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| Registros recuperados: 13 | |
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| Revolledo,Liliana; Ferreira,Claudete Serrano Astolfi; Ferreira,Antonio José Piantino. |
| The efficacy of three different types of experimental competitive exclusion (CE-A, CE-B and CE-C) cultures against Salmonella Kedougou (SK) NCTC 12173, resistant to nalidixic-acid resistant (NalR), in one-day-old broiler chicks, in four treatments with three replicates in each treatment, was evaluated. The mean logarithmic counts of Salmonella program of feces were 0.4 L in the group treated with CE-A, derived from the whole cecal contents of an adult bird with a mixture of aerobic and anaerobic bacterial cultures; 1.22 in the group treated with CE-B, containing aerobic bacterial culture; 1.00 in the group treated with CE-C, containing anaerobic bacterial culture; and 6.64 in the control group. The percentage of colonized birds varied from 10% to 26.66% in... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Competitive exclusion; Salmonella; Broiler chicks. |
| Ano: 2003 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822003000400014 |
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| Silva,IGO; Vellano,IHB; Moraes,AC; Lee,IM; Alvarenga,B; Milbradt,EL; Hataka,A; Okamoto,AS; Andreatti Filho,RL. |
| ABSTRACT The present study evaluated a probiotic and a competitive exclusion product injected in ovo on day 18 of incubation together with Marek's disease vaccine in eggs of 56-week-old broiler breeders. Three experiments were carried out. The first trial evaluated the effect of treatments on hatchability, cecal colonization of Salmonella Heidelberg (SH), and intestinal mucosa immunity (immunoglobulin A levels in the intestinal fluid). The second trial evaluated the viability of the microorganisms in the products inoculated in a solution containing diluent and Marek's disease vaccine. The third trial evaluated the colonization of the cecal microbiota in non-challenged chickens during first four days of life by culturing cecal samples under aerobic and... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Chickens; Competitive exclusion; In-ovo inoculation; Probiotic; Salmonella Heidelberg. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2017000100019 |
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| Fonseca,Belchiolina Beatriz; Beletti,Marcelo Emílio; Silva,Max Siqueira da; Silva,Paulo Lourenço da; Duarte,Ivamario Nahas; Rossi,Daise Aparecida. |
| It was studied, in this work, the effects of supplementation of probiotics on the performance, on the pH of crop content, on the morphometry of the ileum and on the number of enterobacteria in the cecum of the broilers. Out of the 120 studied birds, 60 belonged to the test group and 60 to the control group. At 1, 7, 12, 18, 23 and 28 days of age, the chickens and rations were weighed and mortality and morbidity were determined. Then, the birds were sacrificed and the pH of the crop content was measured, ileum fragments were collected for morphometric analysis and the enterobacteria in the cecal content were quantified. The mean pH was lower in the group that was given probiotics at 1, 7 and 18 days of age. There were no differences on ration consumption,... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Body weights; Competitive exclusion; Enterobacteria; Intestinal villi; Ration. |
| Ano: 2010 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982010000800018 |
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| MACNAB,BRIAN K.. |
| Most of the variation (98.8 %) in basal rate of metabolism (BMR) in 70 species of marsupials is correlated with body mass, although lowland species have higher basal rates than highland species and burrowers have lower basal rates than non-burrowers. These factors collectively account for 99.2 % of the variation in marsupial BMR. Marsupials differ in BMR from eutherians by having no species with a high basal rate by general mammalian standards, even when consuming vertebrates or grass, food habits that are associated with very high basal rates in eutherians. The absence of high basal rates in marsupials reflects the absence of a correlation of rate of reproduction with basal rate, a correlation present in eutherians. These differences have two... |
| Tipo: Journal article |
Palavras-chave: Coexistence; Competitive exclusion; Eutherians; Marsupials; Reproduction. |
| Ano: 2005 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-078X2005000200002 |
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| Milbradt,EL; Okamoto,AS; Padovani,CR; Fascina,VB; Silva,TM; Altarúgio,R; Hataka,A; Schmidt,EMS; Andreatti Filho,RL. |
| ABSTRACT It is estimated that Salmonella causes one million illnesses in the United States annually, with 19,000 hospitalizations and 380 deaths. There are various serotypes of this bacterium, and the serotypes Typhimurium and Enteritidis are commonly isolated from outbreaks and, in most cases, present resistance to the antibiotics utilized in clinical medicine. One of the current theories to explain the emergence of bacterial resistance is the continuous use of antibiotics as growth promoters in animal feeds. Despite the lack of evidences that antibiotic growth promoters cause bacterial resistance, the poultry industry has explored strategies to reduce or to eliminate the use of antibiotic growth promoters in the production chain, including the... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Commercial turkey; Competitive exclusion; Organic acid; Salmonella Enteritidis. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2017000400551 |
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| Registros recuperados: 13 | |
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