ArticleThe Journal of veterinary medical science2019
Factors affecting estrus and ovulation time in weaned sows with induced ovulation by GnRH administration in different seasons.
Article in The Journal of veterinary medical science, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 12 papers.
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Who cites it
12 citing papers in PubMed, 29 citations in OpenAlex.
- Buserelin Improves Ovulation-Embryo Synchrony Compared With hCG After eCG-Induced Superovulation in Donor Sows.Reproduction in domestic animals = Zuchthygiene · 2026Article
- Delayed ovulation in cattle: Physiological mechanisms, diagnostic approaches, and reproductive management strategies.Veterinary world · 2026Article
- Effects of synthetized porcine follicle-stimulating hormone and synthetized human chorionic gonadotropin on reproductive efficiency in pigs.Porcine health management · 2025Article
- Buserelin shortens the estrus-to-ovulation interval and improves the pregnancy outcomes in gilts treated with a fixed-time artificial insemination.Frontiers in veterinary science · 2025Article
- Research Progress on the Impact of Human Chorionic Gonadotropin on Reproductive Performance in Sows.Animals : an open access journal from MDPI · 2024Review
- Productive and metabolomic consequences of arginine supplementation in sows during different gestation periods in two different seasons.Journal of animal science and biotechnology · 2024Article
- Supplementing a carbohydrate-rich diet from late lactation to insemination increased glucose and insulin levels in weaned sows, leading to improved subsequent piglet birth weight.The Journal of veterinary medical science · 2024Article
- Article
- Season and temperature do not affect cumulative live birth rate and time to live birth inFrontiers in endocrinology · 2023Article
- Timing and temperature thresholds of heat stress effects on fertility performance of different parity sows in Spanish herds.Journal of animal science · 2021Article
- Single Fixed-Time Post-Cervical Insemination in Gilts with Buserelin.Animals : an open access journal from MDPI · 2021Article
- Weaned Sows with Small Ovarian Follicles Respond Poorly to the GnRH Agonist Buserelin.Animals : an open access journal from MDPI · 2020Article
Corrections and comments
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Authors and funding
4 authors at 2 institutions in 2 countries.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Follicle development in post-weaning sows is influenced by various factors. To control ovulation time using hormone, factors that influence ovulation should be investigated. The present study was performed to evaluate the effect of GnRH (buserelin) administration in relation to season and sow parameters on ovulation time in weaned sows. Seventy-seven weaned sows were divided into the following groups: control (hot season, n=21; cool season, n=16) and treatment (hot season, n=22; cool season, n=18). Sows were kept in a close house equipped with an evaporative cooling system. Ovulation time was determined every 6 hr using transrectal ultrasonography. Administration of 10 µg buserelin at 72 hr after weaning affected estrus-to-ovulation interval (EOI) and weaning-to-ovulation interval (WOI) in sows (P<0.05). The percentage of sows that ovulated between 44-56 hr after injection was higher in the cool season than in hot season (P<0.05). Weaning-to-estrus interval (WEI) and injection-to-estrus interval (IEI) were affected by season (P<0.05). Body condition score (BCS) of sows influenced EOI (P<0.01). Sows with low backfat thickness, lactation length <20 days, or litter weight ≥67 kg, had delayed injection-to-ovulation interval (P<0.05). In conclusions, buserelin administration (10 µg, at 72 hr after weaning) advanced ovulation. Hot season prolonged ovulation time. Sows that were weaned with lactation length of at least 20 days, litter weight less than 67 kg, or BCS of at least 3, had better responses to buserelin injection. High backfat reserve after weaning is important for ovulation induction response by buserelin injection.
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