Effects of varied levels of incorporation ofLabeo goniusin carp polyculture system in India

Abstract

Growth performance of kuria labeo, Labeo gonius as a component species in the major carp polyculture system was evaluated at two incorporation levels against a control without the species through a year‐round grow‐out study in nine earthen ponds (0.08 ha). Three species ratio of catla, silver carp, rohu, mrigal and kuria labeo at 15:15:40:30:0 (T‐1: control), 15:15:40:20:10 (T‐2) and 15:15:40:10:20 (T‐3) were evaluated as three treatments. The carps were stocked at a combined density of 7500 fingerlings ha−1. Silver carp demonstrated the highest survival (75–81%) followed by rohu (70–76%), catla (69–76%), kuria labeo (69–71%) and mrigal (67–69%). Species‐wise yield attributes such as survival, harvest weight, SGR and biomass yield of silver carp, catla and rohu were similar in their respective treatments. Kuria labeo at 10% inclusion demonstrated 12% higher harvest weight than its 20% inclusion. However, such higher weight gain could not affect the total biomass yields of carps which remained similar among the treatments. Furthermore, harvest weight of kuria labeo at 10% inclusion was comparable to that of mrigal when the latter incorporated at 20–30% level. Therefore, the study suggested 10% to be a suitable incorporation level for kuria labeo in the commercial grow‐out carp polyculture system.

Effects of different feeding regimens on co-rearing of Labeo gonius and L. rohita: Unveiling growth, survival, and condition in concrete tanks

“…This may be due to the hardier nature of L. gonius, which is adapted to bottom-dwelling habitats. These ndings align with previous studies on sh co-culture Jena et al, 2015). In comparison to the present study, reported the dominance of L. gonius over L. rohita in terms of both growth and survival in their rearing with L. mbriatus and Puntius gonionotus.…”

Fermented mahua oil cake in the diet of Labeo rohita: effects on growth performance, digestive enzyme activity and immune response

“…They were stocked with 350 fish in total, resulting in a stocking density of 14,414 fish per hectare (Ayyappan and Jena, 2003). The ponds were fertilized by following the standard protocol (Jena and Das, 2006). The fishes were fed ad libitum with roughly 3% of their weight twice a day for five months.…”