Options for the Production of Selenized Chicken Meat

Abstract

A 42-day experiment was conducted to compare the effects of various levels of sodium selenite (SS) and Se-enriched yeast (SY) on chicken productivity, carcass traits, and breast Se concentration. Six hundred 1-day-old Cobb 500 broiler chicks were placed on 1 of 6 experimental treatments. The treatments consisted of feeding a diet without Se supplementation (basal diet) or basal diet with 0.6 mg/kg supplemented Se supplied by SS, SY, or a mix of the two (0.45 SS + 0.15 SY; 0.3 SS + 0.3 SY; 0.15 SS + 0.45 SY). Chicks in all Se-supplemented treatments had significantly higher final body weight and eviscerated weight than those on the basal diet (P < 0,05) and no significant differences were observed among selenium source (P < 0.05). Also, chicks in all Se-supplemented treatments had significantly higher Se contents in breast tissue than the control group (P < 0.05). Replacing SS by SY in the broiler diets resulted in increased concentrations of Se in the breast (P < 0.01). Strong correlations were found between breast Se concentrations and the level of SY supplementation of the broiler diet (r = 0.992). The results from this experiment indicate that SY is a superior source of selenium for the production of selenized meat, and can be used, without any detrimental effect on chicken performance, for adding nutritional value to broiler meat and thus safely improving human selenium intake.

Efficacy of Selenium from Hydroponically Produced Selenium-Enriched Kale Sprout (Brassica oleracea var. alboglabra L.) in Broilers

“…These outcomes consistently confirmed that the efficacy of Se from Seenriched yeast and HPSeKS was comparable, but higher than that of Se from sodium selenite when used tissue Se concentration as an indicator [19]. Numerous reports similarly observed broilers received Se from Se-enriched yeast or Seenriched alga had higher (p<0.05) tissue Se content than those received Se from sodium selenite [4,5,7,8,38,39]. On the other hand, Se from Se-enriched garlic, cabbage [10], and malt [40] did not improve Se concentrations in chick tissues, reflecting that selenomethionine is not the major Se species in these plants.…”

“…Payne and Southern [26] found no effect of sources or levels of Se (0 to 0.3 mg/kg) on carcass traits in broilers. Several reports [5,7,34] also reported that carcass characteristics of broilers were not influenced by different sources and levels of Se (0 to 0.6 mg/kg). However, Upton et al [32] observed that some parameters of cutup yields of high-yielding broilers were increased with organic Se supplementation (0 to 0.2 mg/kg) from Se-enriched yeast.…”

“…Thus, there are many organic Se sources applied in poultry diets. Se from Seenriched yeast, a well-recognized commercial source of organic Se, increased higher Se deposition in tissues of broilers when compared to inorganic Se from sodium selenite [3][4][5][6]. Se from Se-enriched alga [7,8] and Se-enriched probiotics [9] was also reported to be a good source of organic Se for chickens.…”

Sources and levels of selenium on breast meat quality of broilers

“…This trace element is also involved in biochemical processes such as reproductive and immune functions, and the production of thyroid hormones (KOHRL et al, 2000). KRSTIÉ et al (2012), reported that the concentration of selenium in the soil in many parts of the globe is insuffi cient to ensure the minimal trace element in foods, causing its defi ciency in humans and consequently decrease the activity of several selenoenzymes necessary for physiological homeostasis of the organism. CROMWELL et al (1999) noted that the concentration of selenium in corn and soybean meal of 15 American states, ranged between 0.02 to 0.29mg kg -1 and 0.08 to 0.95mg kg -1…”

“…CLOSE (1998) and KRSTIÉ et al (2012) reported that selenium is currently added to the poultry feed at concentrations ranging from 0.15 to 0.5mg kg -1…”