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Registros recuperados: 43
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Alimentacao e manejo de bezerras de reposicao em rebanhos leiteiros. Infoteca-e
CAMPOS, O. F. de; LIZIEIRE, R. S..
bitstream/item/142992/1/2029.pdf
Tipo: Fôlder / Folheto / Cartilha (INFOTECA-E) Palavras-chave: Bovino de leite; Bezerras; Feeding; Management.; Alimentação; Manejo.; Calves; Dairy cattle..
Ano: 1995 URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/591579
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Association between heart rate, heart rate variability, cortisol, glucose and electrolytes in healthy newborn calves Arq. Bras. Med. Vet. Zootec.
Quevedo,D.A.C.; Lourenço,M.L.G.; Bolaños,C.A.D.; Takahira,R.K.; Oba,E.; Alfonso,A.; Chiacchio,S.B..
ABSTRACT This study aims at evaluating the effects of electrolytes, glucose and cortisol levels over heart rate (HR) and heart rate variability (HRV) in healthy newborn calves. Seventeen healthy Holstein calves were evaluated during their first month of life, and the plasma concentrations of glucose, cortisol, calcium, magnesium, inorganic phosphorus, sodium and potassium were analyzed. HRV indexes were determined in the time and frequency domains through the analysis of neonatal electrocardiogram recordings. In the first day, low blood levels of phosphorus presented a strong correlation with the HR and the increased high-frequency components of HRV. The plasma concentrations of magnesium decreased significantly throughout the 35 days, revealing a positive...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Calves; Electrolytes; Glucose; Cortisol; Heart rate variability.
Ano: 2019 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352019000601922
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Avaliacao da deficiencia subclínica de zinco em vacas de cria e a relacao com a higidez de seus bezerros. Infoteca-e
MORAES, S da S.; NICODEMO, M. L. F.; VAZ, E. C.; PIRES, P. P.; CATANANTE, M. C.; THIAGO, L. R. L. de S.; VIEIRA, J. M.; FONSECA, E. M..
De um modo geral, as concentracoes de zinco nas braquiarias sao bastante baixas, nao atendendo as necessidades de bovinos em pastejo na maioria das categorias. As vacas de cria formam a categoria do rebanho mais predisposta a esse tipo de deficiencia, por seus elevados requisitos nutricionais, ao tempo que permanecem no rebanho, e por serem destinadas a elas geralmente as piores areas de pastagens. Resultados de analises de forrageiras nativas e cultivadas das areas de cerrado, realizadas no laboratorio da Embrapa Gado de Corte, demonstraram que 90% das amostras apresentaram teores de Zn abaixo do nível considerado minimo (20 ppm) para um bom desempenho animal. O principal objetivo e evidenciar a relacao entre a suplementacao de zinco das vacas e a...
Tipo: Comunicado Técnico (INFOTECA-E) Palavras-chave: Bovino de corte; Mineral deficiencies.; Bezerro; Deficiência Mineral; Sanidade Animal; Vaca; Zinco.; Animal health; Beef cattle; Cows; Calves; Zinc..
Ano: 2001 URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/325280
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Avaliação da reação em cadeia da polimerase e do isolamento bacteriológico convencional na detecção de Salmonella Dublin em amostras de fezes de bezerros infectados experimentalmente Arq. Bras. Med. Vet. Zootec.
Silva,D.G.; Silva,D.R.; Silva,P.R.L.; Cícero,E.A.S.; Ferraz,A.L.J.; Lemos,M.V.F.; Fagliari,J.J..
The efficiency of the Polymerase Chain Reaction (PCR) combined with selective enrichment broth was compared with the standard microbiological techniques for detection of Salmonella Dublin in fecal samples of 10 to 15-days-old Holstein calves, experimentally infected with 10(8) CFU of Salmonella Dublin. Seventy-six fecal samples were analyzed using PCR associated with selenite cystine (SC) and Muller-Kauffmann tetrathionate (TMK) broths and standard microbiological techniques. Regardless of the selective enrichment broth used, the standard microbiological techniques were significantly better than PCR in detection of positive samples of Salmonella Dublin. However, the simultaneous use of both techniques provided detection of a larger number of positive...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Calves; Feces; Salmonella Dublin; PCR; Culture.
Ano: 2010 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352010000300035
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Bispectral index assessment in calves subjected to the continuous infusion of propofol combined with fentanyl administration Ciência Rural
Deschk,Mauricio; Trein,Thomas Alexander; Wagatsuma,Juliana Tessália; Silva,Guilherme Lopes da; Araújo,Marcelo Augusto de; Games,Bruna de Moraes Martins; Alcindo,Jefferson Filgueira; Rodrigues,Celso Antônio; Santos,Paulo Sergio Patto dos.
ABSTRACT: The aim of this study was to evaluate the bispectral index (BIS) effects in calves through continuous infusion of propofol with or without fentanyl. Eight Holstein male calves (ages from six to twelve months old) with an average weight of 123±18kg were used. All animals participated in both groups, always keeping a minimum interval of one week between the anesthetic procedures; the calves were randomly distributed between groups. Anesthesia was induced with an intravenous (IV) dose of propofol of 5mg kg-1 in control group (GP) or with propofol (4mg kg-1) associated with IV fentanyl 0.001mg kg-1(GF). All the calves were positioned in right lateral recumbency and were allowed to spontaneously breathe room air. Subsequently, the anesthesia was...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Calves; Ruminants; Balanced anesthesia; Anesthetic monitoring.
Ano: 2017 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782017001100602
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Changes of Progesterone and Endothelin Concentrations in the Peripheral Plasma of Female Calves and Cycling Cows: Effects of PGF2α Injection OAK
OHTANI, Masayuki; OKI, Naoko; TANIMURA, Miyune; KOBAYASHI, Shu-ichi; ACOSTA, Tomas J.; HAYASHI, Kanako; MIYAMOTO, Akio; 宮本, 明夫.
It is well known that an injection of prostaglandin F2α (PGF2α) or its analogue during the mid luteal phase of the estrous cycle induces a rapid decrease in plasma progesterone (P4) concentration, followed by luteolysis in the cow. There is evidence that a potent vasoactive peptide, endothelin-1 (ET-1), is produced in the bovine corpus luteum (CL), and that it is directly involved in luteolysis. We previously found that ET-1 concentrations in the peripheral plasma increase during the period of luteolysis and ovulation in cows. However, it is not clear whether the elevation of peripheral plasma ET-1 concentration observed during luteolysis and ovulation originates exclusively from the ovary and/or CL. Such a profile of plasma ET-1 concentration may be...
Palavras-chave: Endothelin; Progesterone; Plasma; Calves; Cows.
Ano: 2001 URL: http://ir.obihiro.ac.jp/dspace/handle/10322/2973
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CHAPA, BEEF COW/CALF HEALTH AND PRODUCTIVITY AUDIT, PART III: BEEF COW/CALF HEALTH MANAGEMENT AgEcon
Dargatz, David.
As part of the National Animal Health Monitoring System (NAHMS ), USDA:APHIS:Veterinary Services conducted a national study of beef production, the Beef Cow/Calf Health and Productivity Audit (CHAPA). This study was designed to provide both participants and the industry with information on cow/calf health, productivity, and management practices. Data for Part III: Beef Cow/Calf Health & Health Management were collected by federal and state veterinary officers (VMO's) in 18 of the largest cow/calf producing states between January 4 and February 28, 1993. These 18 states represented 70 percent of the U.S. beef cow inventory. Participating producers had five or more beef cows or beef replacement heifers and fifty percent or more of their 1992 calf crop...
Tipo: Report Palavras-chave: NAHMS; Epidemiology; Beef cattle; Calves; Breeding; Calving; Calf crop; Replacement heifers; Economics; Sales; Disease; Parasites; Pinkeye; Scours; Livestock Production/Industries.
Ano: 1994 URL: http://purl.umn.edu/32748
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CHAPA, BEEF COW/CALF HEALTH AND PRODUCTIVITY AUDIT, PART IV: BEEF COW/CALF BREEDING MANAGEMENT AgEcon
Dargatz, David.
As part of the National Animal Health Monitoring System (NAHMS ), USDA:APHIS:Veterinary Services conducted a national study of beef production, the Beef Cow/Calf Health and Productivity Audit (CHAPA). This study was designed to provide both participants and the industry with information on cow/calf health, productivity, and management practices. The National Agricultural Statistics Service (NASS) collaborated with USDA:APHIS:VS to select a producer sample that was statistically designed to provide inferences about the nation's cow/calf population. Data for Part IV: Beef Cow/Calf Breeding Management were collected by federal and state veterinary officers (VMO's) in 18 of the largest cow/calf producing states between July 1 and July 30, 1993. These 18 states...
Tipo: Report Palavras-chave: NAHMS; Epidemiology; Beef cattle; Calves; Breeding; Mortality; Grazing; Trichomonas fetus; Vaccination; Deworming; Palpation; Livestock Production/Industries.
Ano: 1994 URL: http://purl.umn.edu/32753
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CHAPA, BEEF COW/CALF HEALTH AND PRODUCTIVITY AUDIT, PART V: QUALITY ASSURANCE PROFILE AgEcon
Dargatz, David.
As part of the National Animal Health Monitoring System (NAHMS ), USDA:APHIS:Veterinary Services conducted a national study of beef production, the Beef Cow/Calf Health and Productivity Audit (CHAPA). This study was designed to provide both participants and the industry with information on cow/calf health, productivity, and management practices. The National Agricultural Statistics Service (NASS) collaborated with USDA:APHIS:VS to select a producer sample that was statistically designed to provide inferences about the nation's cow/calf population. Data for Part V: Quality Assurance Profile were collected by federal and state veterinary officers (VMO's) in 18 of the largest cow/calf producing states between January 1 and January 31, 1994. The average...
Tipo: Report Palavras-chave: NAHMS; Epidemiology; Beef cattle; Calves; Weaning; Value; Economics; Disease; Scours; Calf crop; Mortality; Calving problems; Parasites; Livestock Production/Industries.
Ano: 1994 URL: http://purl.umn.edu/32767
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Cloning of the transmembrane glycoproteins G and F from a Brazilian isolate of bovine respiratory syncytial virus in a prokaryotic system Arq. Bras. Med. Vet. Zootec.
Silva,L.H.A.; Cardoso,K.C.; Silva,M.J.; Spilki,F.R.; Arns,C.W..
The aim of this work was the cloning of those transmembrane glycoproteins G and F from an isolate bovine respiratory syncytial viruses (BRSV) - a Brazilian isolate of BRSV, named BRSV-25-BR in previous studies, in a prokaryotic system to proceed the sequencing of larger genomic fragments. The nucleotide substitutions were confirmed and these clones may also be used in further studies regarding the biological effects of those proteins in vitro and in vivo.
Tipo: Info:eu-repo/semantics/article Palavras-chave: Bovine respiratory syncytial virus; Calves; Glycoproteins G and F.
Ano: 2011 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352011000300003
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Comparação dos caldos selenito cistina, tetrationato Muller-Kauffmann e Rappaport-Vassiliadis no isolamento de Salmonella Typhimurium Arq. Bras. Med. Vet. Zootec.
Ávila,L.G.; Silva,D.G; Fagliari,J.J..
Three selective enrichment broths - selenite cystine (SC), Muller-Kauffmann tetrathionate (MKT) and Rappaport-Vassiliadis (RV) - were compared, for Salmonella Typhimurium isolation from rectal swabs of a calf experimentally infected. The bacteriological procedure involved pre-enrichment in Hajna-GN broth (only for the samples inoculated in RV broth), selective enrichment (SC, MKT and RV broths), culture in modified brilliant green agar (BGA), presumptive biochemistry tests (using triple-sugar-iron agar and lysine-agar) and slide agglutination test with poli-O and poli-H Salmonella antisera. SC and MKT broths were more efficient in the isolation of Salmonella Typhimurium (12 positive samples), whereas RV broth had a lower efficiency in the microbiological...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Calves; Feces; Selective enrichment broth; Salmonella typhimurium; Bezerro; Fezes; Meio de enriquecimento seletivo; Salmonella Typhimurium.
Ano: 2012 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352012000300035
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Conditioning and aversion to toxic Solanum bonariense ("naranjillo") leaves in calves Ciência Rural
Ruiz-Santos,Paul; Pfister,James Alan; Verdes,José Manuel.
ABSTRACT: Solanum bonariense is a perennial poisonous shrub that induces cerebellar cortical degeneration when eaten by cattle. The aim of this research was to outline a protocol to induce a conditioned aversion to this plant. During the pre-conditioning period ten calves (126±12kg BW) were maintained at half of their normal energy intake with lucerne hay and water ad libitum, to stimulate consumption of S. bonariense. Every two days they were offered 100g ofS. bonariense leaves for 5 minutes. Calves began eating the target plant on day 10 and consumed all the plant material on day 12. The conditioning period began after each calf consumed the entire amount of S. bonariense for three consecutive sessions. Five animals were randomly selected for...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Solanum bonariense; Poisonous plants; Conditioned taste aversion; Calves.
Ano: 2016 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782016000400669
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Congenital bilateral patellar luxation in a Jersey calf MV&Z
Benesi, FemandoJosé; Silva, Luis Cláudio Lopes Correia da; Coelho, Clarisse Simões; RioS, Rooald Leite; de Alvarenga, José.
An l8-day-old Jersey calf was admitted to the Veterinary Hospital of the School of Veterinary Medicine of the University of São Paulo. The owner reported that the calf, born without assistance, had been unable to get up since birth. Upon clinical exam, the animal was unable to walk when the stifle was maintained in marked flex ion. Lateral displacement of the patellae was detected upon palpation of the hind limbs. Radiographic exanimation confirmed the diagnosis of congenital bilateral luxation of the patellae. The results of femoral sulcoplasty, a surgical procedure used to deepen the patellar groove, were unsuccessful. Euthanasia was recommended.
Tipo: Info:eu-repo/semantics/article Palavras-chave: Calves; Lateral luxation; Patella Becerros; Luxación rotular; Rótula bezerros; Luxação patelar; Patela.
Ano: 2002 URL: http://www.revistamvez-crmvsp.com.br/index.php/recmvz/article/view/3295
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Contribution to the study of diarrhea etiology in neonate dairy calves in São Paulo state, Brazil Braz. J. Vet. Res. Anim. Sci.
Langoni,Helio; Linhares,Antonio Carlos; Avila,Fernando Antonio de; Da Silva,Aristeu Vieira; Elias,Acacia Orieth.
Two hundred and three samples of feces of calves aged less than 30 days old from both sexes and from different properties and regions of the state of São Paulo were examined in the period of two years. Bacterial cultures were carried out in bovine 10% bloodagar and Levine mediums, incubated for up to 96 hours in aerobic conditions at 37°C, with the observation of colonies and morphological and biochemical study to characterize isolated microorganisms, or other tests, when pertinent. ELISA was performed for the Rotavirus research. The Cryptosporydium spp was surveyed and its parasitological examination was made. Results revealed the involvement of several enteropathogens alone and associated. Rotavirus was found in 51 (25.1%) samples, being 58.8% alone and...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Diarrhea; Calves; Etiology; Rotavirus; Cryptospodium.
Ano: 2004 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-95962004000500004
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Cost and Benefit Analysis of a Preconditioning Feeder Calf Program AgEcon
Donnell, Jeri; Ward, Clement E..
Objectives were twofold: Determine key factors influencing preconditioning cost and returns; and determine the premium for age and source verified, preconditioned calves sold at a public livestock market. Data provided by the Samuel Roberts Noble Foundation show preconditioning returns depend significantly on number of days preconditioned, average daily gain, and cost of vaccinations, hay, feed, and mineral. Noble Foundation cooperators received a premium for age and source verified, preconditioned feeder cattle when sold at market. Significant coefficients averaged across five sales conclude that Noble Foundation management practices receive a $2.49/cwt premium when compared to all other cattle sold at market.
Tipo: Conference Paper or Presentation Palavras-chave: Cattle; Calves; Preconditioning; Prices; Costs; Age and source verification; Marketing.
Ano: 2008 URL: http://purl.umn.edu/42303
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Criação de bezerro leiteiro na Amazônia. Infoteca-e
GONÇALVES, C. A.; RODRIGUES FILHO, J. A..
bitstream/item/61186/1/CPATU-Doc112.pdf
Tipo: Documentos (INFOTECA-E) Palavras-chave: Brasil.; Bezerro Leiteiro; Criação.; Animal husbandry; Amazonia; Calves; Livestock..
Ano: 1998 URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/376705
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DESMAMA precoce de bezerros de origem leiteira. Infoteca-e
bitstream/item/38421/1/Desmama-precoce.pdf
Tipo: Fôlder / Folheto / Cartilha (INFOTECA-E) Palavras-chave: Bezerro de leite.; Desmama Precoce.; Calves; Dairy cattle; Weaning..
Ano: 1999 URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/377239
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Detection of serum amyloid-A concentration in the calf clinically diagnosed with pneumonia, enteritis and pneumoenteritis Ciência Rural
Kabu,Mustafa; Elitok,Bulent; Kucukkurt,Ismail.
ABSTRACT: The aim of this study is to determine serum amyloid-A (SAA) concentration in the cases of pneumonia, pneumoenteritis, and enteritis which are frequently encountered in calves in veterinary medicine. Although a great deal of experimental studies has been conducted in this field, studies on naturally infected calves are quite few. Eighty calves at the age of 0-6 months were used in the study and the calves were divided into four groups. Due to the clinical examination, the calves diagnosed with pneumonia (Group P; n=20), with pneumoenteritis (Group PE; n=20) and with enteritis (Group E; n=20) formed the disease group as the healthy ones formed the control (Group C; n=20) group. After the body temperatures of all calves were taken, blood samples...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Serum amyloid-A; Calves; Pneumonia; Enteritis; Pneumoenteritis.
Ano: 2016 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782016000200293
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Diurnal ingestive behavior of Holstein calves reared in different systems: feedlot or pasture Animal Sciences
Segabinazzi, Luciane Rumpel; Universidade Tecnológica Federal do Paraná; Menezes, Luis Fernando Glasenapp de; Universidade Federal de Santa Maria; Silva, Carlos Eduardo Kruger da; Universidade Tecnológica Federal do Paraná; Martinello, Clederson; Universidade Tecnológica Federal do Paraná; Boito, Bruna; Universidade Tecnológica Federal do Paraná; Molineti, Marcos Luis; Universidade Tecnológica Federal do Paraná.
This study evaluated the ingestive behavior of Hostein calves kept in two husbandry systems: feedlot or pasture. We examined the ingestive behavior of 11 male non-castrated calves, with average initial age of 75 days, six of which were individually penned, consuming corn silage and concentrate-based diet at a ratio of 40:60 (on a DM basis), and the remainder, on pearl millet pasture (Pennisetum americanum) receiving concentrate supplementation at 1.0% body weight. Evaluations were held from November to February, from 8:00 am to 6:00 pm. Feedlot calves stay longer (p < 0.05) in idle, both in lying and standing positions, while animals on pasture spent more time in eating and ruminating activities. Confined animals performed a higher number of daily...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Ingestive efficiency; Idleness; Rumination; Calves.
Ano: 2014 URL: http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/22653
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Dose única de zinco como fator moderador do estresse metabólico na desmama de bovinos de corte. Infoteca-e
MORAES, S da S.; THIAGO, L. R. L. de S.; MACEDO, M. C. M.; TORRES JUNIOR, R. A. de A..
Nos registros de fazendas de gado de corte, é notório que as maiores perdas no rebanho ocorrem no terço inicial da vida do animal. Este fato possivelmente está associado com o manejo de matrizes em pastos de baixo valor nutricional, que somado a uma suplementação mineral inadequada, predispõem os bezerros a uma deficiência subclínica de zinco (Zn). O resultado é que os bezerros produzidos nessa situação normalmente são fracos e portadores de distúrbios nutricionais que, além de influenciar os demais estados mórbidos, os tornam mais susceptíveis a doenças resultantes de um estresse prolongado. O estresse acelera o consumo de Zn e a principal conseqüência da alteração metabólica é a falta de apetite e depressão da resposta imune aos agentes agressores. A...
Tipo: Comunicado Técnico (INFOTECA-E) Palavras-chave: Bovino de corte; Estresse.; Bezerro; Desmama; Stress; Zinco.; Calves; Beef cattle; Zinc.; Weaning.
Ano: 2002 URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/325572
Registros recuperados: 43
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