The effect of selenium source on the performance and meat quality of broiler chickens

Abstract

ABSTRACT:The effect of dietary supplementation of selenium in an organic form on performance, carcass traits and selenium content in tissues of broiler cockerels Ross 308 was studied. The soya-wheat-maize diet contained 50 mg vitamin E/kg. The experiment was conducted on 810 straight-run broiler cockerels randomly divided into 3 groups: group I -control, without selenium supplement; experimental group: II -0.3 mg Se/kg, Se-enriched yeast was applied as a Se source; III -0.3 mg Se/kg, Se-enriched alga Chlorella as a Se source. The broiler chickens were slaughtered at 42 days of age. In performance traits higher (P ≤ 0.05) live weight of broiler chickens was recorded in the experimental groups (II -2 430.6 g and III -2 425.2 g). There were no significant differences between the groups in feed conversion and mortality. Se-enriched alga had the best feed conversion, and selenium supplementation slightly increased mortality in both experimental groups. No significant differences between the groups were found out in carcass traits and dressing percentage. The content of selenium in breast and thigh muscle, feathers and excrements increased (P ≤ 0.05) in both experimental groups compared to the control group. Higher values in breast and thigh muscle and in feathers were measured in the group supplemented with selenium from Se-enriched yeast, also in comparison with the group supplemented with selenium from Se-enriched alga Chlorella. The broiler chickens receiving Chlorella had a higher (P ≤ 0.05) selenium content in excrements compared to the group with Se-enriched yeast. The selenium concentration in liver was higher (P ≤ 0.05) in both experimental groups compared to the control. The supplement of selenium from Se-yeast and Chlorella in the diet for broiler chickens increased the microelement concentration in muscle.

Vitamin E and organic selenium for broilers from 22 to 42 days old: performance and carcass traits

“…The results of this study are consistent with those observed by Sevcíková et al (2006), who found no effect of the level and source of selenium on the absolute weight of the liver and giblets (liver, heart and gizzard together). The results also agree with Haug et al (2007), who found no differences in the weights of liver and heart of broilers at 22 days, fed diets supplemented with 0.50 and 0.84 mg/kg of organic selenium.…”

“…The results of this study agree in part with those obtained by Sevcíková et al (2006) Concerning the evaluated organs (Table VI), also no interaction between levels of selenium and vitamin E was found (P> 0.05). Selenium levels did not affect the relative weights of liver, gizzard, intestine, or heart (P> 0.05).…”

Effect of selenium sources on growth performance and tissue selenium retention in yellow broiler chicks

“…When a corn-soybean meal diet was used, the Se concentration in the basal diet (about 0.06 mg/kg) often met the requirement of chick growth, and there was no significant change in weight gain by Se supplement. Compared with the control chicks, chicks fed diets supplemented with Sodium selenite or Nano elemental Se had similar (P > 0.62) ADFI and ADG, however, chicks fed diets supplemented with Se yeast A or B Tissue accumulation of a mineral is considered to be a sensitive criterion for mineral utilization (Ševčíková et al 2006;Liao et al 2012). In the current study, the Se source significantly affected (P < 0.05) liver and breast muscle Se concentrations of chicks (Table 3).…”

“…Inorganic Se salts, such as sodium selenite, are generally supplemented in diets to meet the Se requirement of chickens (Perić et al 2009). When the FDA first permitted the usage of Se yeast in poultry diets in 2001, Se yeast products have been developed and reported to be more effective than inorganic Se used in chicken feeds (Rayman 2004;Ševčíková et al 2006;Yoon et al 2007). Nano red elemental Se was a new Se source, which has novel characteristics such as a large surface area, high surface activity, high catalytic efficiency, strong adsorbing ability and low toxicity (Zhang et al 2001;Peng et al 2007;Wang et al 2007).…”

Effect of Dietary Selenium Sources in Racing Pigeons and their Effect on Antioxidant Markers During Flying Effort

“…One way how to prevent these problems is to provide them with vitamin-minerals supplements which have a strong antioxidant function. In general, the antioxidant system comprises natural fat soluble antioxidants (Eg: vitamin A, a-tocopherols, carotenoids), water soluble antioxidants (Eg: ascorbic acid, uric acid), antioxidant enzymes (glutathione peroxidase GPx and other Se-enzymes, catalase CAT, catalyzer super oxide dismutase SOD), and thiol redox system (glutathione system and thioredoxin system) [2,3].…”