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1.
诱食剂(Feeding Promoting Agent)又称引诱剂、食欲增进剂,是一种具有使鱼虾趋向饲料周围的化学物质,具有改善饲料适口性、增强动物食欲、提高动物采食量、促进饲料消化吸收与利用的作用,而添加于饲料中的特殊添加物。因此,诱食剂在水产养殖生产中的应用日趋广泛。  相似文献   

2.
水产诱食剂溴化DMPT对慈鲷的诱食及促生长作用   总被引:2,自引:0,他引:2  
初步探讨了将以化学合成方法得到的溴化DMPT晶体添加到配合饲料中对慈鲷科热带鱼非洲王子(Labibochromis caeruleus)的诱食作用及生长的影响.10周的喂养试验表明,饲料中添加0.1 g/kg溴化DMPT,对慈鲷有良好的诱食作用;添加0.2 g/kg可使慈鲷幼鱼的增重率达到对照组的1.8倍,饵料系数下降26.4%,同时有助于改善鱼的体质,缓和应激.  相似文献   

3.
水产动物诱食剂研究不断升温,就诱食剂作用的生理机制进行了分析,概述了目前使用的诱食剂及其诱食效果,简述了诱食剂在渔业生产上的作用。  相似文献   

4.
综述了诱食剂及作用机理,诱食剂的种类、主要包括甜菜碱、动植物提取液、含S有机物、氨基酸、脂肪和糖类等,主要作用即促进摄食、营养和抗病、改进饵料品位,诱捕剂、提供新饵料源、和源食剂的应用前景。  相似文献   

5.
诱食剂在水产饲料中的应用   总被引:2,自引:0,他引:2  
近年来,随着水产养殖业的迅速发展和鱼、虾、蟹等各类水产动物人工养殖规模化和集约化生产的形成,水产饲料诱食剂在饲料工业和水产养殖业中的应用及研究得到了长足的发展.自上世纪70年代以来,国外许多学者(特别是日本)纷纷开展了对鱼用饲料诱食成分的研究,鱼类的索饵、摄饵行为与化学刺激的关系日益明了.在鱼用饲料诱食成分的分离、分析、诱食活性成分定量分析、诱食成分人工模拟等方面取得了很大的进展.诱食剂已投入工业化生产,在养殖业中广泛应用,并已取得了明显的经济效益.我国在这一领域的研究偏少,近10年来才开始投入力量,而且主要以复配、仿制和摸索为主,自主研制和创新较少.因此,研究和发展水产饲料诱食剂的应用技术和开发产品对推动水产饲料工业与水产养殖业的发展和最大程度地提高养殖业水平有着十分重要的现实意义.  相似文献   

6.
诱食剂在水产饲料中的应用   总被引:1,自引:0,他引:1  
李振 《水产科技情报》2005,32(4):162-164
在水产饲料中添加适量的诱食剂可改善饲料的适口性,增进水产动物的食欲,提高饲料的消化吸收率,降低饲料系数,促进水产动物生长,并减轻水质的污染。本文论述了水产动物诱食剂的作用、种类及其在水产饲料中的应用效果。  相似文献   

7.
一种贝类作为水产动物诱食剂的研究   总被引:7,自引:0,他引:7  
一种贝类(ASL)不仅蛋白质含量高,氨基酸组成也比较全面,高不饱和脂肪酸含量丰富,甜菜碱含量高达289mg/g。向饲料中添加1%的ASL粉,发现其对金鱼的诱食活性不仅显著高于空白对照组,而且显著高于化十香组;饲料中添加03%的ASL粉,异育银鲫摄食量显著高于对照组,六周增重率比对照组提高33%,这些结果表明ASL作为水产动物诱食剂具有很高的开发利用价值。  相似文献   

8.
1引言 水产诱食剂就是能将鱼类吸引至饵料周围和引起鱼类食欲并促进其完成吞食饵料过程的物质。这种物质包括鱼类摄饵引诱物质和摄饵刺激物质。诱食剂在改善饲料的诱食性、适口性和饲料转化率等方面都起到重要的作用,一方面诱食剂可以通过特殊气味掩盖饲料中的不良气味,刺激鱼虾的感觉器官,以达到促进鱼虾摄食、加快鱼虾生长的目的;另一方面,通过诱食剂诱导鱼虾摄食,缩短了摄食时间,可以减少水体中的残饵和饲料的溶失,在提高饲料利用率的同时,也减少了饲料对水体的污染。  相似文献   

9.
综述了甜菜碱、氨基酸、动植物提取物3类诱食剂在水产养殖中的应用效果和实验情况。不同诱食剂对不同养殖对象引诱效果不同,同一种诱食剂对不同养殖对象的引诱效果也不同,使用混合诱食剂的一般可增强诱食效果。选择诱食剂的原则是有效、经济、安全、方便。  相似文献   

10.
诱食剂及其在水产养殖中的应用研究进展   总被引:4,自引:0,他引:4  
本文从诱食剂的定义入手,论述了其诱食的机理、研究方法、功能特点、种类及应用,同时对诱食剂研究方向也作了一定的介绍.  相似文献   

11.
    
The present study was performed to determine whether the palatability, consumption and digestibility of an artificial sea urchin diet could be improved by the addition of a highly preferred seaweed. Four species of macroalgae (Ulva rigida, Ecklonia maxima, Porphyra capensis and Gigartina polycarpa) were assessed by pairwise preference tests. Each macroalgal species was consumed at least once by Tripneustes gratilla and significant preferences always involved Ulva as the most preferred species. Four protein‐rich artificial diets supplemented with varying amounts of Ulva [0, 50, 150 and 200 g kg?1 designated 0, 5, 15 and 20U, respectively] were then developed and fed to urchins over a 20‐day period. Inclusion of 200 g kg?1 dried Ulva significantly improved the palatability of the artificial diet and mean dry feed consumption rates were higher in urchins fed the 20U and 15U diets compared with urchins fed diets with a lower Ulva content. Daily digestible protein (DP) intake also differed significantly, with urchins fed the 20U diet having a significantly higher DP intake compared with the 15U, 5U and 0U treatments. These results indicate that inclusion of the palatable seaweed Ulva acted as a feeding stimulant, increasing the acceptability of the diets and boosting protein intake.  相似文献   

12.
A feeding experiment was conducted to determine the effect of the feeding attractant, glycine betaine (betaine hydrochloride) on the growth and feed conversion of juveniles of Macrobrachium rosenbergii (deMan) (mean initial weight 1.12 g). Three types of diets were prepared with the incorporation of glycine betaine at 5, 10 and 15 g kg?1 levels along with an unsupplemented control. After 60 days, weight gain, feed intake and food conversion ratio (FCR) were higher in prawn fed the three glycine betaine‐added diets compared with the control feed. Among the glycine betaine‐added diets, prawn fed glycine betaine at 5 g kg?1 level showed highest weight gain (2.73 g) by registering 61.5% increase in growth over control and also higher feed intake (5.79 g) and good FCR (2.12). There were highly significant differences (P < 0.01) in weight gain, feed intake, per day growth and FCR among treatments. There was no significant difference (P > 0.05) in survival among treatments.  相似文献   

13.
    
Soybean meal (SBM) inclusion in salmonid diets can lower feed cost, but dramatically reduces growth and feed utilization, and increases mortality in juvenile chinook salmon Oncorhynchus tshawytscha, due to diminished diet palatability and/or other adverse physiological effects exerted by antinutritional factors in SBM. The objective of this study was to investigate whether commercial Antarctic krill meal Euphausia superba or hydrolysates enzymatically produced from Pacific hake Merluccius productus could reverse the negative palatability effects of SBM inclusion in juvenile chinook salmon diets. Diets without SBM or with SBM and no added feed attractant were used as positive and negative control diets respectively. Incorporation of 2% krill meal or Alcalase®‐produced hydrolysates into SBM‐containing diets (20% of dry matter by isonitrogenous replacement of fishmeal) significantly (P < 0.05) increased feed intake, feed utilization, fish weight gain and thermal growth coefficient during a 5‐week trial. Nevertheless, the negative effects on fish performance incurred by dietary inclusion of 20% SBM could not be fully reversed, indicating that most of those effects were likely unrelated to palatability. This study demonstrates the potential for using Pacific hake hydrolysates as a dietary feed attractant for salmonid diets, and supports the need for further research to optimize its application for ideal fish performance.  相似文献   

14.
不同中草药对两种淡水鱼类诱食作用的研究   总被引:5,自引:1,他引:5  
根据中草药药理设计制成六种复合试剂 ,以鲫鱼 (Carassiusauratus)、史氏鲟 (Acipenserschrencki)为对象进行诱食活性试验 ,用one -wayANOVA检验统计分析。结果表明 6种中草药复合试剂对两种鱼类的诱食效果并不完全相同 ,复合试剂对鲫鱼都有极显著的诱食效果 ,仅有两种复合试剂对史氏鲟有显著的诱食作用。为鱼用中草药诱食促长剂的进一步开发研究提供了资料  相似文献   

15.
    
Studies were conducted with juvenile (28 g) Atlantic cod (Gadus morhua) and halibut (Hippoglossus hippoglossus) fed fish meal (FM) based diets with partial (0%, 25%, 50% and 75%) or total (100%) replacement of FM with freeze‐dried krill (FDK). Addition of dietary FDK significantly stimulated feeding activity in both species and resulted in higher feed consumption and intakes of digestible protein (DP) and energy (DE). This is a significant finding on the feed attractant properties of FDK because it occurred despite having 2–4 MJ kg?1 higher levels of DE in the FDK diets which could have had an intake suppression effect. In addition, it indicates that the soluble protein fraction of krill thought to be responsible for its attractant properties and is routinely lost or greatly reduced during commercial processing of krill meals, is retained by freeze‐drying. Supplementation of FDK significantly improved growth rates, digestibility and nutrient utilization. Levels exceeding 25–50% FM replacement, however, generally did not significantly increase growth performance or nutrient utilization. In addition, feed formulations with high FDK (>75% replacement) are likely to be cost‐prohibitive as long as the market price remains higher than FM.  相似文献   

16.
复合诱食剂对牙鲆摄食生长的影响   总被引:11,自引:0,他引:11  
以初始体质量为(3.01±0.04)g的牙鲆(Paralichthys olivaceus)为实验对象,进行为期70 d的摄食生长实验。共配制5种等氮等能饲料,其中以鱼粉和豆粕为蛋白源(豆粕蛋白替代45%的鱼粉蛋白)配制出基础饲料,分别在基础饲料中添加0.0%、0.5%、1.0%和1.5%的复合诱食剂配制成4种豆粕取代饲料,同时以全鱼粉饲料为对照饲料,研究复合诱食剂对牙鲆摄食生长的影响。结果表明,当豆粕取代饲料中诱食剂添加量为1.0%时,牙鲆的摄食率(P<0.05)、饲料效率(P<0.05)、鱼体脂肪含量(P<0.01)以及肝脏、肠胰蛋白酶活力和肠氨肽酶活力(P<0.01)显著高于不添加诱食剂组;当豆粕取代饲料中诱食剂的添加量为0.0%和0.5%时,牙鲆的特定生长率显著低于全鱼粉组(P<0.05);而当添加量为1.0%和1.5%时,牙鲆的特定生长率与全鱼粉组比较没有出现显著差异(P>0.05)。结论认为,当以豆粕蛋白替代45%的鱼粉蛋白时,添加1.0%的复合诱食剂能够显著提高牙鲆幼鱼对饲料的摄食率和生长率。  相似文献   

17.
九种诱食物质对黄金鲫的诱食效果研究   总被引:1,自引:0,他引:1  
选用鱼腥素、排草、大茴香、苏叶、植物肽、木香、复合氨基酸、动物肽、公丁9种诱食物质,通过摄食行为学法确定其对黄金鲫(Carassius auratus)诱食效果。结果显示:9种诱食物质明显的最适浓度分别为0.25%、0.05%、0.05%、0.75%、1.25%、0.05%、0.35%、0.20%、0.15%。摄食量法试验显示:饲料中添加0.05%大茴香、1.25%植物肽、0.35%的复合氨基酸和0.05%的木香4组对黄金鲫诱食效果较好,而添加0.35%的复合氨基酸和0.05%的木香对黄金鲫诱食效果最好,经过SPSS软件分析,0.35%的复合氨基酸组和0.05%的木香组增重率、特定生长率和饲料效率都均显著高于其他各组(P>0.05)。  相似文献   

18.
8种中草药对苏氏芒鲶的诱食活性   总被引:2,自引:0,他引:2  
选用8种中草药(陈皮、桂皮、薄荷、山楂、黄柏、白芷、小茴香、肉蔻)作为诱食剂,采用行为学的方法,记录实验鱼进入有效区的次数,分析不同中草药对苏氏芒鲶的诱食作用。结果表明,薄荷、山楂、小茴香对芒鲶均有显著的引诱作用(P<0.05);陈皮、肉蔻对芒鲶的引诱作用不显著(P>0.05);桂皮、白芷、黄柏对芒鲶有抑制作用(P>0.05)。为苏氏芒鲶的高效全价配合饲料的研制提供了实验依据。  相似文献   

19.
    
Tilapia is the second most farmed fish group worldwide and over the past decade has quadrupled in production, largely due to their many characteristics conducive to aquaculture conditions as well as to the high marketability and relatively stable market prices. To keep pace with this rapid expansion, tilapia aquaculture will rely increasingly on more sustainable practices, but this must not be at the expense of decreased productivity, increased cost or compromised product quality. Since feed constitutes the major operating cost of tilapia farming, understanding their nutritional requirements, factors that may influence these requirements and implementing the most appropriate feeding management strategy is essential for the continued sustainability and scalability of the global tilapia industry. This review addressed these concerns by providing an overview of published nutrient requirement data and offered practical recommendations to the nutrition and feeding management of farmed tilapia, from broodstock to finishing feeds. The first section of this review extensively discusses the dietary protein/amino acids, lipids/fatty acids, carbohydrates, vitamin and mineral requirements of tilapia. Alternatives to marine‐based ingredients, which are used increasingly in tilapia feeds, are also discussed. This is followed by discussing practical feed management aspects at the commercial farm level including feed formulations, feed types and feeding rates/frequency throughout the culture cycle. Recent research indicating significant differences in nutrient requirements and utilization efficiencies of improved tilapia strains versus non‐improved strains are highlighted. This review aims to provide a comprehensive overview of tilapia nutrition and thus contributes to the continued global expansion of tilapia farming and the demand for their products.  相似文献   

20.
Feed conversion efficiency (FCE) is a composite measure that combines feed intake with growth rate to estimate the effectiveness by which feed is converted to saleable meat product, and is a major determinant of production system efficiency. We measured the relationships between feed intake to apparent satiety and weight gain in replicate half‐sib families of black bream at four times over a 56‐day test period. After 42 days, we found significant additive genetic variance in both weight gain and feed intake, and a stabilization in family group variation in both traits. This indicates that 42 days is the minimum test period over which to measure genetic variation for FCE in black bream. There were high, positive phenotypic (and probably genetic) correlations between weight gain and feed intake after 42 days. We found no detectable genetic variation for either feed efficiency (weight gain/feed intake), or residual feed intake, which is a linear function that distinguishes between the amount of feed intake that is used for body maintenance and that used for growth. We argue that selection for improved FCE might be better achieved not by using a composite measure, but by using a weighted selection index that accounts for the genetic covariance among weight gain, feed intake and other key production traits.  相似文献   

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