Immunologic Profiles of Peripheral Blood Leukocytes and Serum Immunoglobulin G Concentrations in Perinatal Mares and Neonatal Foals (Heavy Draft Horse)

Aoki, Takeshi; Honda, Hayato; Ishii, Mitsuo

doi:10.1016/j.jevs.2013.03.179

Cited by 13 publications

(6 citation statements)

References 32 publications

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“…Significant variations were detected in the hematological and biochemical constituents of Mangalarga Marchador mares in the transition period maintained on pasture. These changes are similar to those found in other studies on mares in different stages of pregnancy, parturition, and lactation (Orozco et al, 2007;Aoki et al, 2013;Meliani et al, 2014). Despite these similarities, it is important to evaluate this horse breed during this period and under this type of management.…”

Section: Discussionsupporting

confidence: 92%

Hematological and biochemical profiles of Mangalarga Marchador mares in the transition period bred on pasture

Silva

Filho

Dantas

et al. 2019

Arq. Bras. Med. Vet. Zootec.

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The present study aimed to evaluate the effects of the transition period on hematological and biochemical constituents in Mangalarga Marchador mares. Forty-eight mares were used to form a maintenance group (MG) and transition group (TG), formed by pregnant mares and, after delivery, infants. Blood samples were collected at the following times: T-60 (60 d pre-delivery), T-30 (30 d pre-delivery), T-15 (15 d predelivery), T0 (first 6h post-delivery), T15 (15 d post-delivery), T30 (30 d post-delivery), and T60 (60 d post-delivery). The TG had lower values (P< 0.05) of red blood cells, hematocrit and hemoglobin at T0, T15, T30 and T60 times than MG. The mean corpuscular volume was lower in MG (P< 0.05) than in TG (T0, T15, T30 and T60) and mean corpuscular hemoglobin concentration was higher (P< 0.05) in MG than in TG (T15, T30 and T60). On the other hand, the diameter distribution of red blood cells presented a lower value (P< 0.05) in MG than in TG (T15 and T30). Mares in transition period presented regenerative anemia. The results demonstrate physiological metabolic variations of different intensities during pregnancy, delivery and early lactation. RESUMOO presente estudo teve como objetivo avaliar os efeitos do período de transição em constituintes hematológicos e bioquímicos em éguas Mangalarga Marchador. Foram utilizadas 48 éguas para formar um grupo de manutenção (GM) e um grupo de transição (GT), composto por éguas gestantes e, após o parto, lactentes. Amostras de sangue foram coletadas nos seguintes tempos: . Éguas em período de transição apresentam anemia regenerativa. Os resultados demonstram variações metabólicas de diferentes intensidades durante a gestação, o parto e o início de lactação.

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Section: Discussionsupporting

confidence: 92%

Hematological and biochemical profiles of Mangalarga Marchador mares in the transition period bred on pasture

Silva

Filho

Dantas

et al. 2019

Arq. Bras. Med. Vet. Zootec.

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“…This occurs only in healthy foals and it is directly related to endogenous steroid production, maturity of the adrenocortical system and consequently the foal's maturity at birth (Rossdale 2004). As previously found in newborn foals (Waelchli et al 1994, Flaminio et al 1999, Smith III et al 2002, Aoki and Ishii 2012, Aoki et al 2013, in this study a progressive increase in lymphocytes during the first month of life was observed. At birth, healthy foals have approximately 2.5 times more neutrophils than lymphocytes, variable number of monocytes, and no eosinophils (Welles 2010).…”

Section: Discussionsupporting

confidence: 89%

“…According to previous studies on periparturient mares (Harvey et al 1994, Aoki et al 2013, Bazzano et al 2014, Mariella et al 2014, our results showed a significant increase in WBC within 24h after foaling. The peak in WBC could be due to physical stress associated with delivery (Aoki et al 2013) and consequent release of cortisol and catecholamine (Davies Morel 1993). A significant rise in blood cortisol concentrations was observed in pregnant mares in the imminence of parturition as well (Nagel et al 2012).…”

Section: Discussionsupporting

confidence: 78%

Leukocyte modifications during the first month after foaling in mares and their newborn foals

Piccione¹,

Rizzo²,

Arfuso³

et al. 2015

Polish Journal of Veterinary Sciences

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During early post-partum period both neonatal foals and peripartum mares are most susceptible to diseases. The aim of this study was to establish physiologic modifications of leukogram during the first month after foaling in mares and their newborn foals. To this end blood samples were collected from nine mares and nine foals (T0-T10), every three days from the 1st day until the 30th day after foaling. Samples were analysed for white blood cell (WBC) count and differential leucocyte counts.Two-way repeated measure analysis of variance (ANOVA) showed, in postpartum mares WBC showed significant higher values at T0 (9.02±0.76) in respect to other time points, and at T2 (8.08±0.53) and T3 (7.92±0.59) compared to T1 (6.98±0.43), whereas in foals lower WBC values at T0 (6.11±0.49) compared to other experimental periods except T1 (6.90±0.94), and at T1 compared to T8 (7.95±0.61) and T10 (7.90±0.36) were observed.The differential leucocyte counts showed significant modifications in the percentage of neutrophils (π<0.001) and lymphocytes (p<0.001) both in postpartum mares and in foals during the experimental period.Furthermore ANOVA showed significant differences between postpartum mares and foals (P<0.01) in all studied parameters, and between postpartum mares and control mares in WBC and neutrophils values.The obtained results provide suitable information about the influence of foaling on leukogram of periparturient mares and reveal WBC dynamics in newborn foals during the first month post-partum.

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“…Similar to several previous studies on foals, the effect of breed or sex, if any, was not included in this study 3 5 10 27 . Previous studies are controversial; the effect of breed and sex is yet to be determined 5 6 .…”

Section: Discussionmentioning

confidence: 99%

Haematological profile in foals during the first year of life

Faramarzi

Rich²

2019

Veterinary Record

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Foals’ haematological values change constantly during their first year of life. The use of updated age-based reference intervals (RIs) is imperative for providing accurate diagnosis and optimum care for sick foals. The authors' objective was to provide updated RIs for 13 haematological values in 2, 7, 14, 30, 90, 180 and 365-day-old foals and to investigate the changes over time in each measured value. Venous blood was collected at those ages from clinically healthy foals. Thirteen haematological values were analysed. The 95% RIs were reported using a bootstrapping method. Differences over time were examined using Friedman test. RIs for each of the measured values were calculated. Results showed noticeable trends in changes over time in several values. Nevertheless, white blood cell counts significantly increased between day 2 and day 90 (P=0.011) while lymphocyte counts increased from day 2 up to day 180 (P=0.033). The mean corpuscular haemoglobin and mean corpuscular volume (P=0.011) significantly decreased between day 2 and day 90. Normal haematological values in foals not only differ from those in adult horses but also change throughout the first year of life; thus, it is critical that clinicians use age-based RIs when treating sick foals.

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Immunologic Profiles of Peripheral Blood Leukocytes and Serum Immunoglobulin G Concentrations in Perinatal Mares and Neonatal Foals (Heavy Draft Horse)

Cited by 13 publications

References 32 publications

Hematological and biochemical profiles of Mangalarga Marchador mares in the transition period bred on pasture

Hematological and biochemical profiles of Mangalarga Marchador mares in the transition period bred on pasture

Leukocyte modifications during the first month after foaling in mares and their newborn foals

Haematological profile in foals during the first year of life

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