Javier Piñán, B. Alegre, Roy N. Kirkwood, Cristina Soriano‐Úbeda, Magdalena Maj, Juan Carlos Domínguez Fernández de Tejerina, Rodrigo Manjarín, Felipe Martínez‐Pastor,
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, ...
Tópico(s): Effects of Environmental Stressors on Livestock
2021 - Multidisciplinary Digital Publishing Institute | Animals
José Ngula, Rodrigo Manjarín, Felipe Martínez‐Pastor, B. Alegre, Isabel Tejedor, Tivon Brown, Javier Piñán, Roy N. Kirkwood, Juan Carlos Domínguez Fernández de Tejerina,
The objective of this study was to determine effects of a novel seminal supplement, SuinFort, on fertility of multiparous sows. For 2 years, a total of 1159 sows were assigned to be artificial inseminated (AI) either with semen supplemented with the additive (2 IU oxytocin, 5 μg lecirelin, 2 mM caffeine, n = 830 AI) or with no supplementation (Control, n = 2422 AI). The supplement was included 15 min before insemination. Supplementation with SuinFort resulted in greater fertility both by increasing farrowing ...
Tópico(s): Animal Behavior and Welfare Studies
2019 - Elsevier BV | Animal Reproduction Science
Rodrigo Manjarín, José Ngula, Felipe Martínez‐Pastor, B. Alegre, Tivon Brown, Javier Piñán, Roy N. Kirkwood, Juan Carlos Domínguez Fernández de Tejerina,
Maximizing reproductive output during the sow’s lifetime decreases production costs in commercial breeding herds. Artificial insemination (AI) provides sanitary and zootechnical benefits over natural mating but can be associated with a decrease in sow reproductive performance; it has been suggested that inadequate stimulation of the sow during AI may compromise myometrial contractions, impairing sperm transport to the oviduct sperm reservoir and so potentially reducing subsequent fertilization rate ...
Tópico(s): Animal Behavior and Welfare Studies
2018 - Oxford University Press | Journal of Animal Science
Javier Piñán, Felipe Martínez‐Pastor, B. Alegre, Magdalena Maj, Roy N. Kirkwood, Juan Carlos Domínguez Fernández de Tejerina, Rodrigo Manjarín,
Suinfort®, a commercial semen supplement demonstrated to increase fertility and litter size in commercial sows, was tested to improve reproductive performance in Iberian sows. A total of 1430 Iberian sows were artificially inseminated (AI) with semen from Duroc boars and assigned by parity to receive the seminal additive Suinfort® containing 2 IU oxytocin, 5 µg lecirelin, and 2 mM caffeine (SF; n = 1713 AI), or to serve as non-supplemented controls (CON; n = 2625 AI). CON showed a lower fertility comparing ...
Tópico(s): Insect and Pesticide Research
2021 - Multidisciplinary Digital Publishing Institute | Animals