scholarly journals Erythrocyte alterations of the laying hens subjected to thermal stress

The aim of this study was to identify erythrocyte changes resulting from heat stress in relation to different times of blood collection throughout the day. The experiment was carried out with 39 Rhode Island Red hens, in the initial laying phase, receiving standardized ad libitum feeding. The birds were placed in an environment of 20m2, with controlled temperature, divided into 2 distinct groups: Control Group with 12 animals at 16°C and Experimental Group with 27 animals at 30°C. Venipuncture took place at 7:00 am, 11:00 am and 3:00 pm. Blood was stored in an EDTA tube, aiming at cell preservation for further analysis. Total red blood cell count, hematimetry and erythroid morphometry were performed. After evaluating the erythroid and hematimetric parameters of the 39 birds, a negative correlation of heat stress was observed when comparing the different times of blood collection throughout the day. For morphometric correlation, there was a significant difference (P>0.01) at 3:00 pm. When evaluating the results between the times of blood collection from the same animal, it was observed that 55.5% reduced the hematocrit, while the total red blood cell count was reduced by 51.8%. It is essential that there is a systematization of time in the collection of blood from laying hens.

2015 ◽  
Vol 84 (3) ◽  
pp. 277-287
Author(s):  
Miroslav I. Urosevic ◽  
Isabel Hennig-Pauka ◽  
Alexander Tichy ◽  
Nenad Stojanac ◽  
Radomir Ratajac

The aim of our study was to compare the effect of various proportions of popped amaranth grain (Amaranthus cruentus) in piglet diets on selected blood indicators, such as red blood cell count (RBC), haematocrit (HCT), haemoglobin concentration (HB) and mean corpuscular haemoglobin concentration (MCHC), but also growth efficiency (daily weight gain) and tissue morphology of the gastrointestinal tract. Altogether, 122 piglets (12 litters) were divided randomly into four groups (4 × 3 litters). Diet of the piglets in the control group was without popped amaranth grain. Starting from day 5 until day 90 of life, each of the three experimental groups was offered one of the feed mixtures containing different amounts of heat-treated popped amaranth grain: 20% (group A20), 40% (group A40), and 79% (group A79). When comparing the three experimental groups with the control group, in relation to the mean haemoglobin concentration and red blood cell count, higher values were measured in almost all periods of the piglets’ life, except for five-day-old piglets in the experimental groups. Only in 90-day-old piglets, group A79 tended to have a higher body weight compared to the control piglets. In summary, differences in haematologic indices which occurred between groups were inconsistent and of minor practical impact. With regard to the costs of the Amaranthus diet, beneficial effects were not obvious.


2015 ◽  
Vol 2015 ◽  
pp. 1-4
Author(s):  
Hüseyin Simavlı ◽  
Yasin Yücel Bucak ◽  
Mehmet Tosun ◽  
Mesut Erdurmuş

Purpose. The pathogenesis of pseudoexfoliation (PEX), the most common cause of secondary glaucoma, has not been clearly identified, but there is increasing evidence that points out the role of oxidative stress. The aim of this study is to evaluate some of the most commonly used blood parameters, hemoglobin (Hb), red blood cell count (RBC), alanine aminotransferase (ALT), and uric acid (UA) levels, in subjects with PEX.Materials and Methods. This study is performed in a state hospital between November 2011 and December 2012. Retrospective chart review of subjects who underwent cataract surgery was performed. Thirty-one healthy subjects with PEX and 34 healthy subjects without PEX were evaluated. Hb, RBC, ALT, and UA levels were recorded. Student’st-test was used to compare the two groups.Results. The mean age was73.6±14.1years in PEX group and70.1±12.7in control groupp=0.293. Hb, RBC, ALT, and UA levels did not show a statistically significant difference among PEX and control groups (p>0.05for all).Conclusion. Serum levels of Hb, RBC, ALT, and UA levels were similar in subjects with and without PEX. Further studies are needed to clarify the precise role of Hb, RBC, ALT, and UA in the pathogenesis of PEX.


Medicina ◽  
2019 ◽  
Vol 55 (4) ◽  
pp. 96 ◽  
Author(s):  
Dominika Głąbska ◽  
Dominika Guzek ◽  
Barbara Kanarek ◽  
Gustaw Lech

Background and objectives: The anemia is the most common extra-intestinal manifestation of the ulcerative colitis. Taking into account, that meat products are perceived as factor, that may promote relapses, the crucial is to indicate the dietary recommendations to prevent anemia development but without high animal products intake. Aim of the study was to analyze the influence of animal products intake on the red blood cell count results in remission ulcerative colitis individuals and pair-matched control group, during 6 weeks of observation. Materials and Methods: The intake of nutrients associated with anemia development (iron, vitamin B12, protein, animal protein, calcium) and the products being their sources (meat, meat products, dairy beverages, cottage cheese, rennet cheese) were analyzed. Results: In spite of the higher meat products intake in the group of ulcerative colitis individuals, the iron intake did not differ between groups. The positive correlations between intakes of meat, meat products, total protein, animal protein, iron, vitamin B12 and red blood cell count results were stated for ulcerative colitis individuals, while in control group were not observed, that may have resulted from higher susceptibility for the diet-influenced changes. Conclusions: The positive correlation between red blood cell count results and energy value of diet, and daily iron intake observed in ulcerative colitis individuals, accompanied by negative correlation for iron intake per 1000 kcal of diet, may indicate, that higher iron intake may be beneficial, but only while accompanied by high energy value of diet.


2019 ◽  
Vol 9 (1) ◽  
Author(s):  
Alejandro Gil-Betacur ◽  
Carmen Yulieth Mantilla-Gutiérrez ◽  
Jaiberth Antonio Cardona-Arias

AbstractThe effects of platelet donation by apheresis on different parameters of the erythrogram are still unclear. The objective was to meta-analyze the effect of plateletpheresis on hematocrit, hemoglobin, and erythrocyte count, with a systematic review with random effects meta-analysis of the mean difference. The PRISMA guidelines were considered, as well as 133 search strategies on four different databases. Reproducibility was guaranteed and methodological quality was evaluated. Heterogeneity was evaluated with Galbraith and DerSimonian-Laird’s, publication bias with a funnel plot and a Begg’s test, sensitivity analysis and a cumulative meta-analysis were also conducted. Eighteen (18) articles were included, 17 evaluated the effects on hematocrit in 2,564 donors; 13 on hemoglobin in 1,640 donors; and 4 on red blood cell count in 243 donors. A decrease of 2.26% (CI95% = 2.11–2.41) was observed in hematocrit, of 0.80 g/dL (CI95% = 0.75–0.86) in hemoglobin and −0.21 × 1012/L (CI95% = −0.13; −0.29) in red blood cell count. Plateletpheresis has a negative effect on the erythrogram parameters, explained by blood loss in the kits used for the procedure and cell lysis. Such evidence is relevant to secure the efficiency and safety of the procedure, improve selection processes or determine the number of donations that can be performed without affecting donors’ health.


2002 ◽  
Vol 57 (3) ◽  
pp. 177-185 ◽  
Author(s):  
Paolo Emilio PUDDU ◽  
Mariapoala LANTI ◽  
Alessandro MENOTTI ◽  
Mario MANCINI ◽  
Alberto ZANCHETTI ◽  
...  

2019 ◽  
Vol 33 (5) ◽  
pp. 6001-6010 ◽  
Author(s):  
Andreas Lodberg ◽  
Bram C. J. Eerden ◽  
Bianca Boers‐Sijmons ◽  
Jesper Skovhus Thomsen ◽  
Annemarie Brüel ◽  
...  

1979 ◽  
Vol 27 (6) ◽  
pp. 913 ◽  
Author(s):  
JL Barnett ◽  
RA How ◽  
WF Humphreys

Age, sex and seasonal related changes in body weight and blood parameters were determined for T caninus and T. vulpecula, whose distribution overlapped in part of the study area. In T. caninus age-related changes occurred in body weight, mean plasma glucose and protein concentrations and haematocrit. Seasonal changes occurred in plasma glucose and protein concentrations, haemoglobin concentration and red blood cell count. There were sexual dimorphisms in haematocrit, haemoglobin concentration and red blood cell count in both species; the mean values were greater in males. T. vulpecula also exhibited a sexual dimorphism in body weight (males > females). The only seasonal change in T. vulpecula was in haemoglobin concentration. Comparison of the species as adults showed that T. caninus had higher mean levels of body weight, haematocrit and haemoglobin concentration, while plasma lipid concentration and red blood cell counts were greater in T vulpecula. These species differences may be a reflection of the diets of the two species. In addition the measured parameters showed greater seasonal variation in T. caninus, a K-selected species, than in T. vulpecula, which is more r-selected.


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