Morphological characterization and breeding system identification of local sheep breeds in Niger

Abstract

different herds is shown in Figure 1 with the confidence interval of the mean. The FEC of the non resistant herd grazing with heifers (M0) is significantly higher than the FEC of the 2 resistant herds (M1 and R1).The effect of selection improves the ability of the does to control parasite infection. The effect of the grazing mode was not significant enough to explain the difference between the herds for the FEC. Conclusion and perspectives These first results suggest a better resistance to GIN of the resistant-selected herds (M1 and R1) compared to the non resistant herd grazing with heifers (M0). However, doe infection is one aspect of the comparison. The performance of the herds will also be studied using other parameters like PCV and EOSI to assess the parasite infection characteristics. The kid average daily gain (ADG) will allow estimating the milk output of the does (ADG 10 to 30 day) and the kid growth potential (ADG 30 to 70 day). The estimates of the litter weight at weaning and of the doe and cattle weight variations will allow comparing the productivity of the four herds.

A long term experiment of integrated control of nematode parasitism in Creole goats

“…Mixed grazing between sheep and cattle reduces infection of the small ruminants and improves growth performances (Mahieu et al, 1997). Also, it is possible to select Creole goats on resistance to GIN during the post weaning growth and the periparturient period (Mandonnet et al, 2006). This study presents the potential benefits of combining these two control methods.…”