Uphononongo lwakutsha nje olwenziwe yiAquaculture Research Institute lubonise iziphumo ezithembisayo zokusetyenziswa kwetrichloroisocyanuric acid(TCCA) ekufuyweni kwe shrimp.I-TCCA sisibulali-ntsholongwane esisetyenziswa ngokubanzi kunye nekhemikhali yonyango lwamanzi, kodwa amandla ayo okusetyenziswa kwi-aquaculture ayikaphononongwa ngokucokisekileyo ukuza kuthi ga ngoku.
Uphononongo, olwaluxhaswa ngemali yiNational Science Foundation, lujolise ekuphandeni imiphumo ye-TCCA ekukhuleni kunye nempilo ye-shrimp emhlophe yasePacific (i-Litopenaeus vannamei) kwinkqubo yokujikeleza emanzini.Abaphandi bavavanya iindawo ezahlukeneyo ze-TCCA emanzini, ukusuka kwi-0 ukuya kwi-5 ppm, kwaye babeka iliso kwi-shrimp ixesha leeveki ezintandathu.
Iziphumo zibonise ukuba i-shrimp kwiitanki eziphathwe nge-TCCA zinezinga eliphezulu kakhulu lokusinda kunye namazinga okukhula kunalawo akwiqela lokulawula.I-concentration ephezulu ye-TCCA (5 ppm) ivelise iziphumo ezilungileyo kakhulu, kunye nezinga lokusinda le-93% kunye nesisindo sokugqibela se-7.8 grams, xa kuthelekiswa nezinga lokusinda le-73% kunye nobunzima bokugqibela be-5.6 grams kwiqela lolawulo.
Ukongeza kwiziphumo zayo ezilungileyo ekukhuleni kwe-shrimp kunye nokusinda, i-TCCA ikwangqineke isebenzayo ekulawuleni ukukhula kweebhaktheriya ezinobungozi kunye neeparasite emanzini.Oku kubalulekile ekufuyeni i-shrimp, njengoko ezi pathogens zinokubangela izifo ezinokutshabalalisa yonke i-shrimp.
Ukusetyenziswa kweI-TCCAkwi-aquaculture ayikho ngaphandle kwempikiswano, nangona kunjalo.Amanye amaqela okusingqongileyo avakalise inkxalabo malunga nokubanakho kwe-TCCA ukwenza izinto ezinobungozi xa isabela ngezinto eziphilayo emanzini.Abaphandi emva kophononongo bayayivuma le nkxalabo, kodwa babonisa ukuba iziphumo zabo zibonisa ukuba i-TCCA ingasetyenziswa ngokukhuselekileyo nangempumelelo kwi-aquaculture kwiindawo ezifanelekileyo.
Inyathelo elilandelayo kubaphandi kukuqhuba izifundo ezongezelelweyo ukuphanda iziphumo zexesha elide ze-TCCA ekukhuleni kwe-shrimp, impilo kunye nokusingqongileyo.Banethemba lokuba iziphumo zabo ziya kunceda ukuseka i-TCCA njengesixhobo esixabisekileyo samafama e-shrimp kwihlabathi liphela, ngakumbi kwimimandla apho izifo kunye nezinye izinto zokusingqongileyo zibeka isoyikiso esibalulekileyo kuluntu lwe-shrimp.
Ngokubanzi, olu phononongo lubonisa inyathelo elibalulekileyo eliya phambili ekusetyenzisweni kwe-TCCA kwi-aquaculture.Ngokubonisa amandla ayo okuphucula ukukhula kwe-shrimp kunye nokuphila, ngelixa likwalawula ii-pathogens ezinobungozi, abaphandi baye babonisa ukuba i-TCCA inendima ebalulekileyo yokudlala kwixesha elizayo lokulima i-shrimp ezinzileyo.
Ixesha lokuposa: Apr-28-2023