Remake of Remake of My supercalifragilisticexpialidocious padlet by GOH YI SEN https://padlet.com/200016814/j66kx99zka1n9z8m Made with kukunuts en-us 2022-02-07 03:48:26 UTC 2022-02-07 05:36:43 UTC hello@padlet.com Channel Catfish 200016814 https://padlet.com/200016814/j66kx99zka1n9z8m/wish/2032212434 Eats both plant and animal matter]]> 2022-02-07 03:50:13 UTC https://padlet.com/200016814/j66kx99zka1n9z8m/wish/2032212434 Larvae 200016814 https://padlet.com/200016814/j66kx99zka1n9z8m/wish/2032212635 1)fry are small with large egg yolk and able to eat small insects

2)behavior-swims upwards and stays at the surface

3) has stomach, well developed digestive system after yolk sac absorption

Feed type: floating powder/crumbled feed

Nutritional requirements:
55% protein-from teammates notes
majority of protein comes from fish meal/marine fish, to provide phospholipids that plants do not have as much.

]]> 2022-02-07 03:50:24 UTC https://padlet.com/200016814/j66kx99zka1n9z8m/wish/2032212635 Juvenile 200016814 https://padlet.com/200016814/j66kx99zka1n9z8m/wish/2032212783 32-36% crude protein then 28% as it ages

Can use more plant proteins]]> 2022-02-07 03:50:31 UTC https://padlet.com/200016814/j66kx99zka1n9z8m/wish/2032212783 Broodstock 200016814 https://padlet.com/200016814/j66kx99zka1n9z8m/wish/2032213024 Iteroparous

In preparation for spawning, feed should be high in proteins and lipids for vitellogenin deposition. This affects egg quality and fry survival

32% or 36% protein

feed was coated with 2% oil, perhaps to improve water stability. Floating pellet may not be readily accepted, but sinking pellets more readily accepted]]> 2022-02-07 03:50:45 UTC https://padlet.com/200016814/j66kx99zka1n9z8m/wish/2032213024 Marketable size 200016814 https://padlet.com/200016814/j66kx99zka1n9z8m/wish/2032213254 fed finisher feed-low in protein
It can take many months to sell out catfish, thus, lower cost of feed as FCR is high in adults
Using mostly plant proteins is fine as it is their diet]]> 2022-02-07 03:50:55 UTC https://padlet.com/200016814/j66kx99zka1n9z8m/wish/2032213254 Protein requirement 200200402 https://padlet.com/200016814/j66kx99zka1n9z8m/wish/2032258804 Fry - 55% for optimum growth
Fingerlings and juveniles - 36-40%
Grow-out - 25-36%
Broodstock - 32%
  • A study found that increasing protein level in the diet of the broodstock from 32 to 42% did not influence spawning, fecundity or fertilization
]]> 2022-02-07 04:30:21 UTC https://padlet.com/200016814/j66kx99zka1n9z8m/wish/2032258804 Feeding regime 15026806_2 https://padlet.com/200016814/j66kx99zka1n9z8m/wish/2032261020
  • Daily feed ration affected by many factors including temp, water quality, etc
  • Attempts to determine best feeding regime for cultured channel catfish has produced varying and even contradictory results
  • Therefore, no single feeding regime can be applied across all circumstances
  • Generally, fry fed at 6%-10% of body weight across multiple sessions
  • Fingerlings fed 2-5% of  body weight across 2 or more sessions
  • Broodstock at 1-2% of body weight
  • Most farmers feed once (to satiation) daily, every day, during warmer months
  • A study in 2014 found that when catfish are fed to apparent satiation there is no advantage to multiple feedings, to feeding at a specific time of day or to intermittent fasting (6 days feeding, 1 day fast) in terms of FCR
  • They should be fed in the morning
  • When morning temp is >26 degree celsius, fish should be fed twice daily for max food consumption and growth
  • When temp 22-26 degree celsius, feeding once a day gave best results
  • When temp below 20 degree celsius, they should be fed on alternate days
    • ]]>     2022-02-07 04:32:04 UTC https://padlet.com/200016814/j66kx99zka1n9z8m/wish/2032261020     Protein sources 200200402 https://padlet.com/200016814/j66kx99zka1n9z8m/wish/2032266202 Earlier studies: 60% of protein in catfish diet should consist of fishmeal (FM).
    However recent studies have found that replacing FM with all-plant-proteins sources do not adversely affect fish performance.
    • Sink, Lochmann, and Kinsey (2010) discovered that channel catfish fry fed all-plant-protein diets (soybean meal, SBM) grew at the same rates as those receiving FM protein in diets. 
    • The performance and survival of the fish were not significantly different when fed diets containing 36 or 45 percent protein and SBM or FM protein sources.
    ]]>     2022-02-07 04:36:42 UTC https://padlet.com/200016814/j66kx99zka1n9z8m/wish/2032266202     Egg 200016814 https://padlet.com/200016814/j66kx99zka1n9z8m/wish/2032273628 takes 4-6 days to hatch with appropriate range of temperature of 24-26 degree celsius]]> 2022-02-07 04:43:30 UTC https://padlet.com/200016814/j66kx99zka1n9z8m/wish/2032273628 Lipid and essential fatty acid requirement 200200402 https://padlet.com/200016814/j66kx99zka1n9z8m/wish/2032275255 When compared to a control diet with 4% fish oil, Sink and Lochmann (2008) discovered that supplementing catfish broodstock diets with 10% fish oil boosted spawning success, fecundity, total egg volume, egg weight, total egg lipid concentration, hatching success, and fry survival.
    • Sink and Lochmann (2008) investigated the effects of dietary lipid source (poultry fat (PF) or menhaden fish oil (FO)) and level (4 or 10%) on channel catfish broodstock egg biochemical composition, egg and fry production, and egg and fry quality. They discovered that spawning results were similar and higher at 10% PF or FO than at 4% PF or FO. Catfish can also synthesize long-chain HUFAs from 18-carbon precursors.
    ]]>     2022-02-07 04:45:01 UTC https://padlet.com/200016814/j66kx99zka1n9z8m/wish/2032275255     nutritional content to be fed for fingerling-juvenile 200016814 https://padlet.com/200016814/j66kx99zka1n9z8m/wish/2032281192 trend: protein decreases as size/age increase
    BW fed: also decrease]]>     2022-02-07 04:50:27 UTC https://padlet.com/200016814/j66kx99zka1n9z8m/wish/2032281192     size 20022191_4 https://padlet.com/200016814/j66kx99zka1n9z8m/wish/2032281239 - eggs: average size of 3.2mm in diameter 
    - size of young at hatching is 6.4mm
    - size of juveniles 1.3 inches in length 
    - size of adults between 15 - 24 inches ]]>     2022-02-07 04:50:29 UTC https://padlet.com/200016814/j66kx99zka1n9z8m/wish/2032281239     Link: 15026806_2 https://padlet.com/200016814/j66kx99zka1n9z8m/wish/2032285044 https://www.fao.org/fishery/affris/species-profiles/channel-catfish/feeding/en/]]> 2022-02-07 04:54:05 UTC https://padlet.com/200016814/j66kx99zka1n9z8m/wish/2032285044 type of larvae 20022191_4 https://padlet.com/200016814/j66kx99zka1n9z8m/wish/2032294034 - precocial larvae 
    (has a functional stomach)]]>     2022-02-07 05:01:59 UTC https://padlet.com/200016814/j66kx99zka1n9z8m/wish/2032294034     Fertilization 200200402 https://padlet.com/200016814/j66kx99zka1n9z8m/wish/2032294823 During the first 3–4 weeks of culture, the primary diet of cultured channel catfish fry is zooplankton (copepods and cladocerans).
    • The entire aim of fertilizing catfish fry ponds is to create a phytoplankton bloom that will result in significant stocks of copepods and cladocerans for feeding
    • Tucker and Robinson (1990) recommended fertilizing fry ponds with liquid inorganic fertilizers at rates of 0.2–0.6 kg/ha N or 0.3–0.8 kg/ha P every 2 days until a bloom develops.
    ]]>     2022-02-07 05:02:41 UTC https://padlet.com/200016814/j66kx99zka1n9z8m/wish/2032294823