02792naa a2200553 a 450000100080000000500110000800800410001902200140006002400600007410000220013424501570015626000090031352012440032265000210156665000240158765000280161165000090163965000160164865000140166465000150167865000170169365000120171065000140172265000160173665000220175265000110177465000160178565000230180165000180182465000160184265000170185865000290187565000150190465000100191965000150192965000240194465000110196865000180197965300200199770000220201770000220203970000190206170000230208070000200210370000170212370000150214070000230215577300600217821873222026-06-02       2026    bl uuuu     u00u1 u    #d  a0378-43207 ahttps://doi.org/10.1016/j.anireprosci.2026.108178.2DOI1 aPFEIFER, L. F. M.  aUterine inflammation did not compromise fertility in young primiparous Bos indicus cows enrolled in postpartum timed AI programs.h[electronic resource]  c2026  aABSTRACT - Although, previous study indicated that postpartum uterine inflammation was more pronounced in young primiparous (YP) Bos indicus cows, no study evaluated the impact of this inflammation on the fertility of these young cows included in timed artificial insemination (TAI) protocols. The objective of this study was to determine the effect of postpartum uterine inflammatory status on pregnancy per artificial insemination (P/AI) in YP Bos indicus beef cows subjected to TAI protocols. Postpartum Nelore Bos indicus YP cows (n = 151), 26.8 ± 1.8 months old were used in this study. On Day 0 of the Timed AI (TAI) protocol, cows were categorized in two groups according to the PMN proportions and vaginal discharge, as follows: 1) Healthy cows (n = 79), cows with ≤ 5% PMN and PVD ≤ 1; 2) Cows with endometritis (n = 72), cows with &gt 5% PMN and/or PVD &gt 1. The relative abundance of mRNA transcripts for IL1B was higher (P = 0.02) in cows with endometritis than in healthy cows. The P/AI in healthy cows was 58.2%, and in cows with endometritis was 58.3% (P = 0.99). The results of the study suggest that uterine inflammation at the onset of TAI programs is not detrimental to fertility in YP postpartum Bos indicus cows.  aAnimal fertility  aAnimal reproduction  aArtificial insemination  aBeef  aBeef cattle  aBeef cows  aConception  aInflammation  aNellore  aOvulation  aParturition  aPostpartum period  aUterus  aBos Indicus  aFertilidade Animal  aGado de Corte  aGado Nelore  aInflamação  aInseminação Artificial  aOvulação  aParto  aPós-Parto  aReprodução Animal  aÚtero  aVaca de Corte  aTaxa de prenhez1 aLACOUTH, K. L. S.1 aANDRADE, J. de S.1 aBARBOSA, I. P.1 aSILVA, S. A. de s.1 aSILVA, R. R. da1 aNOGUEIRA, E.1 aSTERZA, F.1 aFERREIRA, L. C. L.  tAnimal Reproduction Sciencegv. 290, 108178, July 2026.