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Direct Research Journals
Vol.2 (1), pp.1-7,January 2014
ISSN: 2354-4147

Comparison of the growth performance of Achatina fulica and Achatina achatina as influenced by housing types.(Direct Research Journal of Agriculture and Food Science (DRJAFS) Vol.2 (1), pp.1-7,January 2014
Article Number: DRJA17088647
DOI:

Original Research Article


Mogbo Tochukwu Chinedu

 


Department of Zoology, Nnamdi Azikiwe University, Awka, Nigeria.


date Received: December 11, 2013     date Accepted: January 15, 2014     date Published: January 30, 2014

Abstract

This research carried out for a period of thirty six (36) weeks, compared the influence of housing types on growth performance of two edible snail species (Achatina fulica and Achatina achatina). One hundred and eighty (180) juvenile snails were used (90 0f each species) and thirty (30) snails of each species were subjected to each of the three housing treatments in replicates of 15 snails per replicate. The housing treatments had the same dimensions (120 cm x 60 cm x 30 cm) and were labeled: Treatment A (Hutch box), Treatment B (Trench pen) and Treatment C (Mini-paddock pen). The housing treatments and their surroundings were fitted with a digital thermometer and hygrometer to take daily readings of internal and ambient temperature and humidity respectively. The snails in each replicate were fed daily rations of 60 g of dry Guinea corn bran, 50 g ground egg shell and water was also supplied. The growth parameters investigated were: weekly weight gain, weekly shell length increase and weekly shell circumference increase. Other parameters investigated were mortality, hibernation, temperature and humidity variations. Treatment C produced the highest yield in all the growth parameters for both Achatina fulica and Achatina achatina and the means of the weight gain and shell circumference were statistically significant (P ≤ 0.05) at 3, 6 and 9 months for Achatina achatina but were not significant for Achatina fulica. The means of the shell length increase was also not significant (P > 0.05) for both snail species at 3, 6 and 9 months. The least snail mortality and hibernation for both snail species was observed in treatment C. The temperature variation was lowest in Treatment C (4.0o C) and highest in Treatment B (6.9o C). The humidity variation was also lowest in C (14.5%) and highest in Treatment B (15.9%). Treatment C proved to be the best housing type for the production of snail and the study recommends that it be used as nursery, growing and fattening pens for rearing Achatina achatina in the tropics to produce best result while any of the housing types can be used for rearing Achatina fulica.


Key words: Achatina fulica, Achatina achatina, Snail, Housing.