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gringojay

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gringojay
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  • Hargol Food Tech says has developed manipulated envorment for 2 week grasshopper egg cycle completion instead of 40 weeks. Design uses vertical rearing for maximizing space & because grasshoppers swarm, unlike crickets, collecting large quantiti…
    in grasshoppers Comment by gringojay May 13
  • Oviposition site preferences have been found in several insect studies & I think we can extrapolate that to include crickets, like the house cricket. Let me try to explain how this may be another factor that can be manipulated for commercial pro…
    in CRICKETS Comment by gringojay April 5
  • Again jamesjohn70, - You may want to choose an egg laying substrate that allows you to warm it above room temperature economically (sand?); if research using Gryllus texensus extrapolates to A. domesticus. See (2013) "Warm and cozy: temperature and …
    in CRICKETS Comment by gringojay April 5
  • Again doindi, - Probably your personal methods used will affect your data on how final harvest works out from numbers of crickets began with as stock. According to McCluney & Date's (2008)" The effect of hydration on growth of the house cricket…
    in CRICKETS Comment by gringojay April 5
  • Hi jamesjohn70, - I don't rear crickets but the above cited report "Model for ... as food" makes some points about egg laying (oviposition) substrate. Briefly: adults kick up that sector & do not want too small an area for this. Likewise too dr…
    in CRICKETS Comment by gringojay April 4
  • Hi doindi,- Elsewhere in Forum (1993) "Model for usr in mass-production of Acheta domesticus ... as food" graphs the factors influencing cricket numbers end up getting from what begin with.
    in CRICKETS Comment by gringojay April 4
  • Hi doindi, - Coaloa Valley Farms in California grow "sprouts" in aquaponics fertilized by fish waste & rear their crickets on them. I am presuming that they are not culling these "sprouts" as young as we see the kind of sprouts offered humans. …
    in CRICKETS Comment by gringojay April 3
  • 850 micron (0.03 inch) mesh let newly hatched mealworm larvae fall through for Morales-Ramos' 2012 report; as discussed in Forum thread "beetles per sq. inch". The cited study used a flow-through design similar to what you envision & left bran/b…
  • I presume some operations use the method of stacked bins for flow-through development. The mealworm eggs are naturally going to become "stuck" on bin walls, floors & substrate (ex: bran); so if not on very small pieces of substrate few should fa…
  • Hi MidwestMealworms, - Your 1/8 inch mesh = 3.175 mm & the above Australian citatation gives average mealworm egg as 1.25mm (1/20 inch), so I don't see that eggs have to scrape through. My thinking is that any mesh size which makes sifting go fa…
  • Hi formosa, - There is research on using mealworms as biological (entomo-pathogenic) control host. The following are available on-line as free full text. If have trouble accessing any let me know & I will relay better details. (2011) Baliadi, e…
  • Hi paparazzit, - I think the transient exudation of white is an amino acid being released from protein contact with water. Aminos & the acid of an amino acid change their charges depending on the water pH. Protein can froth & presumably your…
  • Hi MikeRochester, - The remedial benefits of Periplaneta americana cockroach powder are probably little known in the USA & I doubt you can competatively sell to China labs. My suggestion is to process the powder into a concentrate & then ma…
  • Space10's "Crispy Bug Ball" recipe = 100 gr beet root, 50 gr. parsnip, 50 gr potato + 50 gr. mealworm larvae ground & made into "burger" patty, served on bun.
  • Hi scrappy907, - Groats retain the bran & other parts of whatever grain chipped from . Just bran is enough for mealworms to go through their life cycles. Probably your groats are oats, since sold as oats - even though you might have been expec…
    in Groats Comment by gringojay March 11
  • Hi paparazzit, - - Larva are the best to use for us.
  • Continuation .... One (1) gr. protein consumed by mealworm larvae also devolves about 0.5 gr. metabolic water, plus about 0.5 gr. uric acid. A live fed larvae has between 0.25 - 0.5% uric acid inside it. If it excretes 0.5 gr. uric acid that means…
  • Hi Moofisilla, - An ideally blended mealworm larvae diet would be interesting to know that is more cost effective than wheat bran. Meanwhile, here are some thoughts on your linked ideas. Because larvae go through different stages (instars) I will be…
  • Hi jfortini, - If you place then in 3°C to euthanize them this may be affecting the subsequent color. Possibly your post-blanching freeze & thaw step is the real culprit,. Living tissue when frozen can free up groups of carbon linked to oxygen …
  • Use "Web" (not "mobile") version of Forum, type into search bar "pictures", try 2nd page that gets pulled up about 1/2 way down page, see blue title of Forum thread "Commercial insect farming" & will come to pictures of how I set up the grow bag…
  • 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/…