Improvement of indigenous Djallonke sheep among smallholder farmers in Cote d'Ivoire using an open nucleus breeding scheme
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Permanent link to this item: http://hdl.handle.net/10568/50705
A sheep selection programme (PNSO - Programme National de Selection Ovine) was initiated in 1983, in Cote d'Ivoire, with the ojbective of genetically improving growth and adult live weight of the indigenous Djallonke sheep through the selection of rams on body weight basis and distributing the superior rams to farmers for breeding. participating farmers were principally smallholders,commercial flocks and two state farms. Selection was based on individual weights of male at 80, 180, and 365 days of age. Data collected from 1983 through 1992 on participating farms and fromt he nucleus were analyzed to evaluate the yearly variations of lamb survival at pre-selection and growth performance both on-farm (participating farms) and on-station (nucleus). Trait means (+s.e.) were 2.2+0.02 kg, 69.9+1.26 g/d 9.1+0.05 kg, 19.7+0.24 kg, 31.8+0.45 kg and 89.5+0.94 for birth weight, pre-selection (birth to 80 days) average daily gain, 80 day weight, 1780 day weight, 365 day weight and survival rate, respectively. The genetic analysis indicated an annual increase in body weight gain of 0.28, 0.05 and 0.04 percent for the 80, 180 and 365 day weights, respectively. Results of this study indicate that, through the open nucleus breeding scheme can be used to improvement growth and adult live weight of the Djallonke sheep.