断奶和幼虫饮食对银托管生存和生长的初步试验(Leiopotherapon Plumbeus)幼虫
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抽象的
通过从活食物的早期断奶到人工饮食,可以通过早期断奶来实现银幼虫的幼虫饲养。进行了两次实验,以研究(a)断奶年龄(突然和逐渐)和(b)幼虫饮食(人工和活食物)对银托管的生存和生长(Leiopotherapon plumbeus)的影响。在第一次实验中,幼虫在每条盆地的15只幼虫的圆形4-L塑料盆中随机储存,以提供四种断奶年龄处理(分别在孵化或DAH后8,14,20和26天的三倍递增次数。幼虫每天用21天喂食三次,并用用作对照的桡骨(COP)。幼虫在26dah断奶,治疗组中的存活率最高,体重和总长度,与对照的相当。In the co-feeding protocol, larvae were fed Artemia nauplii (ART) as the control group and co-fed with either zooplankton i.e. 50% COP + 50% CF or 50% ART + 50% CF for 8 (8-15 DAH), 6 (14-19 DAH) and 4 (20-23 DAH) days, and suddenly weaned to FM until 21 days. Survival ranged from 22.2 ± 16.8 to 40.0 ± 24.0% between treatments, but was still lower than the control (88.9 ± 3.8%). Body weight and total length were significantly higher in larvae with co-feeding for 4 days (70.1 ± 2.8 mg; 18.1 ± 0.8 mm), but were still lower than that of the control (142.8 ± 7.6 mg; 22.3 ± 0.3 mm).
在第二个实验中,在4只幼虫L-1的20-L玻璃水果中储存了26日幼虫。幼虫饮食((i)商业虾饲料(38%粗蛋白);(ii)Artemia Nauplii;(iii)桡足类;(iv)自由活的线虫Panagrellus Redivivus每天服用两次28天。生存在幼虫喂养蒿甲虫喂养的幼虫肝癌中的生存率最高。玉米牛皮饮食的最终总长度(TL)高于喂养的桡足类或线虫。然而,幼虫喂养Artemia Nauplii(T1 = 24.30±0.81mm; BW = 156±8毫克的最佳增长;特异性生长速率或SGR = 5.33±0.19%/ d)。
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摘要。
建议引用
Aya,F. A.,Nillasca,V.S.N.,&Garcia,L. M. B.(2015)。断奶和幼虫饮食对银疗法(Leiopotherapon Plumbeus)幼虫生存和生长的初步试验。In M. R. R. Romana-Eguia, F. D. Parado-Estepa, N. D. Salayo, & M. J. H. Lebata-Ramos (Eds.), Resource Enhancement and Sustainable Aquaculture Practices in Southeast Asia: Challenges in Responsible Production of Aquatic Species: Proceedings of the International Workshop on Resource Enhancement and Sustainable Aquaculture Practices in Southeast Asia 2014 (RESA) (p. 333). Tigbauan, Iloilo, Philippines: Aquaculture Department, Southeast Asian Fisheries Development Center.