{"id":14683,"date":"2018-12-28T16:52:00","date_gmt":"2018-12-28T14:52:00","guid":{"rendered":"http:\/\/fishconsult.org\/?p=14683"},"modified":"2020-02-07T17:13:56","modified_gmt":"2020-02-07T15:13:56","slug":"saving-and-not-killing-the-african-catfish-males-through-the-ablation-of-testes","status":"publish","type":"post","link":"https:\/\/fishconsult.org\/?p=14683","title":{"rendered":"Saving and not killing the African catfish males through the ablation of testes"},"content":{"rendered":"\n

Photos\u2019 credit<\/strong>: Mouhamed Hosni Kouotou (Cameroon)<\/p>\n\n\n\n

Description<\/strong>: Abdel Rahman El Gamal (Founder of the website\/FB\npage)<\/p>\n\n\n\n

\"\"<\/figure>\n\n\n\n
\"\"<\/figure>\n\n\n\n

Because the testes of the males of African catfish (Clarias\ngariepinus<\/em>) are situated in the dorsal part of the abdominal\ncavity, and because of the anatomy of the species and the presence of the seminal\nvesicle and internal organs block the flow of milt and prevent its release under\nabdominal massage from live males in captivity. Thus, in order to obtain milt\nfor artificially fertilizing eggs, males are generally sacrificed before testes\nare removed and squeezed to release the milt.<\/p>\n\n\n\n

Losing a male catfish after another could limit their numbers\nalong with the possible production problems. Added to that, sacrificing catfish\nmales hinder particular genetic applications that require the repeated use of\nthe same male especially in the absence of cryopreservation facilities.<\/p>\n\n\n\n

In order to avoid sacrificing the catfish males, surgical\noperations have been successfully practiced. The operation begins with the\nselection of sexually mature males based on their genital papilla.\nAfterwards, the chosen fish is anesthetized usually in bath treatment to the\nlevel that allows the surgical operation.  <\/strong>Even though severalanesthetics\nhave been used, the Tranquil (Tricaine) MS-222 is the only anesthetic approved\nby FDA for use in food fish.<\/p>\n\n\n\n

Once the fish are totally anesthetized, the ventral side of\nfish abdomen should be disinfected using a proper substance such as methylated\nspirit (40% alcohol). Immediately after, an incision is made on the ventral\nside of the abdomen using surgical scissors and the testes are exposed for\nablation whereas about three quarter of the testes were removed for the use in\nthe fertilization of catfish eggs.<\/p>\n\n\n\n

The incisions are typically sutured in a way similar to\nsurgical operations. On the average, the surgical operation lasts about 10-15\nmin. An antiseptic medicine is used to treat the wound and skin infection. Afterwards,\nfish are to be placed in anesthetic-free, aerated water for recovery which is\nexpected to take place within few minutes. <\/p>\n\n\n\n

For a relatively long-term treatment, operated fish may be\nplaced in a tank containing water with antibiotics such as Oxtetracycline at proper\ndosage for recommended period of time; 50mg\/L for 5 days.\n\nOperated fish should be fed high quality feed as\nrequired for speeding the regeneration process of ablated testes which is usually\nreached after a period ranging from as short as 30 days to as long as 120 days\nfrom post the ablation. On the average, the operated male may be used again\nafter about 90 days and so on.\n\n\n\n<\/p>\n","protected":false},"excerpt":{"rendered":"

Photos\u2019 credit: Mouhamed Hosni Kouotou (Cameroon) Description: Abdel Rahman El Gamal (Founder of the website\/FB page) Because the testes of the males of African catfish (Clarias gariepinus) are situated in the dorsal part of the abdominal cavity, and because of the anatomy of the species and the presence of the seminal vesicle and internal organs … <\/p>\n

Continue reading<\/a><\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_jetpack_feature_clip_id":0,"_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_publicize_message":"","jetpack_publicize_feature_enabled":true,"jetpack_social_post_already_shared":true,"jetpack_social_options":{"image_generator_settings":{"template":"highway","default_image_id":0,"font":"","enabled":false},"version":2},"jetpack_post_was_ever_published":false},"categories":[307,359,5226,67,291,293],"tags":[144,4791,320,6832,7020,6833,7019],"class_list":["post-14683","post","type-post","status-publish","format-standard","hentry","category-african-catfish-farmed-species-aquaculture-and-artisanal-fishery-global-information-sharing","category-aquaculture-and-artisanal-fishery-global-information-sharing","category-farmed-species-aquaculture-and-artisanal-fishery-global-information-sharing","category-featured_content","category-gallery-2","category-photos","tag-african-catfish","tag-artificial-propagation","tag-clarias-gariepinus","tag-partial-ablation-of-testes","tag-regeneration-of-ablated-testes","tag-sacrificing-the-males","tag-saving-catfish-males","item-wrap"],"aioseo_notices":[],"aioseo_head":"\n\t\t\n\t\n\t\n\t\n\t\n\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t