This study presents the diversity of anthelmintic plants in the cotton zone of Central Benin. The aim was to identify the medicinal anthelmintic plants used by small ruminant breeders in cotton zone of Central Benin to treat gastrointestinal parasites. Three hundred and sixty breeders were selected during individual semi-structured face-to-face interviews. Different quantitative indices of cultural importance were calculated in order to determine the level of use of plant species. Jaccard similarity index (JI) was calculated and Pearson’s correlation was determined for Use Value (UV) and Relative Frequency of Citation (RFC). In this study, a total of 99 medicinal species, of which 63 have anthelmintic potential, were listed, including Khaya senegalensis, Launaea taraxacifolia, Napoleonaea vogelii, Momordica charantia and Vernonia amygdalina, which all had UV and RFC above 20%. Each of them had a Fidelity Level above 50% and an Informant Agreement Rate (IAR) value close to one. Pearson’s correlation showed a significant correlation between RFC and UV with r = 0.94, and the studies were clearly independent (IJ < 50%). This study showed that the cotton zone of Central Benin represents 4% of the total flora of Benin, with many anthelmintic plants such as Launaea taraxacifolia and Napoleonaea vogelii that require further investigation.

The ethnobotanical research carried out with 20 traditional healers in south of Benin, particularly in Ketou, Bohicon, Mono and Savalou, allowed to collect 30 medicinal plants belonging to 18 families, used mainly for the treatment of arterial hypertension and other gastric affections. Lippia multiflora is retained on the basis of its high use against arterial hypertension, in order to carry out laboratory analysis such as: phytochemical sifting and the general toxicity on the shrimps larvas. The phytochemical screening showed that the leafy stems of the plant contain Gallic tannins, terpenes and steroids, the leuco-anthocyanes, anthocyanes, mucilages and reducing compounds whatever the harvest region is. The LC50 obtained at the end of the larvary toxicity test showed that the water and the which are respectively 1.14± 0.18 mg/ml and hydro ethanolic extracts 3.56±1.53 mg/ml, no have toxicity on the shrimps larvas in principle on the human cells 9PS, KB, A-549 and HT-29.

Small ruminants farming is a traditional activity mostly practiced by local populations in developing countries since several centuries. Nowadays, due to many biotic and climatic factors, it faces various problems which damage smallholders' income especially those related to gastrointestinal parasites. In opposite to the chemical drugs use in controlling those parasites, medicinal plants have been investigated with fewer side effects on both the meat quality and the environment. This current study aimed at reviewing Haemonchus contortus prevalence in small ruminants across the world and present medicinal plants that have been investigated in the last decades. H. contortus is identified as the most significant nematode parasite in small ruminants due to its high prevalence reported by many studies. Its presence in small ruminants results in a loss of feed absorption and disturbance of nutrient metabolism, which lead to poor performance and significant economic loss in the herds, especially in rural areas of developing countries. For the past decades, its control was mainly based on the use of chemical anthelmintics; whose use has been limited due to several factors like the irrational and misuse. Recently, the use of medicinal plants has been identified as alternatives methods of its control with conclusive results. Parts of plants or the whole plants of several plant species were reported to be relevant to control H. contortus infection in small ruminants such as:

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IntroductionThe aims of this study were to determine the immune response and the anticoccidial activity induced by Moringa oleifera and Vernonia amygdalina leaves in rabbits infected with Eimeria magna and Eimeria media.MethodsThirty-five-day-old rabbits, free from coccidia, were infested with 2.103 oocysts of Eimeria magna and Eimeria media, then received the acetone extract of the leaves of Moringa oleifera and Vernonia amygdalina at different doses by oral gavage.Results and discussionThe inhibition of the excretion of oocysts was evaluated by the McMaster technique and the levels of cytokines (IL-4 and IL-12) and immunoglobulin IgG were assayed by the ELISA method. The in vivo efficacy on E. magna and E. media oocysts was 95.43% and 96.53% for Moringa oleifera and Vernonia amygdalina at 1000 mg/kg bw against 98% for the positive control. Interestingly the plant extracts increased the production of interleukin (IL) and immunoglobulins (Ig) compared to controls. Plasma IL-4 levels (pg/ml) in rabbits were 128.94 and 131.38; those of IL-12 (pg/ml) were 395.55 and 426.56, and then for those of IgG (μg/ml) were 14.70 and 13.94 respectively with the acetone extracts of Moringa oleifera and Vernonia amygdalina on D14 PT at 1000 mg/kg bw. This study indicates that Moringa oleifera and Vernonia amygdalina can be used as an alternative to synthetic anticoccidials. These plants could be used to increase the resistance of the immune system of rabbits to infestations of Eimeria species in rabbit farms.