Time-dependant peri-partum haematological, biochemical and rectal temperature changes in West African dwarf ewes

Obidike, Ikechukwu Reginald; Aka, Lawrence Okonkwo; Okafor, Charles O.

doi:10.1016/j.smallrumres.2009.01.012

Cited by 18 publications

(18 citation statements)

References 11 publications

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“…However, reports suggesting no effect of reproductive status and sex on TLC also exist (Daramola et al 2005;Iriadam 2007). The comparable lymphocyte and neutrophil counts among the does in the current study are in agreement with values described in previous studies (Azab and Abdel-Maksoud 1999;Iriadam 2007), but run counter to the findings of Obidike et al (2009) who reported a higher lymphocyte count postpartum. In general, the variations observed between haematological parameters in this study and those reported by other authors, could be due to differences in breed, age, parity, species, sex, blood collection procedure, animal housing and subclinical illness.…”

Section: Haematologysupporting

confidence: 84%

“…We observed a higher PCV in lactating compared to pregnant does. Lower prepartum, but higher postpartum PCV has been reported in goats (Azab and Abdel-Maksoud 1999) and ewes (Obidike et al 2009;Mohammed et al 2014). In goats, blood volume expands in parallel with increases in body weight during pregnancy (Olsson et al 2001).…”

Section: Haematologymentioning

confidence: 92%

“…In contrast, Haldar (2012) reported that female Jamunapari goats exhibited higher immune parameters such as TLC than male goats. Other studies reported lower TLC in pregnant compared to lactating animals (Khan et al 2002;Obidike et al 2009), while some reported higher values in pregnant animals compared to non-lactating females (Waziri et al 2010). However, reports suggesting no effect of reproductive status and sex on TLC also exist (Daramola et al 2005;Iriadam 2007).…”

Section: Haematologymentioning

confidence: 96%

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Influence of sex, reproductive status and foetal number on erythrocyte osmotic fragility, haematological and physiologic parameters in goats during the hot-dry season

Habibu¹,

Kawu²,

Makun³

et al. 2014

Vet. Med. - Czech

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ABSTRACT:The current study was aimed at evaluating the effect of heat stress (during the hot-dry period) on some physiological variables, haematology and erythrocyte osmotic fragility (EOF) in bucks, pregnant (single and twin) and lactating Red Sokoto (RS) goats. Forty apparently healthy adult goats were used for the study and were allotted to four groups [bucks (n = 10), pregnant (n = 10) dry (n = 10), and lactating (n = 10) does]. The pregnant goats were further re-grouped according to number of foetuses (single foetus, n = 5 and twins, n = 5). The temperature-humidity index and physiological variables measured were significantly higher in the afternoon compared to morning hours. Pregnant does had higher respiratory and pulse rates than the dry does, but no significant change (P > 0.05) in rectal temperature was observed between groups. On the basis of sex, bucks had lower (P < 0.05) mean corpuscular volume (MCV) than other groups, in addition to having higher (P < 0.01) mean corpuscular haemoglobin (MCH) and total leucocyte counts than dry does. Pregnant does exhibited significantly lower (P < 0.05) packed cell volume, but significantly higher (P < 0.05) MCH and mean corpuscular haemoglobin concentrations (MCHC) than lactating does. Does with a single foetus had significantly lower (P < 0.05) MCV, but higher MCHC than does with twin pregnancies. Using EOF as a biomarker of oxidative stress, erythrocytes of bucks were significantly more resistant to hypotonic haemolysis than those of dry, pregnant and lactating does, with no significant difference in EOF between does of different groups. The erythrocytes of single and twin pregnancies showed similar haemolysis pattern. In conclusion, sex, lactation, and the number of foetuses carried by pregnant does significantly influences physiological and haematological variables in RS goats during the hot-dry season. Also, during heat stress, the changes in physiological variables seem to enhance favourable adaptation by preventing an increase in rectal temperature even in twin pregnancies.

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Section: Haematologysupporting

confidence: 84%

Section: Haematologymentioning

confidence: 92%

Section: Haematologymentioning

confidence: 96%

See 1 more Smart Citation

Influence of sex, reproductive status and foetal number on erythrocyte osmotic fragility, haematological and physiologic parameters in goats during the hot-dry season

Habibu¹,

Kawu²,

Makun³

et al. 2014

Vet. Med. - Czech

View full text Add to dashboard Cite

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“…Besides, there is an ongoing discussion concerning time-dependent reference limits in veterinary (Geffré et al, 2009), as well as in human medicine (Henny, 2009). For example, during late pregnancy and early lactation in cows (Doornenbal et al, 1988;Dubreuil and Lapierre, 1997;Ingvartsen et al, 2003;QuirozRocha et al, 2009;LeBlanc, 2010) and sheep (Obidike et al, 2009), where is the diagnostic cut-point between physiological regulation and pathological disorder? This is important, for example, for b-hydroxybutyrate, fatty acids and calcium, because determined reference limits for the weeks before and after calving are markedly different from those for peak-or midlactation (Quiroz-Rocha et al, 2009).…”

Section: Animal-related Changesmentioning

confidence: 99%

Pre-analytical factors affecting the results of laboratory blood analyses in farm animal veterinary diagnostics

Humann-Ziehank

Ganter

2012

Animal

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The quality of the laboratory diagnostic approach in farm animals can be severely affected by pre-analytical factors of variation. They induce increase/decrease of biochemical and hematological analyte concentrations and, as a consequence, they may cause unsuitable conclusions and decisions for animal health management and research projects. The pre-analytical period covers the preparation of sampling, the sampling procedure itself, as well as all specimen handling until the beginning of the specific laboratory analysis. Pre-analytical factors may have either an animal-related or a technique-related background. Animal-related factors cover daytime/season, meals/fasting, age, gender, altitude, drugs/anesthesia, physical exercise/stress or coinfection. Technique-related factors are the choice of the tube including serum v. plasma, effects of anticoagulants/gel separators, the anticoagulant/blood ratio, the blood collection procedure itself, specimen handling, contamination, labeling, storage and serum/plasma separation, transportation of the specimen, as well as sample preparation before analysis in the laboratory. It is essential to have proper knowledge about the importance and source of pre-analytical factors to alter the entire diagnostic process. Utmost efforts should be made to minimize controllable factors. Analytical results have to be evaluated with care considering that pre-analytical factors of variation are possible causes of misinterpretation.

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“…However, Hb values and PCV values, sequentially monitored in goats and sheep during pregnancy and onwards, generally reflect a rise in these values in late gestation followed by a decline in the periparturient period and a further decline in early lactation [15–17]. Contrastingly, in West African Dwarf sheep, Obidike et al [18] did not find significant change in these values in the periparturient period except a rise at two weeks after parturition. The decline in Hb and PCV values in late gestation is attributed to an increase in plasma volume [3].…”

Section: Introductionmentioning

confidence: 99%

Serum Copper and Haematological Values of Sheep of Different Physiological Stages in the Dry and Wet Seasons of Central Trinidad

Mohammed

Campbell

Youssef

2014

Veterinary Medicine International

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A study was conducted to determine serum copper (Cu) concentrations and hematological values of 174 sheep from four medium sized farms, pertaining to physiological stage, in the late dry and late wet seasons of Central Trinidad. Serum Cu was significantly lower in the dry than in the wet season (P < 0.001) with a corresponding high percentage of samples with low Cu levels in the former. 31% of dry nonpregnant sheep exhibited a nonregenerative anaemia. Also, hemoglobin and packed cell volume values varied (P < 0.001) including lymphocyte (P < 0.01) counts, among growing animals compared with other physiological stages. Significant variations also occurred among neutrophil (P < 0.05) and eosinophil (P < 0.05) values in sheep. Highest haemoglobin and packed cell volume, white blood cell counts, and lymphocyte values in growing sheep compared with other stages were probably age related.

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Time-dependant peri-partum haematological, biochemical and rectal temperature changes in West African dwarf ewes

Cited by 18 publications

References 11 publications

Influence of sex, reproductive status and foetal number on erythrocyte osmotic fragility, haematological and physiologic parameters in goats during the hot-dry season

Influence of sex, reproductive status and foetal number on erythrocyte osmotic fragility, haematological and physiologic parameters in goats during the hot-dry season

Pre-analytical factors affecting the results of laboratory blood analyses in farm animal veterinary diagnostics

Serum Copper and Haematological Values of Sheep of Different Physiological Stages in the Dry and Wet Seasons of Central Trinidad

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