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| Registros recuperados: 51 | |
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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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| 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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| 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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| 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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| 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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| 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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| Ortolani,Enrico Lippi. |
| The clinical picture of sulphur (S) deficiency is described by the first time in Brazilian dairy calves. Twelve crossbred six-month-old weaned dairy calves, reared on pasture of S-deficient Brachiaria decumbens, were used. The calves were randomly assigned in two groups of six calves each to verify the influence of S supplementation on some clinical and serum biochemical variables. All animals were fed a basal-supplement mix containing macro and microlements, urea and ground corn grain added (41gS/kg) or not of S (elemental S; 1g S/kg), for six months. At the end of the experiment, the S-supplemented calves had higher mean body weight (p < 0.01), body condition score (p < 0.016), serum inorganic sulphate concentration (p < 0.001) and serum albumin... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Sulphur; Sulphur deficiency; Calves; Brachiaria decumbens; Brazil. |
| Ano: 2001 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782001000200011 |
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| 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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| 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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| Saalfeld,Mara Helena; Pereira,Daniela Isabel Brayer; Valente,Júlia de Souza Silveira; Borchardt,Jéssica Lopes; Weissheimer,Christiano Fanck; Gularte,Márcia Arocha; Leite,Fábio Pereira Leivas. |
| ABSTRACT: Efficient handling programs that provide high quality colostrum in adequate amounts to dairy farm calves are needed to assure their health and survival. Replacers (or milk substitutes) often become necessary when colostrum presents inadequate quality, or in order to break the cycle of infectious disease transmission. In this study we aimed to assess the effect of anaerobic fermentation processing (colostrum silage) on bacterial that represent interest to animal health. Colostrum samples were inoculated with cultures of Brucella abortus , Escherichia coli , Leptospira interrogans serovar Copenhageni , Mycobacterium bovis , Salmonella Enteritidis , Salmonella Typhimurium , Staphylococcus aureus , and Bacillus cereus and then subjected to... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Colostrum silage; Lactic acid bacteria; Calves; Milk substitutes. |
| Ano: 2016 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782016001202152 |
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| Zapata Madrigal, Cristóbal. |
| Con el propósito de evaluar el comportamiento del ternero suplementado con Vitafert, bajo el sistema de doble propósito, se realizaron dos Etapa. La primera Etapa fue del 20 de febrero al 20 de abril y la segunda del 21 de Junio al 21 de Agosto de 2010, se evaluó el efecto del probiotico (Vitafert) en terneros pre-destete; Etapa I, se utilizaron 18 terneros con un peso vivo promedio de 71.3 ±38 kg. Etapa II, se utilizaron los mismos animales con peso promedio de 87.5±49 Kg. Distribuidos en dos tratamientos, T1: Pastoreo + Vitafert + Suplemento y T2: Pastoreo + Suplemento. El Vitafert se proporcionó diariamente vía oral a razón de 5 ml por kg-1PV-1. Para el análisis de los datos se utilizó un diseño de bloques completos al azar, bajo un arreglo factorial... |
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Palavras-chave: Lactobacilos; Vitafert; Terneros; Doble propósito; Etapa; Calves; Double intention; Stage; Producción Agroalimentaria en el Trópico; Maestría. |
| Ano: 2011 |
URL: http://hdl.handle.net/10521/581 |
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| CAMPOS, O. F. de; LIZIERE, R. S.; RIBEIRO, A. C. de C. L.. |
| Esta publicação reúne a experiência dos autores no manejo diário de bezerros de rebanhos leiteiros. E/a procura descrever o comportamento desses animais, listando alguns sinais por eles emitidos, e seus possíveis significados. O conhecimento desses sinais é fundamental para permitfr comunicação entre o bezerro e a pessoa que está constantemente em contato com ele, isto é, para que ambos faíem a mesma língua. O objetivo final é reduzir a perda de animais jovens e os gastos com medicamentos na propriedade, possibilitando que o indivíduo perceba que alguma coisa está errada com o bezerro e, assim, possa se antecipar e tomar as decisões mais corretas. Este trabalho destina-se, principaímente, aos agentes de extensão rural, profissionais da assistência técnica... |
| Tipo: Folhetos |
Palavras-chave: Bezerros: Criacao; Calves. |
| Ano: 1998 |
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/592936 |
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| Registros recuperados: 51 | |
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