89786 20210902121700.0 doi 10.3390/ani10030520 sideral 117897 ART-2020-117897 eng Robles Jimenez, L.E. Milk production of lacaune sheep with different degrees of crossing with manchega sheep in a commercial flock in Spain 2020 Access copy available to the general public Unrestricted The objective of the present study was to evaluate the effect of the grade of crossbreeding (Lacaune x Manchega) and environmental factors on milk production in a commercial flock in Spain. A total of 5769 milk production records of sheep with different degrees of purity of the Lacaune breed crossed with Manchega were used as follows: 100% Lacaune (n = 2960), 7/8 Lacaune (n = 502), 13/16 Lacaune (n = 306), 3/4 (n = 1288), 5/8 Lacaune (n = 441) and 1/2 Lacaune: Manchega (n = 272). Additional available information included the number of parity (1 to 8), litter size (single or multiple), and the season of the year of lambing (spring, summer, autumn and winter). A mixed model was used to evaluate the level of crossbreeding and environmental factors on milk production. The 100% Lacaune sheep presented the highest milk production with respect to the F1 Lacaune x Manchega sheep (p < 0.01), showing that as the degree of gene absorption increases with the Manchega breed, it presents lower milk yield. The 100%, 13/16, and 3/4 Lacaune genotypes had the highest milk yields with respect to the 1/2 Lacaune/Manchega breed (p < 0.001). The Lacaune registered on average 181.1 L in a period adjusted to 160 days of lactation (1.13 L/ day). Likewise, the parity number, litter size, and season of lambing effects showed significant differences (p < 0.01). It was concluded that 13/16 and 3/4 Lacaune/Manchega ewes presented the highest milk yields with respect to the other crosses. info:eu-repo/semantics/openAccess by http://creativecommons.org/licenses/by/3.0/es/ 2.752 2020 VETERINARY SCIENCES 19 / 146 = 0.13 2020 Q1 T1 AGRICULTURE, DAIRY & ANIMAL SCIENCE 13 / 63 = 0.206 2020 Q1 T1 0.583 2020 Veterinary (miscellaneous) 2020 Q1 Animal Science and Zoology 2020 Q1 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Angeles Hernandez, J.C. Palacios, C. Abecia, J.A. Universidad de Zaragoza (orcid)0000-0003-2827-3054 Naranjo, A. Avalos, J.O. Gonzalez-Ronquillo, M. 2008 700 Universidad de Zaragoza Dpto. Produc.Animal Cienc.Ali. Área Producción Animal 10, 3 (2020), 520 Animals (Basel) Animals 2076-2615 444690 http://zaguan.unizar.es/record/89786/files/texto_completo.pdf Versión publicada 505125 http://zaguan.unizar.es/record/89786/files/texto_completo.jpg?subformat=icon icon Versión publicada oai:zaguan.unizar.es:89786 articulos driver 2021-09-02-09:13:29 ARTICLE