Consulta: subjectFacets:"Stocking rate"
Registros recuperados: 26
Data/hora: 09/06/2024 02:57:28

Respuesta productiva de vacas lecheras en pastoreo a la suplementación con maíz fresco picado
Provedor de dados: 32
Autores: Ramírez Mella, Mónica.
El objetivo de este estudio fue evaluar el efecto de suplementar con maíz  fresco picado (MFP) a vacas lecheras en pastoreo en la respuesta productiva. Se  utilizaron 24 vacas Holstein multíparas. El pastoreo fue rotacional en una pradera  mixta alfalfa-pasto ovillo. Se evaluaron tres tratamientos: 0, 4 y 8 kg de MS de MFP  animal-1día-1. Todos los animales recibieron 3.8 kg de MS de alimento concentrado  animal-1 día-1. Se utilizó un diseño reversible simple (cross-over)  (tres tratamientos,  dos repeticiones con cuatro animales cada uno), de 3 períodos, con una duración de  19 días cada uno (10 d de adaptación y  9 d de muestreo). No hubo diferencias  significativas en producción individual ni en composición de la leche. El consumo de  forraje de la...
Palavras-chave: Producción de leche; Consumo de materia seca; Carga animal milk production; Dry matter intake; Stocking rate.
Ano: 2012
URL: http://hdl.handle.net/10521/838

Respuesta productiva de vacas lecheras en pastoreo a la suplementación con maíz fresco picado
Provedor de dados: 32
Autores: Ramírez Mella, Mónica.
El objetivo de este estudio fue evaluar el efecto de suplementar con maíz  fresco picado (MFP) a vacas lecheras en pastoreo en la respuesta productiva. Se  utilizaron 24 vacas Holstein multíparas. El pastoreo fue rotacional en una pradera  mixta alfalfa-pasto ovillo. Se evaluaron tres tratamientos: 0, 4 y 8 kg de MS de MFP  animal-1día-1. Todos los animales recibieron 3.8 kg de MS de alimento concentrado  animal-1 día-1. Se utilizó un diseño reversible simple (cross-over)  (tres tratamientos,  dos repeticiones con cuatro animales cada uno), de 3 períodos, con una duración de  19 días cada uno (10 d de adaptación y  9 d de muestreo). No hubo diferencias  significativas en producción individual ni en composición de la leche. El consumo de  forraje de la...
Tipo: Tesis
Palavras-chave: Producción de leche; Consumo de materia seca; Carga animal; Maestría; Ganadería; Milk production; Dry matter intake; Stocking rate.
Ano: 2008
URL: http://hdl.handle.net/10521/1232

Respuesta productiva de vacas lecheras en pastoreo a la suplementación con maíz fresco picado
Provedor de dados: 32
Autores: Ramírez Mella, Mónica.
El objetivo de este estudio fue evaluar el efecto de suplementar con maíz  fresco picado (MFP) a vacas lecheras en pastoreo en la respuesta productiva. Se  utilizaron 24 vacas Holstein multíparas. El pastoreo fue rotacional en una pradera  mixta alfalfa-pasto ovillo. Se evaluaron tres tratamientos: 0, 4 y 8 kg de MS de MFP  animal-1día-1. Todos los animales recibieron 3.8 kg de MS de alimento concentrado  animal-1 día-1. Se utilizó un diseño reversible simple (cross-over)  (tres tratamientos,  dos repeticiones con cuatro animales cada uno), de 3 períodos, con una duración de  19 días cada uno (10 d de adaptación y  9 d de muestreo). No hubo diferencias  significativas en producción individual ni en composición de la leche. El consumo de  forraje de la...
Palavras-chave: Producción de leche; Consumo de materia seca; Carga animal milk production; Dry matter intake; Stocking rate.
Ano: 2012
URL: http://hdl.handle.net/10521/918

Engorda de machos bovinos em pastagem cultivada de quicuio-da-amazônia (Brachiaria humidicola) na Ilha de Marajó.
Provedor de dados: 14
Autores: SALIMOS, E. P.; LOURENÇO JUNIOR, J. de B.; CAMARÃO, A. P.; RODRIGUES FILHO, J. A.; COSTA, N. A. da; TEIXEIRA NETO, J. F.; CARVALHO, L. O. D. de M.; NASCIMENTO, C. N. B. do; HANTANI, A. K.
bitstream/item/32752/1/CPATU-BP152.pdf
Tipo: Séries anteriores (INFOTECA-E)
Palavras-chave: Capim quicuio-da-amazônia; Ilha de Marajó; Pará; Brasil; Bovine; Fattening; Carcass; Feed.; Alimentação; Animal; Bovino; Carcaça; Engorda; Ganho de Peso; Nutrição; Taxa de Lotação.; Amazonia; Nutrition; Stocking rate; Weight gain.
Ano: 1994
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/379019

Ganho de peso de bubalinos sob três taxas de lotação em pastagem cultivada na ilha de Marajó.
Provedor de dados: 14
Autores: LOURENÇO JUNIOR, J. de B.; CAMARAO, A. P.; RODRIGUES FILHO, J. A.; COSTA, N. A. da; SIMAO NETO, M.; TEIXEIRA NETO, J. F.; BATISTA, H. A. M.; HANTANI, A. K.
bitstream/item/32694/1/CPATU-BP139.pdf
Tipo: Séries anteriores (INFOTECA-E)
Palavras-chave: Bubalino; Ilha de Marajó; Pará; Brasil; Buffalo; Management; Fattening; Feed.; Alimentação; Engorda; Forragem; Ganho de Peso; Nutrição; Pastejo; Valor Nutritivo.; Taxa de Lotação; Amazonia; Forage; Grazing; Nutritive value; Nutrition; Stocking rate; Weight gain.
Ano: 1993
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/378451

Grassland utilization in Himalayas
Provedor de dados: 19
Autores: 本江, 昭夫; HONGO, Akio.
In the Himalayas, domesticated yak is fed at an altitudinal range of 3,000 to 5,000m. Below this zone, the cow is more common. Hybrids are fed at an intermediate zone. In order to analyze the genetic basis of milk protein variation, milk samples were taken from the nak (female yak), cow and their hybrid. By principle component analysis, yak and a highland type of cow (kirmcome) were clearly distinguished from midland (shakzam) and lowland (palang) cows. Local Sherpa people may produce suitable animals for each zone by controlling animal reproduction systems. Generally speaking, a sustainable stocking rate is two adult animals per hectare in the central Himalayas. However, most pastures were overgrazed 3 to 10 times more than this level. The feedstuff...
Palavras-chave: Cow; Fodder tree; Hybrid; Stocking rate; Yak; ウシ; 飼料木; 雑種; 放牧圧; ヤク.
Ano: 1996
URL: http://ir.obihiro.ac.jp/dspace/handle/10322/3006

Soil physical properties under a 'Tanzânia' grass pasture fertilized with mineral nitrogen or intercropped with stylosanthes
Provedor de dados: 86
Autores: Ferreira,Camila Jorge Bernabé; Tormena,Cássio Antonio; Cecato,Ulysses; Franco,Hélio Henrique Soares; Moreira,Wagner Henrique; Galbeiro,Sandra; Ribeiro,Ossival Lolato.
Abstract: The objective of this work was to evaluate the physical properties of a soil with a 'Tanzânia' grass (Megathyrsus maximus) pasture fertilized with mineral nitrogen or intercropped with the legume 'Campo Grande' (Stylosanthes spp.), and subjected to continuous grazing and variable stocking rate, in a three-year chronosequence. The treatments were: 'Tanzânia' grass and Stylosanthes; and 'Tanzânia' grass fertilized with 75, 150, and 225 kg ha-1 N per year. The experiment was carried out in an Oxisol, in a randomized complete block design with three replicates, in split plots divided according to time (first, second, and third experimental years). The following soil properties were assessed annually: soil bulk density, porosity in the soil macropore...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Panicum maximum; Stylosanthes; Soil penetration resistance; Stocking rate.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2018000400478

The impact of superphosphate and surface-applied lime on the profitability and sustainability of wool production on the tablelands of NSW
Provedor de dados: 31
Autores: Khairo,   Salahadin A.; Norton,   Mark R.; Garden,   P.; Graham,   Phil; Langford,   Colin; Armstrong,   P.; Brassil,   T.
Soil acidification is one of the major forms of soil degradation in higher rainfall areas of the tablelands of NSW. A grazing experiment was conducted near Sutton, NSW, to assess the effect of various rates of superphosphate, lime, sewage ash and stocking rates on wool production and sustainability between 1999 and 2008. The results from the discounted cash flow analysis show that the net present value of the treatment without lime, the lower rate of superphosphate and the lowest stocking rate returned the highest net present value of $266.30/ha. Raising the application of superphosphate from 125kg/ha every two to three years to 250kg/ha every year on un-limed and limed soil reduced the net present value by $278.70/ha and $249.30/ha, respectively. The...
Tipo: Conference Paper or Presentation
Palavras-chave: Economic; Acid soil; Lime; Superphosphate; Sewage ash; Stocking rate; Policy.
Ano: 2009
URL: http://purl.umn.edu/47939

The profitability of wool production after surface application of lime and superphosphate on acid soils
Provedor de dados: 31
Autores: Khairo,   Salahadin A.; Norton,   Mark R.
Soil acidity is one of the major farm management problems on the Southern Tablelands of NSW. Soil acidity occurs naturally and yet some agricultural practices exacerbate the process through nitrification, leaching, removal of produce and accumulation of organic matter in the soil. A grazing experiment was conducted between 1999 and 2008 near Sutton, NSW, to assess the impact of various combinations of lime and superphosphate application, and stocking rates, on the profitability and sustainability of wool production on the Southern Tablelands. The profitability of 15 alternative experimental treatments was assessed using the discounted cash flow analysis method for a Merino wether enterprise. The results revealed that the highest net present value was...
Tipo: Article
Palavras-chave: Lime; Superphosphate; Profitability; Stocking rate; Farm Management.
Ano: 2010
URL: http://purl.umn.edu/120866

Sheep enterprises and their ability to service existing debt levels when faced with the continuation of drought feeding for 12 or 24 weeks
Provedor de dados: 31
Autores: Casburn,   Geoff.
Special Edition Sheep and Cattle Production in New South Wales
Tipo: Article
Palavras-chave: Gross margins; Stocking rate; Prolonged drought; Bank debt servicing indicators; Enterprise options; Farm Management.
Ano: 2011
URL: http://purl.umn.edu/121463

The Roles of Labor and Profitability in Choosing a Grazing Strategy for Beef Production in the U.S. Gulf Coast Region
Provedor de dados: 31
Autores: Gillespie,   Jeffrey M.; Wyatt,   Wayne; Venuto,   Brad; Blouin,   David; Boucher,   Robert W.
Comparisons are made concerning labor required and profitability associated with continuous grazing at three stocking rates and rotational grazing at a high stocking rate in the U.S. Gulf Coast region. A unique data set was collected using a time and motion study method to determine labor requirements. Profits are lowest for low stocking rate– continuous grazing and high stocking rate–rotational grazing. Total labor and labor in three specific categories are greater on per acre and/or per cow bases with rotational-grazing than with continuous-grazing strategies. These results help to explain relatively low adoption rates of rotational grazing in the region.
Tipo: Journal Article
Palavras-chave: Labor requirements; Rotational grazing; Stocking rate; Time and motion study; Agribusiness; Food Consumption/Nutrition/Food Safety; Industrial Organization; Labor and Human Capital; Livestock Production/Industries; Q12; Q24.
Ano: 2008
URL: http://purl.umn.edu/45527

Early weaning and concentrate supplementation strategies for lamb production on Tifton-85 pasture
Provedor de dados: 96
Autores: Silva,Cláudio José Araújo da; Fernandes,Sergio Rodrigo; Silva,Marina Gabriela Berchiol da; Monteiro,Alda Lúcia Gomes; Poli,César Henrique Espírito Candal; Prado,Odilei Rogerio; McMannus,Concepta; Gilaverte,Susana.
The influence of early weaning and concentrate supplementation strategies on sward characteristics, forage chemical composition and lamb productivity were evaluated in four production systems on Tifton-85 pasture: suckling lambs not supplemented until slaughter; suckling lambs supplemented with concentrate in creep feeding until slaughter; early-weaned lambs not supplemented until slaughter; and early-weaned lambs supplemented with concentrate until slaughter. Structural, morphological and productive characteristics of pasture were measured. The forage was chemically analyzed to estimate its composition. Lambs average daily gain and productivity were calculated. Sward height, forage and morphological components mass were lower in systems without weaning....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Average daily gain; Creep feeding; Leaf:stem ratio; Productivity; Stocking rate.
Ano: 2014
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982014000800428

Natural and improved pastures on growth and reproductive performance of Hereford heifers
Provedor de dados: 96
Autores: Rosa,Antonio Augusto Galarza; Vaz,Ricardo Zambarda; Lobato,José Fernando Piva.
This study evaluated yearling growth and reproductive performance of Hereford heifers at 24-26 months of age grazing on natural pastures at two stocking rates during winter and spring, associated or not to improved natural pastures. Heifers were classified according to three weight groups (Light, Medium and Heavy) and randomly distributed into four feeding management practices: 0.6 AU (1 animal unit = 450-kg body weight) - heifers on natural pastures at a stocking rate of 0.6 AU/ha; 0.8 AU - heifers on natural pastures at a stocking rate of 0.8 AU/ha; 0.6 AUI - heifers on natural pastures at a stocking rate of 0.6 AU/ha and on improved natural pastures between Sept 1st and Nov 1st; 0.8 AUI - heifers on natural pasture at a stocking rate of 0.8 AU/ha and on...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Body condition; Live weight; Pregnancy; Stocking rate; Weight gain.
Ano: 2012
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982012000100029

Dynamic of a papuã pasture under two grazing intensities and two nitrogen levels
Provedor de dados: 96
Autores: Adami,Paulo Fernando; Soares,André Brugnara; Assmann,Tangriani Simione; Assmann,Alceu Luiz; Sartor,Laércio Ricardo; Pitta,Christiano Santos Rocha; Franchin,Marcia Fernanda; Migliorini,Francisco.
This work aimed to evaluate the effects of grazing intensities and nitrogen fertilization levels on the dynamics of a Brachiaria plantaginea pasture. The experiment was laid out as a random block design, in a 3 × 2 factorial scheme, composed of three nitrogen levels (0, 200 and 400 kg/ha nitrogen in urea form) and two grazing intensities termed low mass (LM; forage mass of 1500 kg of DM/ha) and high mass (HM; forage mass of 3000 kg of DM/ha) in a continuously stocked swards with two replications. Animals used were half-blood Boer goats averaging five months old and 21 kg body weight (BW) for adjustment of the target forage mass. Real forage mass, average height of the plants and animal stocking rates were of 2,567 and 3,862 kg DM/ha; 23.6 and 31.2 cm and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Brachiaria plantaginea; Forage production; Forage nutritive value; Forage sward; Reseeding; Stocking rate.
Ano: 2010
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982010001200003

Animal performance and sward characteristics of two cultivars of Brachiaria brizantha (BRS Paiaguás and BRS Piatã)
Provedor de dados: 96
Autores: Euclides,Valéria Pacheco Batista; Montagner,Denise Baptaglin; Barbosa,Rodrigo Amorim; Valle,Cacilda Borges do; Nantes,Nayana Nazareth.
ABSTRACT The objective of the present study was to evaluate live weight gain per animal and per area and its relationship with the characteristics of pastures of Brachiaria brizantha cv. Paiaguás and Piatã. A randomized blocks experimental design was used, with two treatments and six replicates. The experimental area was 8.0 ha, divided into twelve paddocks of 0.67 ha. The grazing method used was continuous stocking, with variable stocking rate. Three tester steers were used per paddock. Sward heights were measured once a week, and the stocking rate (SR) was adjusted using regulator steers to maintain the sward height at 30 cm. Pasture samples were collected once a month, and herbage accumulation rate (HAR), percentage of leaves (PL), leaf:stem ratio...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Beef cattle; Canopy structure; Herbage accumulation; Nutritive value; Stocking rate.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982016000300085

Beef cattle performance in response to Ipyporã and Marandu brachiariagrass cultivars under rotational stocking management
Provedor de dados: 96
Autores: Euclides,Valéria Pacheco Batista; Nantes,Nayana Nazareth; Montagner,Denise Baptaglin; Araújo,Alexandre Romeiro de; Barbosa,Rodrigo Amorim; Zimmer,Ademir Hugo; Valle,Cacilda Borges do.
ABSTRACT The objective of this two-year study was to evaluate live weight gain per animal and per area and their relationships with the characteristics of BRS Ipyporã (Brachiaria ruziziensis × Brachiaria brizantha) and Marandu (Brachiaria brizantha) pastures. A completely randomized block design was used with two treatments and four replicates. The grazing method was rotational stocking, with variable stocking rate. Stocking rate was adjusted twice a week during the grazing period (six or seven days) and post-grazing canopy height target of 15 cm. Animals were weighed every 28 days. Pastures were evaluated pre-grazing to estimate forage accumulation rate, forage mass (FM), leaf (LP) and stem (SP) percentages, and nutritive value. In the post-grazing, FM,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Canopy structure; Forage accumulation; Nutritive value; Stocking rate.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982018000100304

Impact of nitrogen fertilization on the forage characteristics and beef calf performance on native pasture overseeded with ryegrass
Provedor de dados: 96
Autores: Brambilla,Daniel Martins; Nabinger,Carlos; Kunrath,Taise Robinson; Carvalho,Paulo César de Faccio; Carassai,Igor Justin; Cadenazzi,Mónica.
The overseeding of ryegrass (Lolium multiflorum Lam) on sub-tropical native pastures increases the availability and quality of forage in the cold season. However, soil chemical amendment and nitrogen use can affect the floristic composition, with consequences to the primary and secondary production. In a randomized complete block design with three replications, the effect of nitrogen fertilization (40, 90 and 140 kg/ha of nitrogen) on native pasture overseeded with ryegrass in two consecutive years was assessed regarding production and composition of pasture and performance of beef calves. In both years, the forage accumulation rate and forage production responded linearly to the increase in nitrogen rates as a result of increased participation of...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Average daily gain; Forage accumulation rate; Lolium multiflorum; Stocking rate.
Ano: 2012
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982012000300008

Fertilization and oversowing on natural grassland: effects on pasture characteristics and yearling steers performance
Provedor de dados: 96
Autores: Ferreira,Eduardo Tonet; Nabinger,Carlos; Elejalde,Denise Adelaide Gomes; Freitas,Aline Kellermann de; Carassai,Igor Justin; Schmitt,Fernanda.
The objective of this study was to evaluate the vegetal and animal production of a natural pasture on a Mollisol soil in the region of Campanha, in RS. The experimental design consisted of complete randomized blocks with three replicates, which enables the comparison between natural unfertilized pastures with fertilized pastures and pastures fertilized and overseeded with Lolium multiflorum, Lotus corniculatus cv. São Gabriel and Trifolium repens cv. Lucero (NPO). Data were submitted to the analyses of variance considering seasons of the year as time repeated measurements. Aberddeen Angus calves of about nine months of age were used in continuous stocking with variable stocking rate in order to maintain forage offer at 13% of live weight. Data were...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Daily live weight gain; Forage accumulation rate; Forage offer; Seasonal forage production; Stocking rate.
Ano: 2011
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982011000900028

NUTRIENTS BALANCES IN BEEF CATTLE PRODUCTION SYSTEMS AND THEIR IMPLICATIONS FOR THE ENVIRONMENT
Provedor de dados: 127
Autores: Alfaro,M; Salazar,F. S; Oenema,O; Iraira,S; Teuber,N; Ramirez,L; Villarroel,D.
The main inputs and outputs of nitrogen (N) and phosphorus (P) in soils and swards under typical Southern Chilean conditions were determined between 2004-2005 and 2006-2007 to establish soil and field gate N and P balances under different immediate stocking rates (63 and 191 anim ha-1 d-1) and field slope treatments (4 and 12%). Treatments received 67.5 and 40 kg N and P ha-1 yr-1 as inorganic fertilizer. The main N and P input to the soil balances was N mineralization (304 kg ha-1 yr-1) and inorganic fertilizer (62 and 69% for N and P, respectively). The main output for all treatments was plant uptake (95% and 100% on average for N and P, respectively). The N and P apparent use efficiency was high (&gt;95%). The main N and P input to field gate balances...
Tipo: Journal article
Palavras-chave: Stocking rate; Field slope; Grazing; Nutrient budget.
Ano: 2009
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-27912009000100004

Modelling beef cattle production systems from the Pampas in Brazil to assess intensification options
Provedor de dados: 63
Autores: Lampert,Vinícius do Nascimento; Canozzi,Maria Eugênia Andrighetto; McManus,Concepta Margaret; Dill,Matheus Dhein; Oliveira,Tamara Esteves de; Mercio,Thomaz Zara; Teixeira,Odilene de Souza; Barcellos,Júlio Otávio Jardim.
ABSTRACT Traditional livestock productivity is hard to estimate, since it depends on a gamut of animal production indicators that are difficult to measure for many farms. Thus, we propose an analytical method for estimating productivity and understanding the importance of animal production indicators under different full-cycle cattle production systems in Brazil. To evaluate the impact of these indicators, equations were derived from a comutational model of herd evolution for estimating the output parameters of the system as follows: productivity per hectare (PH) and offtake rate (COR), as a function of the indicators; calving rate (CR), mating age (AM), age of slaughter (AS) and stocking rate (SR). For this analysis, twenty-seven scenarios (simulation...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Adoption of technology; Animal production; Management; Stocking rate.
Ano: 2020
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162020000400502

Sward structure and livestock performance in guinea grass cv: Tanzania pastures managed by rotational stocking strategies
Provedor de dados: 63
Autores: Euclides,Valéria Pacheco Batista; Montagner,Denise Bataglin; Difante,Gelson dos Santos; Barbosa,Rodrigo Amorim; Fernandes,Wellington Souza.
Grazing strategy is a key element in the determination of sward structure, herbage nutritive value and animal performance. We aimed to compare the herbage characteristics and performance of livestock in pastures of Panicum maximum cv. Tanzania managed, using two rotational stocking strategies, which provided either a fixed-length rest period (FRP) of 35 days in the spring and fall and 30 days in the summer, or a variable-length rest period (VRP), determined by the time required for the canopy to achieve 70 cm in height. The pastures were evaluated in the pregrazing condition for forage mass (FM); leaf (LP), stem (SP) and dead matter (DP) percentages; and nutritive value (NV). The animals were weighed every 28 days. Pastures managed with the FRPs exhibited...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Panicum maximum; Canopy height; Nutritive value; Savannah; Stocking rate.
Ano: 2014
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162014000600002

Temporal profiles of vegetation indices for characterizing grazing intensity on natural grasslands in Pampa biome
Provedor de dados: 63
Autores: Junges,Amanda Heemann; Bremm,Carolina; Fontana,Denise Cybis; Oliveira,Carlos Alberto Oliveira de; Schaparini,Laura Pigatto; Carvalho,Paulo César de Faccio.
ABSTRACT The Pampa biome is an important ecosystem in Brazil that is highly relevant to livestock production. The objective of this study was to analyze the potential use of vegetation indices to discriminate grazing intensities on natural grasslands in the Pampa biome. Moderate Resolution Imaging Spectroradiometer (MODIS) Normalized Difference Vegetation Index (NDVI) and Enhanced Vegetation Index (EVI) images from Jan to Dec, 2000 to 2013 series, were analyzed for natural grassland experimental units managed under high (forage allowance of 5 ± 2 % live weight – LW), moderate (13 ± 5 % LW) and low grazing intensity (19 ± 7 % LW). Regardless of intensity, the temporal profiles showed lower NDVI and EVI during winter, increased values in spring because of...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: MODIS; NDVI; EVI; Green biomass; Stocking rate.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162016000400332

Production of sheep grazing on nitrogen-fertilized tifton 85 grass in continuous stocking
Provedor de dados: 2
Autores: Moreira, Andréia Luciane; Agência Paulista de Tecnologia dos Agronegócios; Fagundes, Jailson Lara; Universidade Federal do Sergipe; Yoshihara, Eidi; Agência Paulista de Tecnologia dos Agronegócios; Backes, Alfredo Acosta; Universidade Federal do Sergipe; Barbosa, Leandro Teixeira; Universidade Federal do Sergipe; Heinrichs, Reges; Universidade Estadual Paulista “Júlio de Mesquita Filho".
Biomass and forage volume density and the performance and stocking rate of sheep on pastures with nitrogen-fertilized Tifton 85 and subjected to a continuous stocking system were evaluated. Four doses of nitrogen (0, 100, 200, and 400 kg ha-1 year), arranged in an experimental design with randomized blocks and four replications, were analyzed. Sixteen paddocks and Santa Inês sheep were used as test animals, coupled to crossbreed Santa Inês sheep as regulating animal stocking. Nitrogen-fertilized Tifton 85 pastures increased the amount of forage biomass and volume density which affected stocking rate and weight gain of sheep in continuous grazing. When pastures with Tifton 85 were administered in variable load continuous stocking, with grass kept at 15 cm,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: 5.04.00.00-2; 5.04.04.00-8 animal performance; Cynodon spp.; Grazing  nitrogen; Pasture; Stocking rate.
Ano: 2014
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/21935

Forage yield in pastures with bermuda grass mixed with different legumes
Provedor de dados: 2
Autores: Anjos, Amanda Nunes Assis dos; Olivo, Clair Jorge; Sauter, Caroline Paim; Silva, Aline Rodrigues; Santos, Fabiene Tomazetti dos; Seibt, Daiane Cristine.
Three grazing systems with Coastcross-1 bermuda grass (CC) + 100 kg N ha-1 year-1 + common vetch; CC + 100 kg N ha-1 year-1 + arrowleaf clover; and CC + 200 kg N ha-1 year-1 were evaluated. Thirteen grazing cycles were performed during the experimental period (313 days), with two, five, four and two cycles respectively in winter, spring, summer and fall. Lactating Holstein cows were used in the evaluation. Daily accumulation rate, forage production, rate of forage disappearance, agronomic intake, grazing efficiency, herbage allowance and stocking rate were evaluated. Mean rates of forage yield and stocking rate were 20.8; 17.6 and 19.7 t DM ha-1 and 7.0; 6.8 to 6.8 animal units ha-1 day-1 for the respective forage systems. The mixture Coastcross-1 plus...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: 5.04.00.00-2; 5.04.04.00-8 Cynodon; Lactating cows; Stocking rate; Trifolium vesiculosum; Vicia sativa.
Ano: 2016
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/31114

Productivity and nutritive value of elephant grass pastures under organic and conventional production systems
Provedor de dados: 42
Autores: SIMONETTI,GABRIELA D.; OLIVO,CLAIR J.; SEIBT,DAIANE C.; BRATZ,VINICIUS F.; SAUTHIER,JULIO C.; ADAMS,CARINE B.
Abstract: Elephant grass (EG) (Pennisetum purpureum Schum.) have great importance in tropical and subtropical climates, especially on dairy farms. Normally, EG is established alone under high fertilization levels. EG in organic production system can improve low production costs and environmental issues, are still little known. The aim of this research was to evaluate the performance of herbage yield, nutritive value, extraction/ export nutrient and forage yield and animal responses. Three production systems of EG were analyzed: (i) EG mixed spontaneous-growing species (SGE) in warm-season and ryegrass (R) in cool-season under organic production; (ii) EG mixed SGE + R under conventional system (positive control); and (iii) EG based under conventional...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Crude protein; Dairy cows; Pennisetum purpureum Schum; Production of forage; Stocking rate.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652019000300852

Perennial grasses traits as functional markers of grazing intensity in basaltic grasslands of Uruguay
Provedor de dados: 117
Autores: Jaurena,Martin; Lezama,Felipe; Cruz,Pablo.
Natural grasslands in the basaltic region of Uruguay are threatened by an increase in stocking rates and changes in land use. To assess the effect of grazing intensification, plant functional types are proposed as simple tools to aid the monitoring and management of vegetation. In the present study we evaluated the effect of stocking rate increase at community level taking into account plant traits of 23 dominant perennial grass species. In order to identify plant functional types, we determined the grazing response in an experiment with two wethers stocking rates (0.78 and 1.56 livestock units ha-1) quantifying species cover and traits values. Leaf dry matter content (LDMC) and specific leaf area (SLA) were the traits that best described the perennial...
Tipo: Journal article
Palavras-chave: Natural grasslands; Diagnosis; Management; Stocking rate.
Ano: 2012
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-58392012000400013