Ukuthengwa Kwezinhlanzi Ezincane

© Henk Stander
Ukuthengwa kwezinhlanzi ezincane ezinhle (izinhlamvu ezincane) kuyisici esibalulekile samapulazi ahamba phambili okudoba amanzi ahlanzekile. Thenga kusuka kuma-hatcheries aphethwe kahle, buza kwabanye abalimi, futhi uqiniseke ukuthi uthenga inhlanzi enempilo.

Amaphuzu alandelayo ayiziqondiso:

Qinisekisa intengo yokuthengisa kusengaphambili futhi uqhathanise nabanye abahlinzeki bezinhlanzi.

Hlola ukubukeka kwenhlanzi, inani labantu ngabanye, ubukhulu obukhulu nobudala.

Qinisekisa ukuthi konke ukulinganisa nokubala kwenziwe kahle ngoba uzokhokha umphakeli ngezinkilogram ezinhlanzi ezilayishiwe. Isibalo esiphelele nenani lezinhlanzi zibalulekile ekubikezelweni kokukhula okuzayo kanye nokubala kwezinga lokuguqulwa kokudla (FCR).
I-FCR iyunithi yokudla okusetshenziselwa ukukhiqiza i-unit of fish fish.

Hlola isampula yezinhlanzi ezingu-100 kuya ku-200 cishe isonto elilodwa. Uma kungekho impendulo engalungile ephawulwayo, zonke ezinye izinhlanzi zingafakwa. Le nqubo izosiza ukuhlola ikhwalithi yamanzi yedamu lakho futhi unciphise ingozi yokulahlekelwa inhlanzi lapho ibhomu ligcwele ngokuphelele.

Finyelela isivumelwano nomphakeli ngendlela nendlela yokukhokha.

Ukuthuthwa Kwezinhlanzi Kuya Kumasayithi Akhulayo

Lungiselela imishini edingekayo futhi ulungiselele izinhlanzi zokuthutha. Ukuqapha okuqhubekayo ngesikhathi sokuthutha kubaluleke kakhulu ukuqinisekisa inhlalakahle yezinhlanzi nokuthi kuzofika esimweni esihle. Qaphela lokhu okulandelayo:

Imvume evela ehhovisi elisemthethweni yokulondoloza esifundazweni sakho liyadingeka ekuthuthweni kwezinhlanzi. Lokhu kufanele kutholakale okungenani izinsuku ezingu-14 ngaphambi kokuthutha okuhleliwe, kunxusa imenenja yezobuchwepheshe e-Henk Stander ye-Aquaculture: uMnyango wezilwane eNyuvesi yaseStellenbosch.

Hlola ukubikezela sezulu ezinsukwini ezimbalwa ngaphambi kokuthutha. Esikhathini sezulu esifudumele ukunakekelwa okungeziwe kuyadingeka ngokuthutha izinhlanzi.

Yazisa inhlanzi okungenani kwezinsuku ezintathu kusengaphambili ukuze uthole iminwe enesimo esihle esitokisini echibini lakho.
Amazinyo kufanele afakwe isimo ngaphambi kokuhamba. Lokhu kusho ukuthi abondliwe okungenani amahora angu-24 kuya kwangu-48. Lokhu kwenza kwenzeke ukuthi umculi wezinhlanzi akhethe izinhlanzi esimweni esihle kakhulu.

Imishini yokuthutha ingaqashwa kubalimi bezohwebo. Thatha i-tank eyengeziwe ye-oksijini ngezimo eziphuthumayo futhi uqinisekise ukuthi yonke imishini isebenza kahle. Amathangi e-oksijeni angaqashwa kusuka kubalimi bezentengiselwano noma kusuka kubaphakeli begesi njenge-Afrox.

Ukulayisha amathangi okuthutha ngokwezinkinga eziphakanyisiwe: 1.0 - 1.2 kg yenhlanzi ngamalitha angu-10 amanzi.

Ukunquma amazinga e-oksijeni nesimo senhlanzi emathangi ngemuva kokuthi ilayishwe futhi nje ngaphambi kokuba kuqale ukuthuthwa kwezinhlanzi. Qinisekisa ukuthi amashubhu e-oksijini awavinjiswanga amathangi amakhulu; Ama-1000 amalitha amanzi anesisindo esingu-1!

Hlola amathangi njalo emaminithini angu-20 kuya kwangu-30 ngesikhathi sokuthutha. Izinhlanzi kumele zibe namandla futhi zihambe kalula. Qinisekisa ukuthi amazinga e-oxygen namanzi okushisa angaphansi kwemingcele. Uma izinhlanzi zibonakala zikhathele noma ziphazamisa emanzini emvelo, amazinga e-oksijeni angase abe phansi futhi okomoya okweziwe kufanele akhululwe emanzini.

Umshayeli weloli lokuthutha kufanele aqiniseke ukuthi ingcindezi yesondo ilungile futhi kufanele iqhube ngokucophelela ngaso sonke isikhathi.

Lapho ufika emanzini, zama ukulinganisela phakathi kwamanzi okuthutha amanzi namanzi amanzi, ngokuhambisana nokushisa kanye nokwakhiwa kwamakhemikhali, ngokuxuba amanzi angu-50% ngamanzi amanzi. Ungadlulisi izinhlanzi ngqo emanzini. Qinisekisa izinhlanzi kuqala ngamahoreni ambalwa bese ubakhulula ngobumnene emanzini; phakathi-ekuseni noma ntambama kungcono kakhulu.
Ngemuva kokuba izinhlanzi zigcinwe, ulinde okungenani amahora angu-12 ngaphambi kokudla kokuqala bese uqapha izinhlanzi eduze kwamahora angu-24 kuya kwangu-48 alandelayo.

Translated by Nsika Khoza