Uterine health and fertility of timed AI postpartum Nelore beef cows raised in the Amazon biome

Andrade, Jéssica de Souza; Moreira, Elizângela Mírian; Silva, George Moreira da; Schneider, Augusto; Nunes, Vanessa Rachele Ribeiro; Silva, Renata Reis da; Pfeifer, Luiz Francisco Machado

doi:10.1016/j.livsci.2021.104528

Cited by 1 publication

(3 citation statements)

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“…Contrary to the observations in PP cows, PVD and PMN decreased over time after calving in older PC and MC cows. Similarly, several studies have observed that uterine inflammation decreases over time after calving in dairy (Prunner et al., 2014; Tanai et al., 2020) and beef cows (Andrade et al., 2021; Pfeifer et al., 2018; Santos et al., 2009). Multiparous cows had only 0.6% PMN cells in their uterus on 35 DPP.…”

Section: Discussionmentioning

confidence: 89%

“…Although, several studies have characterized NEB and postpartum uterine health in dairy cows (Galvao & Santos, 2010;Gilbert et al, 1993;Krause et al, 2014;Leblanc, 2012), few have assessed the association between postpartum metabolism and uterine health in Bos indicus beef cows raised under extensive tropical conditions (Andrade et al, 2021;Oliveira Filho et al, 2022;Pfeifer et al, 2018).…”

Section: Introductionmentioning

confidence: 99%

“…Although, several studies have characterized NEB and postpartum uterine health in dairy cows (Galvao & Santos, 2010; Gilbert et al., 1993; Krause et al., 2014; Leblanc, 2012), few have assessed the association between postpartum metabolism and uterine health in Bos indicus beef cows raised under extensive tropical conditions (Andrade et al., 2021; Oliveira Filho et al., 2022; Pfeifer et al., 2018). To the best of our knowledge, studies comparing the postpartum uterine health of primiparous precocious (~24 months), primiparous conventional (>36 months), and multiparous conventional Bos indicus cows are scarce.…”

Section: Introductionmentioning

confidence: 99%

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Exploring uterine inflammation in postpartum primiparous precocious and conventional and multiparous Bos indicus beef cows

Andrade,

Moreira,

de Souza

et al. 2023

Reprod Domestic Animals

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This study aimed to compare the postpartum uterine dynamics of primiparous precocious (PP), primiparous conventional (PC) and multiparous conventional (MC) Bos indicus beef cows. For this purpose, PP (n = 8), PC (n = 18) and MC (n = 12) cows were enrolled in this study. These cows were evaluated at 20 and 10 days prepartum and weekly from parturition to 42 days postpartum (DPP). During this period, body weight (BW), subcutaneous fat thickness (SFT) and serum concentrations of glucose, β‐hydroxybutyrate, albumin and haptoglobin were measured. Proportion of polymorphonuclear (PMN) cells, and abundance of mRNA transcripts of genes involved in uterine inflammation and uterine health were evaluated. The PP cows had lower (p < .05) BW and SFT than that for PC and MC cows during the study period. The serum concentration of albumin after 35 DPP was lower (p < .05) in PP cows. The PP cows had the highest proportion of PMN on 28 and 35 DPP compared to PC and MC cows. The relative mRNA abundance of IL‐1β and IL‐8 increased after 21 DPP in PP cows compared to the other groups. The PC had the highest, MC had an intermediate, and PP cows had the lowest relative abundance of IL10 mRNA. Overall, these findings indicated that uterine inflammation was more pronounced in PP cows. Moreover, based on the proportion of PMN and abundance of transcripts associated with inflammation in the uterus, PP cows may require a longer period to recover their uterine health after calving.

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