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Articles by L. Sawadogo
Total Records ( 3 ) for L. Sawadogo
  O.C. Hien , B. Diarra , R. Dabire , J. Wangrawa and L. Sawadogo
  This study was designed to identify the external parasites and to evaluate their effects on mortality, growth and reproduction of poultry in the traditional rearing system in the sub-humid zone of Burkina Faso. Identification of external parasites was done on 500 of each species of chicken, guinea fowls and turkeys. For the evaluation of the effects of external parasites on the productivity of poultry, 324 chicks that were 6 weeks of age were randomly divided into 12 groups of 27 chicks each. Four of the groups was assigned at random to receive a treatment against external parasites (ET), 4 other groups were similarly assigned to receive a treatment against external parasites and another treatment against internal parasites (EIT). The 4 remaining groups were not treated against parasites (NT). Two mice species Liperus gallinae and Monopon gallinae have been found on both chicken and turkeys while Goniodes gigas was the only mice species parasiting chicken. The lice Echidnophaga gallinacea and the tick Argas persicus have been found to parasite chicken. Results of productivity trial showed that mortality due to effects of external parasites amounted to 13.9% of non treated poultry. Live weight of male birds increased from the base line of 850 g of the non-treated birds by 9.8% (950±164.3 g) due to treatment against external parasites and by 44.5% (1250±133.1g) due to treatments against both external and internal parasites. Live weight of female birds increased similarly from 952.5±238.7 g by only 3.8% (980.5±36.2 g) due to treatment against external parasites and then by 13.5% (1081.6±160.2 g) due to treatment against both external and internal parasites. Likewise, age at first egg decreased from 28 weeks to 25 weeks with treatment against external parasites and further to 24 weeks with both treatments. Egg weight also increased from 47 to 48.0g due to treatment against external parasites and further to 48.5g due to both treatments. External parasites increase mortality rate and reduce growth rate of chicken.
  B. Bayala , P.B. Telefo , I.H.N. Bassole , H.H. Tamboura , R.G. Belemtougri , L. Sawadogo , B. Malpaux and J.L. Dacheux
  Testis histology and sperm parameters were used to evaluate the antispermatogenic effect of Leptadenia hastata aqueous extract in male Wistar rats. 100, 200, 400 and 800 mg kg-1 of Leptadenia hastata aqueous extracts were orally administered during 60 consecutive days. L. hastata aqueous extract did not have significant (p>0.05) effect on body, testis and epididymis weights. Testes histology of rats treated with the plant extract showed the decrease of Leydig cells number and the spermatogenesis was been influenced with high doses of L. hastata aqueous extracts. Some sperm parameters as path velocity, progressive velocity, straightness, linearity and motility of spermatozoa were been significantly (p<0.05) decreased. The treated rats with the different amount of L. hastata aqueous extracts showed a significant (p<0.01) reduction in the number of sperm in the testis and the cauda epididymis. Even if its not significant, the extract showed a decrease of testes, epididymis weights and a rarity of Leydig cells. These results confirm the antiandrogenic effect of L. hastata and the claims of breeders that the consumption of the leaves of L. Hastata reduced the fertility of their animals.
  M. Boungou , G.B. Kabre , A. Marques and L. Sawadogo
  The study of the gill fishes of 176 Oreochromis niloticus (L.) was undertaken in the dam of Loumbila (Burkina Faso), in order to obtain the first information on the dynamics of population of the Monogeneans parasites in a population of wild hosts. These data are essential in the search for means to avoid the enormous losses that often occur in intensive pisciculture. This analysis revealed the presence of five species of Monogeneans (Cichlidogyrus tilapiae, Cichlidogyrus halli, Cichlidogyrus thurstonae, Cichlidogyrus rognoni and Scutogyrus longicornis). On the levels of the recorded infestations, these species taken individually probably do not control the population of Oreochromis niloticus. In the dam of Loumbila, the fluctuations of parasitic abundances are neither seasonal nor cyclic. The size either does not have an influence on parasitism. However, the sex effect was noted with C. halli, the females thus were more infested than the males. O. niloticus is parasitized all the year, because the recruitment of these organisms, although relatively weak, is continuous; this logically results in their accumulation in this fish.
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