ArticleAnimals : an open access journal from MDPI2021
Effect of Season and Parity on Reproduction Performance of Iberian Sows Bred with Duroc Semen.
Article in Animals : an open access journal from MDPI, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 6 papers.
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Who cites it
6 citing papers in PubMed.
- Managing Seasonal Infertility in Sows: Parity and Farm-Specific In-Barn Environmental Predictors of Reproductive Performance.Veterinary sciences · 2026Article
- Comparative Analysis of the Oviducts in Wanyue Black Pigs with Different Parities Based on RNA-Seq.Veterinary sciences · 2025Article
- Statistical Analysis of Reproductive Traits in Jinwu Pig and Identification of Genome-Wide Association Loci.Genes · 2025Article
- Evolution of Sow Productivity and Evaluation Parameters: Spanish Farms as a Benchmark.Veterinary sciences · 2024Article
- Assessing reproductive performance and predictive models for litter size in Landrace sows under tropical conditions.Animal bioscience · 2024Article
- Influence of age and seasonality on boar seminal plasma steroids quantification: A preliminary study.Veterinary world · 2023Article
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8 authors.
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Abstract
The Iberian pig is an autochthonous breed from the Iberian Peninsula highly valued for its meat. The sows are often bred as Iberian × Duroc crossings for increased efficiency. Since sow parity and season affect the reproductive performance, we evaluated two-year records from a commercial farrow-to-finish farm (live, stillborn, and mummified piglets after artificial insemination, AI). A total of 1293 Iberian sows were inseminated with semen from 57 boars (3024 AI). The effects of parity (gilts, 1, 2-4, 5-10, and >10 farrowings) and season were analyzed by linear mixed-effects models (LME). The data were fitted to cosinor models to investigate seasonal effects within parity groups. The effects of maximum daily temperature (MDT) and day length change (DLC) during spermatogenesis, pre-AI, and post-AI periods were analyzed with LME. The 2-4 group was the optimal one for parity. A seasonal effect was evident between spring-summer (lower fertility/prolificacy) and autumn-winter (higher). Cosinor showed that the seasonal drop in reproductive performance occurs earlier in Iberian sows than in other breeds, more evident in gilts. MDT negatively affected performance in all periods and DLC in spermatogenesis and pre-AI. These results are relevant for the improvement of Iberian sows' intensive farming.
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