在Pseudoplatystoma sp.共同养阶段的食中的水分含量. 影响表现和消化过程
Larissa Selini Dorce1, Antonio Cesar Godoy2,3, Rudã Fernandes Brandão Santos4
1Faculdade de Ciências Agrárias, Universidade Federal da Grande Dourados, Rodovia Dourados - Itahum, km 12, Dourados, 79804970, Mato Grosso do Sul, Brazil.
Veterinary research communications
|July 3, 2024
概括
具有8-24%水分含量的经济有效的饮食在关键的联合养阶段改善了鱼的生长和蛋白质效率,为水产养殖提供了活食的可行替代品. 这项研究通过降低成本和增强幼虫发育,有利于养鱼.
科学领域:
- 水产养殖营养水产养殖营养
- 鱼类幼虫发展发展
- 可持续水产养殖实践 可持续水产养殖实践
背景情况:
- 活食对新热带鱼幼虫至关重要,但增加了生产成本.
- 完整的饮食在水产养殖中提供了一个潜在的经济有效的替代方案.
- 优化饮食中的水分含量是幼鱼生长和新陈代谢的关键.
研究的目的:
- 评估具有不同水分水平 (47%,35%,24%,8%) 的完整饮食,作为鱼 (Pseudoplatystoma sp.) 活食物的替代品. 幼虫养殖 幼虫养殖.
- 评估这些饮食对虫幼虫生长,消化酶活性和肝脏代谢的影响.
- 为了确定最优的水分含量,以节省成本的水产养殖.
主要方法:
- 3200个虫幼虫被养了阿尔特米亚5天,然后过渡到实验性饮食,其中水分为47%,35%,24%或8%.
- 在一个完全随机的设计中进行了为期21天的养试验,每个水族馆有200只幼虫 (共16个水族馆).
- 分析了生长参数,消化酶活动 (氨酶,脂酶,蛋白酶,酸酶),肝酶 (ALT,AST),白蛋白和肝脏组织病理学.
主要成果:
- 含有24%和8%水分的饮食显著增加体重增加,最终长度和蛋白质效率率 (p < 0.05).
- 具体生长率和条件因子在治疗之间没有显著差异 (p > 0.05).
- 47%的水分饮食对肝脏代谢产生了负面影响,导致了他的病理变化,而8-24%的水分饮食是最有益的.
结论:
- 具有8-24%水分含量的完整饮食是虫幼虫养殖活食的有效和经济高效替代品.
- 饮食中的水分含量显著影响虫幼虫生长,消化酶活性和肝脏健康.
- 优化食配方,特别是水分水平,对于新热带鱼类的可持续和有利可图的水产养殖至关重要.
更多相关视频
09:31Author Spotlight: Advancing Coral Research by Exploring Climate Change Resistance, Ex Situ Aquaculture, and Reproduction Strategies
Published on: June 23, 2023
1.3K
05:15Inducing the Entry of Third Stage Dispersal Juveniles of Bursaphelenchus xylophilus into Cryptobiosis Through Osmotic Regulation
Published on: December 27, 2024
336
相关概念视频
00:59Tonicity in Animals
The tonicity of a solution determines if a cell gains or loses water in that solution. The tonicity depends on the permeability of the cell membrane for different solutes and the concentration of nonpenetrating solutes in the solution within and outside of the cell. If a semipermeable membrane hinders the passage of some solutes but allows water to follow its concentration gradient, water moves from the side with low osmolarity (i.e., less solute) to the side with higher osmolarity (i.e.,...
01:16Tonicity in Animals
Tonicity describes the amount of solute in a solution. The measure of the tonicity of a solution, or the total amount of solutes dissolved in a specific amount of solution, is called its osmolarity. Three terms—hypotonic, isotonic, and hypertonic—are used to relate the osmolarity of a cell to the osmolarity of the extracellular fluid that contains the cells. In a hypotonic solution, such as tap water, the extracellular fluid has a lower concentration of solutes than the fluid inside the cell,...
01:29Intestinal Phase of Digestion
The intestinal phase of digestion is the third and final stage of the digestive process, occurring after the cephalic and gastric phases. It begins when chyme, a partially digested mixture of food and digestive enzymes, enters the small intestine from the stomach. This phase is crucial for nutrient absorption and involves complex hormonal and enzymatic interactions.
The arrival of the chyme in the small intestine distends the duodenum, which triggers the enterogastric reflex. This distension...
The arrival of the chyme in the small intestine distends the duodenum, which triggers the enterogastric reflex. This distension...
01:25Regulation of Water Intake
Osmolality refers to the number of solute particles per kilogram of solvent in a solution. Plasma osmolality specifically indicates the total number of solute particles per kilogram of water in blood plasma. This value reflects the body's hydration status and is tightly regulated through mechanisms controlling water intake and output. While water consumption is a conscious decision, the body has intrinsic regulatory systems to maintain fluid balance. Dehydration, a state of water deficit...
01:22Physiology of the Gastrointestinal System II: Digestion and Absorption
The gastrointestinal (GI) tract, extending from the mouth to the anus, plays a pivotal role in the digestion and absorption of nutrients. This process involves both mechanical and chemical actions facilitated by various enzymes.
Digestion begins in the mouth, where food undergoes mechanical breakdown by chewing and combines with saliva. Salivary amylase, an enzyme in saliva, starts the breakdown of starches into maltose. The food then travels down the esophagus to the stomach.
In the stomach, a...
Digestion begins in the mouth, where food undergoes mechanical breakdown by chewing and combines with saliva. Salivary amylase, an enzyme in saliva, starts the breakdown of starches into maltose. The food then travels down the esophagus to the stomach.
In the stomach, a...
01:10Moisture Content and Bulking of Aggregate
The moisture content of aggregates is a crucial factor in construction, particularly in concrete mixing, as it influences the total water required in the mix. Moisture content represents the water coated on the exterior surface of the aggregate existing in a saturated and surface-dry condition. The total water content of a moist aggregate is the sum of its moisture content and water absorption.
When aggregates are exposed to rain or sit in stockpiles, they absorb moisture, which must be...
When aggregates are exposed to rain or sit in stockpiles, they absorb moisture, which must be...