In vitro nutrient digestibility values of black soldier fly as a swine feed ingredient can be estimated by nitrogen concentrations

IF 4.7 3区农林科学 Q1 ENTOMOLOGY

Journal of Insects as Food and Feed Pub Date : 2023-09-20 DOI:10.1163/23524588-20230050

H. Kim, S.Y. Ji, B.G. Kim

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引用次数: 0

Abstract

The objectives were to determine effects of growth stages (experiment 1) of black soldier fly (BSF; Hermetia illucens) and processing methods (experiment 2) on in vitro nutrient digestibility of BSF for pigs and to develop prediction equations for estimating in vitro nutrient utilization in BSF. In experiment 1, in vitro ileal disappearance (IVID) and in vitro total tract disappearance (IVTTD) of dry matter (DM) and nitrogen in BSF larva (15 d of age), BSF prepupa (d 17), and BSF adults (d 34) were determined. The IVID of DM and nitrogen in BSF larva was higher () than that in BSF prepupa and BSF adults. The IVTTD of DM in BSF larva and BSF prepupa was higher () than that in BSF adults. In experiment 2, the BSF larva employed in experiment 1 was processed using 4 different methods to obtain dried larva press liquid, dried larva press cake, partially defatted larvae meal (PDLM), and fully defatted larvae meal. The IVID of DM and nitrogen in PDLM was higher () than that in other 3 ingredients. The IVTTD of DM in dried larva press liquid and PDLM was higher () than that in dried larva press cake or fully defatted larvae meal. Based on the feed ingredients employed in experiments 1 and 2, quadratic and linear prediction equations were developed for IVID of DM (; ) and IVTTD of DM (; ), respectively, in BSF-derived ingredients using nitrogen as an independent variable. Overall, the nutrients in BSF larva at 15 d of age were better utilized compared with older growth stages, and the nutrients in PDLM were better utilized compared with other processing methods. Equations for IVID and IVTTD of DM were developed using nitrogen concentrations as an independent variable in BSF-derived ingredients for pigs.

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可通过氮浓度估算黑飞虱作为猪饲料成分的体外营养消化率值

研究目的是确定黑背天蝇（BSF；Hermetia illucens）不同生长阶段（实验 1）和加工方法（实验 2）对猪体外营养消化率的影响，并开发用于估算 BSF 体外营养利用率的预测方程。在实验 1 中，测定了 BSF 幼虫（15 日龄）、BSF 蛹（17 日龄）和 BSF 成虫（34 日龄）的干物质（DM）和氮的体外回肠消失率（IVID）和体外总道消失率（IVTTD）。BSF幼虫的DM和氮的IVID（）高于BSF蛹和BSF成虫。BSF 幼虫和 BSF 蛹的 DM IVTTD 比 BSF 成虫高（）。在实验 2 中，对实验 1 中使用的 BSF 幼虫采用 4 种不同的方法进行处理，得到干幼虫压榨液、干幼虫压榨饼、部分脱脂幼虫粉（PDLM）和完全脱脂幼虫粉。PDLM 中的 DM 和氮的 IVID 均高于其他 3 种配料。干幼虫压榨液和 PDLM 的 DM IVTTD 比干幼虫压榨饼和全脱脂幼虫粉高（）。根据实验 1 和 2 中使用的饲料原料，以氮为自变量，分别建立了 BSF 衍生原料中 DM IVID（；）和 DM IVTTD（；）的二次方和线性预测方程。总体而言，15 d 龄的 BSF 幼虫中的营养成分比生长阶段更长的幼虫得到了更好的利用，而 PDLM 中的营养成分比其他加工方法得到了更好的利用。使用氮浓度作为猪用 BSF 衍生配料的自变量，建立了 DM IVID 和 IVTTD 的等式。

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来源期刊

Journal of Insects as Food and Feed Agricultural and Biological Sciences-Insect Science

CiteScore

7.00

自引率

17.60%

发文量

133

期刊介绍： The Journal of Insects as Food and Feed covers edible insects from harvesting in the wild through to industrial scale production. It publishes contributions to understanding the ecology and biology of edible insects and the factors that determine their abundance, the importance of food insects in people’s livelihoods, the value of ethno-entomological knowledge, and the role of technology transfer to assist people to utilise traditional knowledge to improve the value of insect foods in their lives. The journal aims to cover the whole chain of insect collecting or rearing to marketing edible insect products, including the development of sustainable technology, such as automation processes at affordable costs, detection, identification and mitigating of microbial contaminants, development of protocols for quality control, processing methodologies and how they affect digestibility and nutritional composition of insects, and the potential of insects to transform low value organic wastes into high protein products. At the end of the edible insect food or feed chain, marketing issues, consumer acceptance, regulation and legislation pose new research challenges. Food safety and legislation are intimately related. Consumer attitude is strongly dependent on the perceived safety. Microbial safety, toxicity due to chemical contaminants, and allergies are important issues in safety of insects as food and feed. Innovative contributions that address the multitude of aspects relevant for the utilisation of insects in increasing food and feed quality, safety and security are welcomed.