PROXIMATE COMPOSITION OF SELECTED FEEDSTUFFS AND THEIR PREFERENCE BY GROWING GIANT AFRICAN LAND SNAIL, ARCHACHATINA MARGINATA

Authors

  • D. O. Layade Department of Wildlife and Ecotourism Management, Faculty of Renewable Natural Resources, University of Ibadan, Ibadan, Nigeria
  • G. A. Lameed Department of Wildlife and Ecotourism Management, Faculty of Renewable Natural Resources, University of Ibadan, Ibadan, Nigeria
  • O. A. Ogunwole Agricultural Biochemistry and Nutrition Unit, Department of Animal Science, University of Ibadan, Ibadan, Nigeria.

Keywords:

Cafeteria feeding system, Coefficient-of-Preference, Crude fibre, Crude protein, Feed Intake

Abstract

The chemical composition and preference of selected feedstuffs by giant African land snail (GALS) were investigated for a period of 14 days. Growing GALS (n=240) weighing 60±5g were sourced from the local market and randomly allotted to six experimental cubicles (40 snails/unit). Each experimental cubicle measured 1.25m×1.0m×0.74m. Using a cafeteria feeding system, 100g of each feedstuff; Maize Chaff (MCh), Pawpaw Leaf (PL), Pumpkin Leaf (PuL), Pawpaw Fruit (PF), Moringa Leaf (ML) and Formulated Feed (FF) containing 24% crude protein and 3200 kcal/kg ME were positioned semi-circularly away from the GALS in the cubicle between 17:00 and 19:00 hours and alternated daily. Feeding responses (number of visits/feed) were monitored using CCTV. Feed Intake (FI, g) and Co-efficient of Preference (CoP) were calculated. Results indicated that the crude protein of 33.15% (ML) and 32.31% (PL) were similar and significantly higher than 4.22% (MCh) which was the lowest. Crude fibre ranged from 4.26% in FF to 37.43% in PF while ether extract was significantly higher (p<0.05) in FF (4.51%) and least in MCh (1.55%). The GALS visitations to PF (398±12.5) were highest, followed by MCh (376±8.8) and least for PL (89±8.4). The FI of GALS on MCh (38.5), PF (15.3) and FF (5.12) were significantly higher (p<0.05) than in PuL (1.59), PL (1.57) and ML (1.32). Only GALS on MCh (3.64) and PF (1.45) had CoP above unity. Maize chaff and pawpaw fruit were most preferred by the GALS. This preference in this study was adduced to higher crude fibre and lower fat content.

Published

2020-06-30