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| Registros recuperados: 32 | |
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| Pavel Kic. |
| Milking is a key operation on dairy farms. The capacity and function of milking parlor influences production conditions (time of operations, needs of labor, total costs), so actually it affects the efficiency of the whole dairy farm. This paper presents a structure and principal parts of mathematical model which was created with the aim to enable to farmers and designers to choose suitable type of milking parlor for specific farm conditions. Three principal questions important for optimization of milking parlor are: technical parameters, indicators of labor productivity and economic criteria. The model structure was created with the aim to find the answer to all of them. The model includes in calculation main parameters of typical arrangements of milking... |
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Palavras-chave: Farm; Cows; Equipment; Labor productivity; Specific costs; Czech Republic. |
| Ano: 2015 |
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/3138 |
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| Kic, Pavel. |
| Milking is a key operation on dairy farms. The capacity and function of milking parlor influences production conditions (time of operations, needs of labor, total costs), so actually it affects the efficiency of the whole dairy farm. This paper presents a structure and principal parts of mathematical model which was created with the aim to enable to farmers and designers to choose suitable type of milking parlor for specific farm conditions. Three principal questions important for optimization of milking parlor are: technical parameters, indicators of labor productivity and economic criteria. The model structure was created with the aim to find the answer to all of them. The model includes in calculation main parameters of typical arrangements of milking... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Farm; Cows; Equipment; Labor productivity; Specific costs; Czech Republic. |
| Ano: 2015 |
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/3138 |
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| Gil,S.; Hevia,S.; Dallorso,M.; Resnizky,S.. |
| A deficiência de selênio já foi identificada pela medição da atividade da enzima glutationa de peroxidase no sangue de animais (vacas) criados em certas regiões do Pampa Úmido, mais especificamente na cidade de Nueve de Julio (Buenos Aires - Argentina). Em trabalho anterior, a análise de ativação neutrônica confirmou esses baixos níveis de selênio em uma determinada fazenda de cria para gado de corte. Neste trabalho, foram analisados os níveis de selênio no solo, na forragem e no plasma dos animais do mesmo estabelecimento. A população analisada (n=60) apresentou níveis de selênio abaixo do normal (30,1 ± 4,6µg/ml). De maneira semelhante, a concentração de selênio da forragem consumida - matéria seca igual a 30% - proveniente de uma área de baixada do... |
| Tipo: Info:eu-repo/semantics/other |
Palavras-chave: Selenium; Deficiency; Cows; Neutron activation analysis. |
| Ano: 2004 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352004000200018 |
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| Macêdo,A.A.M.; Oliveira,J.M.B.; Silva,B.P.; Borges,J.M.; Soares,L.B.F.; Silva,G.M.; Santos,S.B.; Mota,R.A.; Pinheiro-Júnior,J.W.. |
| ABSTRACT The objective of this study was to conduct an investigation of Mycoplasma bovigenitalium and Ureaplasma diversum infections in cattle in the microregion of the Ipanema Valley, state of Pernambuco, Brazil. Vaginal swabs were collected from 355 breeding cows in reproductive age and were analyzed by multiplex PCR (mPCR) and culture. An epidemiological investigation of risk factors was performed for Mollicutes. mPCR analysis showed that, 9.29% (33/355) of the cows were positive for M. bovigenitalium and 21.69% (77/355) for U. diversum; coinfection was observed in 2.81% (10/355) of the cows. The microbiological isolation showed, 81.81% (27/33) of Mycoplasma spp. and 24.67% (19/77) of Ureaplasma spp.. The risk factors related to Mollicutes infection... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: MPCR; Mollicutes; Cows; Risk factors; Ipanema valley. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352018000601798 |
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| LANGONI,Helio; ICHIHARA,Sílvio Massaru; SILVA,Aristeu Vieira da; PARDO,Renata Bonini; TONIN,Flávia Bechelli; MENDONÇA,Lia Jeanne Pereira; MACHADO,José Aparecido Dorta. |
| Brucellosis is a chronic zoonosis that plays an important role in Public Health. Considering the lack of data in Brazil regarding its presence in raw milk and non-pasteurized dairy products, we determined the presence of brucellae in milk from brucellosis positive animals. The slide agglutination test (SAT), tube agglutination test (TAT) and TAT treated with 2-mercaptoethanol were used to identify positive animals in studied herds. For 3 days, 300 ml milk samples/cow (75 ml/teat) were collected from all productive quarters of the positive animals. These were mixed and centrifuged. Part of the pellet and of the supernatant were inoculated in Farrel and Brodie-Sinton (BS) media supplemented with antimicrobial agents. The inoculated plates and tubes were... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Milk; Brucella abortus; Cows; Brucellosis. |
| Ano: 2000 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-95962000000600004 |
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| Silva,Francielle Gibson da; Freitas,Julio Cesar de; Anzai,Eleine Kuroki; Hashimoto,Vanessa Yumi; Giraldi,Nilson; Delbem,Ádina Cléia B.; Bracarense,Ana Paula F.R.L.; Reis,Antônio Carlos F. dos; Vasconcellos,Silvio Arruda. |
| The objective of this trial was to detect leptospires in fragments of kidney, liver and uterus of 96 cows with unknown sanitary status, randomly chosen at slaughter in Paraná, Brazil. All 96 urine samples were submitted to direct examination using dark field microscopy. Positive samples in the direct examination and all kidney, liver and uterus fragments were cultured in EMJH modified medium and Tween 80/40/LH. Sections cut of kidney, liver and uterus were stained by Hematoxylin-Eosin (HE) and indirect immunoperoxidase with hyperimmune serum against serovar Hardjo (Hardjoprajitno) and strain Londrina 14 (LO14), from serovar Canicola, which was isolated in the northern region of Paraná state, Brazil, used as primary antibodies. Direct examination detected... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Leptospire; Indirect immunoperoxidase; Immunohistochemistry; Cows; Culture. |
| Ano: 2005 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822005000100008 |
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| Arzate-Vázquez,Gerardo L; Castrejón-Pineda,Francisco A; Rosiles-Martínez,René; Carrillo-Pita,Silvino; Angeles-Campos,Sergio; Vargas-Bello-Pérez,Einar. |
| G.L. Arzate-Vázquez, F.A. Castrejón-Pineda, R. Rosiles-Martínez, S. Carrillo-Pita, S. Angeles-Campos, and E. Vargas-Bello-Pérez. 2016. Effect of genus and growth stage on the chemical and mineral composition of tropical grasses used to feed dairy cows. Cien. Inv. Agr. 43(3): 476-485. In tropical production systems, dairy cows are rarely supplemented with minerals, which often lead to mineral imbalances. Grasses grown together in the same soil type and sampled at the same growth stage can vary widely in chemical and mineral composition; therefore, the objective of this study was to characterize the chemical and mineral composition of Urochloa spp., Megathyrsus spp., and Andropogon spp. at three different stages of growth in the same soil type. The content... |
| Tipo: Journal article |
Palavras-chave: Cows; Forage; Nutritive value; Ruminants; Trace minerals. |
| Ano: 2016 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-16202016000300013 |
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| Kowalski,Ananda Paula; Maboni,Grazieli; Espindola,Julia Pires; Foletto,Ariane; Bandeira Junior,Guerino; Pötter,Luciana; Botton,Sônia de Avila; Vargas,Agueda Castagna de. |
| Records of in vitro susceptibility tests performed between 1992 and 2011 were retrospectively reviewed in order to evaluate the dynamic profiles of possible changes in antimicrobial resistance of Staphylococcus spp. isolated from milk samples of cows with mastitis during two decades. The results of 2,430 isolates tested by disk diffusion technique for susceptibility to oxacillin, penicillin, ampicillin, cephalexin, norfloxacin, tetracycline, sulfazotrim, gentamicin, and neomycin were analysed. Comparisons were performed between the percentages of resistance to antimicrobials and their classes and also between the decades studied. Additionally, the possible tendency or changes in the behaviour of these pathogens against the major drugs used in the last two... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Cows; Milk; Staphylococcus spp.; Susceptibility; Surveillance. |
| Ano: 2015 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782015000601035 |
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| Rocha,Bruno Ribeiro; Narduche,Lorena; Oliveira,Clara Slade; Martins,Gabriel; Lilenbaum,Walter. |
| ABSTRACT: For a long time, it has been stated that urine leptospiral shedding is intermittent, which was observed primarily by culturing. However, culturing presents serious limitations, mainly low sensitivity, and failure on detection of leptospires cannot be neglected. PCR presents several advantages, mainly higher sensitivity. The present study aimed to analyze the occurrence of intermittency on leptospiral shedding by PCR in naturally and experimentally infected animals. In this study two experiments were conducted, the first with 60 cows naturally infected from an endemic herd. The second one was conducted in three sheep experimentally infected, each one with a different strain of Leptospira (strains Copenhageni L1-130, Canicola LO-4 and Pomona... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Cows; Intermittent; PCR; Sheep; Strain. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782017000800453 |
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| MELO, J. T. de; ZOBY, J. L. F.. |
| ABSTRACT: The main of arborization of grasslands is the comfort supplied to the animals by the shadow of the trees, which not only increases the milk production but also improves the reproduction of the cows. In hot regions and shadowed areas, the grazing behavior of animals is changed resulting in better distribution of rumination during the day and more time for animals to rest. An experiment to select species for arborization of grasslands in the Cerrado areas was installed in Planaltina-DF, on a grassland of Brachiaria decumbens. In this experiment 21 species were evaluated. Based on tree height, trunk diameter, tree canopy and survival after 57 months, the best species for grasslands arborization were: Jacaré (Piptadenia gonoacantha (Mart.) J. F.... |
| Tipo: Folhetos |
Palavras-chave: Angico; Anadenanthera Falcata; Capim Brachiaria; Pastagem; Silvicultura; Vaca; Cows; Pastures; Silviculture. |
| Ano: 2004 |
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/569247 |
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| VALLE, E. R. do; ANDREOTTI, R.; THIAGO, L. R. L. de S.. |
| Na pecuária de corte, a exploração comercial do sistema de cria se constitui na fase do sistema produtivo, que envolve a criação e o manejo não só das matrizes bovinas e seus respectivos bezerros ate a desmama, mas também das novilhas de reposição e dos touros. Esse sistema tem por objetivo a produção de bezerros desmamados que representa a maior fonte de receita do criador. A venda de vacas descartadas e outros animais, apesar de contribuírem para a produção total, e uma fonte de receita marginal. Portanto, a viabilidade do sistema vai depender da eficácia e eficiência com que são utilizados os meios disponíveis para a otimização da produtividade. O escopo deste trabalho foi o de apresentar e discutir as principais praticas de manejo reprodutivo, que... |
| Tipo: Livros |
Palavras-chave: Bovino de corte; Estacao de monta; Novilha; Sanidade; Eficiência; Calf; Health; Management; Production; Acasalamento; Bezerro; Desmama; Manejo; Reprodução; Produção; Vaca; Touro; Heifers; Cows; Beef cattle; Bulls; Copulation; Reproductive performance; Reproduction; Weaning. |
| Ano: 1998 |
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/321581 |
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| ANDREOTTI, R.; GOMES, A.; PIRES, P. P.; RIVERA, F. E. B.. |
| O sistema de produção de gado de corte, desde a preparação para a estação de monta ate a terminação dos animais, necessita de um planejamento sanitário. Esse controle, em uma primeira analise, visa a dar maior segurança econômica ao produtor, pela diminuição dos riscos de perdas na produtividade do sistema. Ao mesmo tempo, o sistema vai oferecer um produto mais seguro, do ponto de vista sanitário, para o consumidor. Portanto, a viabilidade da resposta dos investimentos no sistema de produção, com relação ao melhoramento genético e nutrição animal, vai depender da eficácia da prevenção de doenças no sistema. Este trabalho tem o objetivo de discutir a importância do planejamento sanitário nas doenças consideradas importantes, sem a pretensão de esgotar o... |
| Tipo: Folhetos |
Palavras-chave: Bovino de corte; Controle; Estação de monta; Suplementação; Diseases; Control; Reprotuction; Breeding seasons; Pregnacy; Supplements; Bezerro; Doença; Parasito; Prenhez; Reprodução; Sanidade Animal; Touro; Vaca; Animal health; Bulls; Calves; Cows; Beef cattle; Parasites. |
| Ano: 1998 |
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/316566 |
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| Registros recuperados: 32 | |
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