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| Silva,Wilton Ladeira da; Galzerano,Leandro; Reis,Ricardo Andrade; Ruggieri,Ana Cláudia. |
| The experiment was carried out on Cynodon spp cv. Tifton 85 pastures grazed by sheep under rotational stocking, with the objective of evaluating the structural characteristics as well as the forage mass of the pastures subjected to three grazing intensities in successive cycles. Treatments were composed of three residual leaf area indices (rLAI; 2.4; 1.6 and 0.8), allocated in completely randomized blocks with seven replications, totaling 21 experimental units. Tiller population density, pasture height, leaf area index, forage morphological composition and pasture forage mass were evaluated. The rLAI modified the tiller population density, which increased linearly with decrease in the rLAI of the pastures. Dry masses of leaf blade, stem and dead material... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Leaf area index; Light interception; Sheep; Rotational stocking; Tillers. |
| Ano: 2013 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982013000400002 |
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| Olivo,Clair Jorge; Agnolin,Carlos Alberto; Aguirre,Priscila Flôres; Bem,Cláudia Marques de; Araújo,Tiago Luís da Ros de; Diehl,Michelle Schalemberg; Meinerz,Gilmar Roberto. |
| The objective was to evaluate elephant grass (Pennisetum purpureum Schum.) pastures, under the agroecological and conventional systems, as forage mass and stocking rate. In the agroecological system, the elephant grass was established in rows spaced by 3.0 m from each other. During the cool season ryegrass (Lolium multiflorum Lam.) was established between these rows, which allowed the development of spontaneous growth species during the warm season. In the conventional system the elephant grass was established singularly in rows spaced 1.4 m from each other. Organic and chemical fertilizers were applied at 150 kg of N/ha/year with in the pastures under agroecological and conventional systems, respectively. Lactating Holstein cows which received 5.0 kg/day... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Lactating cows; Lolium multiflorum; Pennisetum purpureum; Production systems; Rotational stocking. |
| Ano: 2014 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982014000600289 |
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| Peres,Afonso Aurélio de Carvalho; Carvalho,Carlos Augusto Brandão de; Carvalho,Maria Inês de Aquino Barbosa; Vasquez,Hernán Maldonado; Silva,José Fernando Coelho da; Clipes,Renata Cogo; Morenz,Mirton José Frota. |
| Production and quality of milk from dairy cows grazing exclusively on Mombasa grass pasture, during the spring-summer period and fed roughage supplementations, during the autumn-winter, were evaluated in two consecutive years. The pasture of 11.4 ha was divided into 57 paddocks of 2,000 m² each, including three replications with 19 paddocks each. The pasture was managed with two occupation days and 36 resting days. During the spring-summer period, cows received only grass pasture. In the autumn-winter period, they had access to Mombasa grass pasture and received roughage supplementations (black oat pasture; sorghum silage or sugarcane + urea) and pasture every 28 days, alternately. The animals had access to mineral mix and water and received 500 g of... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Black oat; Dairy cattle; Rotational stocking; Sorghum silage; Sugarcane. |
| Ano: 2012 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982012000300044 |
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| Morenz,Mirton José Frota; Silva,José Fernando Coelho da; Aroeira,Luiz Januário Magalhães; Deresz,Fermino; Vásquez,Hernán Maldonado; Lopes,Fernando César Ferraz; Paciullo,Domingos Sávio Campos; Tedeschi,Luis Orlindo. |
| The Cornel Net Carbohydrate and Protein System model version 5.0 was assessed as for its prediction of dry matter intake and milk production of grazing lactating Holstein × Zebu cows. Eight lactating cows grazing elephant grass (Pennisetum purpureum, Schum., cv. Napier) were used in two experiments of 30 days each. The experimental design was of randomized blocks (subplots). Dry matter intake was estimated using the chromium oxide and in vitro dry matter digestibility techniques. The estimated dry matter intake was compared with the values predicted by the model. Extrusa samples of the elephant grass pasture were obtained from a cow with esophageal fistula during nine days in each experimental period. Carbohydrate and nitrogenous fractions were analyzed... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Chromium oxide; Elephant grass; Lactating cows; Rotational stocking. |
| Ano: 2012 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982012000200024 |
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| Schmitt,Daniel; Padilha,Deisy Andrade; Medeiros-Neto,Cauby; Ribeiro Filho,Henrique Mendonça Nunes; Sollenberger,Lynn Elwood; Sbrissia,André Fischer. |
| ABSTRACT Two complementary experiments were conducted to investigate the relationships between the canopy structure of Pennisetum clandestinum (kikuyugrass) pastures created by intermittent stocking strategies and daily herbage intake by cattle. The first experiment (Exp. I) evaluated the relationship between different pre-grazing heights (10, 15, 20, and 25 cm) and a single defoliation intensity (50% reduction in the initial heights). In the second experiment (Exp. II), four defoliation intensities (40, 50, 60, or 70% reduction in height) were combined with a single pre-grazing height (25 cm). The following variables were analyzed: i) plant-part composition, herbage mass, and bulk density of the grazing layer; and ii) daily herbage intake. The data were... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Grazing management; Pennisetum clandestinum; Rotational stocking; Defoliation severity. |
| Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1806-66902019000300493 |
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| Bratz,Vinicius Felipe; Olivo,Clair Jorge; Fernandes,Julia Aires; Seibt,Daiane Cristine; Alessio,Vinicius. |
| ABSTRACT The aim of this research was to evaluate elephant grass under an organic and a conventional system. Under the organic system, species with complementary growth periods were combined; elephant grass was planted in rows 3.0 m apart and ryegrass was sown between the rows of elephant grass during the winter period, with spontaneous species being allowed to develop during the summer period. For the conventional production, two types of pasture were studied: one using the same strategy as for the organic production, and the other with a monocrop of elephant grass. Under the conventional and organic systems, 120 kg of N ha-1 were applied as chemical and organic fertiliser (cattle manure and pig slurry) respectively. Holstein cows were used in the... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Apparent forage intake; Grazing efficiency; Rotational stocking; Pennisetum purpureum; Forage production systems. |
| Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1806-66902019000100159 |
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