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| Registros recuperados: 46 | |
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| 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... |
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Palavras-chave: Endothelin; Progesterone; Plasma; Calves; Cows. |
| Ano: 2001 |
URL: http://ir.obihiro.ac.jp/dspace/handle/10322/2973 |
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| 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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| 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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| 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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| 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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| 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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| 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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| SANTOS,DAIANE S. DOS; BOITO,JHONATAN P.; KLAUCK,VANDERLEI; REIS,JOÃO H. DOS; GEBERT,ROGER R.; GLOMBOWSKY,PATRÍCIA; BIAZUS,ANGELISA H.; BOTTARI,NATHIELI B.; SOUSA,REJANE S.; MACHADO,GUSTAVO; LEAL,MARTA L.R.; BALDISSERA,MATHEUS D.; BERWANGER,JEAN C.; SILVA,ALEKSANDRO S. DA. |
| Abstract: The aims of this study were to investigate whether treatments with zinc edetate (Zn) and diphenyl diselenide ((PhSe)2) enhance performance, immune responses, protein metabolism, and oxidant/antioxidant status in calf serum and muscle. Animals were divided into four groups (n=6 each): control (without supplementation), and groups supplemented on days 50 and 70 of life with (PhSe)2, Zn, and a combination of (PhSe)2 and Zn. Animals treated with (PhSe)2 gained more weight by experimental day 220 than did the control group, but there was no difference by the end of the experiment (day 300). The absolute number of leukocytes and lymphocytes increased in groups Zn and (PhSe)2+Zn on day 20 of experiment, but decreased on day 40 in groups (PhSe)2, and... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Calves; Zinc edetate; (PhSe)2; Animal health. |
| Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652019000100807 |
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| VOLPATO,ANDREIA; CRECENCIO,REGIANE B.; TOMASI,THAINÃ; GALLI,GABRIELA M.; GRISS,LUIZ GUSTAVO; SILVA,ANIÉLEN D. DA; SCHETINGER,MARIA ROSA C.; SCHOGOR,ANA LUIZA B.; BALDISSERA,MATHEUS D.; STEFANI,LENITA M.; SILVA,ALEKSANDRO S. DA. |
| Abstract: The aim of this study was to evaluate whether the use phytogenic as feed additive of Holstein calves could exert beneficial effects on animal health and performance. Thirty newborn calves were randomly divided into two groups (control and treated), and the treated consisted of 10 g of the phytogenic product diluted in milk once a day for 30 days. Blood and fecal samples were collected, and fecal score was performed daily in order to determine the occurrence of diarrhea. Treated calves showed higher hematocrit on days 45 and 60 of life. Serum levels of urea, total proteins, globulins and glucose were lower in the treated group on day 60 of life, while triglycerides were lower on days 15 and 60 of life. Serum glutathione S-transferase activity was... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Feed; Metabolism; Calves; Oils; Nutrition; Animal health. |
| Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652019000700804 |
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| Ferreira,J.J.; Ruas,J.R.M.; Macedo,G.A.R.; Marcatti Neto,A.; Queiroz,D.S.; Silva,E.A.. |
| ABSTRACT Forty eight crossbred calves, 24 males and 24 females, with weight and age of 203.6±3.7kg and 11.8±1.0 months were allotted to the following treatments: MT- mineral salt ad libitum and sugar cane mixed with 10g kg-1 mixture of urea and ammonium sulfate in a 9:1 proportion; MA - sugar cane mixed with 16g kg-1 of a concentrate of urea (550g kg-1), ammonium sulfate (60g kg-1) and minerals (390g kg-1); SU - sugar cane mixed with 50g kg-1 of a concentrate of soybean meal (830g kg-1), urea (52g kg-1) and minerals (118g kg-1) and MC - corn silage mixed with 10g kg-1 of a concentrate of urea (500g kg-1), ammonium sulfate (50g kg-1) and minerals (450g kg-1). Minerals mixed with sugar cane (MA) resulted in greater weight gain (0.258 x 0.188kg d-1) for... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Calves; Corn silage; Minerals; Sugar cane; Weight gain. |
| Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352019000501677 |
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| 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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| 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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| 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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| 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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| Salvadori,Márcia Regina; Valadares,Geórgio Freesz; Leite,Domingos da Silva; Blanco,Jesús; Yano,Tomomasa. |
| Two hundred and five Escherichia coli strains isolated from calves with diarrhea from mid-western Brazil were screened for the presence of virulence factors associated with bovine colibacillosis. One hundred and two (49.8%) of the E. coli strains produced toxins: Shiga toxins 1 (9.7%) and 2 (6.3%), a-hemolysin (9.7%), enterohemolysin(6.8%), Cytotoxic Necrotizing Factors type 1 (0.5%), and type 2 (4.4%), enterotoxins LT-II (8.3%) and STa (3.9%). No strain produced enterotoxin LT-I. Fimbrial adhesins F5 and F17 were produced by 7.3% and 4.8% of the strains, respectivly, and none expressed F41. Seven strains (3.4%) possessed the gene eae and belonged to serotypes O26:H-; O111:H- and O118:H16. These results suggest that calves in Brazil may be an important... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Calves; Diarrhea; E. coli; Virulence factors. |
| Ano: 2003 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822003000300009 |
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| Azevedo da Cunha Filho,Nilton; Oliveira,Plínio Aguiar de; Oliveira,Fernando Caetano de; Pappen,Felipe Geraldo; Aguiar,Cintia Lidiane Guidotti; Santos Junior,Alceu Gonçalves dos; Costa-da-Silva,André Luis; Leite,Fabio Pereira Leivas; Farias,Nara Amélia da Rosa. |
| ABSTRACT: This study was conducted at a beef cattle breeding farm in the far southern region of Brazil. The birth of a calf with unilateral corneal opacity was immediately reported to the Laboratory of Parasitology, in the Universidade Federal de Pelotas, Rio Grande do Sul, Brazil; blood was collected from the cow and calf before colostrum intake. The umbilical cords from this calf and from six other healthy animals were collected. Serological examination, utilizing an indirect fluorescent antibody test, was done using a cut-off point of 1:100. Polymerase chain reaction (PCR) was also performed using the umbilical cord samples. Serological tests showed that the calf was positive for Neospora caninum at birth, with a titer of 1:1600; a titer of 1:3200 was... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Neospora caninum; Calves; Umbilical cord; Bovine. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782017000700501 |
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| Registros recuperados: 46 | |
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