ആൺ പെൺ വരാലിനെ തിരിച്ചറിയാം|||MALE AND FEMALE IDENTIFICATION OF VARAL( MURREL)

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2 жыл бұрын

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Species profile
Murrel belongs to Channidae family. They are widely distributed in tropical Africa (three species) and Southern Asia predominantly in India, Pakistan, Afghanistan, Nepal, Sri Lanka, Thailand and China. A total of 33 species are globally identified, of this 30 belong to Channa genera, and remaining 3 belong to Parachanna genera. Only 13 species are stated in India.
Murrel is also called as snakehead as it looks like a snake. Murrel is valued and fetches a higher market price especially in states like Andhra Pradesh, Karnataka, Tamil Nadu, West Bengal, Assam, Uttar Pradesh and Haryana due to its eminent nutrition and medicinal value. Hardy nature and ability withstand longer time out of water add greater value to Murrels in the market. Specialized trade involving live fishes is also practiced in India.
Murrel is one of the indigenous air breathing fish; there is a suprabranchial accessory respiratory organ in the murrel head. Murrels can even survive in lower dissolved oxygen levels.
The most important aquaculture species of murrel in India is the striped murrel (Channa striata), the great snakehead murrel (Channa marulius) and the spotted snakehead (Channa punctata). The culture technology is standardised only for striped murrel.
Broodstock
The brood fish are reared in earthen and cement cistern. Smaller size pond (0.04 to 0.1 ha) is favoured rather than larger size pond due to its easy management. The suggested pond depth is 1.0 - 1.5 m. Pond dyke should be made strong enough to prevent fish escape during the rainy season. The earthen pond is prepared similar to that of ponds used for culture of the Indian major carp. The manure (5000 kg/ha/ yr) and the liming (300 kg/ha/yr.) are applied to produce the natural fish food organisms. A total of 2000 to 2500 kg/ha is stocked and are fed with low market value fish and rice bran at the rate of 2 - 3 percent of body weight.
Typically, two year old striped murrels are used for breeding. A 100g female is expected to deliver an average 6000 eggs. The small fish is easy to handle rather than larger size fish. Inbreeding depression occurs due to the use of same blood brood fish and it can be avoided through introduction of brood fishes from outside source (including rivers, stream, other farmers) every year. To adapt to the captive condition, the new brood fish can also be reared in brood tank.
The size of pond and the stocking density depends on the size of fish and targeted growth of fish. The supplementary feed is essential at daily two rations at the rate of 3 - 4 percent of body weight when the stocking density is higher. Adding aquatic weeds in about 20% of water area stimulate the natural environment. Regular examination of maturity, proper care to brooders, implant hormone pellets and post-operative care etc need to be taken care of. Total replacement of water has to be done at least once in a week at regular interval to maintain the water quality.
The sexes are distinguished by using secondary sexual characteristics during the spawning season. The female fish develops a bulging soft abdomen due to the development of ovary and the genital pore becomes reddish and oval shape. The head of the male is round shape and has the smaller genital papilla.
Breeding
In striped murrel, the spontaneous and induced breeding are practiced.
Natural breeding
Fish seed in natural spawning is produced by providing a natural environment through the use of aquatic weeds. The brood fish’s size of 100 - 250 g are stocked in a shallow water depth small size pond. The synchronized movement of brood fishes occurs after the month of March. They build a nest with the use of aquatic weed and lay eggs in the shallow water area of the pond. The eggs are collected from the pond and are reared in the hatchery. This breeding method has a poor breeding response ie. about 20 - 30 percent.
The breeding occurs twice in a year (southwest and northeast monsoon), exclusively in the rainy season. A water depth of 40 - 80 cm is preferred for spawning tank. The aquatic weed (water hyacinth) should cover one-fifth of the breeding pool, which stimulate the spawning. The recommended temperature for spawning is about 25 to 28oC. The requisite administered dose of HCG is about 2000 IU/kg of body weight for the female and for male 1500 IU/kg of body weight. A poor breeding response is observed when HGC is used when compared to the extract of carp pituitary. The desired dose of carp pituitary extract is 20 - 30 mg/kg and 30 - 40 mg/kg of body weight for male and female fish respectively. The injection is given by intramuscular method (at the base of pectoral fin).

Пікірлер: 61

@HakunaMatataYOLO 2 жыл бұрын

aaninyeum pennineyuk ingane ariyamennu ariyillayirunnu

@nishadfarming9989 2 жыл бұрын

എനിക് അറിയുന്ന വളരെ കുറച്ച് കാര്യങൾ മാത്രം ആണ് ഇവിടെ പറഞ്ഞത് . ഈ വിഷയത്തിൽ കൂടുതൽ അറിവുള്ള കാര്യങളും അറിവുള്ള കൃഷിക്കാരും നമ്മുടെ നാട്ടിലുണ്ട് 😍😍

@sajeedkusmankutty2685 2 жыл бұрын

Oru varietie video anallooo puthuya arivukal nallathupolay mansilakki tharunnuuddd good presentation thanks for sharing

@USAMachan 2 жыл бұрын

Good and very informative video me first time know this one so everyone need this information thank you for sharing👌

@Shyam-ym3em 2 жыл бұрын

Nice video, good presentation Nishad.

@jadeertc4214 2 жыл бұрын

Ellaam rakchappedaan nokkukayaanu...👌

@faisalhamsa175 2 жыл бұрын

Good information ❤️❤️

@jameelajameela6939 2 жыл бұрын

Useful information 🌹expect new veedio

@keralavibes672 2 жыл бұрын

Dr nishad 😊good information

@resinartglobal 2 жыл бұрын

Nice explanation👌👌👌

@mallukitchen009 2 жыл бұрын

Good information video 👌👌

@srgcfgroup5929 2 жыл бұрын

Good knowledge 👍👍

@Ajmonworld 2 жыл бұрын

Ithu oru puthiya ariv aanu tto 👌👌

@Pencilcom-db9ti 2 жыл бұрын

Sooper👌👌👌

@robertlawrence7910 2 жыл бұрын

👌

@febalinu1797 2 жыл бұрын

Super vedio 👍

@h.abdulsalim6772 2 жыл бұрын

Varalകൃഷി യുടെ പിതാവിന്അഭിനന്ദനങങൾ

@SonuFabricationOfficial 2 жыл бұрын

👍

@MINDINFLUENCER 2 жыл бұрын

❤

@riswanrisu8290 2 жыл бұрын

Nice super 👍👍👍❤❤

@abhilashpadinharkkara717 2 жыл бұрын

👍👍👍

@DileepKumar-jt1ch 2 жыл бұрын

സൂപ്പർ

@radhamanik8916 2 жыл бұрын

Good video

@yoonasaleemcpcp4839 2 жыл бұрын

Nice talking

@joshyparappuram422 2 жыл бұрын

Spr video

@shameershameer3066 2 жыл бұрын

Good👍👍

@harinathanotp437 2 жыл бұрын

Pollii❤

@jayakrishnant.2039 2 жыл бұрын

Super video, varalil Doctorate edukkanulla shramamano Nishadikka.

@nishadfarming9989 2 жыл бұрын

🥰

@latheeshnc1881 9 ай бұрын

Breeding hormone name,avida kittuka

@sivakanth2030 2 жыл бұрын

Bro 20 pice varal seed ayie kodukundo please replay

@arunachalsparrow 2 жыл бұрын

ഇങ്ങനെയാണോ thirichariyunnne

@moveis848 2 жыл бұрын

Varral food kazunna video

@shakeersha1485 2 жыл бұрын

5 jodyy athrea akum nishad ekka

@nandhang4694 Жыл бұрын

Nadan viral anoo

@reshmapradeep9817 2 жыл бұрын

Puli vaha kunjugale kittumo

@Riversidefishfarm Жыл бұрын

Cherumeen nte ithupole same aano?

@nishadfarming9989 Жыл бұрын

Yes

@shajeeryunus3168 2 жыл бұрын

എന്റെ ടാങ്കിൽ,4/8, വരാൽ ബ്രീഡ് ആയി 500ഓളം കുഞ്ഞുങ്ങൾ ഉണ്ട്, ടാങ്കിൽ 5വലിയ വരാലുകൾ ഉണ്ട്, മറ്റു വരാലുകൾ കുഞ്ഞുങ്ങളെ ഭക്ഷിക്കുമോ

@nishadfarming9989 2 жыл бұрын

Yes bakshikkum matiko

@thanzeelkdmfreefireplayerv7829 2 жыл бұрын

വരൽ എത്ര കിലോ വരും മാക്സിമം

@vinojt9890 2 жыл бұрын

ഹോർമോൺ മെഡിസിൻ കിട്ടാൻ ഉണ്ടോ

@shakeersha1485 2 жыл бұрын

Jody athreayaaa

@nishadfarming9989 2 жыл бұрын

As per size

@user-fn5gd8mf1f 10 ай бұрын

പുഴയിൽ നിന്ന് കിട്ടുന്ന വരാലിനെ എന്ത് ഫുഡ് കൊടുക്കാ

@nishadfarming9989 10 ай бұрын

പുഴയിൽ നിന്ന് കിട്ടുന്നത് സാധാരണയായി ജീവനുള്ള വയെ മാത്രമേ ഭക്ഷിക്കൂ നല്ല ഫ്രഷ് മീൻ കിട്ടുന്ന സമയത്ത് ചെറുതായി കട്ട് ചെയ്ത് കൊടുത്തു നോക്കൂ ചിലപ്പോൾ കഴിക്കും