BIOFLOK TEXNOLOGIYASI SHAROITIDA AFRIKA LAQQASI (CLARIAS GARIEPUNIS) BALIG‘I MALYOKLARINI YETISHTIRISHNING DASTLABKI NATIJALARI
Keywords:
Kalit so‘zlar: Afrika laqqasi malyoklari, biologik flokulyatsiya, yopiq suv tizimi, suv sifati, nitrit (NO2) darajasi, kraxmal potakasi.Abstract
Annotasiya: O‘zbekiston sharoitida Afrika laqqasi (Clarias gariepinus) baliqlari malyoklarini bioflok texnologiyasi asosida yopiq suv tizimida parvarishlash bo‘yicha olib borilgan boshlang‘ich tajriba natijalari bayon etiladi. Tajriba davomida bioflok tizimi va oddiy suv muhitida parvarishlangan baliqlar o‘sish dinamikasi, suv sifat ko‘rsatgichlari va ozuqa iste’moli jihatidan solishtirildi. Bioflok hosil bo‘lishini rag‘batlantirish uchun kraxmal qo‘shildi va nitrit (NO2) muntazam nazorat qilindi.Tajribaning muhim bosqichlarida bioflok miqdorining ortib ketishi natijasida yuzaga kelgan salbiy holatlar, jumladan baliqlar o‘limi xam tahlil qilindi. Olingan natijalar bioflok tizimining afzalliklari bilan bir qatorda, uni muvozanatda ushlab turish zarurligini ko‘rsatdi.Ushbu tajriba bioflok texnologiyasini kichik yoshdagi baliqlar uchun moslashtirishda dastlabki ilmiy asos bo‘lib xizmat qiladi.
References
1. Avnimelech Y. Biofloc Technology – A practical guide book. Baton Rouge: The World Aquaculture Society, 2009. 182 p
2. Низяев С.А., Латковская Е.М., Ревин Ю.А. Использование биофлок-технологии при подращивании гидробионтов на базе установок замкнутого водоснабжения: возможности применения технологии в условиях Дальнего Востока России. Научные труды Дальрыбвтуза. 2024. Т. 67, № 1. С. 96–115. Scientific Journal of the Far Eastern State Technical Fisheries University. 2024. Vol. 67, no 1. P. 96–115.
3. Kumar S, Anand PSS, De D, Deo AD, Ghoshal TK, Sundaray JK, Ponniah AG, Jithendran KP, Raja RA, Biswas G, Lalitha N (2015) Effects of biofloc under different carbon sources and protein levels on water quality, growth performance and immune responses in black tiger shrimp Penaeus monodon (Fabricius 1978. Aquac Res 48:1168–1182
4. De Schryver P, Crab R, Defoirdt T, Boon N, Verstraete W (2008) The basics of bioflocs technology: the added value for aquaculture. Aquaculture 277:125–137
5.Romano N, Kanmani N, Ebrahimi M, Chong CM, Teh JC, Hoseinifar SH, Amin SMN, Kamarudin MS, Kumar V (2017) Combination of dietary pre-gelatinized starch and isomaltooligosaccharides improved pellet characteristics, subsequent feeding efficiencies and physiological status in African catfish, Clarias gariepinus, juveniles.
