Promoting Sustainable Animal Feed: Black Soldier Fly Larvae

We are experimenting with black soldier fly (BSF) larvae as an effective duck feed alternative.

Black Soldier Fly Larvae
Animal feed
  • Rich with essential nutritional elements
  • Efficent way to dispose of organic waste
BSF is appropriate as animal feed during the larvae and pre-pupae period

This project has been fully funded.
Thank you to all who contributed.


Duck breeders in Klungkung and Tabanan, Bali, face difficulties finding alternative sources of feed for their ducks. Their current duck feed consists of a mix made up of three parts bran with one part concentrate and is viewed as problematic for two primary reasons:

  • Large-scale duck breeders in Bali cannot produce their own bran and concentrate. Instead, they must purchase this feed from non-Bali based suppliers, leaving the breeders vulnerable to inconsistent sourcing, excessive shipping fees, and price fluctuations when there is a supply disruption.

  • The bran and concentrate is expensive impacting their duck farming profit. The concentrate costs approximately IDR 385,000 (~US$28.89) per 50 kg sack (or about IDR 7,600 or ~US$0.57 per kg), while bran costs IDR4,000 (~US$0.3) per kg. On average, each duck breeder in Klungkung has 3,000 ducks bred for their meat and eggs. This amount of ducks require 100 kg of concentrate and 300 kg of bran per day, which totals nearly IDR 2,000,000.00 (~US$150) in daily feeding costs.

To address these challenges, there is a need to improve the supply of duck feed in Bali by introducing a more sustainable, locally produced, and inexpensive product. 

What we want to test: 

BSF larvae are a harmless species of insect that is common to tropical and warmer temperate regions. Rearing BSF is an efficient way to dispose of organic waste as the BSF larvae who feed on the organic waste are converted into a protein and fat-rich biomass suitable as a feed supplement.

We want to test whether BSF larvae is an effective duck feed alternative by comparing three types of duck feed:

  1. Mix of concentrate and bran (current feed);

  2. Mix of bran and BSF larvae; and

  3. Mix of vegetable waste and BSF larvae.

What will we measure: 

Our partner, the Black Soldier Fly Farm Bali will rear the BSF and feed the ducks for 20 days, the standard time needed for meat ducks to grow to maturity and be ready for sale. We will isolate 10 ducks for each group, feeding them exclusively on one type of duck feed. Made Kusuma, from the Black Soldier Fly Farm Bali will measure these indicators in each group after 20 days:

  • the weight of each duck;

  • the costs for each of the three varieties of feed; and

  • the selling price for each duck once they reach maturity.

Who are we working with: 

We are working with the Black Soldier Fly Farm Bali to test BSF as an alternative source of duck feed. If the BSF larvae prove nutritionally comparable to the current feed, duck breeders in Bali can save money by purchasing feed that is produced locally and is not as prone to price fluctuation.

Project timeframe: 
Three months
Location :
Local Partner Contribution: 

Non-financial contribution: Our partner, Made Kusuma will donate his time to build the BSF cage, rear the BSF, feed the ducks  and collect data.

Project Costs: 
Cost TypeCost DescriptionCost Amount
Project Implementation and Technology
Costs associated with project coordination and the technology
Monitoring and Evaluation
Costs associated with data collection and analysis
Administration Fee
Cost of transferring payments internationally, processing online donations (5%) and a contribution to Kopernik's operational costs (15%)
Fluctuations in currency exchange rates and shipping costs may change the final quantity of technologies we ship for this project.

A huge Kopernik thank you to the 107 people who pitched in $4,029.87