title: 2-Hydroxy-4-Methylselenobutanoic Acid as New Organic Selenium Dietary Supplement to Produce Selenium-Enriched Eggs.
abstract: Food-based strategies need to be developed to improve the selenium (Se) status of individuals. The aim of this study was to evaluate the effects of a new organic Se [2-hydroxy-4-methylselenobutanoic acid (HMSeBA)] on selected performance criteria and Se deposition in egg of laying hens. Isa Brown laying hens, 18 weeks of age were randomly allocated to two dietary treatments and fed for 10 weeks. The hens were fed two corn-soybean meal-based diets comprising a control basal diet without Se supplementation and a test diet supplemented with Se at 0.2 mg/kg from HMSeBA. No difference was observed among dietary treatments on feed intake, egg weight and laying rate, whereas egg yolk fatty acid profile and vitamin E content were positively influenced by HMSeBA supplementation. Hens fed Se-supplemented diet exhibited greater (P < 0.001) egg yolk total Se contents, which averaged 21.2 mg/100 g dry matter (DM) compared to control diet (11.7 mg/100 g DM). Our results suggested that HMSeBA as Se supplement influences positively egg yolk quality without affecting hens' productive traits. Moreover, HMSeBA offers an efficient alternative to fortify eggs with Se, which can consequently lead to greater supply of Se for humans.
authors.affiliation: Department of Emergency and Organ Transplantation (DETO), Section of Veterinary Science and Animal Production, University of Bari 'Aldo Moro', s.p. per Casamassima km 3, 70010, Valenzano, Italy. vincenzo.tufarelli@uniba.it.
authors.forename: V
authors.initials: V
authors.lastname: Tufarelli
authors.affiliation: Department of Veterinary Medicine, University of Bari 'Aldo Moro', 70010, Valenzano, Italy.
authors.forename: E
authors.initials: E
authors.lastname: Ceci
authors.affiliation: Department of Emergency and Organ Transplantation (DETO), Section of Veterinary Science and Animal Production, University of Bari 'Aldo Moro', s.p. per Casamassima km 3, 70010, Valenzano, Italy.
authors.forename: V
authors.initials: V
authors.lastname: Laudadio
mesh_terms: D000821:Animal Feed / Q000032:analysis*; D000818:Animals; D002087:Butyrates / Q000008:administration & dosage* / Q000494:pharmacology*; D002645:Chickens; D019587:Dietary Supplements; D004530:Egg Yolk / Q000737:chemistry* / Q000187:drug effects*; D005227:Fatty Acids / Q000032:analysis; D005260:Female; D012643:Selenium / Q000032:analysis*; D018036:Selenium Compounds / Q000008:administration & dosage* / Q000494:pharmacology*
chemical_list: C551033:2-hydroxy-4-methylselenobutanoic acid; D002087:Butyrates; D005227:Fatty Acids; D018036:Selenium Compounds; D012643:Selenium
keywords: Egg production; Egg quality; Laying hens; Selenium