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Articles by Alexandre Oba
Total Records ( 2 ) for Alexandre Oba
  Luiz Gustavo Alessi Aristides , Fernanda Gonzales Paiao , Leticia Sayuri Murate , Alexandre Oba and Massami Shimokomaki
  Commercial broiler chickens were treated with five diets containing probiotics (Bacillus subtilis), prebiotics (mannan oligosaccharide-MOS), synbiotics (Saccharomyces cerevisiae, Lactobacillus acidophilus, Lactobacillus casei, Bifidobacterium bifidum, MOS and FOS (fructoligosaccharides), Avilamycin, or a control treatment (no additives). Performance parameters including total weight, daily weight gain, feed intake, viability production efficiency index and yield of carcasses and cuts were evaluated. In addition, meat quality parameters including the proportion of PSE meat (Pale, Soft, Exudative) and lipid oxidation were measured. The results indicated that the biotic treatments did not cause significant differences in any of the parameters evaluated. With regard to the meat quality, birds fed biotic diets showed a reduction in the development of PSE meat and also a decrease in lipid oxidation. These additives are therefore nutritionally feasible replacements for growth promoters and the animal husbandry indices of animals treated with these additives were similar to those of animals fed the normal rations and the use of additives contributed to improvements in the meat quality.
  Rafael H. Carvalho , Danielle C.B. Honorato , Paulo D. Guarnieri , Adriana L. Soares , Mayka R. Pedrao , Fernanda G. Paiao , Alexandre Oba , Elza I. Ida and Massami Shimokomaki
  The development of Rigor mortis (RM) in turkey Pectoralis major under routine commercial plant conditions was described. Carcass samples (n = 40) were refrigerated by air chill (AC) in a processing line and the final temperature (T) of 4°C was reached after 7 h Postmortem (PM) and the ultimate pH (pHu) of 5.68 was achieved after 24 h PM. For results comparison, carcasses were kept at ambient temperature (AT), averaging 20±2°C and the pHu of 5.67 was reached after 5 h PM. The AC samples presented darker and higher water holding capacity values compared to AT samples after 10 h PM while at 24 h PM these results did not differ between delay and fast glycolysis. Finally, the rate of glycolysis was directly affected by air refrigeration and the fillet samples should be processed at 24 h PM to ensure complete RM onset thus preventing the decrease of meat qualities.
 
 
 
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