不同的料颗粒大小对鱼,Procambarus clarkii幼虫的生长性能和营养成分的影响
Qingqing Jiang1,2, Silei Xia1, Zhiqiang Xu3
1College of Marine and Biology Engineering, Yancheng Institute of Technology, Yancheng 224051, China.
Animals : an open access journal from MDPI
|August 10, 2024
概括
优化鱼幼虫的料颗粒大小可以显著提高生长和营养含量. 幼虫鱼料的理想范围在0.71到0.85毫米之间,以提高性能.
科学领域:
- 水产养殖是水产养殖的一种方式.
- 动物营养 动物营养
- 甲动物生物学 甲动物生物学
背景情况:
- 料大小对于水生幼虫的生长至关重要.
- 了解最佳的料颗粒大小对于鱼水产养殖至关重要.
研究的目的:
- 研究不同料颗粒大小对幼虫生长,体质组成和肌肉营养成分的影响.
- 为了确定幼虫的最佳料颗粒大小.
主要方法:
- 在100天内,对2000只幼虫进行了5种不同的料颗粒大小 (<0.40毫米至1.5毫米) 的测试.
- 分析了生长表现 (体重增加,特异性生长率),料转化率,身体组成,肌肉氨基酸和脂肪酸概况.
- 使用断线回归和主要成分分析来确定最佳尺寸和营养影响.
主要成果:
- 增加料颗粒大小通常会改善最终重量,体重增加 (WG) 和特定生长率 (SGR),然后平稳.
- 料转化率 (FCR) 随着颗粒大小的增加而下降,除了对照组.
- 特定的颗粒大小 (0.71-0.85毫米和0.90-1.00毫米) 显示出明显更高的原始蛋白质,必需氨基酸和脂肪酸 (氨基,氨基,DHA,EPA).
结论:
- 根据SGR和FCR,幼虫的最佳料颗粒大小约为0.55毫米.
- 料颗粒大小在0.71-0.85毫米 (C组) 之间提供了增长性能和增强肌肉营养成分 (蛋白质,氨基酸,脂肪酸) 的最佳平衡.
- 对于幼虫鱼,推的食颗粒大小在0.71到0.85毫米之间,以获得最佳的水产养殖结果.
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