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- Grazing (259)
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- Intake (91)
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- Grazing management (66)
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Comparison Of Two Low-Input Cow/Calf Production Systems On Temperate Grassland, W. B. Bryan, Mata Padrino, E. Felton, E. C. Prigge, V. W. Temu, O. J. Gekara
Comparison Of Two Low-Input Cow/Calf Production Systems On Temperate Grassland, W. B. Bryan, Mata Padrino, E. Felton, E. C. Prigge, V. W. Temu, O. J. Gekara
IGC Proceedings (1977-2023)
Two systems of grass farming were compared in an eight-year experiment in West Virginia, USA. The grassland consisted primarily of cocksfoot (Dactylis glomerara L.), Kentucky bluegrass (Poa pratensis L.), tall fescue (Festuca arundinacea Schreb.), and red (Trifolium pretense L.) and white clover (T. repens L.). The objective was to compare two systems of beef cow calf production. The experiment was a randomized complete block with two replicated treatments. The grassland of treatment 1 (system 1) was overseeded with legumes, grazing started 1 wk earlier and continued 1 wk later than treatment 2 (system 2) and …
Grazing Cover Crops In The Eastern Us: Performance Of Sheep, Goats, And Cattle Grazing Brassica Cover Crops, K. Cassida
Grazing Cover Crops In The Eastern Us: Performance Of Sheep, Goats, And Cattle Grazing Brassica Cover Crops, K. Cassida
IGC Proceedings (1977-2023)
Grazing annual forage crops has attained new interest with the increase in use of cover crops. Grazing annual forages grown as cover crops not only allows livestock producers to extend the grazing season but also gives row crop growers a way to recoup the cost of planting cover crops through grazing leases. Species in the Brassicaceae family (turnip, rape, kale, radish, and hybrids) have wide adaptability across the eastern US, excellent forage yield potential, and extremely high nutritional value. Brassicas are sometimes described as “high-moisture concentrates.” Their low effective fiber content drives the common recommendation to grow them with annual …
Extended Season Grazing On Two Ranches At Opposite Ends Of The Americas, Brett Chedzoy
Extended Season Grazing On Two Ranches At Opposite Ends Of The Americas, Brett Chedzoy
IGC Proceedings (1977-2023)
Dormant season feeding of stored forages accounts for the majority of beef cattle production expenses across the world (Geiser and Boetel 2017). Additionally, most beef cattle production and particularly cow-calf operations are relegated to less accessible and productive landscapes, which reduces access to and increases costs for stored feeds. A comparison of two cow-calf operations owned and operated by the same family in the Province of Cordoba, Argentina and State of New York, USA are offered as case studies of creative solutions to these challenges. In Argentina, appropriate stocking for year-long grazing is the key to surviving the winter dormant …
The Partial Replacement Of Perennial Ryegrass Silage With Ensiled Biorefined Perennial Ryegrass Press Cake, And Its Impact On Productivity Of Late Lactation Dairy Cows, H. Costigan, B. Lahart, M. Kennedy, T. Rumley, L. Shalloo
The Partial Replacement Of Perennial Ryegrass Silage With Ensiled Biorefined Perennial Ryegrass Press Cake, And Its Impact On Productivity Of Late Lactation Dairy Cows, H. Costigan, B. Lahart, M. Kennedy, T. Rumley, L. Shalloo
IGC Proceedings (1977-2023)
Although necessary to maintain milk production in late lactation when grass is scarce, dependency on imported concentrate has negative environmental credentials; diversifying native feeds i.e., perennial ryegrass, using biorefinery, to produce high quality by-products may be a solution (Sanders et al., 2020). To validate these suggestions, a study was undertaken on dairy cows during the winter period; 60% of a perennial ryegrass silage diet was replaced with perennial ryegrass (PRG) press cake in treatment cows (GSPC; n=20), while a perennial ryegrass silage diet was offered to control cows (GS; n=20). Cows substituted with press cake produced 9.1 and 10.5 % …
Grazing And Animal Welfare Of Dairy Cows In Europe, What Do We Know?, A. Van Den Pol-Van Dasselaar, D. Hennessy, J. Isselstein
Grazing And Animal Welfare Of Dairy Cows In Europe, What Do We Know?, A. Van Den Pol-Van Dasselaar, D. Hennessy, J. Isselstein
IGC Proceedings (1977-2023)
Grazing systems are important components of the landscape in almost all European countries. Grazing is inherently close to the nature of herbivores, but no longer applied everywhere in Europe. This paper discusses the extent of dairy cow grazing in Europe and the effect of grazing on animal welfare. The study builds on results of surveys from the European Grassland Federation (EGF) Working Group “Grazing” (WGG) in the period 2010–2022 and a focus group meeting in 2022. Data on the extent of grazing of dairy cows in Europe are provided. Europe can be divided into six distinctive regions with respect to …
Isoflavones In Legumes As Functional Forages And Feeds In Ruminant Grazing Systems, B. E. Davis, Michael D. Flythe, T. A. Hamilton, D. G. Ely, L. H. Anderson, J. R. Weinert-Nelson
Isoflavones In Legumes As Functional Forages And Feeds In Ruminant Grazing Systems, B. E. Davis, Michael D. Flythe, T. A. Hamilton, D. G. Ely, L. H. Anderson, J. R. Weinert-Nelson
IGC Proceedings (1977-2023)
Legumes are often utilized in livestock grazing systems to improve diet quality, diversity, and consequently animal performance. In addition to their nutritional utility, legumes contain phytoestrogenic isoflavones that have selective antimicrobial activity in the rumen and once absorbed can cause arterial vasodilation. These added bioactive functions of isoflavones suggest that legumes could be strategically utilized in grazing systems as functional forages to improve ruminant performance and health. The objective of this presentation will be to discuss past and current research on the application of isoflavones via legumes as an antimicrobial for growth promotion and as a mitigation strategy for fescue …
Cool-Season Annual Legumes And Forbs For Grazing And Cover Crop Systems, S. L. Dillard
Cool-Season Annual Legumes And Forbs For Grazing And Cover Crop Systems, S. L. Dillard
IGC Proceedings (1977-2023)
Annual forage legumes and non-leguminous forbs can be used to interseed into perennial forage grasses or as a short-term grazing option between row crop rotations. Diversification of cropping systems by increasing number or type of cover crops in crop rotation plays an important role in improving land-use efficiency and in promoting sustainable agriculture. Legumes and other broadleaf forages provide increased forage digestibility and crude protein as a result of their greater leaf-to-stem ratio. In the Southeast U.S, few novel cultivars have been released in the last 20 years, resulting in the reliance on only a few forage cultivars and species. …
Animal And Forage Performance Of Integrated Crop-Livestock Systems, S. L. Dillard
Animal And Forage Performance Of Integrated Crop-Livestock Systems, S. L. Dillard
IGC Proceedings (1977-2023)
Grazing of cool-season cover crops has been shown to be a viable tool for extending the grazing season while mitigating environmental risks associated with row-crop farming systems. Grazing cover crops is not novel, but most recent information available on this practice focuses on soil health as opposed to forage production and animal performance. Research has shown that forage quality of cool-season annual cover crops is sufficient to maintain an average daily gain of at least 1 kg/d and as high as 1.5 kg/d. Forage species selection plays an important role in the success of an integrated crop-livestock system. Grasses typically …
Preliminary Results: Complementary C4:C3 Grazing Systems, M. Berry, P. Keyser, S. Jagadamma, H. Nauman, K. Coffey, C. Nieman, P. Owens, A. Ashworth, E. Bisangwa
Preliminary Results: Complementary C4:C3 Grazing Systems, M. Berry, P. Keyser, S. Jagadamma, H. Nauman, K. Coffey, C. Nieman, P. Owens, A. Ashworth, E. Bisangwa
IGC Proceedings (1977-2023)
Native warm-season grasses (NWSG) can produce high quality forage and high rates of gain for beef cattle. However, little data is available on how NWSG affect the productivity of cow-calf operations on a farm scale. Therefore, we implemented an experiment at three sites, Booneville, AR, Linneus, MO and Louisville, TN, with cow-calf pairs (mature cows over ≥ 3 years old, spring calving). We evaluated two forage systems that mix either a drought or drought/flood tolerant native C4 species [big bluestem (BB) blend or eastern gamagrass (EG)] with a cool-season perennial, tall fescue (TF), and compared them to the most …
Fodder Scenario And Hortipastoral Opportunities To Enhance Fodder Production In India, Nagaratna Biradar, C. Lakshmi Devi, Vinod Kumar, Narendra S. Kulkarni, G. K. Kumar Anil, S. S. Guledagudda, A. Bheemappa
Fodder Scenario And Hortipastoral Opportunities To Enhance Fodder Production In India, Nagaratna Biradar, C. Lakshmi Devi, Vinod Kumar, Narendra S. Kulkarni, G. K. Kumar Anil, S. S. Guledagudda, A. Bheemappa
IGC Proceedings (1977-2023)
Food grain production and livestock production are closely related in India as crop-residue forms the major source of fodder for livestock. It’s thus assumed that increase in food grain production has positive effect on availability of dry matter to the livestock. Using land use classification, crop production (2015 to 2020) and livestock census (2019) data, dry matter (DM) availability for livestock for 28 states of India was estimated. Hortipastoral opportunities by estimating area available under orchards in southern India were done to assess the possibility of introducing fodder crops in orchards. Some of the fodder crops were introduced in orchards …
Productivity And Variability Of Pastures And Cover Crops In Lowland Rice-Pasture Rotations In Uruguay, Walter Ayala, J. Terra
Productivity And Variability Of Pastures And Cover Crops In Lowland Rice-Pasture Rotations In Uruguay, Walter Ayala, J. Terra
IGC Proceedings (1977-2023)
No abstract provided.
Designing Dual-Purpose Management Strategies For Sheep Production And Pollinators In Dryland Pastures, Mia Caudillo, Andony Melathopoulos, Mary Smallman, Sarah A. Kinkaid, David E. Prado-Tarango, Serkan Ates
Designing Dual-Purpose Management Strategies For Sheep Production And Pollinators In Dryland Pastures, Mia Caudillo, Andony Melathopoulos, Mary Smallman, Sarah A. Kinkaid, David E. Prado-Tarango, Serkan Ates
IGC Proceedings (1977-2023)
Development of novel grazing management practicesfor both livestock production and pollinator health is becoming increasingly crucial in pasture-based farming systems. The effect of pasture type and spring closing dates on lamb liveweight gain, pasture production, botanical composition, bloom density and bee visitation was monitored over 2 years at the Oregon State University in Corvallis. Total annual dry matter yield (DMY) of diverse pastures in 2020/2021 was 8.8 t DM ha-1 and this was greater (P-1) and legume pastures (6.6 t DM ha-1). In successive years, lambs grew faster in legume pastures (287, 215 g per head d …
Tillering Of ‘Marandu’ Brachiaria Under Different Nitrogen Rates In The Brazilian Savannah, A. B. O. Assis, A. L. Bocchi, T. C. Pedrosa, A. O. Matos, A. P. B. Soares
Tillering Of ‘Marandu’ Brachiaria Under Different Nitrogen Rates In The Brazilian Savannah, A. B. O. Assis, A. L. Bocchi, T. C. Pedrosa, A. O. Matos, A. P. B. Soares
IGC Proceedings (1977-2023)
The tiller is the basic unit of grass growth and tiller density determines the horizontal ground cover, leaves production and pastures perennially. The objective in this study was to quantify the number of aerial and basal tillers and basal:aerial tillers ratio in Urochloa brizantha cv. Marandu, established in Brazilian savannah, submitted to nitrogen doses (0, 50, 100 and 150 kg N/ha). The experiment was carried out in the Forage and Pasture Sector of Jataí Federal University (UFJ) and after soil correction and fertilization, plots were established with Marandu palisade grass in a randomized block design, with four replications and four …
Effect Of Soil Source And Variety On The Heavy Metal Contents Of Guinea Grass, C. C. Anotaenwere, P. O. Bankole, P. A. Dele, Alaba O. Jolaosho
Effect Of Soil Source And Variety On The Heavy Metal Contents Of Guinea Grass, C. C. Anotaenwere, P. O. Bankole, P. A. Dele, Alaba O. Jolaosho
IGC Proceedings (1977-2023)
The aim of this study was to evaluate the heavy metal content in soils and grasses planted on selected contaminated soils. The study was a 3 x 2 factorial experiment in a completely randomized design comprising of two factors which are: 3 soil sources (i.e., industrial site, dump site and Fadama (a lowland around a river/stream) which was used as the control) and 2 varieties of Megathyrsus maximus (var. Local and Ntchisi) replicated four times. Soils were collected from the three sites and planting was done in a greenhouse. Soil samples were collected before and after planting. Samples of the …
Effect Of Nitrogen Source And Age At Harvest On The In Vitro Digestibility Of Oba Super Ii Maize Fodder, C. C. Anotaenwere, P. A. Dele, F. E. Salawu, B. T. Akinyemi, O. A. Okukenu, Alaba O. Jolaosho
Effect Of Nitrogen Source And Age At Harvest On The In Vitro Digestibility Of Oba Super Ii Maize Fodder, C. C. Anotaenwere, P. A. Dele, F. E. Salawu, B. T. Akinyemi, O. A. Okukenu, Alaba O. Jolaosho
IGC Proceedings (1977-2023)
This experiment was carried out in the Pasture Section of the Directorate of University farms and the laboratory of Department of Pasture and Range Management, Federal University of Agriculture, Abeokuta, Nigeria, to evaluate the effect of nitrogen source (Swine manure, N.P.K. 15:15:15 as well as the control) and age at harvest on the in vitro gas production and digestibility of Oba Super II maize fodder. The experiment was in a split plot design. The nitrogen source was applied at the rate of 120 kgN/ha two weeks after planting. Maize was harvested at 8, 10 and 12 weeks after planting, oven …
Harvest Time Determine Biomass And Nutritive Value Of Forage Soybean In The Northwestern Loess Plateau Of China, An Dong, Jean Marie Vianney Nsigayehe, Y. Y. Shen
Harvest Time Determine Biomass And Nutritive Value Of Forage Soybean In The Northwestern Loess Plateau Of China, An Dong, Jean Marie Vianney Nsigayehe, Y. Y. Shen
IGC Proceedings (1977-2023)
Soybean is a critical legume crop, which can be used as high protein forage in a crop-forage rotation system to supplement forage and increase system productivity. According to the actual production demand, selecting a suitable harvest time and the best feeding variety of soybean can provide a theoretical basis for applying forage soybean in a rotation system. In this study, four forage soybean varieties were selected in the Loess Plateau of northwest China. They were harvested on three dates suitable for local rotation conditions, and their biomass and nutritive value were evaluated. At the early harvest (20 August), the nutritive …
Phyllochron And Growth Dynamic Of Lolium Perenne L. And Bromus Valdivianus Phil. As Affected By Soil Ph, Phosphorus And Nitrogen Restriction, Oscar A. Balocchi, M. F. Alonso, I. Calvache
Phyllochron And Growth Dynamic Of Lolium Perenne L. And Bromus Valdivianus Phil. As Affected By Soil Ph, Phosphorus And Nitrogen Restriction, Oscar A. Balocchi, M. F. Alonso, I. Calvache
IGC Proceedings (1977-2023)
Permanent grasslands are the main food for livestock production systems in Southern Chile. Therefore, it is essential to develop management tools that optimize the use of pastures. Among these tools, the phyllochron could be a better method to control grazing frequency. The aim of this study was to determine the effect of three levels of soil pH, phosphorus (P) and nitrogen (N) on the phyllochron and growth dynamic of Lolium perenne and Bromus valdivianus. Nine monophytic mini-swards of each species were established in 125 L containers for three different pH, P and N levels. For one year we measured: …
Mass Production And Morphology Of Marandu Brachiaria Under Different Nitrogen Rates In The Brazilian Savannah, V. L. Banys, A. O. Matos, A. L. Bocchi, I. I. Silva, L. V. D. Ribeiro
Mass Production And Morphology Of Marandu Brachiaria Under Different Nitrogen Rates In The Brazilian Savannah, V. L. Banys, A. O. Matos, A. L. Bocchi, I. I. Silva, L. V. D. Ribeiro
IGC Proceedings (1977-2023)
Nitrogen is the nutrient that most contributes to increase forage productivity and quality. The objective was to evaluate Marandu brachiaria submitted to nitrogen doses in the Brazilian savannah through the total and green mass production, leaf:stem and brachiaria:weed ratio. Plots were established in a randomized block design, with four replications and four N doses 0, 50, 100 and 150 kg N/ha). After the uniformization cut, the data collect cycles occurred when the canopy reached 30 cm average height. Samples were taken until 15 cm from the ground in an area of 0.25 m2. Fractions were separated according botanical …
Grazing Management For Alfalfa Persistence And Productivity In Warm-Climate Regions, D. Basigalup
Grazing Management For Alfalfa Persistence And Productivity In Warm-Climate Regions, D. Basigalup
IGC Proceedings (1977-2023)
Alfalfa is the most important cultivated forage crop in Argentina, where about 3 million hectares are grown. Even though the use of direct grazing is coming down during the last 15 years, it is still important for both beef and dairy production. Alfalfa grazing can play an important role in reducing operative costs and decreasing quality loss due to forage conservation (hay or silage). In this paper, the main concepts necessary to implement adequate and practical rotational grazing systems are briefly discussed. Particular attention is given to issues such as grazing frequency, grazing period, pasture use efficiency, and alfalfa quality …
Genetic Variability Of Lucerne Landraces From Central Italy Detected By Rapd Markers, L Russi, G Barcaccia, M Falcinelli, F Veronesi
Genetic Variability Of Lucerne Landraces From Central Italy Detected By Rapd Markers, L Russi, G Barcaccia, M Falcinelli, F Veronesi
IGC Proceedings (1977-2023)
With the aim to characterize six lucerne landraces (Medicago sativa L.), representing a sample of a collection from central Italy, sixty individuals per landrace were evaluated by screening for RAPD markers with three lucerne-specific primers. Twenty-one amplification products were scored as present or absent across all plants. The dendrogram from mean genetic similarity estimates displayed Casalina alone and the other landraces clustered into one distinct group, showing a single branch point with more than 73% of genetic similarity. The discriminant analysis grouped the landraces in a similar manner. The first function maximally separated the group Grosseto, Gubbio and C. …
Amphicarpic Legumes For Tropical Pasture Persistence, R Schultze-Kraft, A Schmidt, H Hohn
Amphicarpic Legumes For Tropical Pasture Persistence, R Schultze-Kraft, A Schmidt, H Hohn
IGC Proceedings (1977-2023)
Amphicarpy, by which a plant produces underground seeds in addition to aerial fruits, is found in many plant families and in species of at least 15 legume genera. First studies on the tropical Centrosema rotundifolium and subtropical Macroptilium panduratum revealed for both species, besides their stoloniferous growth habit, two important mechanisms for survival under unfavorable conditions: (1) Underground meristems and reserve organs, and (2) regeneration from a soil seed reserve based on underground, aerial-flowering independent, seed production. Underground seed production was for both species particularly high on very sandy soils, but amphicarpy enables the plants to exhibit a plasticity response …
The Business Case For Healthy Grasslands-Based Agriculture – Economic And Social Implications, E. Bisangwa, Pat D. Keyser
The Business Case For Healthy Grasslands-Based Agriculture – Economic And Social Implications, E. Bisangwa, Pat D. Keyser
IGC Proceedings (1977-2023)
Native perennial warm-season grasses (NWSGs) of the United States (U.S.) provide valuable summer forage. Studies have shown their potential within grazing systems as a complement to cool-season forages, as well as their benefits to soil biota, wildlife biodiversity, carbon sequestration and their resiliency to extreme drought and flood events. In this paper, we demonstrate that, in addition to these benefits, NWSGs provide important economic value to beef and dairy producers as a hedge against financial risks posed by overreliance on cool-season grasses.
Breeding Forage Grasses For Increased Heat Tolerance To Combat Climate Change, Eric D. Billman, J. S. Morrison, B. S. Baldwin
Breeding Forage Grasses For Increased Heat Tolerance To Combat Climate Change, Eric D. Billman, J. S. Morrison, B. S. Baldwin
IGC Proceedings (1977-2023)
The onset of climate change brings many challenges for forage production in the southeastern United States, where it is projected to become hotter and dryer in the next century. To combat this climatic challenge, recurrent phenotypic selection was conducted in growth chambers on annual ryegrass (Lolium multiflorum Lam.) and orchardgrass (Dactylis glomerata L.) to select seedlings that can germinate and survive at temperatures of 40°C. Following three cycles of selection, germination was increased from < 5% to 45% in annual ryegrass, and from 20% to 80% in orchardgrass. The rate of germination also increased, in both species by a factor of 8x that of the base germplasm. Realized heritability also increased by 40 – 45% for each species by the end of the project. This work successfully improved a quantitative trait using recurrent phenotypic selection using growth chambers as a stable environment and provided the basis for combatting climate change in other outcrossing forage species.
Industry Perspectives, Challenges, And Opportunities To Enhance Alfalfa In Warm Climates, J. H. Bouton
Industry Perspectives, Challenges, And Opportunities To Enhance Alfalfa In Warm Climates, J. H. Bouton
IGC Proceedings (1977-2023)
Alfalfa (Medicago sativa L.; aka lucerne) acreage is low in comparison to perennial grasses in warm humid regions. This includes the tropics and subtropics, and in the USA, the Southeastern states. The alfalfa seed industry therefore saw few reasons to target sales and marketing in these regions. This overlooked logical opportunities. In this paper, these opportunities are examined for Southeastern USA. The Southeast contains a majority of beef herd, a high percentage of the dairy herd, and millions of acres suitable for conversion to alfalfa. Alfalfa is also now viewed as the best crop to solve problems inherent with …
Palatability Of Alfalfa (Medicago Sativa L.) And Orchard Grass (Dactylis Glomerata L.) Silages, R. D. Améndola-Massiotti, J. A. Burgueño, M. Concepción, L. Cruz
Palatability Of Alfalfa (Medicago Sativa L.) And Orchard Grass (Dactylis Glomerata L.) Silages, R. D. Améndola-Massiotti, J. A. Burgueño, M. Concepción, L. Cruz
IGC Proceedings (1977-2023)
The objective was to compare palatability with different methodologies for characterizing silages at Chapingo Autonomous University, México. Eight silages were used resulting from an experiment which evaluated effects of cutting time (08:00 and 14:00), time of wilting (0, 1 and 2 h) and use of lactic bacteria inoculant on properties of alfalfa (Medicago sativa L.) and orchard grass (Dactylis glomerata L.) silages. Organoleptic properties (odor, color, texture, moisture) were assessed by trained observers, using as categories: excellent, good, fair and poor. Dry matter content, CO2 rate of production and pH were also measured. For the evaluation of …
The Future Of Clovers In Forage Systems And As Cover Crops, J. H. Bouton, John R. Caradus
The Future Of Clovers In Forage Systems And As Cover Crops, J. H. Bouton, John R. Caradus
IGC Proceedings (1977-2023)
Clovers (Trifolium spp.) are the most widely used genera of legumes in forage systems, although only a limited number of the hundreds of perennial and annual species are commercially available. The number of varieties available within each of the main commercial species can be high and demonstrates past breeding achievements. Success relates to any clover’s ability to persist in mixtures with other forage species, across a range of soil types, management systems, and climates, while providing animal nutrition and biologically fixed nitrogen benefits. Uses range from traditional pasture mixtures with grasses to inclusion in multi-species mixtures, and as cover …
Economic Benefits Of Sustainable, Forage-Based Cattle Systems In Colombia And Nicaragua, S. Burkart, K. Enciso, M. Diaz, R. Van Der Hoek
Economic Benefits Of Sustainable, Forage-Based Cattle Systems In Colombia And Nicaragua, S. Burkart, K. Enciso, M. Diaz, R. Van Der Hoek
IGC Proceedings (1977-2023)
Forage-based cattle systems play a key role in rural economies of developing countries in terms of food security and poverty alleviation, particularly in tropical Latin America. However, they are often related to being a major cause of negative environmental impacts by contributing to increased greenhouse gas emissions, land degradation, and the reduction of biodiversity. Significant resources have been allocated to research and development in forage material improvement, including selection and breeding. A broad range of improved materials were released by private and public sector actors showing superior characteristics in terms of productivity and environmental impacts compared to native or naturalized …
Fermentation Control And Ethanol Production Of Total Mixed Ration Prepared With Apple Pomace And Microbial And Chemical Additives, J. Fang, Yimin Cai
Fermentation Control And Ethanol Production Of Total Mixed Ration Prepared With Apple Pomace And Microbial And Chemical Additives, J. Fang, Yimin Cai
IGC Proceedings (1977-2023)
The objective of this study is to evaluate the impacts of moisture adjustment, lactic acid bacteria (LAB) inoculant and chemical additives on fermentation characteristics and ethanol production of a total mixed ration (TMR) containing apple (Malus domestica) pomace. The TMR was prepared with apple pomace, corn, wheat bran, soybean meal, timothy, and alfalfa hay. In Experiment 1, the proportion of apple pomace was 150 g/kg of dry matter (DM), and the moisture of the TMR was unadjusted (control) or adjusted to 450, 500, and 550 g/kg, respectively. In Experiment 2, the same ingredient proportions as in experiment 1 …
Modelling Leucaena Biomass Under Rainfed Production Systems Of Semiarid Regions, M. J. D. Cândido, J. L. G. Santos, A. C. R. Cavalcante, S. R. Maranhão, M. A. Santos, J. M. Osorio Leyton
Modelling Leucaena Biomass Under Rainfed Production Systems Of Semiarid Regions, M. J. D. Cândido, J. L. G. Santos, A. C. R. Cavalcante, S. R. Maranhão, M. A. Santos, J. M. Osorio Leyton
IGC Proceedings (1977-2023)
The climatic variability of semiarid regions is the main source of uncertainties associated with forage and animal production, indicating a need for tools that accurately estimate forage production in order to construct a forage budgeting plan for livestock. This study simulated the biomass of Leucaena (Leucaena leucocephala) using the PHYGROW model in four locations located in Brazilian Semiarid. The work was carried out based on field data collected from 2019 to 2021. After sowing in 2018, leucaena was harvested when it reached 200 cm and to a target residual height of 70 cm. The biomass (fresh matter) was …
Canopy Characteristics And Growth Rate Of Bahiagrass Monoculture And Mixtures With Rhizoma Peanut, N. Caram, Lynn E. Sollenberger, Marcelo O. Wallau, C. H. Wilson
Canopy Characteristics And Growth Rate Of Bahiagrass Monoculture And Mixtures With Rhizoma Peanut, N. Caram, Lynn E. Sollenberger, Marcelo O. Wallau, C. H. Wilson
IGC Proceedings (1977-2023)
Understanding relationships among canopy light interception (LI), canopy height and structure, and leaf area index (LAI) informs management decisions and can improve efficiency of forage-livestock systems. In a long-term experiment in Florida, USA, we assessed the LI, LAI and sward height relationships of rhizoma peanut (Arachis glabrata Benth., RP)-bahiagrass (Paspalum notatum Flügge) mixed swards compared with bahiagrass monoculture to determine whether changes in canopy structure affect herbage accumulation (HA) rate due to changes in radiation use. Treatments were arranged in a semi-factorial, split-plot design (r=4). Bahiagrass monoculture and bahiagrass-RP mixtures were whole-plot treatments. Sub-plot treatments were an undefoliated …