RT info:eu-repo/semantics/article T1 Conventional feed-grade or slow-release coated urea as sources of dietary nitrogen for fattening lambs A1 Saro, Cristina A1 Degeneffe, Miguel Alonso A1 Andrés, Sonia A1 Mateo, Javier A1 Caro Canales, Irma A1 López Ferreras, Lorena A1 Horst, Egon Henrique A1 López, Secundino A1 Giráldez, Francisco Javier K1 Lambs K1 Corderos - Cría y explotación K1 Ganado lanar - Cría y explotación K1 Sheep - Breeding K1 Ovejas - Alimentación K1 Urea K1 Feed efficiency K1 Nutrition K1 Animal nutrition K1 Fermentation K1 Fermentación K1 Animals - Food K1 Alimentos para animales K1 Meat K1 Carne K1 Veterinary medicine K1 3104.07 Ovinos K1 3109.06 Nutrición K1 3109 Ciencias Veterinarias K1 3309 Tecnología de Los Alimentos AB Simple Summary: Reducing the environmental impact and the use of plant foods in animal feeding are current challenges of ruminant production systems. The use of non-protein nitrogen, especially urea, allows reducing the use of protein supplements of vegetable origin, which contributes to reducing both the competition for nutritional resources between humans and other animal species and the water and carbon footprints. This article provides new knowledge, comparing feed-grade conventional urea and slow-release urea under the conditions of intensive fattening of lambs, characterized by use of compound feed with a high content of starch-rich feeds. Our results suggest that replacing conventional feed-grade urea with slow-release urea in the diet of Assaf fattening lambs does not improve the feed efficiency, metabolic profile, or carcass or meat characteristics, and increases the feeding costs. PB MDPI SN 2076-2615 YR 2023 FD 2023 LK https://uvadoc.uva.es/handle/10324/67914 UL https://uvadoc.uva.es/handle/10324/67914 LA eng NO Animals, 2023, Vol. 13, Nº. 22, 3465 NO Producción Científica DS UVaDOC RD 07-ago-2024