Porras González, NéstorRebollada Merino, AgustínBárcena Asensio, CarmenMayoral Alegre, Francisco J.Domínguez Rodríguez, LucasRodríguez Bertos, AntonioLomillos Pérez, Juan ManuelProducción Científica UCH 2021UCH. Departamento de Producción y Sanidad Animal, Salud Pública Veterinaria y Ciencia y Tecnología de los Alimentos2022-03-102022-03-102021-04-09Porras, N., Rebollada-Merino, A., Bárcena, C., Mayoral-Alegre, F.J., Lomillos, J.M., Domínguez, L. & Rodríguez-Bertos, A. (2021). Effect of biscuit flour and fermented defatted “Alperujo” co-administration on intestinal mucosa morphology and productive performance in laying hens. Animals, vol. 11, i. 4 (09 apr.), art. 1075. DOI: https://doi.org/10.3390/ani110410752076-2615 (Electrónico)http://hdl.handle.net/10637/13481Este artículo se encuentra disponible en la siguiente URL: https://www.mdpi.com/2076-2615/11/4/1075Este artículo pertenece a la colección "Poultry Feeding and Gut Health".In this study, the effects of co-administration with biscuit flour and fermented defatted “alperujo” (FDA) on gut health were evaluated in a batch of laying hens (Hy-Line 2015) on a commercial farm. Animals were divided into two groups: control group and treatment group; and histological and morphometric analyses of all sections of the intestine (duodenum, jejunum, ileum, cecum and rectum) were performed at 10, 18, 25, 50 and 75 weeks of age. During the whole productive period, a decrease in the mortality rate (p = 0.01) was observed in treated hens, as well as an increase in the number of eggs produced (p < 0.001), their size (p < 0.025), and weight (p < 0.024). In the early and late stages of production (10, 18 and 50 weeks), a significant increase (p < 0.001) in the height and depth of the intestinal villi was observed in the treatment group. Villi height was also significantly higher (p < 0.001) in the treatment group up to week 50 in the cecum, and at weeks 18 and 50 in the rectum. We concluded that an economical and sustainable feeding system with less environmental impact, such as co-supplementation with biscuit flour and FDA, could maintain gut health without negatively impacting laying hens’ productive performance.application/pdfenopen accessOlive oil.Gallinas ponedoras - Alimentación.Hens - Feeding and feeds.Gallinas ponedoras - Aparato digestivo.Animal feeds.Gallinas ponedoras - Cría y explotación.Hens - Breeding.Aceite de oliva.Alimentos para animales.Hens - Digestive organs.Artículohttps://creativecommons.org/licenses/by-nc-nd/4.0/deed.es