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ResumoEste trabalho teve por objetivo avaliar o desempenho de galinhas poedeiras alimentadas com diferentes níveis de complexo enzimático a base de fitase, celulase, pectinase, protease, amilase, betaglucanase e xilanase. Foram utilizadas 328 poedeiras leves da linhagem Shaver White, com 60 semanas de idade. As aves foram distribuídas em cinco tratamentos, que consistiam em diferentes níveis de complexo enzimático (0, 50, 100, 150 e 200 ppm). Foram avaliados o desempenho das aves, qualidade da casca dos ovos, qualidade interna dos ovos, pH e viscosidade do conteúdo intestinal, matéria seca e mineral das fezes e microbiologia do conteúdo do intestino delgado. Os resultados mostraram que a adição do complexo enzimático nas rações à base de milho e farelo de soja de galinhas de postura velhas não proporcionou melhorias no desempenho das aves, qualidade da casca e interna dos ovos, matéria seca e mineral das fezes e microbiologia do conteúdo intestinal, porém houve resposta linear significativa quando se aumentou os níveis do complexo enzimático, onde este proporcionou um aumento do pH e uma menor viscosidade da digesta do intestino delgado. Palavras-chave: Aditivos, ave, enzimas, microbiologia, nutrição, qualidade ovo AbstractThis study aimed to evaluate the performance of laying hens fed different levels of the enzyme complex (phytase, cellulase, pectinase, protease, amylase, beta-glucanase e xylanase). 328 laying hens were used Shaver White strain at 60 weeks of age. The birds were distributed into five treatments, involving different levels of enzyme complex (0, 50, 100, 150 and 200 ppm). We evaluated the performance of laying hens, egg shell quality, internal egg quality, pH and viscosity of the intestinal contents, dry matter and mineral in the excreta and microbiology of the contents in the small intestine. The results showed that the addition of the enzyme complex in diets based on corn and soybean meal for laying hens old did not improve on broiler performance, eggshell and internal egg quality, dry matter and mineral content in the excreta and microbiology of the contents in the small intestine. However there was a significant linear response when increased levels of the enzyme complex, where it caused an increase in pH and a

This work was carried out with the objective of evaluating the effects of different levels of replacement of whole grain corn by pelleted soybean hulls in high concentrated diet, without long fiber use, on intake, productive performance and economical viability of feedlot lambs production. Twenty four Texel lambs, 12 males and 12 females of the same age, with average weight of 23 kg, distributed in 12 stalls, in a completely randomized design, were used. The treatments consisted of replacement of whole grain corn by pelleted soybean hulls, at levels of 0% (SH0), 15% (SH15) and 30% (SH30). Dry matter (DM) (kg day -1

The objective of this study was to evaluate four different feeding strategies using an immunomodulatory feed additive for newly weaned Nellore cattle, before and after road transport, on their physiological parameters and performances during the growing phase of pastures. In total, eighty-four young Nellore bulls (initial BW = 174 ± 11 kg; 7 ± 1 months of age) were blocked by their initial body weights 42 days before road transport (d −42) and randomly assigned to one of the four supplementation strategies. The treatments were: (1) Control (CON): no immunomodulatory feed additive (NUTRA) supplementation; (2) NUTRA pre: the inclusion of NUTRA only in the pre-transport period (d −42 to d 0); (3) NUTRA post: the inclusion of NUTRA for 42 days, only in the post-transport period (d 0 to d 42); and (4) NUTRA growth: the inclusion of NUTRA during the whole experimental period (d −42 to d 210). On d 0, the calves were transported on dirty roads in a commercial livestock trailer for 200 km (8 h). There was no effect of the treatments on the animal performance or the physiological parameters in their plasma. However, there were effects on the day of the blood sampling for all the parameters. The highest concentration of cortisol was observed on d 3 post-transport (129 ng/mL) and this decreased over time (22.4 ng/mL; d 210). On the other hand, their glucose peaked at unloading, with lower concentrations on d 7 and d 14. Their total protein concentrations increased from d 0 to d 7. The immunomodulatory feed additive supplementation at 10 g/100 kg BW/day did not modulate the physiological responses in their plasma and did not influence the performance of the Nellore bulls during the growing phase of their pastures.