Feed Parameters Influencing the Breeding of Mealworms (Tenebrio molitor)

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00027014%3A_____%2F21%3AN0000178" target="_blank" >RIV/00027014:_____/21:N0000178 - isvavai.cz</a>

Alternative codes found

RIV/70883521:28610/21:63540178 RIV/00216305:26220/21:PU142841 RIV/70883521:28110/21:63540178

Result on the web

<a href="https://www.mdpi.com/2071-1050/13/23/12992" target="_blank" >https://www.mdpi.com/2071-1050/13/23/12992</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.3390/su132312992" target="_blank" >10.3390/su132312992</a>

Result language

angličtina

Original language name

Feed Parameters Influencing the Breeding of Mealworms (Tenebrio molitor)

Original language description

With the growing public interest in edible insects, breeders are forced to increase the volume of production and shorten the life cycle of farmed insects. The exact composition of the feed is the know-how of each manufacturer. The aim of this work was to determine the general impact of individual conventional types of feed (bran, whey, raw ware potatoes) on the life cycle rate of Tenebrio molitor (TM), larval mortality and the content of fats, fatty acids and nitrogenous substances in larvae and their excrements. For the reasons of sustainability of the state of nature and waste disposal, polystyrene foam was added to the experiment as feed. The experiment was performed in two phases—rearing for 21 weeks and 5 weeks. The nitrogen content was determined using the Kjeldahl method (ISO 1871: 2009), the fat content by the Soxhlet method and the fatty acid profile using a gas chromatograph with a flame ionization detector (FID). The results of the work show that the basis of the TM feed is wheat bran, not only due to the observed low larval mortality (45% over 21 weeks) and their optimal nutritional value (nitrogenous substances 53.6% DM, fat 37.1% DM, the highest total fatty acid content) but also due to the higher speed of TM development. Lower larval mortality during rearing was found when feeding dried whey and raw ware potatoes, but the development cycle rate was low. This confirmed that the bran as a feed allowed a fast life cycle with good larval nutritional parameters. From a nutritional and reproductive point of view, TM appeared to be a suitable alternative to animal production. Polystyrene as a feed, tested for biodegradation by TM larvae, caused the highest larval mortality (75% in 21 weeks). However, the content of nitrogenous substances in the larvae increased to 69.77%, in the excrement, it even increased to 82.68%, and there was no cannibalism among the larvae. The work thus demonstrated the possibility of biodegradation of polystyrene using TM larvae with an increase in nitrogenous substances in both larvae and excrement.

Czech name

—

Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

—

OECD FORD branch

40201 - Animal and dairy science; (Animal biotechnology to be 4.4)

Project

—

Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2021

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Sustainability

ISSN

2071-1050

e-ISSN

—

Volume of the periodical

13

Issue of the periodical within the volume

23

Country of publishing house

CH - SWITZERLAND

Number of pages

14

Pages from-to

Article number: 12992

UT code for WoS article

000735091000001

EID of the result in the Scopus database

2-s2.0-85119992611