Ingestive behavior of cattle kept in Brachiaria brizantha cv. Xaraés grass managed under different grazing heights
This experiment was conducted to evaluate the effect of grazing heights on daytime behavioral activities of Nellore beef cattle in the rainy season. The experimental area was 12 hectares divided into paddocks of one hectare each. The treatments consisted of four defoliation heights (15, 30, 45 and 6...
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| Format: | Article |
| Language: | English |
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Universidade Estadual de Londrina
2014-02-01
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| Series: | Semina: Ciências Agrárias |
| Subjects: | |
| Online Access: | http://www.uel.br/revistas/uel/index.php/semagrarias/editor/submission/16634 |
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| author | Marco Aurélio Alves de Freitas Barbosa Letícia Maria Castro Rondineli Pavezzi Barbero Vinicius Campachi Brito Renan Lucas Miorin Rafael Mantegazza Saad Edson Luis de Azambuja Ribeiro Valter Harry Bumbieris Junior |
| author_facet | Marco Aurélio Alves de Freitas Barbosa Letícia Maria Castro Rondineli Pavezzi Barbero Vinicius Campachi Brito Renan Lucas Miorin Rafael Mantegazza Saad Edson Luis de Azambuja Ribeiro Valter Harry Bumbieris Junior |
| author_sort | Marco Aurélio Alves de Freitas Barbosa |
| collection | DOAJ |
| description | This experiment was conducted to evaluate the effect of grazing heights on daytime behavioral activities of Nellore beef cattle in the rainy season. The experimental area was 12 hectares divided into paddocks of one hectare each. The treatments consisted of four defoliation heights (15, 30, 45 and 60 cm) in pastures of Brachiaria brizantha cv. Xaraés with three replicates each. It was used the continuos grazing method, with variable stocking rate. Forage samples collected on the plots were sent to the laboratory for separation of the botanical components, weighing and determination of dry matter, with the material collected by simulated grazing. The variables: grazing time, idle time and ruminating time were evaluated for 12 consecutive hours on days 15 and 16 February 2011, considering the morning and afternoon periods. It was used a completely randomized design. The height of the canopy significantly influenced the daily grazing time and ruminating time, with a quadratic response as a function of time of defoliation. The bite rate decreased as a function of heights studied. However the chemical composition of the material collected by simulated grazing did not differ between treatments. Xaraés grass swards grazed at around 45 cm height provide greater ease of apprehension by grazing cattle. |
| first_indexed | 2024-12-12T10:34:27Z |
| format | Article |
| id | doaj.art-40b95307454a460fb4655b0e4a99ceb5 |
| institution | Directory Open Access Journal |
| issn | 1676-546X 1679-0359 |
| language | English |
| last_indexed | 2024-12-12T10:34:27Z |
| publishDate | 2014-02-01 |
| publisher | Universidade Estadual de Londrina |
| record_format | Article |
| series | Semina: Ciências Agrárias |
| spelling | doaj.art-40b95307454a460fb4655b0e4a99ceb52022-12-22T00:27:15ZengUniversidade Estadual de LondrinaSemina: Ciências Agrárias1676-546X1679-03592014-02-01346Supl24113412010.5433/1679-0359.2013v34n6Supl2p4113Ingestive behavior of cattle kept in Brachiaria brizantha cv. Xaraés grass managed under different grazing heightsMarco Aurélio Alves de Freitas Barbosa 0Letícia Maria Castro 1Rondineli Pavezzi Barbero 2Vinicius Campachi Brito 3Renan Lucas Miorin 4Rafael Mantegazza Saad 5Edson Luis de Azambuja Ribeiro 6Valter Harry Bumbieris Junior 7Universidade Estadual de LondrinaUniversidade Estadual de LondrinaFaculdade de Ciências Agrárias e VeterináriasUniversidade Estadual de LondrinaUniversidade Estadual de LondrinaUniversidade Estadual de LondrinaUniversidade Estadual de LondrinaUniversidade Estadual de LondrinaThis experiment was conducted to evaluate the effect of grazing heights on daytime behavioral activities of Nellore beef cattle in the rainy season. The experimental area was 12 hectares divided into paddocks of one hectare each. The treatments consisted of four defoliation heights (15, 30, 45 and 60 cm) in pastures of Brachiaria brizantha cv. Xaraés with three replicates each. It was used the continuos grazing method, with variable stocking rate. Forage samples collected on the plots were sent to the laboratory for separation of the botanical components, weighing and determination of dry matter, with the material collected by simulated grazing. The variables: grazing time, idle time and ruminating time were evaluated for 12 consecutive hours on days 15 and 16 February 2011, considering the morning and afternoon periods. It was used a completely randomized design. The height of the canopy significantly influenced the daily grazing time and ruminating time, with a quadratic response as a function of time of defoliation. The bite rate decreased as a function of heights studied. However the chemical composition of the material collected by simulated grazing did not differ between treatments. Xaraés grass swards grazed at around 45 cm height provide greater ease of apprehension by grazing cattle.http://www.uel.br/revistas/uel/index.php/semagrarias/editor/submission/16634Bit rate; Idleness; Rumination; Simulation of grazing |
| spellingShingle | Marco Aurélio Alves de Freitas Barbosa Letícia Maria Castro Rondineli Pavezzi Barbero Vinicius Campachi Brito Renan Lucas Miorin Rafael Mantegazza Saad Edson Luis de Azambuja Ribeiro Valter Harry Bumbieris Junior Ingestive behavior of cattle kept in Brachiaria brizantha cv. Xaraés grass managed under different grazing heights Semina: Ciências Agrárias Bit rate; Idleness; Rumination; Simulation of grazing |
| title | Ingestive behavior of cattle kept in Brachiaria brizantha cv. Xaraés grass managed under different grazing heights |
| title_full | Ingestive behavior of cattle kept in Brachiaria brizantha cv. Xaraés grass managed under different grazing heights |
| title_fullStr | Ingestive behavior of cattle kept in Brachiaria brizantha cv. Xaraés grass managed under different grazing heights |
| title_full_unstemmed | Ingestive behavior of cattle kept in Brachiaria brizantha cv. Xaraés grass managed under different grazing heights |
| title_short | Ingestive behavior of cattle kept in Brachiaria brizantha cv. Xaraés grass managed under different grazing heights |
| title_sort | ingestive behavior of cattle kept in brachiaria brizantha cv xaraes grass managed under different grazing heights |
| topic | Bit rate; Idleness; Rumination; Simulation of grazing |
| url | http://www.uel.br/revistas/uel/index.php/semagrarias/editor/submission/16634 |
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