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| Registros recuperados: 13 | |
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| Gomes,R.C.; Leme,P.R.; Silva,S.L.; Antunes,M.T.; Guedes,C.F.. |
| To evaluate the effects of the supplementation of feed additives on carcass quality in beef cattle, 72 Nellore steers (339.5kg, 20-month old) were feedlot finished and fed for 91 days one of the following diets: 1) control with no additives; or added of 2) live yeast culture; 3) monensin; or 4) the association of both additives. After slaughter, renal, pelvic, and inguinal fat and hot carcass weights were recorded and carcass was split into muscle, bone, and trimmable fat. Carcass Longissimus muscle area and subcutaneous fat thickness at the 12th rib were measured and steaks of Longisimus muscle were taken to determine meat color, shear force, drip, and cooking losses. Yeast increased carcass dressing percentage but there were no effects on hot carcass... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Steer; Direct-fed microbial; Ionophores; Retail product yield; Shear force; Saccharomyces cerevisiae. |
| Ano: 2009 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352009000300018 |
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| Lawrence, John D.; Ibarburu, Maro A.. |
| Cattle production is the largest single agricultural sector in the U.S. with cash receipts of $49.2 billion in 2005. Like the rest of agriculture cattle producers have adopted efficiency and quality improving technology to meet consumer demands for a safe, wholesome, and affordable food supply. This research uses meta analysis to combine over 170 research trials evaluating pharmaceutical technologies in the cow-calf, stocker, and feedlot segments of beef production. These results were used to estimate the farm level economic value of parasite control, growth promotant implants, sub-therapeutic antibiotics, ionophores, and beta agonists for the industry in 2005. The Food and Agriculture Policy Research Institute (FAPRI) model of U.S. agriculture was used to... |
| Tipo: Conference Paper or Presentation |
Palavras-chave: Cattle; Production cost; Growth promotants; Ionophores; Antibiotics; Parasite control; Beta-agonists. |
| Ano: 2007 |
URL: http://purl.umn.edu/37560 |
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| Ley de Coss, Alejandro. |
| Se aisló una bacteria de ovinos con acidosis ruminal usando medios selectivos para el crecimiento de bacterias productoras de ácido láctico. La bacteria fue identificada genéticamente usando una secuencia parcial de 800 nucleótidos del gen ARNr 16S obtenida por el método de la reacción en cadena de la polimerasa (PCR). Para evaluar in vitro el efecto de los ionóforos monensina y lasalocida en la actividad metabólica de la bacteria se usó una dosis de 30 y 40 g ton-1 de Rumensin (monensina) y Bovatec (lasalocida). Tubos de cultivo con 9 mL de medio de cultivo anaerobio y 0.1 g de una dieta para ovinos alta en carbohidratos de fácil fermentación fueron inoculados con una concentración de 108 bacterias mL-1 de medio de cultivo. A las 24, 48 y 72 h... |
| Tipo: Tesis |
Palavras-chave: Bacterias ruminales; Pediococcus acidilactici; Ionóforos; Doctorado; Ganadería; Rumen bacteria; Ionophores. |
| Ano: 2008 |
URL: http://hdl.handle.net/10521/1212 |
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| Ley de Coss, Alejandro. |
| Se aisló una bacteria de ovinos con acidosis ruminal usando medios selectivos para el crecimiento de bacterias productoras de ácido láctico. La bacteria fue identificada genéticamente usando una secuencia parcial de 800 nucleótidos del gen ARNr 16S obtenida por el método de la reacción en cadena de la polimerasa (PCR). Para evaluar in vitro el efecto de los ionóforos monensina y lasalocida en la actividad metabólica de la bacteria se usó una dosis de 30 y 40 g ton-1 de Rumensin (monensina) y Bovatec (lasalocida). Tubos de cultivo con 9 mL de medio de cultivo anaerobio y 0.1 g de una dieta para ovinos alta en carbohidratos de fácil fermentación fueron inoculados con una concentración de 108 bacterias mL-1 de medio de cultivo. A las 24, 48 y 72 h... |
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Palavras-chave: Bacterias ruminales; Pediococcus acidilactici; Ionóforos Rumen bacteria; Pediococcus acidilactici; Ionophores. |
| Ano: 2012 |
URL: http://hdl.handle.net/10521/844 |
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| Ley de Coss, Alejandro. |
| Se aisló una bacteria de ovinos con acidosis ruminal usando medios selectivos para el crecimiento de bacterias productoras de ácido láctico. La bacteria fue identificada genéticamente usando una secuencia parcial de 800 nucleótidos del gen ARNr 16S obtenida por el método de la reacción en cadena de la polimerasa (PCR). Para evaluar in vitro el efecto de los ionóforos monensina y lasalocida en la actividad metabólica de la bacteria se usó una dosis de 30 y 40 g ton-1 de Rumensin (monensina) y Bovatec (lasalocida). Tubos de cultivo con 9 mL de medio de cultivo anaerobio y 0.1 g de una dieta para ovinos alta en carbohidratos de fácil fermentación fueron inoculados con una concentración de 108 bacterias mL-1 de medio de cultivo. A las 24, 48 y 72 h... |
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Palavras-chave: Bacterias ruminales; Pediococcus acidilactici; Ionóforos Rumen bacteria; Pediococcus acidilactici; Ionophores. |
| Ano: 2012 |
URL: http://hdl.handle.net/10521/860 |
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| Jacinto-Valderrama,Rickyn Alexander; Sampaio,Guilherme Sicca Lopes; Lima,Maria Lucia Pereira; Cyrillo,Joslaine Noely dos Santos Gonçalves; Pflanzer,Sergio Bertelli. |
| ABSTRACT: The present study aimed to evaluate the effects of immunocastration on the animal growth, carcass traits, and meat quality of Nellore cattle receiving or not Ionophore supplementation at pasture or pasture with concentrate (semi-feedlot). The first experiment (Pasture) was carried out during the rainy season, while the second (supplemented = Semi-feedlot) was conducted during the dry season. In each assessment, 60 males were allocated into three treatments, in a completely randomized design: non-castrated, immunocastrated (anti-gonadotropin-releasing hormone vaccine), and immunocastrated animals receiving ionophore. The highly energetic supplemented diet was prepared using 85 % corn and 10 % soybean meal at 1 % body weight, while the ionophore... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: DFD; Beef tenderness; Marbling; Grown performance; Ionophores. |
| Ano: 2021 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162021000200901 |
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| Vieira,SL; Favero,A; Berres,J; Freitas,DM; Martinez,JEP; Mayorga,ME; Coneglian,JLB. |
| A study was conducted with the objective of evaluating the combined application of tiamulin (TIA) and salinomycin (SAL) in broiler diets fed from 1 to 42 d of age. One thousand and two hundred Cobb x Cobb 500 male broilers were housed in 48 floor pens and fed corn-soybean meal diets containing 66 ppm of SAL combined or not with TIA at 30 or 20 and 20 or 15 ppm, respectively, in the starter (1-21 d) and grower feeds (22-42 d); however, TIA was withdrawn from the feeds 7 days before slaughter. The experimental design was completely randomized with 3 treatments and 16 replicates of 25 birds each. Broilers were weekly evaluated for live performance whereas carcass yield, abdominal fat and commercial cuts were assessed at 42 d using 6 birds randomly taken from... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Antibiotic; Broiler; Ionophores; Salinomycin; Tiamulin. |
| Ano: 2010 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2010000100005 |
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| Gandra,Jefferson Rodrigues; Rennó,Francisco Palma; Freitas Júnior,José Esler de; Santos,Marcos Veiga dos; Silva,Luís Felipe Prada e; Araújo,Ana Paula Chaves de. |
| The objective of this work was to evaluate the levels of sodium monensin on lactating cows and their effects on productive performance and milk protein fraction composition. It was used 12 Holstein cows, distributed in four balanced 3 × 3 Latin squares, and fed three diets: one control without monensin, and two diets with monensin at the levels of 24 or 48 mg/kg DM added to the concentrate. Milk production was daily measured throughout the entire experimental period. The samples used for analysis of milk composition were collected on two alternated days from the two daily milking. Non-protein nitrogen, total nitrogen and non-casein nitrogen contents were directly evaluated in the milk, and casein, whey protein and true protein contents were indirectly... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Casein; Dairy cows; Ionophores; Milk yield and composition; Productive efficiency. |
| Ano: 2010 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982010000800025 |
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| Silva, Fernanda Gomes Bezerra da; Yamamoto, Sandra Mari; Silva, Eva Mônica Sarmento da; Queiroz, Mario Adriano Ávila; Gordiano, Layse Araújo; Formiga, Marcela Almeida. |
| This study evaluated the effects of different concentrations of 30% propolis ethanol extract (PEE) and sodium monensin on the intake of dry matter, nutrient digestibility and ruminal fermentation and hematological parameters in sheep. Six adult castrated male sheep fistulated in the rumen were assigned to a 6 x 6 Latin square design. The addition of PEE or sodium monensin to the diet did not change the digestibility coefficients of dry matter (79.4%), crude protein (77.0%), neutral detergent fiber (76.1%), acid detergent fiber (69.7%), hemicellulose (80.9%), and organic matter (79.4%). Sheep fed diets with inclusion of sodium monensin showed 11.3% reduction in dry matter intake (1.76 kg day-1) compared to those which received PEE (2.00 kg day-1). The... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Nutrition; Ionophores; Bacteria; Rumen; Sheep blood. |
| Ano: 2015 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/25725 |
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| Oliveira,Isis Scatolin de; Sousa,Daniel de Paula; Queiroz,Augusto Cesar de; Macedo,Bruna Gomes; Neves,Camila Garcia; Bianchi,Isabela Eloisa; Teobaldo,Ronyatta Weich. |
| Animals on pasture generally show higher feed efficiency as a result of the use of antibiotics. This study evaluated the effect of the antimicrobials salinomycin and/or virginiamycin on production and the ruminal parameters of supplemented dairy cows grazing on Panicum maximum cv. Tanzania. Twelve Holstein/Zebu multiparous cows were used, distributed in three Latin squares, one for the evaluation of ruminal parameters, and the others for production parameters. Cows on pasture were fed 50 % of their estimated intake with corn silage and concentrate supplements containing salinomycin, virginiamycin or a combination of additives, in doses of 120 and 150 mg kg−1, respectively. There were no differences in milk production and composition, energy and nitrogen... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Panicum maximum; Digestibility; Feeding behavior; Ionophores; Nitrogen balance. |
| Ano: 2015 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162015000400285 |
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| Maciel,I.C.F.; Saturnino,H.M.; Barbosa,F.A.; Malacco,V.M.R.; Andrade Júnior,J.M.C.; Maia Filho,G.H.B.; Costa,P.M.. |
| ABSTRACT The aim of this paper was to evaluate the effects of including virginiamycin (VM), sodium monensin (MON) or the association (VM+MON) in the energetic mineral supplement, on the intake and performance of beef cattle on pasture. Forty Nellore heifers with 24 months of age and initial body weight (BW) of 251.5±16.6kg, were distributed in four treatments in a randomized block design. Treatments consisted of adding VM, MON or VM+MON to the supplement (CONT). Additive concentrations were defined to reach a dose of 40 to 45mg/100kg BW. The herbage allowance was not a limiting factor for the animals’ intake. Supplement intake was lower than expected, with 33.0, 18.8 and 26.3mg per 100kg BW for VM, MON and VM+MON, respectively. Dry matter intake (DMI,... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Additives; Heifers; Intake; Ionophores; Performance. |
| Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352019000601999 |
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| Registros recuperados: 13 | |
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