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Beef heifers grazing behavior and herbage intake in natural grassland under rotational grazing Ciência Rural
Barbieri,Cezar Wankura; Quadros,Fernando Luiz Ferreira de; Jochims,Felipe; Kuinchtner,Bruno Castro; Carvalho,Thiago Henrique Nicola de; Casanova,Pedro Trindade; Fernandes,Augusto Miranda; Pereira,João Bento.
It was evaluated the effect of two rest intervals between grazing occupations in rotational grazing; 375 and 750 DD (degree-days); based on the cumulative thermal sum necessary for leaf expansion of native grasses of two functional groups over the grazing behavior variables from beef heifers with 12 months old. The experiment was conducted as a completely randomized block design, with two treatments, three replications and measures repeated over time. Grazing behavior was assessed in three occasions (Nov 2011, Jan and Mar 2012), with 24h each. The herbage intake was estimated using an external marker (Cr2O3). The leaf mass was similar among the rest intervals, with a mean of 1261kg DM ha-1. The average grazing time was 627.4min day-1 and bite rate was 37.1...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Bite rate; Degree-day; Grazing time; Sward structure; Thermal-sum.
Ano: 2015 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782015001102056
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Canopy characteristics and behavior of Nellore heifers in Brachiaria brizantha pastures under different grazing heights at a continuous stocking rate R. Bras. Zootec.
Casagrande,Daniel Rume; Azenha,Mariana Vieira; Valente,André Luis da Silva; Vieira,Bruno Ramalho; Moretti,Matheus Henrique; Ruggieri,Ana Cláudia; Berchielli,Telma Teresinha; Reis,Ricardo Andrade.
The objective of this study was to evaluate the Brachiaria brizantha cv. Marandu canopy structure maintained at different grazing heights under a continuous stocking rate and with a dietary supplementation strategy for the animals during the rainy season. This study also intended to observe the relationships of these variables with the grazing behaviors of the heifers. The effects of three canopy heights (15, 25 and 35 cm) were evaluated in association with three types of supplements: one mineral and two protein/energy supplements, the first with a high rumen degradable protein and energy and the others with a low ratio. Both the protein/energy supplements were provided at 0.3% of body weight/day. The experimental design was completely randomized, with two...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Canopy height; Grazing behavior; Grazing time; Herbage mass; Number of meals.
Ano: 2011 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982011001100003
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Canopy characteristics, animal behavior and forage intake by goats grazing on Tanzania-grass pasture with different heights - doi: 10.4025/actascianimsci.v34i4.14544 Animal Sciences
Ribeiro, Aline Mendes; Universidade Federal do Piauí; Oliveira, Maria Elizabete de; Universidade Federal do Piauí; Silva, Patrícia Carvalho da; Universidade Federal do Piauí; Rufino, Marcelo de Oliveira Alves; Universidade Federal do Piauí; Rodrigues, Marcônio Martins; Universidade Federal do Piauí; Santos, Maurílio Souza dos; Universidade Federal do Piauí.
This study evaluated the influence of Tanzania-grass sward height (30, 50, 70 and 90 cm) on the morphological characteristics of the canopy, grazing behavior and forage intake by adult Anglo Nubian female goats. A completely randomized experimental design was employed, with two replicates in space and two replicates in time. Six animals were used to assess the grazing behavior, and four, the ingestion process. The rise in sward height increased the forage and leaf mass, the percentages of stem and dead material, and reduced the leaf stem-1 ratio. Above 50 cm there was an increase in grazing time and a decrease in leisure time. A positive linear correlation was detected between sward height and bite depth. The consumed forage mass, ingestion rate and daily...
Tipo: Pesquisa de campo Palavras-chave: 5.04.04.00-8 consumption; Forage production; Bite rate; Ingestion rate; Grazing time.
Ano: 2012 URL: http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/14544
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Canopy structure, ingestive behavior and displacement patterns of beef heifers grazing warm-season pastures Arq. Bras. Med. Vet. Zootec.
Glienke,C.L.; Rocha,M.G.; Pötter,L.; Roso,D.; Montagner,D.B.; Oliveira Neto,R.A..
Analyses in a data set of six experiments (n=436) was performed with the aim of characterizing canopy structure and forage intake patterns of beef heifers grazing on Pearl millet (Pennisetum americanum), Alexandergrass (Urochloa plantaginea) and Coastcross (Cynodon dactylon). Forage and leaf lamina mass were similar among species, 3001.4 and 668.1kg of DM/ha, respectively, while leaf:stem ratio of canopy vertical strata was different. Intake rate (12g DM/minute), bite mass (0.343g DM/bite) and bite rate (36.6bites per minute) were similar in Pearl millet and Alexandergrass. In Pearl millet, neutral detergent fiber content (56.1%) in forage as grazed, grazing time (518.9 minutes/day) and displacement rate (8.8 steps/minute) were lower. Increased grazing...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Cynodon dactylon; Feeding station; Grazing time; Pennisetum americanum; Urochloa plantaginea.
Ano: 2016 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352016000200457
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Comportamento de ovinos em sistema silvipastoril com cajueiro. Repositório Alice
RODRIGUES, M. M.; SANTOS, M. S. dos; LEAL, T. M.; OLIVEIRA, M. E. de; MOURA, R. L. de; ARAÚJO, D. L. da C.; RODRIGUES, F. N.; VASCONCELOS, J. I. de..
Avaliou-se o comportamento de ovinos Santa Inês na fase de terminação em sistema silvipastoril de capim-massai com cajueiro com ou sem estilosantes Campo Grande. Foi avaliada a massa de forragem, estrutura do pasto e os tempos de pastejo, ruminação, ócio, deslocamento, taxa de bocado dos animais e a frequência com que cada espécie foi pastejada. Apesar da maior massa de forragem total no pasto com estilosantes, massa de folhas verdes, incluindo a leguminosa, não diferiu entre os tratamentos. A presença da leguminosa modificou a estrutura do dossel, com elevação da altura e da proporção de colmo. O tempo de pastejo e a taxa de bocado não diferiram entre os tratamentos, uma vez que a oferta de folhas verdes foi semelhante entre os tratamentos (6,32% do PV)....
Tipo: Artigo em periódico indexado (ALICE) Palavras-chave: Estrutura de planta; Massa de forragem; Taxa de bocado; Tempo de pastejo; Stilosante; Plant structure; Stylosanthes; Forage mass; Bit rate; Grazing time.
Ano: 2012 URL: http://www.alice.cnptia.embrapa.br/handle/doc/1017789
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Comportamento ingestivo de diferentes categorias de bovinos de corte em pastagens nativas e exóticas durante seca no Pantanal. Repositório Alice
SILVA, J. C. F. D. DA.; SANTOS, S. A.; SALES, R. L.; CRUZ, L. H. DA.; GARCIA, J. B.; RAVAGLIA, E..
Este estudo objetivou avaliar o comportamento ingestivo de diferentes categorias de bovinos de corte (vacas, novilhas e bezerros desmamados) criados em pastagens cultivadas e nativas submetidas a diferentes estratégias de manejo, durante período de seca no Pantanal. A study was carried out to evaluate the ingestive behavior of beef cattle belonging to different categories (cows, heifers and weaned calves) reared on natural and cultivated pastures submitted to different management strategies during dry season in the Pantanal.
Tipo: Artigo em anais de congresso (ALICE) Palavras-chave: Consumo; Pastejo diferido; Taxa de bocado; Tempo de busca; Tempo de pastejo; Biting rate; Deferred grazing; Grazing time; Intake; Search time.
Ano: 2010 URL: http://www.alice.cnptia.embrapa.br/handle/doc/868281
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Foraging behavior and ruminal fermentation of dairy cows grazing ryegrass pasture alone or with white clover PAB
Ribeiro Filho,Henrique Mendonça Nunes; Peyraud,Jean-Louis; Delagarde,Rémy.
The objective of this work was to evaluate the influence of pasture composition and regrowth age on the relationship between feeding behavior and ruminal fermentation in dairy cows grazing perennial ryegrass with or without white clover. The experiment was carried out in a 2x2 factorial arrangement, with two sward types and two ages of regrowth. Swards of perennial ryegrass sown alone (PRG) and of perennial ryegrass mixed with white clover (GC) were evaluated. Twelve late-lactation Holstein cows, fistulated at the rumen, were distributed in a 4x4 latin square experimental design with four 12-day periods. Daily distribution of grazing was similar in the PRG and the GC swards, but the concentration of rumen volatile fatty acids (VFA) was higher and the...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Lolium perenne; Trifolium repens; Digestion; Grazing; Grazing time.
Ano: 2012 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2012000300019
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Ingestive behavior and displacement patterns of beef heifers on Italian ryegrass pasture R. Bras. Zootec.
Glienke,Carine Lisete; Rocha,Marta Gomes da; Roso,Dalton; Pötter,Luciana; Costa,Vagner Guasso da; Machado,Juliana Medianeira.
The effect of supplementation on ingestive behavior and displacement patterns of beef heifers grazing on Italian ryegrass (Lolium multiflorum Lam.) pasture was evaluated. The grazing method was continuous with variable stocking rate. The experimental design was completely randomized with repeated measures on time. The supplement utilized was a commercial ration (17% CP, 21.4% NDF), daily supplied at 2 pm, in the proportion of 1% of body weight. The evaluations were made through visual observations, in four continuous periods of 24 hours. There was no difference in the bite rate between heifers with and without supplement and bite rate was higher at the end of the period of pasture utilization. Supplemented animals increased bite mass. The number of...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Feeding stations; Grazing time; Lolium multiflorum; Supplementation.
Ano: 2010 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982010000200003
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Ingestive behavior of hoggets given different types of supplement on ryegrass pasture Animal Sciences
Stivanin, Sheila Cristina Bosco; Universidade Federal de Santa Maria; Rocha, Marta Gomes da; Universidade Federal de Santa Maria; Pötter, Luciana; Universidade Federal de Santa Maria; Hampel, Viviane da Silva; Universidade Federal de Santa Maria; Oliveira, Renata Aqel de; Universidade Federal de Santa Maria; Bergoli, Tuani Lopes; Universidade Federal de Santa Maria.
The ingestive behavior of hoggets was assessed under intermittent grazing method with three days of paddock occupation. These animals remained exclusively on Italian ryegrass (Lolium multiflorum Lam) pasture or on ryegrass pasture and receiving 1.2% of DM in relation to body weight of rice paddy, corn grain or whole rice bran as a supplement during the vegetative, pre-flowering and flowering phenological stages of ryegrass. The experimental design was a randomized split-split plots wherein the types of supplement were considered as main plot, phenological stages as subplot and the days of occupation as sub-subplots. The hoggets grazed for a longer time when kept exclusively on ryegrass pasture. The hoggets grazed for less time in the vegetative stage of...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Rice bran; Rice grain; Corn grain; Bite rate; Grazing time.
Ano: 2014 URL: http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/21641
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Sward canopy structure and performance of beef heifers under supplementation in Brachiaria brizantha cv. Marandu pastures maintained with three grazing intensities in a continuous stocking system R. Bras. Zootec.
Casagrande,Daniel Rume; Ruggieri,Ana Cláudia; Moretti,Matheus Henrique; Berchielli,Telma Teresinha; Vieira,Bruno Ramalho; Roth,Anna Paula de Toledo Piza; Reis,Ricardo Andrade.
The objective of this study was to assess the sward canopy structure of Brachiaria brizantha cv. Marandu pastures maintained in three grazing intensities under continuous stocking system during the rainy season, along with the behavior and performance of grazing beef heifers supplemented with mineral salt or an energy/protein supplement. Three levels of forage allowance were assessed: 2.0, 2.5 and 3.0 kg of forage/kg of live weight, combined with two supplements (ad libitum mineral salt, and an energy/protein supplement at 0.3% of live weight/day, supplied daily). The experiment was designed as a randomized block study with two replications. The supplements did not influence the variables related to the canopy structure. Canopy height was greater at higher...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Canopy height; Forage allowance; Grazing time; Number of feedings supplementation time.
Ano: 2011 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982011001000002
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Sward structural characteristics and ingestive behaviour of beef heifers in a Pearl Millet pasture R. Bras. Zootec.
Montagner,Denise Baptaglin; Rocha,Marta Gomes da; Genro,Teresa Cristina Moraes; Quadros,Fernando Luiz Ferreira de; Roman,Juliano; Roso,Dalton.
Ingestive behaviour of beef heifers and sward structural characteristics of Pearl Millet (Pennisetum americanum (L.) Leeke) were evaluated. The experiment was carried out in a randomized complete design following a repeated measure arrangement (three experimental periods) with three replications of two leaf blade masses (600 and 1,000 kg/ha DM), which were maintained using continuous grazing with variable stocking rate. The variables measured were sward height, herbage mass, leaf blade and stem bulk density in sward vertical strata (sward structural characteristics), grazing, idling, rumination time and bite rate of heifers (ingestive behaviour). Bite rate was modified by pasture management and was lower when the leaf blade mass was 1,000 kg/ha DM. The...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Bite rate; Grazing time; Leaf blade bulk density; Pennisetum americanum; Rumination time.
Ano: 2009 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982009000900005
Registros recuperados: 11
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