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Precision shrimp genetics for local success Robbert Blonk, Hendrix Genetics

In this article, we will take this concept further to a global level. We will show there is a significant value of breeding for the entire shrimp value chain. We will show the impact of interactions for this value. In addition, we will show this justifies investment in central, expert organized breeding programs with local breeds and feeds.

In our previous article in Hatcheryfeed Magazine, May 2019, we showed that precision farming needs precision feeding and precision breeding. We explained how different environments and feeds require different breeding strategies to optimize performance. This is caused by what breeders call “Genotype by Environment” (GxE) or “Genotype by Diet” (GxD) interactions. We gave several examples based on our own experience and literature. For example, trials with the Hendrix Genetics’ Kona Bay soy tolerant strain of whiteleg shrimp showed 24 percent faster growth on soy diets compared to regular shrimp diets based on fishmeal. Conversely, shrimp selected for growth on regular diets do not thrive as well on diets with a high level of soy. Based on this research, we concluded that specific diets need a specific shrimp or vice versa.

Hatcheryfeed Vol 7 Issue 3 2019

Global shrimp, local solutions Global shrimp production is dominated by two species, namely white leg shrimp and black tiger shrimp. However, the environments where these animals are cultured are diverse. Although the common denominator is the equatorial band as main production area, that’s really where the similarities end. Shrimp are produced in Europe, Middle East, Africa, India, Bangladesh, South East Asia, China, Latin America, Central America; even in RAS systems which can be located virtually everywhere. Other factors as high or low-density growth conditions, different feed quality and types, and pressure from different diseases add to the mix that justifies precision breeding. The benefits of using the right strain For a breeding company, it is tempting to breed one solution - one strain - to supply the industry, as obviously this is cheaper with investment and R&D costs spread out over a large volume. However, if one considers the value of a precision breeding program for the shrimp value chain, different conclusions should be drawn. For example, let’s have a look at the typical output of a breeding program, called the genetic response. The genetic response is the improvement of a population compared to the previous generation due to genetics. An achievable value for long term genetic response for growth in a typical well-organized

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Hatcheryfeed vol 7 issue 3 2019  

Hatcheryfeed is dedicated to feed and nutrition for early life stage and broodstock aquatic species for commercial hatchery operators and su...

Hatcheryfeed vol 7 issue 3 2019  

Hatcheryfeed is dedicated to feed and nutrition for early life stage and broodstock aquatic species for commercial hatchery operators and su...