|
|
Registro Completo |
Biblioteca(s): |
Embrapa Pantanal. |
Data corrente: |
31/05/1996 |
Data da última atualização: |
31/05/1996 |
Autoria: |
HERNANDEZ BARRETO, M.; ARMAS ARROJO, J. de; HERNANDEZ HERNANDEZ, J.; SARMIENTO SARDINA, L. J. |
Título: |
Utilizacion de dosis bajas de estrogenos sinteticos (dietiletilbestrol) para la induccion del celo en novillas mestizas (retrocruce Cebu x Holstein) impuberes, estabuladas durante el periodo de sequia. |
Ano de publicação: |
1977 |
Fonte/Imprenta: |
Centro Revista Cientifica de la Universidad Central Las Villas, v.4, n.2, p.63-72, 1977. |
Idioma: |
Espanhol |
Conteúdo: |
Para este trabajo se utilizaron 56 novillas impuberes de Retrocruce Cebu x Holstein en condiciones de estabulacion durante el periodo de sequia, con vistas a valorar la accion de Dietilestibestrol (DEB) en estos animales.Las hembras se distribuyeon en 3 grupos en funcion del tratamiento hormonal (5 mg de DEB; 10 mg de DEB y grupo Testigo). El DEB se administro por via subcutanea en una sola aplicacion. Se observo que estas novillas, presentaron una repuesta estral frente al tratamiento (67 y 63% respectivamente en los grupos tratados contra un 32% de los testigos) (P<0.01). Se obtuvo en todos los grupos un % de los celos ovulares superior al 50%, independientemente que las hembras hubieran o no recibido tratamiento hormonal. El % de gestacion logrado fue bajo en todos los casos (inferior al 45%), siendo superior en las hembras testigos. Se concluye que el DEB no ofrece respuestas positivas para el aumento de la fertilidad en este tipo de animales, a las dosis empleadas. |
Palavras-Chave: |
Bovine; Dietilestilbestrol. |
Thesagro: |
Bovino; Reprodução. |
Thesaurus Nal: |
reproduction. |
Categoria do assunto: |
-- |
Marc: |
LEADER 01763naa a2200217 a 4500 001 1788984 005 1996-05-31 008 1977 bl --- 0-- u #d 100 1 $aHERNANDEZ BARRETO, M. 245 $aUtilizacion de dosis bajas de estrogenos sinteticos (dietiletilbestrol) para la induccion del celo en novillas mestizas (retrocruce Cebu x Holstein) impuberes, estabuladas durante el periodo de sequia. 260 $c1977 520 $aPara este trabajo se utilizaron 56 novillas impuberes de Retrocruce Cebu x Holstein en condiciones de estabulacion durante el periodo de sequia, con vistas a valorar la accion de Dietilestibestrol (DEB) en estos animales.Las hembras se distribuyeon en 3 grupos en funcion del tratamiento hormonal (5 mg de DEB; 10 mg de DEB y grupo Testigo). El DEB se administro por via subcutanea en una sola aplicacion. Se observo que estas novillas, presentaron una repuesta estral frente al tratamiento (67 y 63% respectivamente en los grupos tratados contra un 32% de los testigos) (P<0.01). Se obtuvo en todos los grupos un % de los celos ovulares superior al 50%, independientemente que las hembras hubieran o no recibido tratamiento hormonal. El % de gestacion logrado fue bajo en todos los casos (inferior al 45%), siendo superior en las hembras testigos. Se concluye que el DEB no ofrece respuestas positivas para el aumento de la fertilidad en este tipo de animales, a las dosis empleadas. 650 $areproduction 650 $aBovino 650 $aReprodução 653 $aBovine 653 $aDietilestilbestrol 700 1 $aARMAS ARROJO, J. de 700 1 $aHERNANDEZ HERNANDEZ, J. 700 1 $aSARMIENTO SARDINA, L. J. 773 $tCentro Revista Cientifica de la Universidad Central Las Villas$gv.4, n.2, p.63-72, 1977.
Download
Esconder MarcMostrar Marc Completo |
Registro original: |
Embrapa Pantanal (CPAP) |
|
Biblioteca |
ID |
Origem |
Tipo/Formato |
Classificação |
Cutter |
Registro |
Volume |
Status |
URL |
Voltar
|
|
![](/consulta/web/img/deny.png) | Acesso ao texto completo restrito à biblioteca da Embrapa Gado de Leite. Para informações adicionais entre em contato com cnpgl.biblioteca@embrapa.br. |
Registro Completo
Biblioteca(s): |
Embrapa Gado de Leite. |
Data corrente: |
16/02/2017 |
Data da última atualização: |
30/01/2023 |
Tipo da produção científica: |
Artigo em Periódico Indexado |
Circulação/Nível: |
A - 1 |
Autoria: |
WALLAU, M. O.; SOLLENBERGER, L. E.; VENDDRAMINI, J. M. B.; GOMIDE, C. A. de M.; MULLENIX, M. K.; QUESENBERRY, K. H. |
Afiliação: |
Marcelo O. Wallau, University of Florida, Gainesville, FL; Lynn E. Sollenberger, University of Florida, Gainesville, FL; João M. B. Vendramini, Range Cattle Research and Education Center, Ona, FL; CARLOS AUGUSTO DE MIRANDA GOMIDE, CNPGL; M. Kimberly Mullenix, Auburn University, Auburn, AL; Kenneth H. Quesenberry, University of Florida, Gainesville, FL. |
Título: |
Performance of Limpograss Breeding Lines under Various Grazing Management Strategies. |
Ano de publicação: |
2016 |
Fonte/Imprenta: |
Crop Science, v. 56, n. 6, p. 3345-3353, 2016. |
Idioma: |
Inglês |
Conteúdo: |
Limpograss [Hemarthria altissima (Poir.) Stapf et C.E. Hubb.] is a C4, perennial, stoloniferous grass that is well adapted to poorly drained soils and grows throughout frost-free periods during winter in southern Florida. Its use has increased rapidly in recent decades, but nearly all area in cultivation is planted with one cultivar, ?Floralta?. A breeding program was initiated to develop improved alternatives to Floralta, resulting in a group of breeding lines requiring evaluation under grazing. The objective of this research was to evaluate the performance of five limpograss breeding lines (1, 4F, 10, 32, and 34) under combinations of grazing frequency and intensity. During the 2012 and 2013 growing seasons, those lines, plus Floralta, were tested at two pre-grazing canopy light interception levels (80 and 95%), that triggered the initiation of each grazing event, and two post-grazing stubble heights (20 and 30 cm). Lines 4F and 10 had greater herbage accumulation, apparent herbage harvested, and persistence than Floralta. Initiation of grazing at 80% canopy light interception resulted in more frequent grazing events, a longer grazing season, shorter pregrazing canopy height, greater leaf percentage, less herbage bulk density, and greater herbage crude protein concentration compared with 95% canopy light interception. These data support cultivar release of breeding lines 4F and 10 and suggest that persistence and efficient utilization of limpograss under rotational stocking can likely be achieved by initiating grazing at a pre-grazing canopy height of ~60 cm, well before 95% canopy light interception, and by ending grazing at a post-grazing canopy height of ~30 cm. MenosLimpograss [Hemarthria altissima (Poir.) Stapf et C.E. Hubb.] is a C4, perennial, stoloniferous grass that is well adapted to poorly drained soils and grows throughout frost-free periods during winter in southern Florida. Its use has increased rapidly in recent decades, but nearly all area in cultivation is planted with one cultivar, ?Floralta?. A breeding program was initiated to develop improved alternatives to Floralta, resulting in a group of breeding lines requiring evaluation under grazing. The objective of this research was to evaluate the performance of five limpograss breeding lines (1, 4F, 10, 32, and 34) under combinations of grazing frequency and intensity. During the 2012 and 2013 growing seasons, those lines, plus Floralta, were tested at two pre-grazing canopy light interception levels (80 and 95%), that triggered the initiation of each grazing event, and two post-grazing stubble heights (20 and 30 cm). Lines 4F and 10 had greater herbage accumulation, apparent herbage harvested, and persistence than Floralta. Initiation of grazing at 80% canopy light interception resulted in more frequent grazing events, a longer grazing season, shorter pregrazing canopy height, greater leaf percentage, less herbage bulk density, and greater herbage crude protein concentration compared with 95% canopy light interception. These data support cultivar release of breeding lines 4F and 10 and suggest that persistence and efficient utilization of limpograss under rotational stockin... Mostrar Tudo |
Palavras-Chave: |
Forage farming. |
Thesaurus NAL: |
animal production; pasture management. |
Categoria do assunto: |
F Plantas e Produtos de Origem Vegetal |
Marc: |
LEADER 02350naa a2200217 a 4500 001 2064446 005 2023-01-30 008 2016 bl uuuu u00u1 u #d 100 1 $aWALLAU, M. O. 245 $aPerformance of Limpograss Breeding Lines under Various Grazing Management Strategies.$h[electronic resource] 260 $c2016 520 $aLimpograss [Hemarthria altissima (Poir.) Stapf et C.E. Hubb.] is a C4, perennial, stoloniferous grass that is well adapted to poorly drained soils and grows throughout frost-free periods during winter in southern Florida. Its use has increased rapidly in recent decades, but nearly all area in cultivation is planted with one cultivar, ?Floralta?. A breeding program was initiated to develop improved alternatives to Floralta, resulting in a group of breeding lines requiring evaluation under grazing. The objective of this research was to evaluate the performance of five limpograss breeding lines (1, 4F, 10, 32, and 34) under combinations of grazing frequency and intensity. During the 2012 and 2013 growing seasons, those lines, plus Floralta, were tested at two pre-grazing canopy light interception levels (80 and 95%), that triggered the initiation of each grazing event, and two post-grazing stubble heights (20 and 30 cm). Lines 4F and 10 had greater herbage accumulation, apparent herbage harvested, and persistence than Floralta. Initiation of grazing at 80% canopy light interception resulted in more frequent grazing events, a longer grazing season, shorter pregrazing canopy height, greater leaf percentage, less herbage bulk density, and greater herbage crude protein concentration compared with 95% canopy light interception. These data support cultivar release of breeding lines 4F and 10 and suggest that persistence and efficient utilization of limpograss under rotational stocking can likely be achieved by initiating grazing at a pre-grazing canopy height of ~60 cm, well before 95% canopy light interception, and by ending grazing at a post-grazing canopy height of ~30 cm. 650 $aanimal production 650 $apasture management 653 $aForage farming 700 1 $aSOLLENBERGER, L. E. 700 1 $aVENDDRAMINI, J. M. B. 700 1 $aGOMIDE, C. A. de M. 700 1 $aMULLENIX, M. K. 700 1 $aQUESENBERRY, K. H. 773 $tCrop Science$gv. 56, n. 6, p. 3345-3353, 2016.
Download
Esconder MarcMostrar Marc Completo |
Registro original: |
Embrapa Gado de Leite (CNPGL) |
|
Biblioteca |
ID |
Origem |
Tipo/Formato |
Classificação |
Cutter |
Registro |
Volume |
Status |
Fechar
|
Expressão de busca inválida. Verifique!!! |
|
|