Comparison of inorganic and organic selenium sources for broilers

Abstract

An experiment was conducted to compare the effects of organic and inorganic sources of Se on growth performance, carcass traits, breast and plasma Se concentrations, and plasma glutathione peroxidase (pGPX3) activity in broilers. Broiler chicks were sexed on d 0 and within sex, randomly allotted to dietary treatment. Average initial and final BW of the broilers were 47 and 2,684 g, and the experiment lasted 49 d. A 3-phase feeding program similar to industry recommendations was used, and the basal diets for each phase were corn-soybean meal based. For each growth phase, the basal diet was supplemented with 0 (control) or 0.30 ppm Se from sodium selenite (SS) or Se-enriched yeast (SY). Each treatment was replicated 7 times (4 pens of males and 3 pens of females) with 50 male or 55 female broilers per replicate. Daily gain, feed intake, gain:feed, eviscerated and chill weights, carcass yield, breast weight, and moisture loss from the breast were not affected (P > 0.05) by Se supplementation. Dietary supplementation with SY increased (P < 0.05) muscle and plasma Se concentrations compared with broilers fed the control diet or the diet with SS. Plasma GPX3 activity was not affected (P > 0.05) by Se source or concentration. The results from this experiment indicate that organic Se increases tissue Se concentration, but it does not affect growth performance, carcass traits, or pGPX3 activity compared with inorganic Se.

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

“…The values do not prove any significant differences between the groups in the weight of breast and thigh muscle, liver and abdominal fat. The results are in agreement with Downs et al (2000) and Payne and Southern (2005). also reported that vitamin E and Se source at 0.1 ppm did not have a significant influence on eviscerated weight, dressed weight, breast fillet yield or average maryland weight at processing.…”

“…The effects of selenium sources on the performance of broiler chickens, carcass characteristics and meat quality were studied by Echevarria et al (1988), Todorovič et al (1999), Downs et al (2000), Payne and Southern (2005). In the current study of the source of Se at 0.1 ppm did not affect the performance of broilers.…”

Effects of selenomethionine and sodium selenite supplementation on meat quality, selenium distribution and antioxidant status in broilers

“…A possible reason for the more significant decrease in drip loss by organic Se may be that organic Se was superior to inorganic Se in increasing the antioxidant property of animals. However, Payne and Southern (2005a) reported that the 24 h breast moisture loss of broilers was not affected by Se supplementation (SY or SS) with the basal diet containing 0.12 mg Se/kg. This may be partially due to different Se levels and sources used.…”

Dietary vitamin E (α-tocopheryl acetate) and organic selenium supplementation: performance and antioxidant status of broilers fed n-3 PUFA-enriched feeds

“…Many of the studies related to organic Se were conducted under normal (Choct et al, 2004;Payne & Southern, 2005) or oxidative stress (Mahmoud & Edens, 2005;Özkan et al, 2007) conditions. Mahmoud & Edens (2005) evaluated the effect of organic Se on performance and different physiological parameters of broilers either in pathogenic Escherichia coli-challenged or under heat-stressed conditions.…”

“…Surai (2006) suggested that the growth response of birds to Se supplementation would also depend on the birds' stress level, with stressed birds being more responsive. Some reports (Choct et al, 2004;Payne & Southern, 2005) indicated that dietary supplementation of Se (organic or inorganic) did not affect BW or BWG of broilers reared at optimum (no oxidative stress) conditions. In contrast, organic Se supplementation increased BW of broilers at 42 days of age (Edens, 2001) and improved feed conversion (Naylor et al, 2000) in broilers reared under normal commercial conditions.…”