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Nutritional value of three Blattodea species used as feed for animals

100%

Kulma M., Plachy V., Kourimska L., Vrabec V., Bubova T., Adamkova A., Hucko B.

Journal of Animal and Feed Sciences

2016

tom 25

nr 4

Nutrient contents of subadult and adult Blaptica dubia, Blaberus discoidalis and Blatta lateralis roaches, commonly used as feed source for insectivorous animals in captivity, were determined. Contents of crude protein, fat, ash, chitin, carbohydrates, calcium and phosphorus were analysed. Adults of all species contained more crude protein (602–678 g · kg−1 DM > 489–547 g · kg−1 DM) and ash (42–51 g · kg−1 DM > 36–40 g · kg−1 DM) but less fat (145–214 g · kg−1 DM < 236–363 g · kg−1 DM) than subadults. Chitin content ranged 53–86 g · kg−1 DM and the calcium to phosphorus ratio was 1:1.9–23.5. Amino and fatty acid profiles were also determined. Very high levels of glycine (66.4–166.2 g · kg−1 DM) and alanine (81.5–118.4 g · kg−1 DM) were found in all examined samples. On the other hand, the lowest amino acid levels were determined in such sulphuric amino acids as cysteine (0.5–2.1 g · kg−1 DM) and methionine (4.0–17.2 g · kg−1 DM). Regarding essential amino acids, very high lysine (48.6–94.0 g · kg−1 DM) and valine (53.3–84.0 g · kg−1 DM) levels were determined. Essential amino acid index was found at the level of 0.4–0.9. In analysed cockroaches high oleic (38.0–44.2%), linoleic (8.5–15.3%) and palmitic (21.6–26.8%) fatty acids levels were determined. The obtained results indicate that quantity of protein and lipids varied between subadult and adult cockroaches within the species, while quality of these nutrients remained stable.

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Fat from tenebrionidae bugs – sterols content, fatty acid profiles, and cardiovascular risk indexes

100%

Mlcek J., Adamkova A., Adamek M., Borkovcova M., Bednarova M., Knizkova I.

Polish Journal of Food and Nutrition Sciences

2019

tom 69

nr 3

This work focused on analysing the content of selected sterols and profi le of fatty acids of edible insect species – mealworm (Tenebrio molitor) and superworm (Zophobas morio), which are expected to increase their usability in human nutrition. Sterols content was determined using capillary gas chromatography method. Cholesterol content was determined at 1335 mg/kg in dry matter (DM) for the mealworm, which was less than for superworm (3224 mg/kg DM). Other sterols analysed were stigmasterol and β-sitosterol, which were once again higher in superworm (stigmasterol – 44 mg/kg DM and β-sitosterol – 414 mg/kg DM) than in mealworm (stigmasterol – 18 mg/kg DM and β-sitosterol – 171 mg/kg DM). From the nutritional point of view, the amount of cholecalciferol is also not negligible, which was 190 μg/kg DM in mealworm and 199 μg/kg DM in superworm. Atherogenic index (AI), thrombogenic index (TI), and cholesterol index (CSI) were calculated for both species and compared with the results of other authors. These indexes are often considered predictors of cardiovascular diseases. A potential benefi t of both species could be the balanced proportion of sterols of animal and plant origin that could be nutritionally well-accessible and lower weight of dry matter necessary to consume to cover the daily dose of linoleic acid compared to dried beef.

Effect of temperature and feed on the mineral content and the content of selected heavy metals in mealworm

84%

Adamkova A., Mlcek J., Adamek M., Fisera M., Borkovcova M., Bednarova M., Hlobilova V., Vojackova K.

Journal of Elementology

2020

tom 25

nr 3

Ograniczanie wyników

1 Journal of Animal and Feed Sciences

1 Journal of Elementology

1 Polish Journal of Food and Nutrition Sciences

3 Adamkova A.

2 Adamek M.

2 Bednarova M.

2 Borkovcova M.

2 Mlcek J.

1 Bubova T.

1 Fisera M.

1 Hlobilova V.

1 Hucko B.

1 Knizkova I.

1 Kourimska L.

1 Kulma M.

1 Plachy V.

1 Vojackova K.

1 Vrabec V.

1 2020

1 2019

1 2016

Wyniki wyszukiwania

Nutritional value of three Blattodea species used as feed for animals

Fat from tenebrionidae bugs – sterols content, fatty acid profiles, and cardiovascular risk indexes

Effect of temperature and feed on the mineral content and the content of selected heavy metals in mealworm