Comparative Evaluation of the Effects of  Velogenic Newcastle Disease Virus Infection on the Hematology of Ducks and Chickens

Eze, Chekwube Paul; Okoye, J. O. A.; Ogbonna, Innocent Okonkwo; Ezema, Wilfred Sunday; Eze, Didacus Chukwuemeka; Okwor, E. C.; Okorie-Kanu, Christian O.; Idika, Idika Kalu

doi:10.4236/ojvm.2014.46013

Cited by 6 publications

(6 citation statements)

References 14 publications

(17 reference statements)

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“…Besides, in our study, the values of RBC in the mallard ducks within all monitored groups were slightly higher than those found by He et al (2013) in 35-day-old Cherry Valley hybrid ducks. On the other hand, the values of RBC that we found are somewhat lower than the values found by Eze et al (2014) in 21-day-old domestic mallard ducks. Concerning the values of the HCT, the values that we found corresponded to the values found by He et al (2013).…”

Section: Discussioncontrasting

confidence: 98%

“…Such a comparison can affect negatively Boever et al 2010;Seliger et al 2012;Bílková et al 2017). Besides, our results of the differential leukocyte counts in Cherry Valley hybrid ducks showed that LYM are the most abundant type of leukocytes, which is in accordance with the previous findings of Li et al (2012) and Eze et al (2014). The LYM and GRA values found in our study are generally in accordance with those stated by Campbell et al (2010) for mallard ducks, while their percentage shares did not differ from the respective groups of ducks in our study (P > 0.05).…”

Section: Discussionsupporting

confidence: 81%

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Haematological indicators in hybrid mallard ducks (Anas platyrhynchos) with regard to the use of meal from whole white lupin seeds in their diet

et al. 2017

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The objective of our study was to assess the effect of replacing soybean meal with the meal from whole white lupin seeds (Lupinus albus) of the Zulika variety in diets on selected haematological indicators in 40-day-old fattened hybrid mallard ducks. A total of 180 Cherry Valley ducks were divided into three groups (E1, E2, and control). The control group was fed a diet containing soybean meal. Soybean meal replaced with 50% and 100% meal of white lupin seeds were used in group E1 and group E2, respectively. At the end of the fattening, 12 ducks (6 males and 6 females) were randomly selected from each group for a haematological examination. From the result of this study, it is clear that the effect of the diet was found only on the slightly varying number of white blood cells and on the proportion of monocytes. Ducks of group E2 showed a slight increase in the total number of leukocytes which was accompanied by a decrease in the percentage share of monocytes (P < 0.05). Based on the results, it can be claimed that the replacement of soybean meal with meal from the Zulika variety of whole white lupin seeds in the diet did not have a negative effect on the determined blood indicators. Therefore, whole white lupin seeds were successfully used as the important protein component of the diet for fattening hybrid mallard ducks.

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Section: Discussioncontrasting

confidence: 98%

Section: Discussionsupporting

confidence: 81%

Haematological indicators in hybrid mallard ducks (Anas platyrhynchos) with regard to the use of meal from whole white lupin seeds in their diet

et al. 2017

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“…Vaccination in pullets protected against ND and lesions of velogenic NDV in laying birds (Igwe and Eze, 2016). Only the values obtained in turkeys agreed with the reports of Eze et al (2014) who observed significant reductions in erythrocytic values from day 3 to 15 pi in unvaccinated and infected chickens and ducks. It is possible that a less virulent strain of the virus was used by Eze et al (2014) as several birds survived at the end of the experiment unlike what was observed in the present study.…”

Section: Discussionsupporting

confidence: 88%

Comparative Haematology of Chickens and Turkeys Experimentally Infected with a Velogenic Newcastle Disease Virus

Okoroafor¹,

Okorie-Kanu²,

Animoke³

et al. 2019

Nig. Vet. J.

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This study compared the haematological findings in cockerels and turkeys infected with a velogenic Newcastle disease virus. One hundred and twenty day-old birds each of cockerels and turkeys, making a total of two hundred and forty were used for the study. The bird types were randomly divided into four groups each making a total of eight groups. Two groups in each species were vaccinated against NDV with La Sota vaccine at three weeks of age via drinking water. The vaccinated and unvaccinated cockerels and turkeys were inoculated with the velogenic NDV at six weeks of age while the control groups were not vaccinated and not inoculated. Blood samples were randomly collected from five birds in each group for haematological analyses at days 0, 3, 6, 10, 15 and 21 post inoculation (pi). The results showed significant (p < 0.05) reductions in packed cell volume, haemoglobin concentration and total red blood cell count in unvaccinated infected turkeys, but showed significant (p < 0.05) increase in total white blood cell (WBC) and heterophil counts throughout the days of the experiment. The increase in the total white blood cell counts was observed three days pi in the cockerels. There was reduction of lymphocytes in unvaccinated but infected cockerels and turkeys three days pi. The erythrocyte and leukocyte values in unvaccinated but infected cockerels and turkeys were similar. The values were lower than those recorded in vaccinated and infected birds. Thus, vaccination against the disease can ameliorate the adverse effect of the virus on haematological parameters. Vaccination of the birds against velogenic Newcastle disease virus reduced morbidity and mortality.

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“…The findings of significantly lower RBC on day 6 PI and all the erythrocytic parameters (PCV, RBC and HbC) on day 15 PI in unvaccinated infected laying chickens are similar to the findings of Hostetter & Andreasen (2004). Although, different pattern of reduced erythrocytic parameters beginning from day 3 PI was reported by Abbas et al (1992) and Eze et al (2014) in 6-week old pullets and cockerels respectively, experimentally infected with vNDV, the pattern observed in the present study was in line with the report of Hostetter & Andreasen (2004).…”

Section: Discussionsupporting

confidence: 82%

“…The mean corpuscular values are useful in the characterization of the erythrocytes, especially in the evaluation of anaemia (Campbell, 1994). The significant higher MCV value recorded in the present study in UI laying chickens is in agreement with the findings of Eze et al (2014), while the higher MCH are contrary to their report. The finding of no significant changes in MCHC is in agreement with the report of Igwe et al (2013).…”

Section: Discussioncontrasting

confidence: 55%

Haematological changes in Isa-brown laying chickens (<i>Gallus gallus domesticus</i>) experimentally infected with velogenic Newcastle disease virus

Igwe¹,

Eze²,

Nwakudu³

2017

Sokoto J. Vet. Sc.

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This study investigated the haematological changes in vaccinated and unvaccinated laying chickens experimentally infected with a velogenic Newcastle disease virus. Two hundred and forty laying chickens were randomly assigned into four groups of 60 each: vaccinated with Newcastle disease vaccines and infected with velogenic Newcastle disease virus (VI), vaccinated uninfected (VU), unvaccinated infected (UI), unvaccinated uninfected (UU). At peak production, 32-weeks-old, groups VI & UI were each inoculated intramuscularly with 0.2 ml of velogenic Newcastle disease virus. The changes in the blood cells were assayed in the groups on the specified days. The total red blood cell count (RBC) was significantly (P < 0.05) lower in UI group on days 6 & 15 post infection (PI). The packed cell volume (PCV) and haemoglobin concentration (HbC) were significantly (P<0.05) lower in UI group on day 15 PI. There were no significant (P > 0.05) differences between the PCV, RBC and HbC in VI & VU groups from day 0 to 21 PI. The leukogram showed significant (P < 0.05) differences in leukocytosis on days 3 & 6 PI followed by significant (P < 0.05) leukopenia on days 10, 15 & 21 PI in UI group. However, significant leukocytosis on day 10 PI followed by leukopenia on day 15 PI were recorded in VI group. These findings suggest that leukocytosis in UI & VI and decreased haemogram in UI are features of Newcastle disease in laying chickens.

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Comparative Evaluation of the Effects of Velogenic Newcastle Disease Virus Infection on the Hematology of Ducks and Chickens

Cited by 6 publications

References 14 publications

Haematological indicators in hybrid mallard ducks (Anas platyrhynchos) with regard to the use of meal from whole white lupin seeds in their diet

Haematological indicators in hybrid mallard ducks (Anas platyrhynchos) with regard to the use of meal from whole white lupin seeds in their diet

Comparative Haematology of Chickens and Turkeys Experimentally Infected with a Velogenic Newcastle Disease Virus

Haematological changes in Isa-brown laying chickens (<i>Gallus gallus domesticus</i>) experimentally infected with velogenic Newcastle disease virus

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