Presentation Details
| Assaying feeding behavior in adult black soldier fly (Hermetia illucens) to improve welfare on farms Meghan Barrett1, Nick Dobrowolski1, Edward Waddell2. 1Indiana University Indianapolis, Indianapolis, IN, USA.2Holy Family University, Philadelphia, PA, USA |
Abstract
Black soldier flies (BSF; Hermetia illucens) are poised to become one of the most farmed livestock animals in history. The welfare of these animals, if sentient, is important, but has been given little empirical attention; this makes it challenging to support producers looking to improve practice. One concern is that adult BSF are not fed due to a misconception that they cannot eat. However, adult BSF have functional mouthparts and digestive systems, feed in the wild, and their longevity is extended when fed. Here, we aim to determine the appropriate diet for feeding adult BSF in the industry. We assess preferences for both proteins and carbohydrates, their inclusion levels, and the physical state (solid/liquid/gel) of the diet. We determine that BSF prefer yeast and molasses at a 1:4 - 1:8 P:C ingredient ratio. We demonstrate that feeding adult BSF their preferred diets increases longevity, mating behavior, and egg lay. Finally, we highlight three feeding assays that can be used to assess BSF preference and consumption. These data suggest that feeding adult BSF encourages natural behaviors and allows for adequate nutrition, ultimately improving their welfare.
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No part of this publication may be reproduced, distributed, or transmitted in any form or by any means, including photocopying, recording, or other electronic or mechanical methods, without the prior written permission of the author.
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