The objective of this study was to evaluate whether probiotic supplementation laying hens can improve the quality eggs during storage. trial developed in a commercial farm, which light-weight (36 weeks old) housed cages were randomly selected for one two different treatments: control group fed non-supplemented diets, or birds with diets supplemented 50 g/ton probiotics. lasted 84 days, comprisi...

This study was conducted to determine the effects of dietary supplementation olive leaf extract (OLE), eggshell with membrane (ESM), and ESM that absorbed OLE (OLE+ESM) on performance, egg quality, biochemical, bone parameters in laying Japanese quail. A total 112 quail, being 45-day-old, were divided into 4 groups replicates. The quail fed four diets: i) basal diet ii) supplemented 400 ppm iii...

alpha-fetoprotein producing gastric cancer accounts for less than 10% of the gastric adenocarcinomas. different histologic subtypes may exist, the least common of which is yolk sac morphology. to the best of our knowledge less than 10 cases have been reported with high alpha-fetoprotein and yolk sac components, either pure or mixed with ordinary adenocarcinoma of the stomach. during 10 years, f...

The allocation of important but environmentally limited nutrients, such as carotenoids, often represents a trade-off between homeostasis and reproduction. However, key questions remain about how diet and species traits influence carotenoid allocation. We studied yolk carotenoid profiles and yolk color in relation to trophic level (based on delta(15)N values) in five species of seabirds belongin...

The objective of this work was to determine the influence natural (marigold flower extract) and synthetic (canthaxanthin) pigments on shelf life eggs from light laying hens in final stages production. 288 birds were distributed a completely randomized design, with eight treatments, consisted four levels marigold extract (2.1; 2.4; 2.7 3 ppm) canthaxanthin (0.4 ; 0.7; 1,0 1.3 ppm), each treatmen...

This study aimed at evaluating the effect of dietary calcium levels and the replacement of calcium sources with different particle size compositions on the performance and egg quality of brown layers in their second egg production cycle. A randomized block experimental design was applied with 12 treatments in a 3x4 factorial arrangement: three calcium levels (2.6, 3.2, 3.8 %) and four combinati...