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罗非鱼由于雄性生长较快、生长期长、个体较大,所以全雄性养殖能促使增产。 Pruginig(一九六七年)每公顷放养1000～1500尾,平均体重50克的全雄性杂种(Sniloticua×Shornrcum), 饲养100～150天,养殖期间没有投肥施饵,收获时的平均个体重200～450克,每天每尾鱼增重1.5～3.0斤,Shell(一九六八年)采用人工投饵,进行了雄性尼罗罗非鱼养殖实验。发现生长率与鱼的密度无关,即使密度高达每公顷5000尾,每天每尾仍能增重2.1～2.3克,饲养163天产量达1.6吨/公顷。饵料系数是2.31。
Tilapia grow faster because of males, grow long, larger individuals, so all male breeding can promote yield. Pruginig (1967) stocked 1,000 to 1,500 hectares per hectare of whole male hybrids (Sniloticua × Shornrcum) with an average body weight of 50 g and were kept for 100-150 days with no fertilizers applied during the cultivation period. The average body weight at harvest 200 to 450 grams per day weight gain of 1.5 to 3.0 kg per tail fish, Shell (1968) using artificial feeding, male Nile tilapia farming experiments. The growth rate was found to be independent of the density of the fish. Even at densities as high as 5000 per hectare, there was an increase of 2.1-2.3 grams per day per tail and a yield of 1.6 tons / ha for 163 days. The feed coefficient is 2.31.