000170406 001__ 170406
000170406 005__ 20260420103354.0
000170406 0247_ $$2doi$$a10.1016/j.smallrumres.2026.107767
000170406 0248_ $$2sideral$$a148873
000170406 037__ $$aART-2026-148873
000170406 041__ $$aeng
000170406 100__ $$aContreras-Solís, I.
000170406 245__ $$aAssessment of milk production in Assaf ewes born as twin based on correspondence analyses and mixed model
000170406 260__ $$c2026
000170406 5060_ $$aAccess copy available to the general public$$fUnrestricted
000170406 5203_ $$aThe aim of this study was to determine whether the presence and number of male and female twins affected the future milk yields of female ewes in adulthood. The study was based on 10,049 milk production records from 12 dairy sheep farms in Spain. Total milk yield (TMY) was categorized as either Low or High, and daily milk yield (DMY) was categorized as either Low/1, Intermediate-low/2, Intermediate-high/3, or High/4. Twins were categorized as follows: (1) ewes born without a twin (0 T), (2) ewes born with at least one female twin (at least 1FT: 1 and 2 sisters), (3) at least one male twin (at least 1MT: 1 and 2 brothers), or (4) with one male and one female twin (1MT+1FT: one brother and sister). Correspondence analyses indicated that ewes in the 0 T group were associated with low TMY and DMY, and twin births (at least 1MT and 1FT groups) were associated with 2–4TMY levels, and 3–4DMY levels. Mixed-effect-model indicated that ewes in the at least 1MT group had a positive effect on TMY (P < 0.05) and DMY (P < 0.01), than did ewes in the 0 T group. In summary, litter size and litter sex ratio in intrauterine life had a positive effect on milk production in ewes in adulthood. This effect is positively evidenced in ewes born with at least one-male-twins. This information might be useful in identifying ways to improve the economic-productive efficiency of sheep dairy systems.
000170406 540__ $$9info:eu-repo/semantics/openAccess$$aby-nc-nd$$uhttps://creativecommons.org/licenses/by-nc-nd/4.0/deed.es
000170406 655_4 $$ainfo:eu-repo/semantics/article$$vinfo:eu-repo/semantics/publishedVersion
000170406 700__ $$0(orcid)0000-0003-2827-3054$$aAbecia, J.A.$$uUniversidad de Zaragoza
000170406 700__ $$aPalacios, C.
000170406 7102_ $$12008$$2700$$aUniversidad de Zaragoza$$bDpto. Produc.Animal Cienc.Ali.$$cÁrea Producción Animal
000170406 773__ $$g259 (2026), 107767 [4 pp.]$$pSmall rumin. res.$$tSmall Ruminant Research$$x0921-4488
000170406 8564_ $$s1221360$$uhttps://zaguan.unizar.es/record/170406/files/texto_completo.pdf$$yVersión publicada
000170406 8564_ $$s2496402$$uhttps://zaguan.unizar.es/record/170406/files/texto_completo.jpg?subformat=icon$$xicon$$yVersión publicada
000170406 909CO $$ooai:zaguan.unizar.es:170406$$particulos$$pdriver
000170406 951__ $$a2026-04-18-10:48:58
000170406 980__ $$aARTICLE