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gringojay

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gringojay
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  • Hi dean - I would be inclined to say those are diapause eggs laid. A female geting ready to lay eggs has environmental inputs. If it was cooler than normal & the days seemed shorter (less hours of light, more dark) she will lay diapausing eggs.…
  • Hi Growth88, - Since the Kit suggestion many have commented on their own design & there seems to be practical reasons commercial scale rearing would not use grow bags. I have no affiliation with any Kit & can not speak to it's popularity now…
  • Hi Growth88, - There is some cannibalism at greater larval densities. Large larvae will eat pre-pupae that are immobilized more than they eat pupae. Also, after a moult the young larvae are sometimes eaten by large larvae, usually when conditions a…
  • ZWart & Rulkens (1979) "Improving the calcium content of mealworms" (1 page available on-line) found calcium in vitamin mixtures (11-10% Ca) were "... accepted by mealworms but ... calcium carbonate [(40% Ca)] was not palatable....."
  • The following so-called "human refuse" cricket diet ("HRD") is compared to 3 other diets. The "HRD" composition is 34% peels & leftover fruit /vegetables, 27% rice/pasta, 11% pork/beef meat, 11% bread, 11% cheese skins, 0.6% yolk. As per Collav…
  • Phospholipid ("FL") specific different types ( "FE" = phosphatidyl-ethanolamine , "FI" = phosphatidyl-ionositol , "FS" = phosphatidyl-serine, "FC" = phosphatidyl-choline as % of "LP" (polar lipid) ; also the various % of "triglyceride"/tri-acyl-g…
  • Maybe a horizontal mounted rotating thin wall metal "drum" with an hot water layer outside that "drum" wall & an insulated external "jacket" layer to hold in the liquid. The hot liquid is vented through a valve in to the space between "drum" wal…
  • As per above cited J. Vazquez thesis: Page 78 describes 3 distinct products; flour, dehydrated solids & oil. 1st step is cook & press raw material to get a solid portion ("Torta de Prensa" or press cake) & a liquid portion ("Licor de Pr…
  • J.Vazquez (2014) thesis for Valencia University Politechnica "Plan de Negocio...harina de insectos ...." is available as free full pdf in Spanish: https://riunet.upv.es/bitstream/handle/10251/38960/Plan de Negocio.pdf?sequence=2 Skipping to origina…
  • E. Portillo Ramos (2017) thesis "Estimacion piloto de los costos en la producion y processo de harina de grillo ... en la finca Santa Marta, Morazon, El Salvador" is available in Spanish pdf from https://bdigital.zamorano.edu/bitstream/11036/6159/1/…
  • Hi Mattyjmurray, - A quote of 60-70% protein for cricket content can not be for fresh crickets. If read that it is either a mistake that escaped proofreading by the scientific author(s) or an editorial mistake by a layman; a "commercial concern" mar…
  • "Use of house cricket to address food security in Kenya: Nutrient and chitin composition of farmed crickets as influenced by age", (2017) originally published in Academic Journals is available on-line as free full text. The diet used first should b…
  • Hi Mattyjmurray, - Here is the yield (2015) from a commercial Thai cricket farm in Nacheung. The operation occupied 2,720 sq.mt. In 78 separate growing bins with an average size of 9.43 sq. mt. each growing bin ("pen") with 52% for Acheta domestic…
  • Acheta domesticus densovirus (AdDV) causes slow growth & those that die (from septicemia) lie on their back paralyzed. According to Weissman, et al. (2012) AdDV is not limited to Acheta domestics; see "Billions and billions sold: pet feeder cric…
  • Hi JButera, - "Diseases in insects produced for food and feed", (2015) by Eilenberg, Cappelloza & Nielsen-Leroux, Vlak & Jensen originally published in Journal of Insects as Food and Feed 1(2) is available as free full pdf via ResearchGate.…
  • Hi Mattyjmurray, - I do not rear crickets. J. Dzamba, who designed a mult-chambered cricket production system orientated vertically, estimated 64 Kg crickets/cubic meter at a conference in 2014. DeFoliart & team (1998) reared 6,000 crickets in…
  • If type into Forum ("web" version) search bar the word "Ghana" you can find references to & synopsis of (2015) "Bioconversion of organic fraction of solid waste using the larvae of the black soldier fly (Hermentia illucens)". One of the search r…
  • Hi graham84, - I have used vegetable & fruit pulp waste (which I think of as "organic" food waste, rather than agricultural crop field waste) to rear both earthworms & black soldier fly larvae. For the earthworms I always added some plant fi…
  • Again piede828, - Rony Perez Paredes & Royer Rose's Sanchez in their thesis "Elaboracion y caracterizacion de harinas para consumo humano a partir de Acheta domesticus y Periplanetas americanas" available on-line as free full pdf in Spanish has …
  • piede828, - So if you are using 45 day old crickets (72.3% water) & create a commercial grade cricket flour (4% water Thailand product) figure a reduction of 68.3% in weight making cricket "flour" from fresh original fresh weight of crickets. Th…
  • Granola bar with cricket flour was researched by Colombian student team Dayana Andrea Blanco Miranda & Daniel Felipe Giraldo Carrillo at the LaSalle Univ. Engineering Dpt. program for Food Tech. See (2016) free full on-line text in Spanish (I ha…
  • Hi piede828, - I refer you to Collavo, Glew, Huang, et al. "House Cricket Small Scale Farming", available as free pdf on-line. It is hosted by Researchgate & if you can not find it let me know. Authors note in Table 27.7 different water % in cr…
  • Yes & you can also mix rye with other grains.
  • Hi oskizzle, I think commercial producers apply juvenile hormone to their larvae, although I have never seen how they get consistant coverage for all larvae. A maximum safe dose might be 1mg juvenile hormone dissolved in 1 ml lab grade hexane misted…
  • Hi Yomanu, - I only have the TinyFarm grow bags, however my inclination is the larger mealworm larvae are capable of chewing any thread fabric such as polyester & cotton in addition to nylon.
  • Bumping data resources thread up for accessibility.
  • Hi genoc, - You probably have seen research on feeding insects to farmed fish. My read is they are not suitable as the only feed - for various reasons. What kind of fish are you trying to grow? Presumably you are looking to alter their nutrition du…
  • I have read crickets fed mint take up that taste. Thais cut down protein before culling & feed pumpkin for some days for better taste. Maybe you are only doing a "gut loading" by feeding cinnamon for a day & the amount inside at time of co…
  • Again heritageacres, - While have a moment wish to elaborate. Again, I am assuming your mealworms were selected by larval size for breeding somewhere along the way. Over time this selectivity likely meant there was eventually inbreeding (big siblin…
  • Hi heritageacres, - One thing that makes some insects larger is by them getting extra time in their developmental cycle eating. This can mean taking an extra instar phase instead of going to pupation as early as they potentially could. Lots of fact…