Influence of peripartum on the erythrogram of Holstein dairy cows

Abstract

Background Peripartum is a challenging phase for the health of cows. Objectives This study analysed the haematological profile of Holstein cows during peripartum. Method Blood samples were collected on days 18, 12, 8, 5 and 2 before calving, at parturition, and on days 1, 7, 14, 21, 30, 45 and 60 postpartum. Analyses of red blood cell (RBC) count, haemoglobin concentration, haematocrit, mean corpuscular volume, mean corpuscular haemoglobin, mean corpuscular haemoglobin concentration and RBC distribution width were performed; body condition score (BCS) and milk yield were evaluated. Results Red blood cell (the highest value was 6.10 × 10 12 /L at parturition and the lowest recorded value was 5.03 × 10 12 /L 21 days after parturition), haemoglobin and haematocrit (the highest values were 10.48 g/dL and 33.47% at parturition, respectively and the lowest values were 8.28 g/dL and 26.13% on day 30 after parturition, respectively); BCS (the highest and the lowest values were 3.50 points and 2.73 points on days 18 before parturition and 45 after parturition, respectively) and milk production (the lowest and the highest values were 21.48 L and 27.02 L on days 7 and 45 after parturition, respectively) were significantly different ( p < 0.05) during the peripartum period. Of the total cows ( n = 48), 41.7% had RBC, haemoglobin and haematocrit below the reference intervals during at least one collection point during the postpartum period. Conclusion This study demonstrated that dairy cows included in this investigation suffered alterations in select haematological variables during the postpartum period.

Clinical endometritis with Trueperella pyogenes reduces reproductive performance and milk production in dairy cows

“…The BCS assessment reveals the status of the animal's energy reserve and is essential for the indirect monitoring of the negative energy balance (Roche et al., 2009). The evaluation of the BCS during the early post‐partum period contributes to a better understanding of the health status of the herd (Paiano et al., 2020).…”

Retrospective study on the outcomes and risk factors of right paramedian abomasopexy for right abomasal disorders in 47 dairy cows

“…Student’s t -test or Mann-Whitney U -test after the F -test was used for comparisons of blood data between groups. If there were significant differences in blood analysis values between groups, those values were categorized for multivariate logistic regression analysis based on the reference values: Na (133–139 mM [ 8 ]), K (3.6–4.4 mM [ 8 ]), Cl (94.7–103.3 mM [ 8 ]), Hb (8.3–10.5 g/dl [ 22 ]), Ht (26.1–33.5% [ 22 ]) and AG (14–20 mM [ 7 ]). Thereafter, the multivariate association between categorized variables (blood analysis values with differences between groups (if any), presence of abomasal volvulus, clinical experience of surgeons [ 23 ], and presence of complications) and outcomes of therapy were evaluated by logistic regression analysis with the calculation of odds ratios (ORs) and associated 95% confidence intervals (95% CI).…”

Alterations in biochemical profiles and reproduction performance in postpartum dairy cows with metritis

“…(2019) found an incidence of 26.5% with metritis, which could negatively affect the welfare and productivity of the cows (Sheldon et al., 2009). After calving, dairy cows can present nutritional, hormonal and metabolic alterations that contribute to the negative energy balance (NEB) and compromise the immune function (Goff, 2008; Paiano, Birgel, & Birgel Junior, 2020; Paiano et al., 2018; Sordillo, 2016). Reductions in immune response and NEB have been reported in metritic cows from North America (Dervishi et al., 2016) and Europe (Pohl, Burfeind, & Heuwieser, 2015); however, there is a lack of this information in dairy herds in Brazil.…”