Sayouh Mohamad, Ali Masoud, Li Yan, Tao Yi-Fan, Lu Si-Qi, Qiang Jun
Freshwater Fisheries Research Center, Chinese Academy of Fishery Sciences, Wuxi Fisheries College, Nanjing Agricultural University, Wuxi 214081, China.
Research Center of the General Authority for Fish Resources and Aquatic Life, Tartous 96343, Syria.
Animals (Basel). 2024 Oct 14;14(20):2954. doi: 10.3390/ani14202954.
This study compared the growth and flesh quality of juvenile male and female Nile tilapia grown in separate RAS tanks. The Genetic Sex Determination method yielded 40 males and 40 females. Males grew longer and heavier than females, and the results showed significant variation between the sexes in terms of weight gain rate (WGR), specific growth rate (SGR), and final body length and weight. In terms of the feed conversion ratio (FCR), Gonad Somatic Index (GSI), and Viscera Somatic Index (VSI), females presented better results than males. Male and female Hepatosomatic Index (HSI) values did not differ significantly-no difference in blood serum values. The meat's moisture and crude protein composition did not alter significantly from male to female; however, the crude fat and ash levels did differ significantly. Male and female animals were given the same seventeen distinct types of amino acids, and there was no distinct variation in the profiles of total amino acids (TAAs) and essential amino acids (EAAs) between the sexes. However, in the non-essential amino acid (NEAA) category, there were marginally significant differences, wherein females performed better than males. Males and females differed considerably in crude fat and ash levels but not in the moisture content or crude protein composition of the meat. Regarding fatty acids, males outperformed females in terms of total fatty acids (TFAs), polyunsaturated fatty acids (PUFAs), and saturated fatty acids (SFAs). However, no significant difference in the amount of monounsaturated fatty acids (MUFAs) in muscle was found between males and females.
本研究比较了在独立循环水养殖系统（RAS）水箱中生长的尼罗罗非鱼幼鱼的生长情况和肉质。遗传性别鉴定方法产生了40尾雄性和40尾雌性尼罗罗非鱼。雄性尼罗罗非鱼比雌性生长得更长、更重，结果表明，在增重率（WGR）、特定生长率（SGR）以及最终体长和体重方面，两性之间存在显著差异。在饲料转化率（FCR）、性腺体指数（GSI）和内脏体指数（VSI）方面，雌性的结果优于雄性。雄性和雌性的肝体指数（HSI）值没有显著差异——血清值也没有差异。鱼肉的水分和粗蛋白组成从雄性到雌性没有显著变化；然而，粗脂肪和灰分水平确实存在显著差异。雄性和雌性动物摄入了相同的17种不同类型的氨基酸，两性之间的总氨基酸（TAA）和必需氨基酸（EAA）谱没有明显差异。然而，在非必需氨基酸（NEAA）类别中，存在微小的显著差异，其中雌性表现优于雄性。雄性和雌性在粗脂肪和灰分水平上有很大差异，但在鱼肉的水分含量或粗蛋白组成上没有差异。关于脂肪酸，雄性在总脂肪酸（TFA）、多不饱和脂肪酸（PUFA）和饱和脂肪酸（SFA）方面表现优于雌性。然而，雄性和雌性肌肉中的单不饱和脂肪酸（MUFA）含量没有显著差异。
