Consulta: subjectFacets:"Beef cows"
Registros recuperados: 7
Data/hora: 09/06/2024 07:41:00

Índice de condição corporal de vacas de corte: relação entre ECC e fertilidade de vacas submetidas a protocolos de IATF.
Provedor de dados: 14
Autores: PFEIFER, L. F. M.; SILVA, S. A. de S.; RODRIGUES, W. B.; NOGUEIRA, E.
Este documento foi desenvolvido para descrever e explicar as fórmulas envolvidas no iECC e demonstrar sua aplicação nos sistemas de produção de vacas de corte.
Tipo: Comunicado Técnico (INFOTECA-E)
Palavras-chave: Escore de condição corporal (ECC); Body condition index; Vaca de Corte; Bos Indicus; Pós-Parto; Fertilidade Animal; Perda de Peso; Beef cows; Postpartum period; Animal fertility; Weight loss; Zebu.
Ano: 2021
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/1136161

Enterprise Budgets for Livestock Businesses that Use Bureau of Land Management Grazing Land
Provedor de dados: 31
Autores: Gee,   C. Kerry; Gleason,   Stephen V.; Mayhoffer,   David J.; Sutter,   Kenneth J.
Cow-calf and sheep enterprise inputs, production, costs, and returns are estimated for ranches with Bureau of Land Management grazing permits using 1982 as a base year. Budgets represent different cow and sheep herd sizes in grazing areas of the western United States.
Tipo: Working or Discussion Paper
Palavras-chave: Beef cows; Sheep costs and returns; Federal rangeland; Livestock Production/Industries.
Ano: 1986
URL: http://purl.umn.edu/113077

Enterprise Budgets for Livestock Businesses that Use National Forest Grazing Land
Provedor de dados: 31
Autores: Gee,   C. Kerry; Gleason,   Stephen V.; Mayhoffer,   David J.; Sutter,   Kenneth J.
Cow-calf and sheep enterprise inputs, production, costs, and returns are estimated for ranches with Forest Service grazing permits using 1982 as a base year. Budgets represent different cow and sheep herd sizes in National Forests and national Grasslands of United States.
Tipo: Working or Discussion Paper
Palavras-chave: Beef cows; Sheep costs and returns; Federal rangeland; Livestock Production/Industries.
Ano: 1986
URL: http://purl.umn.edu/113076

Bovine semen thermoresistance tests and their correlation with pregnancy rates after fixed-time artificial insemination
Provedor de dados: 45
Autores: Talini,R.; Kozicki,L.E.; Gaievski,F.R.; Polo,G.; Lima,L.G.F.; Santiago,J.; Segui,M.S.; Weiss,R.R.; Galan,T.G.B.
ABSTRACT The objective of the study was to determine whether or not there is a correlation between thermoresistance tests (TT) after semen thawing and pregnancy rate (PR) after fixed-time artificial insemination (FTAI). Four different TT were performed on ten samples used for AI; a rapid test (RTT) (30min / 46°C) and three slow tests (STT): STT1 (60min/38°C), STT2 (180min/38°C), and STT3 (300min/38°C). Two hundred and fifteen multiparous crossbred cows were submitted to FTAI under the following protocol: on day zero (d0) the animals received a P4 device +EB; on d7 PGF2α; on d8 P4 was removed and eCG+EC were administered; IATF was performed on d10. Three gestational diagnoses (G D) were performed on d40, d70 and d120. The mean sperm motility (%) in RTT and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Sperm motility; Casa; Pregnancy rate; Beef cows; Semen thermoresistance test.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352019000602085

Influence of parity on concentrations of enzymes, proteins, and minerals in the milk of cows
Provedor de dados: 45
Autores: Rocha,T.G.; Franciosi,C.; Nociti,R.P.; Silva,P.C.; Sampaio,A.A.M.; Fagliari,J.J.
Avaliou-se a influência do número de parições nos valores de alguns parâmetros bioquímicos e do perfil eletroforético do soro lácteo de vacas de corte. Trinta e cinco vacas da raça Canchim foram alocadas em cinco grupos: vacas de primeira lactação, segunda lactação, terceira e quarta lactações, quinta lactação e sexta lactação. As amostras de secreção láctea foram coletadas imediatamente após (dia 0) e 1, 2, 7, 15 e 30 dias após o parto. As concentrações de gamaglutamiltranferase (GGT), proteína total, cálcio, fósforo, magnésio e cálcio ionizado foram avaliadas. A separação eletroforética das proteínas foi realizada em matriz de gel de poliacrilamida (SDS-PAGE). A atividade de GGT e as concentrações de imunoglobulina G, cálcio e fósforo não foram...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Beef cows; Biochemistry; Parity; Colostrum; Milk.
Ano: 2014
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352014000100043

Relationship between clinical and postmortem evaluation in repeat breeder beef cows
Provedor de dados: 65
Autores: Ferreira,Rogério; Oliveira,João Francisco Coelho de; Antoniazzi,Alfredo Quites; Pimentel,Cláudio Alves; Moraes,José Carlos Ferrugem; Henkes,Luiz Ernani; Bordignon,Vilceu; Gonçalves,Paulo Bayard Dias.
The objective of this study was to investigate the causes of the repeat breeder syndrome comparing clinical signs and postmortem findings in beef cows. The identification of factors affecting the reproductive tract can support decisions as to whether treatment of repeat breeder cows is justifiable than culling. Since all animals were submitted to clinical examination before being slaughtered, this study has a differential approach when compared with others, where genital tracts from abattoir were examined. In this study, 130 crossbred cows and heifers that have failed to conceive after three or more services were identified, submitted to a clinical examination and blood collection for karyotyping and sent to an abattoir. postmortem examinations included...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Repeat breeder; Beef cows; Cattle; Infertility; Theriogenology.
Ano: 2008
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782008000400023

Artificial insemination system without estrous observation in suckled beef cows
Provedor de dados: 65
Autores: Borges,Luiz Felipe Kruel; Ferreira,Rogério; Siqueira,Lucas Carvalho; Bohrer,Rodrigo Camponogara; Borstmann,Jacson William; Oliveira,João Francisco Coelho de; Gonçalves,Paulo Bayard Dias.
The aim was to develop a timed artificial insemination (TAI) system in suckled beef cows. Cows (n=227), 60-80 days postpartum, received estradiol benzoate (5mg) and a vaginal device containing 250µg of medroxyprogesterone acetate (MPA; day 0). On day six, cloprostenol (125µg) and eCG (400IU) were administrated and calves were weaned for 88h. The devices were removed on day seven (BioRep group) or on day eight (TAI group). All cows of TAI group and cows of BioRep group that did not exhibit standing estrus received GnRH (100µg) on day 9. In experiment I, the follicular growth was monitored daily by transrectal ultrasound exams, from day 6 to day 9. The average size of the dominant follicle on day nine was 11.1±0.99mm (BioRep, n=7) and 11.5±0.65mm (TAI, n=7)...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Beef cows; Postpartum; TAI; MPA; Ovulation.
Ano: 2009
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782009000200028