Abstract
In this paper, a 32% commercial diet of protein for tilapia fingerlings (Oreochromis sp.) commonly used in fish farms in the country and cricket meal in a mixture with 32% corn flour as a protein was compared alternative food The breeding, raising and fattening unit of crickets (Gryllus assimilis) was implemented for its subsequent sacrifice and transformation into flour and used as a source of protein in the diet, these gained a weight of 0.70 g. To accommodate the fry, plastic tanks with a capacity of 1 m3 were used, the water was sucked by means of an electric pump; with permanent aeration where 15 individuals of red tilapia per m3 were planted with an average weight of 5 g which reached an average weight/fish/day of 26 g, a growth/fish/day of 0.86 g, the total biomass was 340 g, and a feed conversion factor (FCA) of 1.16. According to the Student’s T analysis and a comparison of means, no differences were found, with a correlation of 83.1% between the food supplied and the increase in weight, the water parameters were found at an optimum level. The protein percentage of cricket flour ranges between 15% and 80% depending on the geographical area, those that were used in the local ration have 58.16% of crude protein and 9.32 of protein nitrogen, the two rations in comparison had a protein content of 32%.
Highlights
The aim is to seek sustainability in long-term animal production, looking for alternative ingredients to conventional ones, since over time, the cost of production has increased by using other food sources rich in proteins such as soybean meal, wheat or other fish (Khan et al, 2016)
The objective of this work is to know the growth of tilapia fingerlings (Oreochromis sp.) in controlled environment feeding on cricket meal (Gryllus assimilis) as an alternative food compared to the growth of commercial rations elaborated for the culture of pond fish and commonly used by the local fish farmer
This could be due to the amount of nutrients contained in the cricket meal, since it has all the necessary nutrients for the good biological development of the fish, where the tilapia takes advantage of 75% of the protein contained in the crickets, these results affirm the substitution of fishmeal for cricket meal as a source of protein in the diet of fish (Ogunji et al, 2008; Alegbeleye et al, 2012; Emehinaiye, 2012; Jabir et al, 2012)
Summary
The aim is to seek sustainability in long-term animal production, looking for alternative ingredients to conventional ones, since over time, the cost of production has increased by using other food sources rich in proteins such as soybean meal, wheat or other fish (Khan et al, 2016). The creation of insects is an alternative as a source of nutrients for animal feed, since according to Van Huis et al (2013) is a way to increase the protein source in human and animal nutrition, being an increasingly booming research area to benefit the aquaculture industry (Hardy, 2010). Tilapia (Oreochromis sp.) is well accepted in the market of Latin American countries, especially in Mexico, Ecuador and Colombia (Avnimelech, 2007) standing out for its favorable characteristics such as rusticity, sexual precocity and tolerance to different environmental conditions (El-Sayed, 2006).
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