Hydroxy-selenomethionine as an organic source of selenium in the diet improves boar reproductive performance in artificial insemination programs
| Autor: | Giulia Kiyomi Vechiato Kawai, Cristian Hernando Garcia Martinez, Diego V. Alkmin, Denis Hideki Nakasone, Marcilio Nichi, Maitê Vidal Mendonça, Ana Paula Pinoti Pavaneli, Simone Maria Massami Kitamura Martins, Ana Carolina Pedrosa, Ken K Nagai, Garros do Valle Fontinhas-Netto, André Furugen Cesar de Andrade, Naiara Simarro Fagundes |
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| Rok vydání: | 2021 |
| Předmět: |
Litter (animal)
Male endocrine system BOAR Swine medicine.medical_treatment chemistry.chemical_element Semen Biology Semen quality Selenium Animal science Pregnancy Genetics medicine Animals Selenomethionine Insemination Artificial MINERAIS NA DIETA urogenital system Artificial insemination Reproduction General Medicine Spermatozoa Diet Semen Analysis Pregnancy rate chemistry Sperm Motility Animal Science and Zoology Female Spermatogenesis Food Science |
| Zdroj: | Repositório Institucional da USP (Biblioteca Digital da Produção Intelectual) Universidade de São Paulo (USP) instacron:USP J Anim Sci |
| Popis: | This study aimed to compare different selenium (Se) sources in the diet on boar's semen quality and fertility. For this, 28 boars aged 8 to 28 months were fed with the following dietary treatments for 95 days: 0.3 mg Se/kg as sodium selenite (SS, n = 14) and 0.3 mg Se/kg as hydroxy-selenomethionine (OH-SeMet, n = 14). During this period, two experiments were carried out. In experiment 1, the semen of all boars was evaluated every 2 weeks. Raw semen was initially evaluated for the processing of seminal doses, which were stored at 17 °C for 72 h, followed by sperm quality assessments. Furthermore, Se concentration and glutathione peroxidase (GPx) activity were measured in the seminal plasma. In experiment 2, 728 females were inseminated weekly with seminal doses from boars of the different experimental groups to further assess in vivo fertility and litter characteristics. Results demonstrated that boars fed OH-SeMet had more Se in their seminal plasma (p < 0.05), showing the greater bioavailability of the organic source in the male reproductive system. Moreover, boars fed OH-SeMet tended (p < 0.10) towards a higher total sperm count in the ejaculate (66.60 vs. 56.57 × 10 9 sperm), and the number of seminal doses (22.11 vs. 18.86; 3 × 10 9 sperm/dose) when compared to those fed SS. No effect of the dietary treatments was observed on GPx activity in seminal plasma (p > 0.05), as well as on raw and stored semen quality (p > 0.05). Under in vivo conditions, seminal doses from boars fed OH-SeMet tended (p < 0.10) towards a higher pregnancy rate at weeks 3, 5, and 8, and also resulted in a higher (p < 0.05) percentage of pregnant females in the overall period (99.30 vs. 97.00). In conclusion, the replacement of SS with OH-SeMet in boars' diet can improve sperm production and results in better reproductive performance for them, bringing greater productivity and profitability to artificial insemination centers and commercial pig farms. |
| Databáze: | OpenAIRE |
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