Hasler, C. S. Malisch

International Grassland Congress Proceedings

Enteric methane (CH4) is a main source of agriculture-related greenhouse gasses. Conversely, pasture is increasingly demanded by customers due to both perceived and real benefits regarding animal welfare, environmental aspects and product quality. However, if implemented poorly, CH4 emissions can increase, thus contributing to climate change. One promising option to reduce enteric CH4 emissions are plant specialized metabolites (PSM), and particularly tannins. Consequently, we conducted two complementary experiments to determine to what extent enteric CH4 emissions can be reduced, and how this affects milk yields: a) an in vivo experiment with grazing Jersey cows, where CH ...


Management Strategies For Enhanced Beef Production On Suckler Cow Farms, Lief J. Asheim, L. Aass, B. Åby Oct 2021

Management Strategies For Enhanced Beef Production On Suckler Cow Farms, Lief J. Asheim, L. Aass, B. Åby

International Grassland Congress Proceedings

While around two thirds the Norwegian beef is produced on dairy cow farms, meat production on specialized beef farms has increased in recent years. The specialized beef industry consists of suckler cow herds producing calves, and farm operations that purchase weaned calves for fattening. A linear programming (LP) model of suckler cow herds, selling weaned calves at 200 days, was developed to study the influence of certain management strategies on profitability. The data were derived from the records of 31 suckler cow herds from three Norwegian regions. The feed costs for silage (roughly half of the feed), NH3-treated straw, concentrate ...


Progardes® Desmanthus: Good For Beef, Good For The Environment, Christopher Gardiner, F. Mwangi, E. Charmley, T. Hall, B. Suybeng, G. Walker Oct 2021

Progardes® Desmanthus: Good For Beef, Good For The Environment, Christopher Gardiner, F. Mwangi, E. Charmley, T. Hall, B. Suybeng, G. Walker

International Grassland Congress Proceedings

The project “New pastures to increase livestock productivity across the north” is a four year project with a focus on the pasture legume Progardes® Desmanthus. The project explores: methodologies of legume establishment in grass pastures; the antimethanogenic properties of Desmanthus; botanical composition; soil sciences; and pasture nutritive value as related to beef production and meat sciences. Northern Australia has a substantial beef industry based predominantly on poor quality native grass pasture in a semiarid tropical environment with highly variable rainfall. This region also has very extensive areas of Vertosol soils with few, if any, well adapted sown pasture legumes. Progardes ...


Analysis Of Actors And Activities At Dagoretti Livestock Market In Nairobi City, Kenya, Walter Magero Wafula, Oliver Vivian Wasonga Oct 2021

Analysis Of Actors And Activities At Dagoretti Livestock Market In Nairobi City, Kenya, Walter Magero Wafula, Oliver Vivian Wasonga

International Grassland Congress Proceedings

No abstract provided.


Short-Term High-Performance Pastures In Temperate Eastern Australia, Rob Eccles Oct 2021

Short-Term High-Performance Pastures In Temperate Eastern Australia, Rob Eccles

International Grassland Congress Proceedings

In exclusively rain-fed/grass-fed grazing systems, Short Term High-Performance Pastures (HPP) are used in specialised finishing paddocks to produce high-quality feed, enabling livestock to maximise their genetic production potential and meet market carcass specifications at the youngest age possible. This strategy not only achieves premium prices but also requires just 8% of a breeding enterprise’s land to finish animals. Described are the range of species choices and combinations used in different environments of the Australian Eastern high rainfall zone, the reasons these species are used and the options available to meet animal requirements strategically. Instead of a monoculture of ...


Revisiting The Reciprocity Of Human-Ecological Systems: Integrating Extensive Agriculture And Transhumant Pastoralism In The Northern States Of India, Aayushi Malhotra, Sailaja Nandigama Oct 2021

Revisiting The Reciprocity Of Human-Ecological Systems: Integrating Extensive Agriculture And Transhumant Pastoralism In The Northern States Of India, Aayushi Malhotra, Sailaja Nandigama

International Grassland Congress Proceedings

India’s primary sector is characterised by the age-old practices of agriculture and pastoralism that have traditionally remained symbiotic in nature. However, these relationships are dwindling in the light of uneven development focus and increasing climatic hazards. The current mode of local development practices is directly affecting the overall environment while simultaneously increasing the vulnerability of the resource-dependent communities. Pastoralism, along with the agricultural enterprise that is expanding with the support of irrigation network, is recognised as a major community-based occupation in the northern region of India. Despite that, pastoralism remains highly neglected in policy circles, whereas agriculture persists to ...


Restoring Value To Grassland Initiative: To Maintain The Environmental And Economic Value Of Grasslands And To Promote Their Social And Cultural Functions, Liz Wedderburn, Alexandre Ickowicz, Rogerio M. Mauricio, M. Quiroga Mendiola, M. Blanchard, Le Thi Thanh Huyen, B. Hubert, J. Lasseur, V. Blanfort, J.-P. Müller Oct 2021

Restoring Value To Grassland Initiative: To Maintain The Environmental And Economic Value Of Grasslands And To Promote Their Social And Cultural Functions, Liz Wedderburn, Alexandre Ickowicz, Rogerio M. Mauricio, M. Quiroga Mendiola, M. Blanchard, Le Thi Thanh Huyen, B. Hubert, J. Lasseur, V. Blanfort, J.-P. Müller

International Grassland Congress Proceedings

The Global Agenda for Sustainable Livestock (GASL), a multi-stakeholder partnership started in 2013 includes nine action networks (ANs). The networks are the working engine of GASL and are tasked with implementing activities, reports, providing evidence, guidelines and information on good practices demonstrated by the livestock sector. This paper outlines the activities of the network AN2 “Restoring Value to Grassland”, the purpose of which is to “maintain, restore and enhance environmental and economic value of grasslands, while promoting their social and cultural functions globally”. Since 2014, AN2 workshops have been held annually with scientists and stakeholders from rangeland/grassland biomes in ...


A Systematic Review Of Ecological And Production Outcomes Under Rest-Grazing Systems, S. E. Mcdonald, R. Lawrence, R. Rader Oct 2021

A Systematic Review Of Ecological And Production Outcomes Under Rest-Grazing Systems, S. E. Mcdonald, R. Lawrence, R. Rader

International Grassland Congress Proceedings

With increasing pressure on grazing lands throughout the world, there is a growing need to balance sustainable management of livestock to meet food production and environmental impacts. Grazing management practices that incorporate periods of planned rest between grazing events (RG) may achieve both ecological and production goals simultaneously. We conducted a systematic review of global literature that compared ecological and production outcomes of RG systems with either continuously grazed (CG) or ungrazed (UG) areas. In addition, we evaluated the extent to which ecological and livestock production outcomes have been assessed simultaneously in these studies and identified future research needs. A ...


Use Of Remote Sensing To Guide The Assessment Of Temperate Grassland Degradation In The Territory, M. Martinez Oct 2021

Use Of Remote Sensing To Guide The Assessment Of Temperate Grassland Degradation In The Territory, M. Martinez

International Grassland Congress Proceedings

The methodology Participatory Rangeland and Grassland Assessment (PRAGA), in its baseline phase, more specifically in stage 4, suggests remote sensing to assess at landscape scale. In order to determine the sites to be evaluated, grassland pixels of the Modis sensor were taken into account. Within it, three types of soils were differentiated: superficial, medium and deep, according to the previous existing cartography (2).

Within each soil type, pixels with significant trends (ἀ < 0.05), positive and negative (bright and hot), for the period 2000 -2017, were searched for both, IPSE and RESTREND. Therefore, 6 pixels of the Modis sensor were selected for each landscape.

From the field evaluation it appears that the greatest difference between the bright and hot trends was the height of the forage, and that both are pasture conditions ...


On The Move – Do Domestic And Wild Ungulate Species Distributions Overlap In The Mongolian Gobi?, L. M. Michler, P. Kaczensky, O. Ganbaatar, A. C. Treydte Oct 2021

On The Move – Do Domestic And Wild Ungulate Species Distributions Overlap In The Mongolian Gobi?, L. M. Michler, P. Kaczensky, O. Ganbaatar, A. C. Treydte

International Grassland Congress Proceedings

In the Great Gobi B Strictly Protected Area (Great Gobi B), wild and domestic ungulates seasonally share the forage of the semi-desert and desert habitat. Around 130 herder families are grazing their livestock, mainly goats and sheep, in the protected area in winter. Wild ungulates of global significance in Great Gobi B include the reintroduced Przewalski’s horse (Equus ferus przewalskii),which had previously been extinct in the wild. To determine potential habitat overlaps between Przewalski’s horses and livestock, we mapped the movements of 19 livestock herds monitored via GPS collars and ranger observations of Przewalski’s horse herds ...


Conservation And Utilization Of Grassland Resources For Sustainable Livestock Production In Different Agro-Climatic Zones Of India, Om Singh Oct 2021

Conservation And Utilization Of Grassland Resources For Sustainable Livestock Production In Different Agro-Climatic Zones Of India, Om Singh

International Grassland Congress Proceedings

The competent authority has approved the modifications in the Centrally Sponsored Fodder and Feed Development Scheme (CSFFDS), within the budget provision for the year 2012-13. The modifications are (i) Including a new component of ‘Establishment of Fodder Banks’ under the CSFFDS within the budget provision, for the financial year 2012-13 (i) The Central share for the component of Establishment of Fodder Block Making Units under the SDFFDS has been increased from 50% to 75% for the financial year 2012-13 for Cooperatives or Milk unions or Federations, and for State Government to facilitate harvesting and storage of surplus fodder in areas ...


The Importance Of Campos Ecosystem As A World Food Producer And As A Provider Of Ecosystem Services, Walter Ayala, D. Bendersky, J. Paruelo, P. Rovira Oct 2021

The Importance Of Campos Ecosystem As A World Food Producer And As A Provider Of Ecosystem Services, Walter Ayala, D. Bendersky, J. Paruelo, P. Rovira

International Grassland Congress Proceedings

The Campos ecosystem represent one of the largest grassland areas on the world, with great biodiversity in plants and animals. It contributes to improve world food security, based on ruminant livestock production, providing animal protein to feed more than 160.000.000 people. The research agenda for Campos ecosystem demands attention on the productivity and increasing variability phenomena, overgrazing, biodiversity standards and water contamination among other factors. It provides services including genetic resources, carbon storage, control of soil erosion, nutrient recycling, water production with low nutrient concentration and pest control. Overall, there is available technology to improve long-term livestock productivity ...


Understanding The Effects Of A Tannin Extract On Forage Protein Digestion In The Rumen And Abomasum Using A Dynamic Artificial Digestive System Coupled To A Digestomic Approach, T. Sayd, C. Chambon, A. Torrent, S. Blinet, L. Theron, V. Niderkorn Oct 2021

Understanding The Effects Of A Tannin Extract On Forage Protein Digestion In The Rumen And Abomasum Using A Dynamic Artificial Digestive System Coupled To A Digestomic Approach, T. Sayd, C. Chambon, A. Torrent, S. Blinet, L. Theron, V. Niderkorn

International Grassland Congress Proceedings

Improving the use efficiency of dietary protein in ruminants is a major challenge to decrease feed supplementation and significantly decrease nitrogen (N) losses to the environment. The aim of this study was to characterize the effects of tannins on protein digestion in the rumen and in conditions simulating the abomasum, using a dynamic in vitro digestive system coupled to a digestomic approach. Three ruminally-cannulated sheep fed with alfalfa hay were infused daily with a solution of tannins, while three other sheep were infused with water (control). Standardized ruminal fluid was introduced into the digester, which simulated the transit of digesta ...


The Hunt For The “Holy Grail”: Condensed Tannins In Perennial Forage Legumes, John R. Caradus, Christine R. Voisey, G. R. Cousin, D. R. Woodfield, A. Blanc, M. B. Roldan Oct 2021

The Hunt For The “Holy Grail”: Condensed Tannins In Perennial Forage Legumes, John R. Caradus, Christine R. Voisey, G. R. Cousin, D. R. Woodfield, A. Blanc, M. B. Roldan

International Grassland Congress Proceedings

A recent advance using molecular biology has identified a transcription factor or master switch that can ‘turn on’ the condensed tannin pathway present in white clover, and with the appropriate promoters allows biologically significant levels of condensed tannin expression in leaf tissue. In vitro tests have demonstrated that the condensed tannins produced in white clover leaves can bind protein at a pH 6.5, as found in the rumen, and then release them at pH 2.5, the pH in the abomasum, before entering the small intestine for amino acid absorption. Additional tests have demonstrated that these condensed tannins can ...


Identifying Forage Quality Eastern Gamagrass [Tripsacum Dactyloides (L.) L.] Genotypes From A Wild Regional Collection, D. M. Hollowell, Jesse Ira Morrison, B. S. Baldwin Oct 2021

Identifying Forage Quality Eastern Gamagrass [Tripsacum Dactyloides (L.) L.] Genotypes From A Wild Regional Collection, D. M. Hollowell, Jesse Ira Morrison, B. S. Baldwin

International Grassland Congress Proceedings

Eastern gamagrass is a perennial warm-season grass native to North America and endemic to the eastern United States. The species is highly valuable as both a forage and hay crop. In 2012, 171 wild-type eastern gamagrass accessions were collected from the southeast, mid-Atlantic and Atlantic coast regions. Each accession was relocated to Starkville, MS (33.423585, -88.792394) and established in a long-term nursery. Accessions were analyzed for ploidy level and during 2013-2014 were further evaluated for desirable forage characteristics including: cold tolerance, delayed maturity, rust resistance, and digestibility. Fourteen elite individuals were identified from the original collection and were ...


Irrigation Management Strategies For Fodder Beet (Beta Vulgaris L.) Crops, Edith N. Khaembah, John M. De Ruiter, E. Chakwizira, S. Maley, M. J. George Oct 2021

Irrigation Management Strategies For Fodder Beet (Beta Vulgaris L.) Crops, Edith N. Khaembah, John M. De Ruiter, E. Chakwizira, S. Maley, M. J. George

International Grassland Congress Proceedings

The production of fodder beet (Beta vulgaris L.) in New Zealand is concentrated in the South Island, and often requires irrigation to achieve high yields. Development of efficient irrigation management strategies requires information on the effect of timing and rate of irrigation on crop growth. A field study was conducted on a moderately deep soil at Chertsey, Canterbury, New Zealand, to evaluate crop growth responses to five irrigation managements: Rain-fed (control), weekly replacement of full evapotranspiration (FullET-weekly), and 50% of evapotranspiration replaced weekly (HalfET-weekly), fortnightly (HalfET-2weekly) or 3-weekly (HalfET-3weekly). Irrigation to replace ET was adjusted to account for rainfall received ...


Maintain Forage Yields In Long- And Short-Term Grasslands In Norway, I. Sturite, T. Maeland, M. Höglind Oct 2021

Maintain Forage Yields In Long- And Short-Term Grasslands In Norway, I. Sturite, T. Maeland, M. Höglind

International Grassland Congress Proceedings

Various reasons have been invoked explaining the low renovation activity in Norwegian grassland farming: swards are often located in marginal areas, ploughing and reseeding gives low or no yield in the renovation year, and it may be unprofitable to establish a new sward. The establishment of new leys can also prove difficult in seasons with unfavourable weather conditions. Thus, farmers prefer long-term or permanent swards as opposed to ploughed and reseeded swards. The hypotheses of this study is that under equal management conditions, permanent and temporary swards (leys) that are reseeded frequently are equally productive. We present results from an ...


Sowing Rate Effects On Biomass Production Of A Forage Oat In The Qinghai-Tibetan Plateau, C. T. Liu, H. B. Zhang, J. Q. Deng, Yuying Shen Oct 2021

Sowing Rate Effects On Biomass Production Of A Forage Oat In The Qinghai-Tibetan Plateau, C. T. Liu, H. B. Zhang, J. Q. Deng, Yuying Shen

International Grassland Congress Proceedings

Oat (Avena sativa L.) has been a quality forage for the livestock husbandry in the Qinghai-Tibetan Plateau. But farmers tend to use high sowing rates to avoid forage production risks, which does not always give the optimum yield. An field experiment was carried out to explore the response of dry matter production of forage oat Jiayan No.2 to sowing rates in three locations of the Qinghai-Tibetan Plateau: Tianzhu county (TZ), Haiyan county (HB) and Hongyuan county (HY).The five sowing rates were set as 30 , 60 , 90 , 150 and 240 kg·ha-1. Sowing rates had a significant effect ...


Regeneration Of Old Ungrazed Old Man Saltbush (Atriplex Nummularia) Stands In South-West Australia, S. J. Bennett, S. G. Low, D. Collins, V. Crouch Oct 2021

Regeneration Of Old Ungrazed Old Man Saltbush (Atriplex Nummularia) Stands In South-West Australia, S. J. Bennett, S. G. Low, D. Collins, V. Crouch

International Grassland Congress Proceedings

Many old man saltbush (Atriplex nummularia) stands were sown in the grainbelt of Western Australia for soil regeneration and salinity management up to 25 years ago, but have not been effectively grazed subsequently, such that the main feed available for sheep is above grazing height. The aim of the study was therefore to see if it was possible to return the old man saltbush stands to a productive grazing stand.

Two sites were chosen that had been sown up to 25 years previously in Goomalling and Corrigin, in the south-west of Western Australia. The sites were split into four treatments ...


Shelf Life Potential And Microbial Load Of Varying Mixtures Of Grass-Legume Pellets: A Dry Season Feed, O. A. Aderinola, S. T. Oyewole, D. O. Okunlola Oct 2021

Shelf Life Potential And Microbial Load Of Varying Mixtures Of Grass-Legume Pellets: A Dry Season Feed, O. A. Aderinola, S. T. Oyewole, D. O. Okunlola

International Grassland Congress Proceedings

The effects of storage duration (0, 6 and 12 weeks), storage medium (plastic container, polythene bag and jute sack) and varying mixture of grass-legume (60% Panicum maximum (6Pm); 30% Panicum maximum + 30% Lablab purpureus (3Pm3Lp); 40% Panicum maximum + 20% Lablab purpureus (4Pm2Lp); 40% Panicum maximum + 20% Stylosanthes hamata (4Pm2Sh) and 30% Panicum maximum + 30% Stylosanthes hamata (3Pm3Sh)) on shelf life and microbial load of grass-legume pellets were examined in the derived savanna zone of Nigeria (Latitude 80N, Longitude 40E) using a 3 x 3 x 5 factorial arrangement using completely randomized design with Microbial concentrations were ...


Grass-Legume Mixtures For Diversified And Profitable Forage Production, M. A. Islam, D. Ashilenje Oct 2021

Grass-Legume Mixtures For Diversified And Profitable Forage Production, M. A. Islam, D. Ashilenje

International Grassland Congress Proceedings

Grass-legume mixtures can improve forage yields, nutritive value, and net economic benefits. A replicated experiment was conducted from 2013-2017 at the University of Wyoming Sheridan Research and Extension Center to determine forage yield, nutritive value, and gross margin for meadow bromegrass (Bromus riparius Rehm.), alfalfa (Medicago sativa L.), sainfoin (Onobrychis viciifolia Scop.), and birdsfoot trefoil (Lotus corniculatus L.) mixtures and monocultures. Treatments included 50-50% and 70-30% mixtures of meadow bromegrass with each legume and 50-25-25% mixture of meadow bromegrass with two legumes and 50-16.7-16.7-16.7% mixture of meadow bromegrass, alfalfa, sainfoin, and birdsfoot trefoil. Grass monocultures received 0 ...


Closing Feed Gaps By Winter Forage Production In Limpopo: What Is The Potential?, S. A. Lamega, M. Komainda, M. P. Hoffmann, J. J. Odhiambo, K. K. Ayisi, Johannes Isselstein Oct 2021

Closing Feed Gaps By Winter Forage Production In Limpopo: What Is The Potential?, S. A. Lamega, M. Komainda, M. P. Hoffmann, J. J. Odhiambo, K. K. Ayisi, Johannes Isselstein

International Grassland Congress Proceedings

In southern Africa, livestock productivity in mixed crop-livestock systems is constrained by forage supply towards the end of the dry period. Opportunities to improve forage availability to close the temporal feed gap counteracting negative effects on production as well as on environment need to be explored. A promising option might be the planting of cover crops (CC) during the winter period. Hence, a field experiment was conducted in the Limpopo province (South Africa) during the autumn-winter period of 2019 at two sites (Syferkuil, Thohoyandu) with contrasting climatic conditions and soil type. We selected multi-functional C3 species – winter rye (Secale cereal ...


"Estimation Of The Primary Net Production Above Ground Through Remote Sensing In A Pastoral System Of The Colombian Altillanura.", R. A. Díaz, M. Álvarez, O. Pérez, J. Bernal, M. Arango Oct 2021

"Estimation Of The Primary Net Production Above Ground Through Remote Sensing In A Pastoral System Of The Colombian Altillanura.", R. A. Díaz, M. Álvarez, O. Pérez, J. Bernal, M. Arango

International Grassland Congress Proceedings

The primary net production above ground (ANPP) represents the main forage resource that supports the bovine production systems and its valuation is essential to help in the decision making on the management of the pastures. The ANPP has been estimated by periodic biomass courtesy, but with the use of the remote sensor integrated into the efficiency model formulated by Monteih (1972), it has been possible to estimate this biophysical parameter more efficiently at different scales and at low cost. The objective of this study was to estimate the PPNA based on a model of efficiency in the use of light ...


The Morphological, Crude Protein And In-Vitro Dry Matter Degradability Characterisation Of Nine Native Grass Species For Veld Restoration In Semi-Arid Environment, N. H. Msiza, K. E. Ravhuhali, H. K. Mokoboki, Sydney Mavengahama Oct 2021

The Morphological, Crude Protein And In-Vitro Dry Matter Degradability Characterisation Of Nine Native Grass Species For Veld Restoration In Semi-Arid Environment, N. H. Msiza, K. E. Ravhuhali, H. K. Mokoboki, Sydney Mavengahama

International Grassland Congress Proceedings

Pasture production is dependent on results from favourable conditions that allow for stimulation of tillers and absence thereof does not promote the development of tillers. The study sought to investigate the comparative characterisation of the morphology, crude protein and in-vitro dry matter degradability (DMD) of nine native grass species (Anthephora pubescens, Cenchrus ciliaris, Chloris gayana, Dactylis glomerata, Digitaria eriantha, Eragrostis curvula, Festuca arundinacea, Panicum maximum & Themeda triandra), subjected under controlled conditions. Plants were assessed for germination percentage, chlorophyll, number of leaves and tillers, crude protein and in-vitro dry matter degradability (DMD). Data on these parameters was analysed using one-way analysis ...