Selenium contents of eggs from broiler breeders supplemented with sodium selenite or zinc-l-selenium-methionine

Abstract

Primary Audience: Nutritionists, Broiler Breeder Personnel SUMMARYThis study evaluated the effects of sources and levels of Se in broiler breeder diets on egg production and Se concentration in eggs. Fifty Cobb 500 hens, 22 wk of age, were individually placed in steel cages and fed a basal diet without Se supplementation for 3 wk. Birds were then provided 5 dietary treatments with 10 replicates of 1 individual hen, which had dietary Se supplied from sodium selenite (inorganic; Na 2 SeO 3 , 45% Se) or from Zn-l-Se-methionine (organic; ZnSeMet, 0.1% Se) as follows: treatment 1, 0.15% Se from Na 2 SeO 3 ; treatment 2, 0.30% Se from Na 2 SeO 3 ; treatment 3, 0.15% Se from ZnSeMet; treatment 4, 0.30% Se from ZnSeMet; treatment 5, 0.15% Se from Na 2 SeO 3 + 0.15% Se from ZnSeMet. Evaluations were conducted in 2 periods of 4 wk each. Experimental diets were prepared through the supplementation of corn-soybean meal diets. Egg production and egg weight were recorded daily, whereas specific gravity was measured twice a week from 25 to 32 wk. In the first period, the hens fed 0.30 ppm of organic Se produced more eggs (P < 0.05), whereas no difference (P > 0.05) in egg production was found in the second period. Period evaluations showed that egg weight was not different (P > 0.05), whereas specific gravity decreased (P < 0.05) and Se concentration in eggs increased (P < 0.05) in the second period, regardless of Se source. A comparison between treatments with single Se sources demonstrated that the concentration of Se in eggs followed the increased levels in the feeds when ZnSeMet was used (P < 0.05). However, the supplementation of a combination of sources (Na 2 SeO 3 and ZnSeMet) produced similar egg Se concentrations.

2-Hydroxy-4-methylselenobutanoic acid induces additional tissue selenium enrichment in broiler chickens compared with other selenium sources

“…our results did not indicate growth performance improvement whatever the Se source or dose in both experiments, which was in agreement with many other studies (Ammar and Couri, 1981;Payne and Southern, 2005a;Rayman et al, 2008;Perić et al, 2009;Reis et al, 2009;Niu et al, 2009). Nevertheless, it is well reported that Se supplementation is required for optimal growth (Payne and Southern, 2005b;Ševčíková et al, 3.3 6.7 5.6 7.9 5.6 6.8 6.7 2.2 a-c Mean values in a row with different superscript letters were statistically different (P < 0.05); significant mean differences were determined after logarithmic transformation to fulfill the variance homogeneity requirement.…”

“…That single Se atom present in SeCys provides improved enzymatic activity, resulting in major roles of selenoproteins in redox homeostasis (Surai, 2002a;Pan et al, 2007;Phipps et al, 2008;Vignola et al, 2009;Arbogast and Ferreiro, 2010;Arnér, 2010). Selenium feed supplementation is traditionally made with sodium selenite (SS) or seleno-yeasts (SY), the later being an organic form of demonstrated higher bioavailability in many animal species (Surai, 2002a;Payne and Southern, 2005a;Pan et al, 2007;Phipps et al, 2008;Perić et al, 2009;Reis et al, 2009;Niu et al, 2009;Vignola et al, 2009). A new organic form of Se has been recently developed, namely Selisseo (SO), containing the active compound 2-hydroxy-4-methylselenobutanoic acid (HMSeBA; Adisseo France S.A.S., Antony, France).…”

Effects of high selenium and fat supplementation on growth performance and thyroid hormones concentration of broilers

“…These forms include, but not limited to Se enriched yeast strains [41], Se enriched malt [42], garlic, cabbage [43], Chlorella algae [44], B-Traxim Se [45] and 2-hydroxy-4-methylselenobutanoic acid [46]. In the present study, added Se was in the form of a Se chelate more specifically ZnSeMet which is a levo-isomer of selenomethionine that is also chelated with an atom of Zn [47,48]. Previous work with ZnSeMet indicated differences compared to other forms of organo-Se compound, more specifically to pure Se-Met and Se yeast, related to better solubility, stability and availability [47,49,50].…”

“…In the present study, added Se was in the form of a Se chelate more specifically ZnSeMet which is a levo-isomer of selenomethionine that is also chelated with an atom of Zn [47,48]. Previous work with ZnSeMet indicated differences compared to other forms of organo-Se compound, more specifically to pure Se-Met and Se yeast, related to better solubility, stability and availability [47,49,50]. More specifically, ZnSeMet compared to SeMet is complexed with a zinc ion thus more stable and compared to Se yeast readily available for absorption since no digestion process of the yeast is necessary for the selenoamino acids to be released [49].…”

The table egg: a review

“…Vitamins A, E, B2, biotin and B12 are markedly influenced by dietary changes (NABER; SQUIRES, 1993a). Also studies were done with enrichment of egg minerals such as iron (BERTECHINI et al 2000) and selenium (REIS et al 2009) among others.…”