Snail farming in Nigeria has gained a good ground in the rural communities but the technology of rearing them on a large scale production is still lacking (Owolabi 2010; Ismail, 2009), although workers on this animal had previously established the potentials that the animal possess (Thompson and Cheney, 2008). Omole (2003) and Fagbuaro et al. (2006) reported that snail meat contained high quality protein and essential amino acid Bender (1992) which could be used as supplement to the present protein requirement obtained from conventional livestock sources such as beef, pork, goat meat, mutton and poultry.
Bright (1999) emphasized that snail meat contains low fat and low cholesterol in proportion that makes snail meat a good antidote for hypertensive patients and those that have fat related diseases i.e. arteriosclerosis.
Also, the shortage of animal protein as well as the serious search for a little or no cholesterol containing meat in the developing countries makes Nigerians to have interest in the production of highly nutritious, medically important and an efficient by product utilize like snail (Cobbinah, 1993; Hamzat, 2004).
There is extensive work on the biology of snail, Segun (1975), Bright (1999) and Imevbore (1990) but there are several gaps yet to be filled in the knowledge of the requirement for snail farming in Nigeria and West Africa.
The good potential of snails farming in Nigeria and other parts of West Africa (Ademolu et al, 2004) can be realized when the gaps in the knowledge of snails and snail farming requirements have been filled.
One of such aspect yet to be fully elucidated is the hatching of eggs of snails artificially. It is in this light that this study was carried out to provide information on the survival rate of artificially hatched eggs of African giant land snail to tap the potential of this animal as backyard home animal.
Therefore, this study determines the survival rate of artificially hatched eggs, hatched on different incubation days with the view to determining the number of days effective for large scale production.
Feeding behavior of layer hens supplemented with snail or oyster shells in the last laying phase: effects on egg quality
M F Hound
Snail eggs are usually small grape-like structures and are found in clusters. Usually, the eggs are laid on the side or the cover of an aquarium. For proper growth of the eggs, they need a heat source nearby and a dry environment.
Usually, it would take about 5 weeks for the eggs to hatch. Take note of when the eggs were laid, and if the eggs don’t hatch by the 5th week, you need to gently remove the eggs from that place, gently break it in half, and check if there is a tiny baby inside. If there is, it means they are ready to hatch, you just need to place them back into the water and let them float.
On the other hand, if you don’t see any baby, it means the eggs are infertile, so you should discard them. By the 2nd week, take a look at their appearance. If they are growing they would appear slightly dark in color. As they approach the 5th week, they are dry and whiter. You can use an incubator to hatch them or either of the two methods – partitioning and plastic canvas, which have been described below:
Partitioning the Tank
This method of breeding is slightly easier compared to the plastic canvas method. The warm environment of the tank is used to incubate and hatch the eggs. For this, you need to get a net breeder and install them on the shorter side of the tank so that the tank is partitioned. You don’t necessarily need to install artificial plants into it. Place a plastic canvas sheet on top of the tank, adjusting it with the help of metal hooks in such a way that when you place the eggs on the plastic canvas, they are placed on one side of the tank partitioned by the net breeder.
You need to place the plastic canvas a couple of inches below water, so that the eggs get enough nutrients. Once you have done that, you need to keep it in that position for the next five weeks till the eggs hatch. This method is helpful if you intend to keep the babies in the same tank and just want to control the areas in which they hatch, mind u dis for water snail.
The study determines the survival rate of artificially hatched eggs of African Giant Land Snail Achachatina marginata, hatched on different incubation days with the view to determining the number of days effective for large scale production.
A total of 100 eggs were incubated for the experiment. The eggs were hatched from the 16th day of incubation at an interval of 2 days to the 30th day while others hatched naturally on the 34th day of incubation.
The results revealed that the highest percentage hatchability, 100% was recorded on the 34th day of incubation while the least, 40% was recorded on the 16th day of incubation. The work also demonstrated that the survival rate of hatchlings increased with incubation days. Hatchlings at 16th day of incubation had no survival while those hatched after 22nd day had 100% survival rate each at the end of the two weeks of observation.
For large scale farming, the eggs of African Giant Land Snails can be hatched as from the 22nd day of incubation because there was no significant difference between the survival rate of those hatched on this day and those hatched on the 30th day of incubation.
Get real time update about this post categories directly on your device, subscribe now.