Abstract
The fight against Gastro-Intestinal Nematodes is an urgent necessity for the sheep’s productivity improvement in Burkina Faso. The anthelmintic activity of S. hermonthica’s whole plant powder was evaluated on Mossi sheep artificially infested with H. contortus L3 larvae. The experiment lasted 21 days with 2 phases of 4 days of treatment separated by 6 days in station. Two (2) treated lots of 6 sheep each received respectively 17g/kg of body weight and 10g/kg of body weight while two (2) control lots of 6 sheep each, one negative without treatment and one positive treated with levamisole 1/2 bolus for 25 kg were constituted. The faecal egg count (FEC) reduction rate was high during treatment and reached 84.49% for the 17g/kg body weight dose and 83.69% for the 10g/kg body weight dose at D21. Statistical analysis shows no significant difference between the two doses tested and between the two doses and the positive control, whereas the difference is significant (P<0.05) with the negative control. The mean hematocrit level ranged from 24 at D0 to 30.5 at D21 for the 17g/kg body weight treatment and from 25.83 at D0 to 31 at D21 for the 10g/kg body weight dose. The average daily gain (ADG) of the treated lots was not significant compared to the negative control (P>0.05).
Highlights
Parasitosis due to gastrointestinal strongyles is a worldwide problem that can lead to significant productivity losses in small ruminants (Okombé, 2011; Francesco and al, 2014)
The objective of our study is to evaluate the anthelmintic activity of the whole plant powder of S. hermonthica through the measurement of the feacal eggs count in sheep artificially infested with L3 larvae of H. contortus
CONTORTUS REDUCTION RATE A significant reduction of fecal excretion rate of H. contortus eggs compared with the negative control P (
Summary
Parasitosis due to gastrointestinal strongyles is a worldwide problem that can lead to significant productivity losses in small ruminants (Okombé, 2011; Francesco and al, 2014) These parasites can cause mortality of up to 50% of lambs and economic losses beyond 50% of production capacity (Bodji and al, 2017). Haemonchus contortus is one of the most widespread and pathogenic species causing severe anemia in small ruminants (Burke, 2007). Gastrointestinal parasites’s control has been based for several years on the use of synthetic anthelmintics which are inaccessible and increasingly ineffective against these parasites (Kaboré andal, 2009). These molecules have been found to be ecotoxic, presenting a high environmental risk (Saccareau, 2016).
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