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1.
采用Ｌ９（３＾４）正交设计法,配制九种不同能量、蛋白质、有效磷水平的配合饲料喂养彭泽鲫春片鱼种,测定鱼体的增重、试验结果为：第１－９组的日增重分别为２．４９、２．２８、１．８３、２．１４、２．１９、１．８７、３．１１、３．１０和２．６７ｇ,日增重率分别为０．７６％、０．７０％￣０．５６％、０．６７％、０．６５％、０．５６％、０．９１％、０．９１％和０．８６％,相地增重率分别为３３．６３％、３０．７ 相似文献
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彭泽鲫鱼种配合饲料的初步研究 总被引：10，自引：2，他引：8
用正交设计方法，设计了９种不同配方的饲料，用来喂养彭泽鲫春花鱼种。结果表明，彭泽鲫鱼种配合饲料中能量的适宜量为１２１ＭＪ／ｋｇ，蛋白质的适宜含量为３０％，磷的适宜添加量为０７％。 相似文献
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甲鱼对蛋白质、脂肪、糖及钙磷的适宜需求量 总被引：4，自引：0，他引：4
以鱼粉、小麦粉和豆饼制成基础饲料，分别添加酪蛋白、豆油、α－淀粉调节各组饵料中的蛋白质、脂肪和糖类的含量，以磷酸盐和碳酸钙调节钙磷比及钙磷总量，研究饲料中的蛋白质、脂肪、糖类和钙磷对于甲鱼生长的影响。试验分两部分进行，试验Ⅰ以正交表Ｌ９（３４）设计，研究蛋白质、脂肪、糖类和钙磷比四因素三水平对于成甲鱼的增重率和成活率的影响，并初步探讨了甲鱼对这四种因素的适宜需求量。试验Ⅱ是在正交试验的基础上，采用单因素梯度法，进一步研究了蛋白质、脂肪及钙磷在饲料中的适宜含量。试验结果表明，体重为１０１．８８±３．４６ｇ的甲鱼对蛋白质的适宜需求量为４７．５０％，脂肪为８．０５％，糖类为１８．２４％，钙磷比为１．５１：１，幼甲鱼（体重为１８．１９±０．６７ｇ）对钙磷总量的适宜需求量为４．２３％（其中钙为２．５４％，磷为１．６９％）。饲料中各种营养素对于甲鱼的影响效果是不同的，对于成甲鱼的增重，脂肪为主要因素，其次为蛋白质。但二者相差不大，再次为糖类，钙磷比的影响最小；对于成活率，影响最大的是脂肪，其次为蛋白质和钙磷比，糖类的影响最小。设计配方时要优先考虑脂肪和蛋白质。另外，研究钙磷需求时发现，钙磷含量高于适宜含量，成活率显 相似文献
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在面积０．６７ｈｍ＾２，水深１．５ｍ的池塘中投放体长为３ｃｍ的斑点叉尾Ｈｕｉ鱼苗９万尾，用干红虫饲养１８８ｄ，共产大规格斑点叉尾Ｈｕｉ鱼种１ １７４ｋｇ，平均规格６２尾／ｋｇ，养殖成活率８７．５％，每６６７ｍ＾２获利３ ７８０元，投入产出比为１：１．８７。 相似文献
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笔者在钟祥市水科所一口精养塘进行了混合养殖生产试验，在精养塘养殖淡水白鲳同时混养花白鲢、鲫鱼、草鱼、鲤鱼鱼种。现将养殖试验情况总结如下：一、条件和方法１．池塘条件水面１０．８亩，水深１．５～２米，淤泥０．５～０．７米。交通方便、电力充足，排灌方便，水质良好，透明度３０～５０厘米，pH值６．８～８．２，水温２５～２８℃。生产配备有２．２千瓦叶轮式增氧机、潜水泵和投饵机各１台。２．鱼种放养淡水白鲳春片、彭泽鲫鱼种采用塑料袋充氧汽车运输，５月上旬投放，此时水温稳定在２０℃。花白鲢、草鱼、鲤鱼种在５月下… 相似文献
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成鳖配合饲料主要营养物质可消化性研究 总被引：1，自引：1，他引：0
运用消化生理方法，测定成鳖配合饲料主要营养物质蛋白质、脂肪、碳水化合物的消化率。结果表明，所研制的成鳖配合饲料中蛋白质、脂肪、碳水化合物的消化率分别为８４６５％—９１８７％、８１５０％—８６１５％、６７０５％—７０７７％。 相似文献
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放养量４．５－６ｋｇ／ｍ＾３，饲养期约１００天，单产２７．０－３２．６ｋｇ／ｍ＾３，饵料系数１．３－１．７５，成本利润率５６．９％－７５．２％，能量转换率１７．９％－２３．９％。试验表明在我国北方网箱养非鱼能取得较高的经济效益。 相似文献
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在水库中连续３年设置网箱养殖罗非鱼，按４．５￣６ｋｇ／ｍ＾３放养量投放鱼种（平均规格６３￣９５ｇ／尾），饲养１００天左右，平均规格达到３７４￣４３８．８ｇ尾产量达２７．０￣３２．６ｋｇ／ｍ＾２，饲料系数１．３￣１．７５，利润率达５６．９％￣７５．２％，网箱养鱼能量转移率１７．９％￣２３．９６％。 相似文献
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１９９９年５月～２０００年４月,对垸内胜利湖和垸外新河的８只网箱养殖加州鲈效果进行了比较。结果表明,外河４只网箱养殖加州鲈平均净单产２８．９～３０．５ｋｇ／ｍ＾２,成活率８６．０％～９１．２％,增重倍数１４．５～１９．０,依次比内湖４只网箱的净产量（２２．４～２４．７ｋｇ／ｍ＾２）、成活率（８１．０％～８５．６％）、增重倍数（１２．０～１５．２ｋｇ／ｍ＾２）分别高４．７～６．１ｋｍ／ｍ＾２、４．０％～５．６％、２．４～３．８ｋｇ／ｍ＾２;此外,相同水域不同放养密度的产量、成活率、增重倍数也有明显差别。 相似文献
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螺旋藻对彭泽鲫生长性能的影响 总被引：3，自引：0，他引：3
通过向彭泽鲫(Pengze Crucian Carp)的基础日粮中添加螺旋藻,以研究其促生长效能。结果表明:2％、4％ 这两种添加剂量均能显著提高彭泽鲫的生长性能(P<0.01),试验组和对照组的相对增重率分别为125.42％、137.66％和 103.43％,饲料系数比对照组分别提高了9.82％和15.18％,成活率也有不同程度的提高。 相似文献
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Ruihe Yu Hongzhong Cao Yaying Huang Mo Peng Kimia Kajbaf Vikas Kumar Zhiying Tao Gang Yang Chungen Wen 《Aquaculture Research》2020,51(2):636-647
Goal of this research is to explore the effects of graded dietary levels of hydrolysed feather meal (HFM) protein as an alternative of fishmeal protein on Pengze crucian carp (Carassius auratus var. Pengze). Five isonitrogenous (35% crude protein) diets were formulated as Control diet and four other diets F15, F30, F45 and F60 wherein 15%, 30%, 45% and 60% fishmeal protein replaced by HFM protein fed for 70 days. The results showed that fish growth was unaffected up to 45% fishmeal protein replacement. Dietary HFM protein could reduce the crude protein composition of body and further affect fillet quality through a significant increase in springiness, gumminess, chewiness and/or resilience. Activity of digestive enzymes (amylase, lipase and tryptase) increased as the fishmeal protein replacement increased, whereas a higher replacement level had negative impacts on absorptive capacity of intestine by decreasing its absorptive area, following by a reduction in concentration of lactate dehydrogenase, total cholesterol, high‐density lipoprotein, low‐density lipoprotein and ammonia in serum. Although intestinal antioxidant parameters were elevated by dietary HFM protein , the content of malondialdehyde in intestine was also positively associated with the protein replacement level. Overall, our results indicate that up to 45% of fishmeal protein could be replaced by HFM protein in diet without significant impact on the growth of Pengze crucian carp, whereas the crude protein content of whole body, fillet quality and oxidative status would significantly be affected when the replacement level of fishmeal protein reaches 30% together with a negative effect on the intestinal histology. 相似文献
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A 11‐week growth trial was conducted in a flow‐through system with juvenile gibel carp Carassius auratus gibelio to evaluate the effects of gradual replacement of fish meal (FM) by meat and bone meal (MBM) on growth performance, phosphorus (P) and nitrogen (N) loading. Six isonitrogenous (crude protein: 410 g kg?1) and isoenergetic (gross energy: 18 kJ g?1) diets were formulated. FM was used as the control protein. In the other five diets, 20, 40, 60, 80 and 100% FM protein was substituted with MBM20, MBM40, MBM60, MBM80, MBM100, respectively. Total P content in the diets ranged from 16.0 to 28.3 g kg?1 and the available P was 5.0–6.6 g kg?1. The results showed that the best growth was achieved with fish fed on the control diet and MBM20. Final body weight, weight gain, feed efficiency, protein retention efficiency and energy retention efficiency decreased with increased dietary MBM. No significant differences were found in the feeding rate and hepatosomatic index between the groups. Apparent digestibility coefficient (ADC) of dry matter, protein and P decreased with increase in dietary MBM, while there were no significant differences in the ADC of energy. P and N retention decreased linearly while P and N loading increased linearly with the increased dietary MBM levels. No significant differences were observed in the activity of alkaline phosphatase, aspartate aminotransferase and alanine aminotransferase, as well as pyruvate kinase in liver or in serum. Total superoxide dismutase activity in MBM20 was significantly higher than that of MBM100. 相似文献
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Effects of varying dietary protein and energy supply on growth, body composition and protein utilization in gilthead seabream (Sparus aurata L.) 总被引：4，自引：1，他引：4
Diets formulated with increasing digestible energy (10–22 DE MJ kg−1 ) contents and decreasing digestible crude protein (DCP)/DE ratios (34–15 g MJ−1 ) were fed to triplicate groups of Sparus aurata in three consecutive trials. Fish were hand-fed to apparent satiation and voluntary feed intake was found to be dependent upon dietary DE content. Daily growth was regulated both by energy and protein intake and reached its maximum at high energy levels. Growth composition showed narrow limits regarding protein gain (157–190 g kg−1 ) and a wider range regarding lipid (55–210 g kg−1 ) deposition reflecting the dietary energy to protein supply. Energy utilization for growth was constant at a value of 0.50 regardless of energy intake. Efficiency of protein utilization for growth varied between 0.33 and 0.60 depending on the DCP/DE ratio in the diet. The optimal protein utilization for protein deposition was found to be at 0.47. These values allow daily energy and protein requirements for growing S. aurata to be quantified. This demonstrates that the optimal dietary DCP/DE supply changes with fish size, growth potential and daily feed intake. 相似文献
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The effects of increasing dietary concentrations of phosphorus on growth, feeding efficiency and body composition were studied in the tiger barb (Barbus tetrazona) (Bleeker, 1855). Juvenile tiger barbs (initial weight 0.33 ± 0.02 g) were fed purified diets containing graded levels of KH2PO4 to provide 0.17–1.57% available dietary phosphorus for 8 weeks in freshwater glass aquaria. The weight gain, feeding efficiency and mineral composition of the whole body and bone were significantly (p<0.05) affected by dietary phosphorus. Growth response data calculated by broken line analysis showed that the minimum dietary phosphorus level required for maximum growth was 0.52%. The carcass protein, fat and ash contents but not moisture were affected by various dietary phosphorus levels. Fish fed a low-phosphorus diet had high body crude fat. 相似文献
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Effect of dietary phosphorus levels on growth and body composition of crucian carp,Carassius auratus under indoor and outdoor experiments 
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下载免费PDF全文 Indoor and outdoor experiments were carried out simultaneously to evaluate the effects of dietary phosphorus levels on growth performance and body composition of crucian carp. Monocalcium was used to formulate extruded feed containing available phosphorus (AP) of 1.5 (D1), 4.7 (D2), 6.3 (D3) and 9.0 (D4) g kg?1. Twelve 500‐L recirculating tanks were assigned to four triplicate groups with each tank stocked with 15 juveniles (39.88 ± 0.14 g) for indoor experiment. Twelve polyethylene enclosures were assigned to four groups with each one stocked with 120 juveniles (44.08 ± 1.36 g). After 8 weeks of feeding, survival ranged from 96% to 100%. Weight gain, special growth rate, protein efficiency ratio and feed conversion rate did not show significant differences among dietary treatments in both experiments. Fish cultured in the enclosures grew better, although D1 and D2 treatments did not reach significant level. Crude protein and phosphorus content of the fish were not significantly affected by dietary phosphorus level. Moisture, crude lipid, crude ash and vertebrae phosphorus were significantly affected by different phosphorus levels. Based on vertebrae phosphorus, crucian carp cultured in the tanks and in the enclosures showed phosphorus deficiency under 4.7 g kg?1 and 6.3 g kg?1 AP, respectively. 相似文献
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Edwin H. Robinson L. Scott Jackson Meng H. Li 《Journal of the World Aquaculture Society》1996,27(3):303-308
Three experiments were conducted to evaluate the need for supplemental phosphorus in the diet of channel catfish Ictalurus punctatus as well as to compare dicalcium phosphate and defluorinated phosphate as sources of supplemental phosphorus. Fingerling channel catfish were stocked into 0.04-ha earthen ponds at a rate of 1,000 fish/pond (24,700ha). The fish were fed a feed typical of commercial catfish feeds containing 28% protein and 2.8 kcal digestible energy/g once daily to satiation during the growing season (April to October). Fish in experiment 2 were overwintered and fed at a rate of 1% body weight twice weekly when the water temperature exceeded 13 C. The basal diet used in experiments 1 and 2, which contained no supplemental phosphorus, had estimated available phosphorus concentrations of 0.26 and 0.20%, respectively. Dicalcium phosphate was added to provide available phosphorus concentrations of 0.34 and 0.41% for experiment 1, and 0.27 and 0.35% for experiment 2. Diets used in experiment 3 to compare dicalcium and defluorinated phosphates contained 0.40% available phosphorus. Data from experiments 1 and 2 indicated that a concentration of dietary phosphorus of about 0.27% was adequate for maximum weight gain and efficient conversion of feed by channel catfish. However, a concentration of about 0.35% available phosphorus was required for maximum bone mineralization in experiment 2. There were no differences in growth or bone mineralization between fish fed dicalcium or defluorinated phosphate. We conclude that the small increase in bone phosphorus (about 4%) is biologically insignificant, and suggest that 0.3% available phosphorus be adequate for channel catfish raised in earthen ponds. Also, either dicalcium or defluorinated phosphate can be used as a source of supplemental phosphorus in channel catfish diets. However, defluorinated phosphate may be desirable because of its low solubility in water. 相似文献
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A feeding trial was carried out where five protein concentrations [26%, 29%, 33%, 37%, and 41% crude protein (CP)] were fed to jundia fingerlings at two dietary energy concentrations [3200 and 3650 kcal metabolizable energy (ME)/kg diet] to establish the protein requirement for this species. Triplicate groups of 23 fish (average weight 1.52±0.34 g) were each stocked in 120-l aquaria and fed semipurified diets twice a day to apparent satiation. After 90 days, fish weight gain (WG), specific growth rate (SGR), feed efficiency (FE), protein efficiency ratio (PER), energy retention (ER), apparent net protein utilization (ANPU), feed consumption (% body weight) and body composition (crude protein, fat, and ash) were affected by diet composition. Weight gain, SGR, FE, ANPU and ER increased (P<0.05) as the dietary protein concentration increased up to 33% and 37%, for fish fed diets containing 3650 and 3200 kcal, respectively. A significant interaction between dietary protein and energy was observed for WG, SGR, and PER. Feed consumption was not affected by dietary energy concentration, but decreased with increasing dietary protein concentration (P<0.05). Body fat decreased as dietary protein increased at both energy concentrations, but was higher in fish fed the 3650 kcal diet. The opposite was observed for body protein, ER, and ANPU (P<0.05). Our findings demonstrate that jundia presents dietary protein sparing effect when the energy concentration increases from 3200 to 3650 kcal/kg. Jundia protein requirement, determined by the broken line method, is between 32.6% and 37.3% CP, depending on dietary energy concentration. 相似文献
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Dietary phosphorus requirement of fingerling Labeo rohita (6.1 ± 0.13 cm; 1.88 ± 0.05 g) was quantified by feeding seven isonitrogenous (350 g/kg crude protein) and isocaloric (16.72 kJ/g gross energy) purified diets with different levels of phosphorus as 3.5 (basal diet), 4.6, 5.7, 6.5, 7.8, 8.9, and 10.1 g/kg. Triplicate groups of fish were fed at 0800, 1200, and 1600 h to apparent satiation for 8 wk. Live weight gain (LWG; 494.68%), specific growth rate (3.18%/d), feed conversion ratio (1.54), feed efficiency (0.65), protein gain (PG; 1.26 g/fish), protein efficiency ratio (1.86), and phosphorus utilization efficiency (98.78%) improved significantly (P < 0.05), with increasing dietary phosphorus level up to 6.5 g/kg. However, phosphorus contents of vertebrae and scale increased significantly up to 7.8 g/kg. Dietary phosphorus levels significantly affected serum phosphorus concentration and alkaline phosphatase activity. Broken‐line analysis based on LWG; PG; and whole‐body, vertebrae, and scale phosphorus against dietary phosphorus indicated the optimal phosphorus requirement of fingerling L. rohita at 6.56, 6.58, 6.56, 8.02, and 8.44 g/kg diet, respectively. In order to restrict superfluous phosphorus in the diet, inclusion of 6.56 g/kg phosphorus is recommended for optimal growth of fingerling L. rohita. 相似文献