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Articles by S. Adamu
Total Records ( 5 ) for S. Adamu
  J.S. Neils , K.A.N.Esievo , S. Adamu , A.K.B. Sackey and U.S. Abdullahi
  The study involved the evaluation of the effect of T. congolense infection on pyruvate concentration in the serum of Yankassa sheep. Three groups of six sheep each were used; groups A and B were experimentally infected with T. congolense. Animals in group A were treated with Diminazene aceturate after first peak of parasitaemia but group B animals were left untreated. Sera of infected and uninfected control sheep were analyzed using DNS method to determine pyruvate and its concentrations. Group B animals which were not treated had mean values which were lower compared to that of group A (post treatment) and the control. Mean values of 72.4-25.7 g L-1, 79.6-5.2 g L-1 for groups A and B respectively were significantly different (p<0.0001) and indicative that the presence of parasites might have enhanced depletion of the pyruvate in the plasma. However, the cause of pyruvate depletion which occurred when the trypanosome parasites were in general circulation needs further investigations.
  B.M. Ulayi , B. Umaru-sule and S. Adamu
  In a study to determine the prevalence of liver fluke infections in cattle, a total of 350 gall bladders, altogether, were harvested from 191 bulls and 159 cows slaughtered at Zaria abattoir within a period of two months. The contents of the gall bladders were analyzed using sedimentation technique for presence of the eggs of Fasciola and Dicrocoelium species and, possibly, the adult parasites. Two species of these worms were encountered, namely, Fasciola gigantica and Dicrocoelium hospes. Generally, the prevalence of the infection with liver flukes was 37.1%. Prevalence of the infection in female animals was 52.8%, while that in the males was 24.1%. Dicrocoelium hospes was found to occur with a higher prevalence (35.4%) when compared with that (1.7%) of Fasciola gigantica. Dicrocoelium hospes was also found to occur more in female animals (prevalence, 51.6%) than in the male counterparts (prevalence, 22%). On the other hand, prevalence (2.1%) of the infection with Fasciola gigantica was higher in the bulls than that (1.3%) in the cows. Only 3 cattle were found to have mixed infection of the 2 parasites (prevalence, 0.86%). It was concluded from this study that the prevalence of infection with liver flukes remains high in Zaria and could be one of the sources of economic losses being incurred in the livestock industry in this part of Nigeria.
  S. Adamu , M.Y. Fatihu , N.M. Useh , N.D.G. Ibrahim , M. Mamman , V.O. Sekoni and K.A.N. Esievo
  In order to investigate whether testicular pathologic changes reported in trypanosome-infected animals are related to declining testosterone concentrations or not, four White Fulani bulls (infected group) with similar ages and weights were infected with Trypanosoma vivax (T. vivax), Kudaru stock, by inoculating each, intravenously, with 2 mL of blood from an infected donor calf containing 2106 T. vivax organisms. Three other White Fulani bulls, with ages and weights similar to those of the infected group, which were uninfected, served as control group. Blood samples were collected from animals in the two groups before and after the infection to determine Packed Cell Volume (PCV) and serum testosterone profile. To carry out histopathological studies on the testes and other organs in the body of these animals, one bull from the infected group was sacrificed on day 14 Post-Infection (PI), while two bulls (one each from the infected and control groups) were sacrificed, each, on days 28, 56 and 84 PI. All animals in the infected group were parasitaemic by day 6 PI. This was followed by a gradual and progressive decrease in the values of Packed Cell Volume (PCV) and serum testosterone concentrations in these animals. PI values of these parameters in the control group remained normal relative to the pre-infection ones. The mean PI testosterone concentrations, measured in ng mL 1, in individual bulls of the infected group sacrificed on days 14, 28, 56 and 84 were 9.6±4.2, 7.8±3.7, 4.9±4.1 and 5.0±3.4, respectively. Histopathologically, severe testicular degeneration was observed in all animals in the infected group characterized by necrosis and depletion of the spermatogenic and sertoli cells in the seminiferous tubules. Leydig cells in the interstitial tissues of the testes were also severely degenerated. Severity of the lesions was related to serum testosterone concentrations as testicular degeneration was progressive from the bull that was sacrificed on day 14 PI moving through to the bull that was sacrificed on day 56 PI which had the least mean PI testosterone concentration and in which both spermatogenic and sertoli cells had undergone karyolysis and so were completely depleted. In contrast, testes of bulls in the control group were normal as both seminiferous tubules and interstitial tissues of the testes contained full complement of the spermatogenic and Leydig cells, respectively. It is concluded from this study that lowering testosterone concentration may be an aggravating factor to the degenerative changes observed in the testes of trypanosome-infected male animals.
  S. Adamu , I.T. Adebayo , N.M. Useh , M. Bisalla , S.J. Sambo and K.A.N. Esievo
  In a study to determine the occurrence evidences of impairment of kidney function in cattle, urine specimens were collected from 135 emaciated cattle, made up of 70 bulls and 65 cows and analyzed chemically for urinary constituents using reagents strip. Results obtained indicated that abnormal values of pH, glucose, bilirubin, specific gravity, erythrocyte, protein, Urobilinogen, nitrite, leukocyte and ketones occurred at prevalence rates of 10.4, 3.7, 15.6, 27.4, 11.1, 30.4, 1.5, 14.1, 13.3 and 20%, respectively. Abnormal values of these parameters were found to occur more in the males than in females except for values of glucose, specific gravity and ketones in which the reverse was the case. It was recommended from this study, that since the abnormal values of most of the constituents evaluated in the urine of these animals were suggestive of the existence of disorders that could impair with renal function, an in-depth study to identify the specific disorders and their aetiologic factors be conducted so that effective control and preventive measures could be designed and effected to curtail the menace of the diseases in cattle livestock.
  S.J. Sambo , N.D.G. Ibrahim , H.M. Kazeem , S. Adamu , P.H. Mammam and M.N. Ali
  Thirty-five adults clinically healthy African giant rats captured around Zaria were purchased for examination between April to August, 2006. Each rat was euthanized with chloroform and postmortem examination was conducted on them. Subsequently, a liver specimen was obtained from each rat and fixed in 10% buffered neutral formalin. They were later processed, sectioned at 5 m thickness, stained with Haematoxylin and Eosin (H and E) technique and the slides were examined using the light microscope (Olympus®). Photomicrographs were taken with the Deluxe® photomicroscope (x40 0bjective). Twenty-five (71.4%) of the rats had normal livers grossly, while 10 (28.6%) exhibited gross changes. There were whitish and grayish patchy areas of necrosis in 5 (14.3%), fatty change in 2 (5.7%) and slight congestion in 3 (8.6%) livers from the rats. Light microscopy revealed ova of Capillaria hepatica within the parenchyma of the livers from 2 (5.7%) of the rats which had hepatic necrosis grossly. The ova were predominantly immature, while few matured ones had the typical bipolar nature of ova of Capillaria sp. The preponderance of these ova distorted the parenchyma and compressed the hepatic cells in the affected areas. Mild fatty degeneration was observed in close association to the ova and elsewhere within unaffected portions of the hepatic parenchyma. The consumption of African giant rats may lead to human cases of capillariosis if not properly cooked or roasted.
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