Organic selenium and tocopherol supplementation for multiparous sows without adiabatic cooling: Effects on performance, milk composition, and serum antioxidant enzymes

• Published in: Animal feed science and technology 2024-01, Vol.307, p.115848, Article 115848
• Main Authors: Andrade, Tiago Silva, Watanabe, Pedro Henrique, de Mendonça, Ingrid Barbosa, Vieira, Eloisa Helena Mendes, Araújo, Gabriel Gobira de Alcântara, Vasconcelos, Deborah Marrocos Sampaio, Silva, Bruno Alexander Nunes, Freitas, Ednardo Rodrigues
• Format: Article
• Language: English
• Subjects: antioxidants; blood serum; body temperature; climate; cooling; dietary supplements; feeds; glutathione peroxidase; humidity; milk composition; neck; reproductive performance; respiratory rate; selenium; superoxide dismutase; technology
• ISSN: 0377-8401
• DOI: 10.1016/j.anifeedsci.2023.115848

The aim of this study was to evaluate the effects of dietary supplementation of organic selenium (Se) and tocopherol to peak producing and older sows without adiabatic cooling on physiological parameters, reproductive performance, milk composition, litter performance, and serum antioxidant enzymes. A total of 96 sows were allotted in a 4 × 2 factorial arrangement, with 4 experimental groups and 2 parity orders (3–4th and above 5th). The experimental groups consisted of: ACCon – sows with adiabatic cooling and fed with control diet; WACCon – sows without adiabatic cooling and fed with control diet; WACSe – sows without adiabatic cooling with dietary supplementation of 0.3 mg/kg organic Se; WACSeE – sows without adiabatic cooling with dietary supplementation of 0.3 mg/kg organic Se and 90 UI of tocopherol. During the experimental period, the average temperature and humidity were 27.8 °C and 78.4%, respectively. Sows that received adiabatic cooling had lower respiratory rate, rectal temperature, and neck temperature when compared to the others sows (P < 0.05). Sows supplemented with organic Se and tocopherol had shorter wean-to-estrus interval than those not supplemented (P < 0.05). Sows supplemented with organic Se and tocopherol had higher concentrations of glutathione peroxidase (GSH-Px) in relation to the other experimental groups and higher levels of superoxide dismutase (SOD) than non-supplemented sows (P < 0.05). Piglets from sows supplemented with organic Se and tocopherol showed higher levels of GSH-Px and SOD in relation to the other experimental groups (P < 0.05). Under equatorial climate conditions, dietary supplementation of organic Se and tocopherol for multiparous sows reduces wean-to-estrus interval and increase expression of enzymatic antioxidant of sows and piglets.