RT info:eu-repo/semantics/article
T1 Effect of Season and Parity on Reproduction Performance of Iberian Sows Bred with Duroc Semen
A1 Piñán, Javier
A1 Alegre Gutiérrez, Beatriz
A1 Kirkwood, Roy N.
A1 Soriano Úbeda, Cristina de las Mercedes
A1 Maj, Magdalena
A1 Domínguez Fernández de Tejerina, Juan Carlos
A1 Manjarín Arredondo, Rodrigo
A1 Martínez Pastor, Felipe
A2 Medicina y Cirugia Animal
K1 Veterinaria
K1 Iberian
K1 Gilt
K1 Sow
K1 Duroc boar
K1 Artificial insemination
K1 Fertility
K1 Prolificacy;
K1 Parity;
K1 Seasonality
K1 Cosinor
K1 3109 Ciencias Veterinarias
AB [EN] 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
PB MDPI
LK https://hdl.handle.net/10612/18536
UL https://hdl.handle.net/10612/18536
NO Piñán, J., Alegre, B., Kirkwood, R. N., Soriano-úbeda, C., Maj, M., Domínguez, J. C., Manjarín, R., & Martínez-Pastor, F. (2021). Effect of season and parity on reproduction performance of iberian sows bred with duroc semen. Animals, 11(11). https://doi.org/10.3390/ANI11113275
DS BULERIA. Repositorio Institucional de la Universidad de León
RD 19-may-2024