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首页> 外文期刊>Aquaculture Research >Relative performance of two Nile tilapia (Oreochromis niloticus Linnaeus) strains in Egypt: the Abbassa selection line and the Kafr El Sheikh commercial strain.
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Relative performance of two Nile tilapia (Oreochromis niloticus Linnaeus) strains in Egypt: the Abbassa selection line and the Kafr El Sheikh commercial strain.

机译：在埃及，两种尼罗罗非鱼（Oreochromis niloticus Linnaeus）菌株的相对性能：Abbassa选择系和Kafr El Sheikh商业菌株。

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The Abbassa selection line (developed by selective breeding) and the Kafr El Sheikh commercial strain (widely used in Egypt), both Oreochromis niloticus, were compared at two stocking densities (two and four fish m-2). Harvest weight, length, depth, width and head length were recorded. The Abbassa line showed a superior harvest weight (28 per cent) over the Kafr El Sheikh strain. Males were heavier than females, but the between-sex difference was greater in the commercial than in the Abbassa line (39 and 31 per cent respectively). Females in the Abbassa line grew almost as fast as males in the commercial line. Both strains grew faster at the lower density, and the percentage reduction in harvest weight at the higher density was about the same for both strains (27 per cent). The advantage of the Abbassa line was 28 per cent at both densities. Both strains had a similar survival rate (approximately 80 per cent) during the grow-out period. We conclude that the Abbassa line is ready for release to the tilapia industry in Egypt. Further evidence is being sought in currently underway on-farm evaluations. Measures should be taken to ensure the long-term viability of the Abbassa line.Digital Object Identifier http://dx.doi.org/10.1111/j.1365-2109.2012.03240.x
机译：在两个放养密度下（两个和四个鱼m -2 ）比较了Abbassa选择系（通过选择性育种开发）和Kafr El Sheikh商业品系（埃及广泛使用），它们都是尼罗罗非鱼。 。记录收获物的重量，长度，深度，宽度和头长。与Kafr El Sheikh品系相比，Abbassa品系表现出更高的收获重量（28％）。男性比女性重，但商业广告中的性别差异比Abbassa品系更大（分别为39％和31％）。阿巴萨（Abbassa）系的雌性增长几乎与商业系中的雄性一样快。两种菌株在较低密度下生长更快，而在较高密度下，两种品种的收获重量减少百分比大致相同（27％）。在两种密度下，Abbassa系列产品的优势均为28％。两种菌株在成长期期间的存活率相似（约80％）。我们得出的结论是，Abbassa生产线已准备好向埃及的罗非鱼产业发布。当前正在进行的农场评估正在寻求进一步的证据。应采取措施确保Abbassa系列产品的长期使用寿命。数字对象标识符http://dx.doi.org/10.1111/j.1365-2109.2012.03240.x

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