Etude comparative des performances zootechniques d’une souche domestiquée de Clarias gariepinus (Burchell, 1822) et d’une souche sauvage de Clarias anguillaris (Linnaeus, 1758)

Abstract

I. COMPAORE et al. / Int. J. Biol. Chem. Sci. 10(5): 2138-2150, 2016 2139 Comparative study of growth performance of a domesticated strain of Clarias gariepinus (Burchell, 1822) and a wild strain of Clarias anguillaris (Linnaeus, 1758) ABSTRACTBoth species (Clarias gariepinus and C. anguillaris) subgenus Clarias (catfish) were identified among the fish fauna of Burkina Faso. Analysis of their structuring reported the prevalence of C. anguillaris. But for now, the latter species has not yet been the subject of domestication. The aim of this study is to assess the zootechnical performance of this species compared with domesticated strain of C. gariepinus. The study was conducted on 3 families of each species. Each family is obtained by crossing a male and a female. The fry, obtained through artificial reproduction, are divided into six (6) 50 liter aquariums, kept in closed circuit at 1 g individual mean weight. Two densities (2 to 4 fish / liter) were used in replicas. The fish are raised for 30 days. The results showed that in C. gariepinus the mean individual weight ranged between 35.37 and 42.18 g and the total length between 173.5 and 187.55 mm; feed conversion rate of 0.70 and 0.82; the survival rate of 47.87 to 66.62%. In C. anguillaris individual mean weight is between 11.68 and 29.13 g and the total length between 128.4 and 159.2 mm; the feed conversion ratio of 0.71 and 1.28 while the survival rate has fluctuated between 53 and 68.87%. These preliminary results show that C. anguillaris could have growth performance similar to those of C. gariepinus and could therefore be used in aquaculture.

Fruit Powder of <i>Tetrapleura tetraptera</i> in Local Feed on Some Zootechnical Performances of Juveniles of <i>Clarias gariepinus</i> in Concrete Tank

“…These values are all higher (35% to 68.4%) than that obtained by [21] after 17 days of rearing in happas as well as that of [22] obtained in a metal tank (78%) based on the comparison of the sound of rice and peanut meal. Furthermore, these rates corroborate with those obtained (89% to 92%) by [23] as well as those of [24] (89 ± 5.0 to 95 ± 5.0) in their studies carried out in unfertilized and fertilized ponds.…”

“…The average daily gains obtained from all treatments vary between 1.51 ± 0.89 g to 0.99 ± 0.67 g. These values are all lower (2.97 g; 3.6 g and 3.3 g) than those obtained by [24] in unfertilized ponds and fertilized with chicken droppings and pig manure. However, the daily gain (0.99 ± 0.67 to 1.51 ± 0.89) corroborates with those obtained (1.29 ± 0.22) by [23]. These variations between authors may be due to the conditions of breeding, the quality of the feed as well as the physico-chemical parameters of the environment.…”

“…The specific growth rates obtained are between 3.64 ± 0.79 and 3.10% ± 0.81%. These rates are all significantly higher than those with the local feed composed of 34.77% and largely much lower than those observed (11.44 ± 4.8) by [23]. However, these results corroborate with those obtained (3.6) by [22] comparing the sound of rice to peanut meal on Clarias.…”

“…The consumption index observed on all these treatments (1.28 ± 0.01; 1.76 ± 0.20; 1.86 ± 0.10; 1.69 ± 0.02; 1.74 ± 0.12) are all higher (0.81 ± 0.15) than those obtained by [23] respectively. However, all these indices are lower (1.9) than [25].…”

Modèle de distribution des nématodes chez le poisson chat (Clarias anguillaris (Linnaeus, 1758)) dans deux réservoirs du Burkina Faso (Afrique de l’Ouest)

“…Les nématodes affectent beaucoup d'espèces de poissons d'élevage et de poissons sauvages (Gibbons, 2010). Clarias anguillaris (Linnaeus, 1758) est un poisson prisé par la population du Burkina Faso et peut être utilisé en élevage (Compaoré et al, 2016). Il est consommé frais, fumé ou frit.…”