The aim of the present study was to evaluate some semeiotical, haematological and biochemical parameters useful to assess viability in newborn trotter foals. Materials and methods - Ninety-nine trotter foals were investigated. Each subject was examined within 5 minutes after birth, APGAR scoring was assessed, and suction reflex was evaluated. Furthermore, the interval time needed to raise the head, acquire sternal recumbency, stand and acquire colostrum were recorded. Ombelical torsion was assessed too. A blood sample was collected from the jugular vein from every newborn foal before first feed and a total CBC count, serum creatinine, serum urea, fibrinogen and glucose concentration were evaluated. At 24h after birth, IgG status was assessed (SNAP (R), IDEXX, USA). Placenta was layed out in the shape of an "F" with the allantoic surface of the allantochorion exposed. Integrity, thickness, discoloured and/or edematous areas were recorded. Amniotic fluid was also collected during delivery before the rupture of amniotic sac with a sterile 50cc syringe; amniotic fluid clearness was also assessed. Minimum and maximum values, median and standard deviation were calculated for semeiotical, haematological and biochemical data. Student t test was calculated to verify possible differences between healthy foals and foals with APGAR < 6. Statistical analysis was considered significative for p < 0.05: Results - APGAR scoring was 7-8 in 89/99; suckling reflex was present in 89/89, 85/89 foals raised the head immediately, 4/89 after 2 minutes; sternal recumbency was achieved within 1 minute in 61/89, between 1 and 2 minutes in 13/89, between 3 and 4 minutes in 3/89, between 5 and 6 minutes in 8/89 and over 6 minutes in 4/89; 24/89 foals standed within 60 minutes, 25/89 between 61 and 90 minutes, 29/89 between 91 and 120 minutes, and 11/89 after 121 minutes. 43/89 foals nursed the mare within 120 minutes, 33/89 between 121 and 180 minutes, 8/89 between 181 and 240 minutes and 5/89 after 241 minutes. IgG concentration was above 800 mg/dl in 87/89 foals and between 400 and 800 mg/dl in 2/89 subjects. APGAR scoring was < 6 in 10/99. Suckling reflex was not present in 3/10 foals; 7/10 foals raise the head immediately, 2110 within 2 minutes, 1/10 after 10 minutes; sternal recumbency was achieved within 1 minute in 4/10 foals, between 3 and 4 minutes in 2/10, between 5 and 6 minutes in 2/10 and over 6 minutes in 2110 subjects; 1/10 foals standed within 60 minutes, 3110 between 61 and 90 minutes, 6/10 subjects over 60 minutes. 3/10 foals nursed the mare within 120 minutes, 2/10 between 121 and 180 minutes, 2110 subjects between 181 and 240 minutes and 3110 over 241 minutes. Minimum and maximum values, median and standard deviation of semeiotical values are reported in Table 1. Minimum and maximum values, median and standard deviation of haematological and biochemical values, heart (HR) and respiratory rate (RR), rectal temperature are reported in Table 2. Concerning foals with APGAR 7-8, mares' placenta was thicked in 5189, edematous/discoloread areas were present in 12189, the weight was 2-8 kg (X +/- DS 5,1 +/- 1,06 kg), amniotic fluid clearness was considered optimal in 23/89, medium in 65189, scarce in 1/89. Concerning foals with APGAR < 6, mares' placenta was not thicked and/or edematous/discoloread, the weight was 2,5-7 kg (X +/- DS 4,8 +/- 1,2 kg), amniotic fluid clearness was considered optimal in 1/10, medium in 7110, scarce in 2/10. Statistical differences were significative for standing time (180vs90'), nursing the mare (200vs130) and HR (43vs60apm). Conclusions - The semeiotical data obtained in our study were similar to other surveys (Harvey et al, 1984; Bauer et al., 1984; Vaala, 1994; Madigan, 1997; Knottembelt et al., 2004), but with wider reference intervals. Haematological and biochemical values showed some differences respect to other studies (Bauer et al., 1984; Vaala, 1994; Madigan, 1997); in particular in our study we observed mild haemoconcentration and hypoglicemia. These differences could be related to the blood sampling collection time: immediately after this birth (as reported by Knottembelt, 2004) in the present study, while in most other was within 24 hours and after nursing (Harvey et al., 1984; Vaala,1994; Madigan,1997).
|Autori:||Sgorbini M; Pasquini G; Marmorini P; Rota A; Corazza M|
|Titolo:||Valutazione alla nascita di alcuni parametri semeiologici, ematologici e biochimici in una popolazione di 99 puledri trottatori/Evaluation at birth of some semeiological, haematological and biochemical parameters in 99 standardbred foals|
|Anno del prodotto:||2007|
|Appare nelle tipologie:||1.1 Articolo in rivista|