HATCHERY Feed & Management Vol 8 Issue 2 2020

Page 34

34

Field trial of a feed additive for juvenile hybrid tilapia used in a commercial farm during a natural outbreak of Tilapia Lake Virus (TiLV) in Israel Yechiam Shapira, Natan Wajsbrot, Allan Heres, Phibro Animal Health

Tilapia culture was established in Israel around 1930 in the northern region of the country. Several endemic species are common in Israel such as Tilapia zilli, Oreochromis aureus, Sarotherodon galilaeus and Oreochromis niloticus. The most common strain for commercial culture is the hybrid between O. niloticus and O. aureus (Zak et al., 2014). This hybrid tilapia has the advantages of the O. niloticus for growth and the resistance for cold water of the O. aureus.

Hatchery Feed & Management Vol 8 Issue 2 2020

TiLV outbreaks in tilapia Mortalities of tilapia were found in Israel in 2008 at the Galilee Lake, but was officially reported to be TiLV by Eyngor et al. in 2014. As of 2016, countries affected by this emerging disease include Israel, Ecuador, Colombia and Egypt. In 2017, Thailand and Chinese Taipei confirmed the presence of the virus among farmed tilapia, which also caused mass mortalities. In the outbreak reported by Ferguson et al. (2014) and Dong et al. (2017) fingerlings were mainly affected.


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