Predictive capacity of boar sperm morphometry and morphometric sub-populations on reproductive success after artificial insemination

Barquero, V. ; Roldan, E.R.S. ; Soler, C. ; Yániz, J.L. (Universidad de Zaragoza) ; Camacho, M. ; Valverde, A.

Resumen: The aim of the study was to compare the morphometric features of sperm head size and shape from the Pietrain line and the Duroc × Pietrain boar crossbred terminal lines, and to evaluate their relationship with reproductive success after artificial insemination of sows produced from crossbreeding the York, Landrace and Pietrain breeds. Semen samples were collected from 11 sexually mature boars. Only ejaculates with greater than 70% motility rate and <15% of abnormal sperm were used for artificial inseminations (AI) and included in the study. Samples were analyzed using an ISAS®v1 computer-assisted sperm analysis system for eight morphometric parameters of head shape and size (CASA-Morph). Sub-populations of morphometric ejaculates were characterized using multivariate procedures, such as principal component (PC) analysis and clustering methods (k-means model). Four different ejaculate sub-populations were identified from two PCs that involved the head shape and size of the spermatozoa. The discriminant ability of the different morphometric sperm variables to predict sow litter size was analyzed using a receiver operating characteristics (ROC) curve analysis. Sperm head length, ellipticity, elongation, and regularity showed significant predictive capacity on litter size (0.59, 0.59, 0.60, and 0.56 area under curve (AUC), respectively). The morphometric sperm sub-populations were not related to sow litter size.

Idioma: Inglés

DOI: 10.3390/ani11040920

Año: 2021

Publicado en: Animals 11, 4 (2021), 920 [15 pp]
ISSN: 2076-2615

Factor impacto JCR: 3.231 (2021)

Categ. JCR: VETERINARY SCIENCES rank: 16 / 145 = 0.11 (2021) - Q1 - T1
Categ. JCR: AGRICULTURE, DAIRY & ANIMAL SCIENCE rank: 13 / 63 = 0.206 (2021) - Q1 - T1

Factor impacto CITESCORE: 2.7 - Veterinary (Q2) - Agricultural and Biological Sciences (Q2)

Factor impacto SCIMAGO: 0.61 - Veterinary (miscellaneous) (Q1) - Animal Science and Zoology (Q1)

Tipo y forma: Artículo (Versión definitiva)

Área (Departamento): Área Producción Animal (Dpto. Produc.Animal Cienc.Ali.)