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The plan is to encourage aquaculture companies to apply the simplest biotechnological method of sex changing to their 50/50 male-female production to produce near 100% of female. Most markets do not buy male trouts that reached their sexual maturity, which happens a year before females' sexual maturity is reached. Aqua farms want to sell fish at higher grammages in order to produce the best income. However, it becomes risky for farms to feed the fish to greater masses without reaching their sexual maturity, which is not a very long time for male trouts. If sex changing method is applied more widely by the aquaculture companies, they would not have to increase their prices of final products to cover up their expenses of purchasing full-female eggs. In the end, ultimate goal is to help lower the prices of the trouts, which might be the solution to prevent world hunger.

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Theoretical production scheme for both scenarios..

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Figure 7. The Effect of Estradiol Valerate on Sex Reversal of Rainbow Trout, Oncorhynchus mykiss. (Guzel et al., 2006).

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Usual spawn (Control) is 49/51male to female, respectively. Specialized solution fed fish (EV (20 mg k^-1 diet)) produces 97% of female. Therefore, very profitable.

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Figure 10. Hatched. (McGarthwaite, 2002).

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At this stage, they absorb their yolk sac (yellow ball that is attached to the fish). It is very nutrient dense, and provides them with the essentials for their proper development.

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Figure 14. Cedar Planked Rainbow Trout Fillet. (Jackie, 2015).

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Voilà! Bon Appétit. Enjoy.

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Figure 13. Your Fresh Market Rainbow Trout Fillets. (Your Fresh, n.d.).

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In the end, this is what is located in your nearest supermarket.

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Figure 11. Trout and Salmon Culture (Hatchery Methods). (The Regents of The University of California, 2009)

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When their yolk sacs are fully absorbed, they swim through the troughs.

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When their yolk sacs are fully absorbed, they swim through the troughs.

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In order to change the sex of the fish, two methods can be applied. This presentation emphasize on one of them. Here, they are fed six to seven times a day with the specialized feed that contains estrogen in very little amounts. Eventually, fish develop as females.

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Figure 9. Superior trout eggs since 1960. (Sangild Dambrug Aps, 2013).

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Egg stage yet.. They show great signs of life in these funny little balls (eggs). Fish, at this point, are easily manipulatable into the desired sex choice, because of the simplicity of sex in lower-vertebrates.

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Figure 8. Oncorhynchus mykiss. (Food and Agriculture Organization of the United Nations, 2005).

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Guess what? When males are only used for reproductive purposes, scheme goes on the same exact order. Therefore, sex changing method does not harm to typical life cycle of the fish.

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Figure 12. Trout. (Extension, 2012).

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Here, fish get bigger and fatter before they are sent to growout (a place that is specifically designed to feed the fish to greater masses) or directly to the market.

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Figure 5. Rainbow Trout, Iwana Trout & Sakura Trout at Kakishima Trout Farm in Fujinomiya City! (Dragonfire, 2012).

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Figure 6. Telling The Difference Between Male And Female Trout. (Gareth, 2015).

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Female rainbow trouts taste significantly better than male and are more profitable. First, male trouts already lack the quality of taste by the perspective of table standards, and even worsens once they reach their sexual maturities. Second, male's sexual reproduction organ becomes to be almost half of its body mass two to three months before and after the sexual season, which becomes greatly and unnecessarily expensive for the farming company. Male trouts' reproductive organs cannot be consumed, therefore it is an unnecessary expense for the company that feeds it. Female trouts do not have such problem that comes with sexes, therefore are more profitable.

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The plan is to start farming female rainbow trouts.

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The plan is to start farming female rainbow trouts.

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Why? Fish is nutritious for consumption and one of the most effective type of animal breeding in terms of simplicity and results. However, only female rainbow trouts are desired on the market, which becomes another expense for the farming company. Most of the companies, due to the lack of the facilities and experts, buy fully-female eggs (explained later in the presentation), increasing their expenses. These expenses are later on added to the prices of the final products in order to cover their expenses.

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Figure 4. Rainbow trouts. (Anonymous, n.d.).

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Anonymous. (n.d.). Hooke Springs Trout Farm [Online Image]. Retrieved December 11, 2017, from
http://www.hookespringstrout.co.uk/
Dragonfire. (2012, September 12). Rainbow Trout, Iwana Trout & Sakura Trout at Kakishima Trout Farm in Fujinomiya City! [Online Image]. Retrieved December 11, 2017, from
https://shizuokagourmet.com/2012/08/30/rainbow-trout-iwana-trout-sakura-trout-at-kakishima-trout-farm-in-fujinomiya-city/
Earth Policy Institution. (n.d.). The world is approaching Peak Meat, producing 7 times more than in 1950 [Online Image]. Retrieved December 11, 2017, from
https://qz.com/93900/we-produce-6-times-more-meat-than-we-did-in-1950-heres-what-that-means-for-animals-and-the-earth/
Extension. (2012, October 16). Trout [Online Image]. Retrieved December 11, 2017, from
http://articles.extension.org/pages/58708/trout
Food and Agriculture Organization of the United Nations. (2005, June 15). Oncorhynchus mykiss (Walbaum, 1792) [Online Image]. Retrieved December 11, 2017, from
http://www.fao.org/fishery/culturedspecies/Oncorhynchus_mykiss/en
Gareth. (2015, September 14). Telling The Difference Between Male And Female Trout [Online Image]. Retrieved December 11, 2017, from
http://fishthefly.co.za/difference-between-male-and-female-trout/
Guilford, G., & King, R. (2013, June 13). The world is approaching Peak Meat, producing 7 times more than in 1950. Retrieved December 11, 2017, from
https://qz.com/93900/we-produce-6-times-more-meat-than-we-did-in-1950-heres-what-that-means-for-animals-and-the-earth/
Guzel, S., Gullu, K., & Ozden, O. (2006). The Effect of Estradiol Valerate on Sex Reversal of Rainbow Trout, Oncorhynchus mykiss [Online Image]. Retrieved December 11, 2017, from
http://scialert.net/fulltext/?doi=biotech.2006.240.243&org=11
Hunt Cook: Catch and Serve! Wikia. (2016). Rainbow Trout [Online Image]. Retrieved December 11, 2017, from
http://huntcook.wikia.com/wiki/Rainbow_Trout
Jackie. (2015, August 09). Cedar Planked Rainbow Trout Fillet [Online Image]. Retrieved December 11, 2017, from
https://jsprat.wordpress.com/2015/08/09/cedar-planked-rainbow-trout-fillet/
McGarthwaite, S. (2002, May 6th). Trout Spawning, Hatchery Style [Online Image]. Retrieved December 11, 2017, from
http://flyanglersonline.com/begin/hatchery/hatchery.php
Sangild Dambrug Aps. (2013). Sangild Dambrug | superior trout eggs since 1960 [Online Image]. Retrieved December 11, 2017, from
http://sangilddambrug.dk/
The Regents of The University of California. (2009). Trout and Salmon Culture (Hatchery Methods) [Online Image]. Retrieved December 11, 2017, from
http://www.oac.cdlib.org/view?docId=kt5q2nb139&chunk.id=d0e1175&brand=oac4&doc.view=entire_text
UN Population Division. (2015). World Population Growth [Online Image]. Retrieved December 11, 2017, from
https://ourworldindata.org/world-population-growth/
Your Fresh Market. (n.d.). Your Fresh Market Rainbow Trout Fillets [Online Image]. Retrieved December 11, 2017, from
https://www.walmart.ca/en/ip/your-fresh-market-rainbow-trout-fillets/6000193605438

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Figure 3. Rainbow trout. (Hunt Cook: catch and Serve! Wikia, 2016).

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Here is the real deal. An actual image of what rainbow trouts look like.

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THESE ONCORHYNCHUS MYKISSES
aka. RAINBOW TROUTS

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Figure 1. World population growth. (UN Population Division, 2015).

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Figure 2. Amount of meat consumed throughout the years. (Earth Policy Institution, n.d.).

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"Meat production has increased more than 600% since 1950, and demand certain types of meat are already taxing the limits of the Earth’s ability to produce them" (Guilford, 2013).

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The world's population is increasing tremendously, and this will eventually be causing depletion of resources, leaving majority of population in hunger. However, with the birth to new eras like biotechnology to feed more people and help preserve the resources, one of the simplest sex changing method of aquaculture may be a great help to solving the potential hunger problem

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World population was determined to be 7.4 billion, in 2015. By 2100, it is estimated to sit at 11.2 billion. This is quite of a significant number of individuals to feed, considering population and hunger goes correlated.