缓释型贝类复合饲料的制备及其营养成分分析

doi:10.16378/j.cnki.1003-1111.20259

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Abstract In recent years, natural microalgae shortage occurs frequently in the shellfish culture area for the expansion of shellfish culture scale. To solve the problem of insufficient supply of natural microalgae using artificial feeding in an emergency, slow-release shellfish compound feed was prepared using crushing method. The preparation conditions of slow-release shellfish compound feed were optimized by L9(3⁴) orthogonal test, and the slow-release property and nutrient composition were analyzed. The results showed that the optimal preparation was observed under conditions of the weight ratio of compound algal powder, sodium alginate and 2% calcium chloride solution =25∶5∶1.25, and the press strength of 87.5 kg/cm². The average daily release of the feed prepared under the optimal conditions in 60 mesh bags was 1.93 g/d(dry weight), which could meet the requirement of artificial feeding at the flow rate of 17 cm/s. The slow-release shellfish compound feed was rich in 10 kinds of essential amino acids for aquatic animals, and the essential amino acid content accounted for 42.65% of the total amino acid content. The slow-release shellfish compound feed contained 6 kinds of unsaturated fatty acids, and the proportion of polyunsaturated fatty acids in crude lipid was 29.92%. According to the results of slow-release property and nutrient composition analysis, the slow-release compound feed is suitable for the artificial feeding of filter-feeding shellfish in natural sea area.

Key words： slow-release shellfish compound feed nutrient composition

Received: 23 November 2020

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	Articles by authors
	DAI Wei
	TANG Huang
	LU Zhengyi
	DONG Shaojie
	SONG Lun
	BI Xiangdong

Cite this article:

DAI Wei,TANG Huang,LU Zhengyi, et al. Preparation and Nutrient Composition of Slow-Release Shellfish Compound Feed[J]. Fisheries Science, 2022, 41(6): 992-998.

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https://www.shchkx.com/EN/10.16378/j.cnki.1003-1111.20259 OR https://www.shchkx.com/EN/Y2022/V41/I6/992

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