Effects of Different Selenium Sources on Laying Performance, Egg Selenium Concentration, and Antioxidant Capacity in Laying Hens
- 137 Downloads
Supplementation of selenium (Se) is a common practice in the poultry industry via sodium selenite (SS) and selenium yeast (SY), while the effects of nano-selenium (NS) on laying hens are poorly known. This study aimed to compare the effects of NS, SS, and SY on productivity; selenium (Se) deposition in eggs; and antioxidant capacity in laying hens. A total of 288 30-week-old Brown Hy-line laying hens were randomly assigned into four dietary treatments, which included corn-soybean meal basal diet (Con) without Se sources and basal diets supplemented with 0.3 mg Se/kg as SS, SY, or NS, respectively. The results exhibited that Se-supplemented treatments achieved greater egg production, egg weight, and daily egg mass, also better feed conversion ratio than Con group (p < 0.05). Se supplementation significant increased egg Se concentration and decreased the egg Se deposition efficiency (p < 0.05), while SY or NS supplementation had higher Se deposition efficiency than SS group at 35 days (p < 0.05). Moreover, serum glutathione peroxidase (GSH-Px) activity increased in SS or NS group compared to Con group (p < 0.05). The glutathione peroxidase 4 (GPX-4) mRNA levels in liver were significantly higher (p < 0.05) in SS or SY group than in NS group, and mRNA levels of the methionine (Met) metabolism gene glycine N-methyltranserfase (GNMT) were markedly upregulated (p < 0.05) in SY group compared to SS or NS group. Taken together, the results revealed Se from SY is deposited into eggs more efficiently than Se from NS or SS, probably via enhancing the route of Met metabolism. Meanwhile, it might be concluded that SS or SY supplementation directly regulated GSH-Px activity via enhancing GPx4 level, whereas NS via GPx1, thus affecting body oxidation and development.
KeywordsSelenium yeast Nano-selenium Antioxidant capacity Egg selenium concentration Laying hens
This research received financial support from national key research and development program of China (2016YFD0501200, 2016YFD0200900, 2016YFD0500500), Agricultural innovation project of Hunan Province (2017YC03) and Science and Technology Service Network Initiative program of Chinese Academy of Sciences.
Compliance with ethical standards
The methods used in this study were approved by the Animal Care Committee of the Institute of Subtropical Agriculture at the Chinese Academy of Science.
- 18.Chantiratikul A, Chinrasri O, Chantiratikul P (2017) Effect of selenium from selenium-enriched kale sprout versus other selenium sources on productivity and selenium concentrations in egg and tissue of laying hens. Biol Trace Elem Res 182:105–110. https://doi.org/10.1007/s12011-017-1069-0 CrossRefGoogle Scholar
- 23.Qin SY, Chen F, Guo YG, Huang BX, Zhang JB, Ma JF (2014) Effects of nano-selenium on kindey selenium contents, glutathione peroxidase activities and GPx-1 mRNA expression in mice. Adv Mater Res 1051:383–387 https://doi.org/10.4028/www.scientific.net/AMR.1051.383 CrossRefGoogle Scholar
- 24.Cantor AH, Moorhead PD, Musser MA (1982) Comparative effects of sodium selenite and selenomethionine upon nutritional muscular-dystrophy, selenium-dependent glutathione-peroxidase, and tissue selenium concentrations of Turkey poults. Poult Sci 61:478–484. https://doi.org/10.3382/ps.0610478 CrossRefGoogle Scholar
- 26.Boostani A, Sadeghi AA, Mousavi SN, Chamani M, Kashan N (2015) Effects of organic, inorganic, and nano-Se on growth performance, antioxidant capacity, cellular and humoral immune responses in broiler chickens exposed to oxidative stress. Livest Sci 178:330–336. https://doi.org/10.1016/j.livsci.2015.05.004 CrossRefGoogle Scholar
- 31.Kurz B, Jost B, Schünke M (2002) Dietary vitamins and selenium diminish the development of mechanically induced osteoarthritis and increase the expression of antioxidative enzymes in the knee joint of STR/1N mice. Osteoarthr Cartil 10:119–126. https://doi.org/10.1053/joca.2001.0489 CrossRefGoogle Scholar