BEHAVIORAL PARAMETERS OF CULL COWS GRAZING MILLET OR SUDAN GRASS
Autor(a) principal: | |
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Data de Publicação: | 2013 |
Outros Autores: | , , , , |
Tipo de documento: | Artigo |
Idioma: | por |
Título da fonte: | Ciência animal brasileira (Online) |
Texto Completo: | https://revistas.ufg.br/vet/article/view/23613 |
Resumo: | The objective of this study was to evaluate the behavioral parameters and strategies of displacement and feeding of cull cows grazing millet or sudan grass. The treatments consisted of: pearl millet (Pennisetum americanum (L.) Leeke) or sudan grass (Sorghum bicolor cv. Sudanense). Both treatments were submitted to continuous grazing of cull cows over 63 experimental days subdivided into three periods. Using 20 Charolais x Nellore cull cows, at the average age of 8 years and average weight of 445 kg. The animals were divided into 10 paddocks, five paddocks used for each treatment comprising two cows. The behavioral assessments were carried out for 24 hours straight. The experimental design was completely randomized with two treatments and three periods. The grazing time of cows showed interaction (P = 0.0035) between treatment and period, and the shortest time for the activity in the first period on pearl millet (504 minutes) compared to the second period of that same treatment (587 minutes) and the third period on sudan grass pastures (535 minutes). The times of rumination and idling were similar between treatments; however, the idling time decreased and rumination increased with time periods. The forage species did not affect the variables related to the strategies of displacement and feeding. With the advancement of cycle pastures the number of steps per minute, stations per minute and per day decreased while the bite rate and the number of bites per day increased. The behavioral parameters of cull cows grazing sudan grass or millet are similar; however, the advancement of the vegetative cycle of these species provides changes in the behavioral pattern of the animals.KEYWORDS: bit rate; displacement strategies; grasses; grazing time; Pennisetum; Sorghum. |
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BEHAVIORAL PARAMETERS OF CULL COWS GRAZING MILLET OR SUDAN GRASSPARÂMETROS COMPORTAMENTAIS DE VACAS DE DESCARTE EM PASTAGENS DE MILHETO OU CAPIM SUDÃOPasturesestratégias de deslocamentogramíneaspennisetumsorghumtaxa de bocadotempo de pastejoThe objective of this study was to evaluate the behavioral parameters and strategies of displacement and feeding of cull cows grazing millet or sudan grass. The treatments consisted of: pearl millet (Pennisetum americanum (L.) Leeke) or sudan grass (Sorghum bicolor cv. Sudanense). Both treatments were submitted to continuous grazing of cull cows over 63 experimental days subdivided into three periods. Using 20 Charolais x Nellore cull cows, at the average age of 8 years and average weight of 445 kg. The animals were divided into 10 paddocks, five paddocks used for each treatment comprising two cows. The behavioral assessments were carried out for 24 hours straight. The experimental design was completely randomized with two treatments and three periods. The grazing time of cows showed interaction (P = 0.0035) between treatment and period, and the shortest time for the activity in the first period on pearl millet (504 minutes) compared to the second period of that same treatment (587 minutes) and the third period on sudan grass pastures (535 minutes). The times of rumination and idling were similar between treatments; however, the idling time decreased and rumination increased with time periods. The forage species did not affect the variables related to the strategies of displacement and feeding. With the advancement of cycle pastures the number of steps per minute, stations per minute and per day decreased while the bite rate and the number of bites per day increased. The behavioral parameters of cull cows grazing sudan grass or millet are similar; however, the advancement of the vegetative cycle of these species provides changes in the behavioral pattern of the animals.KEYWORDS: bit rate; displacement strategies; grasses; grazing time; Pennisetum; Sorghum.Objetivou-se com este estudo avaliar os parâmetros comportamentais e as estratégias de deslocamento e alimentação de vacas de descarte em pastagens de milheto ou capim sudão. Os tratamentos consistiram em: pastagem de milheto (Pennisetum americanum (L.) Leeke) ou pastagem de capim sudão (Sorghum bicolor cv. sudanense), ambos tratamentos submetidos ao pastejo contínuo de vacas de descarte, ao longo de 63 dias experimentais, subdividido em três períodos. Foram utilizadas 20 vacas de descarte cruza Charolês x Nelore, de idade média de 8 anos e peso vivo médio inicial de 445 kg. Os animais foram distribuídos em 10 piquetes, sendo utilizados cinco piquetes para cada tratamento comportando duas vacas. As avaliações comportamentais foram realizadas durante 24 horas ininterruptas. O delineamento experimental foi inteiramente casualizado com 2 tratamentos e 3 períodos de avaliação. O tempo de pastejo das vacas apresentou interação (P=0,0035) entre tratamento e período, sendo o menor tempo destinado à atividade no primeiro período na pastagem de milheto (504 minutos) comparado com o segundo período desse mesmo tratamento (587 minutos) e terceiro período nas pastagens de capim sudão (535 minutos). Os tempos de ruminação e ócio foram semelhantes entre os tratamentos; no entanto, o de ócio diminuiu e o de ruminação aumentou com o avanço dos períodos. As espécies de forrageiras não influenciaram as variáveis relacionadas às estratégias de deslocamento e alimentação. Com o avanço do ciclo das pastagens, o número de passos por minuto, estações por minuto e por dia diminuíram enquanto a taxa de bocado e número de bocados por dia aumentaram. Os parâmetros comportamentais de vacas de descarte em pastagens de milheto ou capim sudão são similares; no entanto, o avanço do ciclo vegetativo dessas espécies proporciona modificações no padrão comportamental dos animais.PALAVRAS-CHAVE: estratégias de deslocamento; gramíneas; Pennisetum; Sorghum; taxa de bocado; tempo de pastejo.Universidade Federal de Goiás2013-09-28info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionResearchAvaliado por paresPesquisa Científicaapplication/pdftext/htmlapplication/pdfhttps://revistas.ufg.br/vet/article/view/2361310.5216/cab.v14i3.23613Brazilian Animal Science/ Ciência Animal Brasileira; Vol. 14 No. 3 (2013); 323-331Ciência Animal Brasileira / Brazilian Animal Science; v. 14 n. 3 (2013); 323-3311809-68911518-2797reponame:Ciência animal brasileira (Online)instname:Universidade Federal de Goiás (UFG)instacron:UFGporhttps://revistas.ufg.br/vet/article/view/23613/15206https://revistas.ufg.br/vet/article/view/23613/15207https://revistas.ufg.br/vet/article/view/23613/16837Pacheco, Rangel FernandesAlves Filho, Dari CelestinoBrondani, Ivan LuizRestle, JoãoPizzuti, Luiz Angelo DamianCattelam, Jonatasinfo:eu-repo/semantics/openAccess2013-10-14T12:20:03Zoai:ojs.revistas.ufg.br:article/23613Revistahttps://revistas.ufg.br/vetPUBhttps://revistas.ufg.br/vet/oai||revistacab@gmail.com1809-68911518-2797opendoar:2024-05-21T19:55:58.596168Ciência animal brasileira (Online) - Universidade Federal de Goiás (UFG)true |
dc.title.none.fl_str_mv |
BEHAVIORAL PARAMETERS OF CULL COWS GRAZING MILLET OR SUDAN GRASS PARÂMETROS COMPORTAMENTAIS DE VACAS DE DESCARTE EM PASTAGENS DE MILHETO OU CAPIM SUDÃO |
title |
BEHAVIORAL PARAMETERS OF CULL COWS GRAZING MILLET OR SUDAN GRASS |
spellingShingle |
BEHAVIORAL PARAMETERS OF CULL COWS GRAZING MILLET OR SUDAN GRASS Pacheco, Rangel Fernandes Pastures estratégias de deslocamento gramíneas pennisetum sorghum taxa de bocado tempo de pastejo |
title_short |
BEHAVIORAL PARAMETERS OF CULL COWS GRAZING MILLET OR SUDAN GRASS |
title_full |
BEHAVIORAL PARAMETERS OF CULL COWS GRAZING MILLET OR SUDAN GRASS |
title_fullStr |
BEHAVIORAL PARAMETERS OF CULL COWS GRAZING MILLET OR SUDAN GRASS |
title_full_unstemmed |
BEHAVIORAL PARAMETERS OF CULL COWS GRAZING MILLET OR SUDAN GRASS |
title_sort |
BEHAVIORAL PARAMETERS OF CULL COWS GRAZING MILLET OR SUDAN GRASS |
author |
Pacheco, Rangel Fernandes |
author_facet |
Pacheco, Rangel Fernandes Alves Filho, Dari Celestino Brondani, Ivan Luiz Restle, João Pizzuti, Luiz Angelo Damian Cattelam, Jonatas |
author_role |
author |
author2 |
Alves Filho, Dari Celestino Brondani, Ivan Luiz Restle, João Pizzuti, Luiz Angelo Damian Cattelam, Jonatas |
author2_role |
author author author author author |
dc.contributor.author.fl_str_mv |
Pacheco, Rangel Fernandes Alves Filho, Dari Celestino Brondani, Ivan Luiz Restle, João Pizzuti, Luiz Angelo Damian Cattelam, Jonatas |
dc.subject.por.fl_str_mv |
Pastures estratégias de deslocamento gramíneas pennisetum sorghum taxa de bocado tempo de pastejo |
topic |
Pastures estratégias de deslocamento gramíneas pennisetum sorghum taxa de bocado tempo de pastejo |
description |
The objective of this study was to evaluate the behavioral parameters and strategies of displacement and feeding of cull cows grazing millet or sudan grass. The treatments consisted of: pearl millet (Pennisetum americanum (L.) Leeke) or sudan grass (Sorghum bicolor cv. Sudanense). Both treatments were submitted to continuous grazing of cull cows over 63 experimental days subdivided into three periods. Using 20 Charolais x Nellore cull cows, at the average age of 8 years and average weight of 445 kg. The animals were divided into 10 paddocks, five paddocks used for each treatment comprising two cows. The behavioral assessments were carried out for 24 hours straight. The experimental design was completely randomized with two treatments and three periods. The grazing time of cows showed interaction (P = 0.0035) between treatment and period, and the shortest time for the activity in the first period on pearl millet (504 minutes) compared to the second period of that same treatment (587 minutes) and the third period on sudan grass pastures (535 minutes). The times of rumination and idling were similar between treatments; however, the idling time decreased and rumination increased with time periods. The forage species did not affect the variables related to the strategies of displacement and feeding. With the advancement of cycle pastures the number of steps per minute, stations per minute and per day decreased while the bite rate and the number of bites per day increased. The behavioral parameters of cull cows grazing sudan grass or millet are similar; however, the advancement of the vegetative cycle of these species provides changes in the behavioral pattern of the animals.KEYWORDS: bit rate; displacement strategies; grasses; grazing time; Pennisetum; Sorghum. |
publishDate |
2013 |
dc.date.none.fl_str_mv |
2013-09-28 |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Research Avaliado por pares Pesquisa Científica |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
https://revistas.ufg.br/vet/article/view/23613 10.5216/cab.v14i3.23613 |
url |
https://revistas.ufg.br/vet/article/view/23613 |
identifier_str_mv |
10.5216/cab.v14i3.23613 |
dc.language.iso.fl_str_mv |
por |
language |
por |
dc.relation.none.fl_str_mv |
https://revistas.ufg.br/vet/article/view/23613/15206 https://revistas.ufg.br/vet/article/view/23613/15207 https://revistas.ufg.br/vet/article/view/23613/16837 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
application/pdf text/html application/pdf |
dc.publisher.none.fl_str_mv |
Universidade Federal de Goiás |
publisher.none.fl_str_mv |
Universidade Federal de Goiás |
dc.source.none.fl_str_mv |
Brazilian Animal Science/ Ciência Animal Brasileira; Vol. 14 No. 3 (2013); 323-331 Ciência Animal Brasileira / Brazilian Animal Science; v. 14 n. 3 (2013); 323-331 1809-6891 1518-2797 reponame:Ciência animal brasileira (Online) instname:Universidade Federal de Goiás (UFG) instacron:UFG |
instname_str |
Universidade Federal de Goiás (UFG) |
instacron_str |
UFG |
institution |
UFG |
reponame_str |
Ciência animal brasileira (Online) |
collection |
Ciência animal brasileira (Online) |
repository.name.fl_str_mv |
Ciência animal brasileira (Online) - Universidade Federal de Goiás (UFG) |
repository.mail.fl_str_mv |
||revistacab@gmail.com |
_version_ |
1799874788125048832 |