饲料中添加益生元添加剂对1龄以上鲤(Cyprinus carpio (Linnaeus, 1758))生产效率的影响

O. Dobryanska, O. Deren, M. Korilyak, A. Tuchapska
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引用次数: 0

摘要

目的。这项工作的目的是在考虑到生产和经济指标的情况下,评估在鲤鱼商业养殖过程中使用“Actigen”益生元的有效性和可行性。方法。该研究于2019年进行,使用了三个池塘,其中两个是实验池塘,一个是对照池塘,放养了平均体重为55 - 56克的1岁鳞片鲤鱼,放养密度为1000只/公顷。试验组在生长季90 d内分别饲喂添加0.025%(试验1)和0.05%(试验2)益生元“Actigen”的饲料。研究期间通过控制氧、温度、水生环境的水化学和水生物状况以及根据水产养殖中普遍接受的方法在生长季节结束时的养殖效率分析。在生长季节结束时测定1岁以上鲤鱼养殖的渔业和经济指标。发现。实验池和对照池的鲤鱼生长条件令人满意。实验池塘的水化学状况与饲料组成没有关系。生长季浮游动物和底栖动物食物生物的季节平均生物量分别为10.81 ~ 20.64 g/m3和0.47 ~ 0.73 g/m2,是鲤鱼的额外食物来源。结果表明,饲粮中添加0.025%和0.05%益生元的1+龄鲤鱼平均体重分别提高11.9%和22.2%,鱼产量分别提高12.1%和23.1%。饲料转化率较对照组分别降低9.5%和19.1%。在添加0.025%益生元的饲料中,鱼获得的额外鱼产品成本分别为4290 UAH/ha、0.05% ~ 8190 UAH/ha。包括添加0.025%和0.05%益生元的饲料和鱼籽成本在内的或有收入分别比对照组高20.9%和33.6%。创意。本文首次研究了益生元“Actigen”对1+龄鲤鱼生长过程中生产力和经济指标的影响。这项任务的实施为用改良成分的人工饲料喂养鱼类提供了提高池塘鱼类生产力的机会。实用价值。所得结果证明了在养鱼中使用益生元“Actigen”的方便性和有效性。通过改善饲料的质量特性,可以降低鱼产品养殖的成本并获得额外收益。关键词:鲤鱼,益生元,“活性原”,水化学和水生物参数,鱼类生产力,饲料系数,效率,利润
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Productivity and efficiency of growing age-1+ carp (Cyprinus carpio (Linnaeus, 1758)) with the use of a prebiotic additive in the feed composition
Purpose. The aim of the work was to assess the effectiveness and feasibility of using the prebiotic "Actigen" in the process of commercial cultivation of carp taking into account productive and economic indicators. Methodology. The study was conducted in 2019, using three ponds, two of which were experimental and one control, which were stocked with age-1 scaly carp with an average weight of 55 - 56 g at a stocking density of 1000 specimens/ha. Carp of the experimental groups were fed during 90 days of the growing season with a feed with supplemented with the prebiotic "Actigen" at the amount of 0.025% (Experiment 1) and 0.05% (Experiment 2). Optimal conditions for carp keeping were provided during the study with the control of oxygen, temperature, hydro-chemical and hydro-biological regimes of the aquatic environment and analysis of the efficiency of cultivation at the end of the growing season according to generally accepted methods in aquaculture. Piscicultural and economic indicators of age-1+ carp cultivation were determined at the end of the growing season. Findings. Conditions for growing carp in experimental and control ponds were satisfactory. No dependence of the hydro-chemical regime of experimental ponds on the composition of the diet was found. The average seasonal biomass of food organisms of zooplankton and zoobenthos during the growing season was 10.81 – 20.64 g/m3 and 0.47 – 0.73 g/m2, respectively, and served as an additional source of food for carp. It was found that the average weight of age-1+ carp, which was fed with the feed with the addition of 0.025% and 0.05% of prebiotic supplements, was higher by 11.9% and 22.2%, respectively, fish productivity – by 12.1% and 23.1%. The feed conversion rate was lower by 9.5% and 19.1% relative to the control. The cost of additionally obtained fish products when fish were fed with a feed supplemented with the prebiotic at the amount of 0.025% was 4290 UAH/ha, 0.05% - 8190 UAH/ ha. The contingent income, including costs for feeds and fish seeds using 0.025% and 0.05% prebiotic, was 20.9% and 33.6% higher, respectively, than in the control group. Originality. The effect of prebiotic "Actigen" on productivity and economic indicators in the process of growing age-1+ carp was studied for the first time. The implementation of this task provided an opportunity to increase the fish productivity of ponds by feeding fish with an artificial feed of improved composition. Practical value. The obtained results testify to the expediency and efficiency of using prebiotic "Actigen" in fish farming. Reducing the cost and obtaining additional gains in the cultivation of fish products is provided by improving the quality characteristics of feed. Key words: carp, prebiotic, "Actigen", hydro-chemical and hydro-biological parameters, fish productivity, feed conversion factor, efficiency, profit.
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