Kuyankha kwa Penaeus vannamei kuzinthu zosinthika zachilengedwe kumatchedwa "stress response", ndipo kusintha kwa mitundu yosiyanasiyana ya thupi ndi mankhwala m'madzi ndizovuta.Nsomba zikamayankha kusintha kwa zinthu zachilengedwe, mphamvu zawo za chitetezo cha mthupi zidzachepetsedwa ndipo mphamvu zambiri zakuthupi zidzadyedwa;Ngati kusintha kwa zinthu zopanikizika sikuli kwakukulu ndipo nthawi si yaitali, shrimp imatha kulimbana nayo ndipo sichidzavulaza kwambiri;M'malo mwake, ngati nthawi yopanikizika ndi yayitali kwambiri, kusinthako ndi kwakukulu, kupitirira kusinthasintha kwa shrimp, shrimp idzadwala kapena kufa.

Ⅰ.Zizindikiro za shrimp stress reaction zinali motere

1. Ndevu zofiira, zimakupiza mchira wofiira ndi thupi lofiira la shrimp (zomwe zimadziwika kuti thupi lofiira lopanikizika);

2. Chepetsani kwambiri zinthu, ngakhale osadya zakuthupi, sambirani padziwe

3. Ndikosavuta kudumphira m'dziwe

4. Ziphuphu zachikasu, zipolopolo zakuda ndi ndevu zosweka zimakhala zosavuta kuonekera.

Ⅱ, Zomwe zimayambitsa kupsinjika kwa prawn zinali motere:

1. Kusintha kwa gawo la algae: monga kufa mwadzidzidzi kwa algae, mtundu wamadzi owoneka bwino kapena kuchuluka kwa algae, ndi mtundu wamadzi wokhuthala kwambiri;

2. Kusintha kwa nyengo, monga zotsatira zoopsa za nyengo monga mphepo yozizira, mphepo yamkuntho, mvula yosalekeza, mvula yamkuntho, tsiku la mitambo, kusiyana kwakukulu kwa kutentha pakati pa kuzizira ndi kutentha: mvula yamkuntho ndi mvula yosalekeza idzapangitsa madzi amvula kusonkhana pamwamba pa dziwe la shrimp.Pambuyo pa mvula, kutentha kwa madzi pamwamba kumakhala kochepa ndipo kutentha kwa madzi kutsika kumakhala kokwera kwambiri, zomwe zimapangitsa kuti madzi asokonezeke, ndipo ndere zambiri za photosynthesis zimafa (kusintha kwa madzi) chifukwa cha kusowa kwa photosynthesis algae.M'chigawo ichi, madzi amakumana ndi hypoxia yoopsa;The yaying'ono zachilengedwe bwino m'madzi thupi wosweka, ndi tizilombo zoipa kufalitsa mochuluka (madzi amakhala oyera ndi turbid), amene mosavuta kuchititsa organic nkhani pansi pa dziwe kuwola ndi kupanga hydrogen sulfide ndi nitrite mu anaerobic boma ndi kupanga kudzikundikira, zomwe zingayambitse poizoni ndi kufa kwa shrimp.

3. Kusintha kwa zizindikiro za thupi ndi mankhwala m'madzi am'madzi: kusintha kwa kutentha kwa madzi, kuwonekera, pH mtengo, ammonia nitrogen, nitrite, hydrogen sulfide ndi zizindikiro zina zidzachititsanso kuti prawn itulutse kupsinjika maganizo.

4. Kusintha kwa nthawi ya dzuwa: chifukwa cha kusintha kwa mawu a dzuwa, nyengo yosadziwika bwino, kusiyana kwakukulu kwa kutentha ndi mphepo yosadziwika bwino, kusintha kumatenga nthawi yaitali, zomwe zimapangitsa kuti thupi ndi mankhwala a madzi a shrimp zisinthe kwambiri, zomwe zimayambitsa kupsinjika kwamphamvu kwa prawn kumayambitsa kufalikira kwa ma virus komanso ngalande zazikulu zamadziwe.

5. Kugwiritsa ntchito mankhwala ophera tizilombo, mankhwala a algal monga copper sulfate, zinc sulfate, kapena chlorine okhala ndi mankhwala ophera tizilombo kungayambitse kupsinjika kwamphamvu kwa prawn.

Ⅲ, Kupewa ndi kuchiza kupsinjika maganizo

1. Ubwino wa madzi ndi dothi ziyenera kusinthidwa pafupipafupi kuti madzi asapatutsidwe;

Kuphatikizika kwa gwero la kaboni kumatha kupititsa patsogolo madzi abwino ndikuletsa algae kugwa.

2. Pakakhala mphepo yamphamvu, mvula yamkuntho, mvula yamkuntho, tsiku lamvula, mphepo yakumpoto ndi nyengo ina yoipa, zakudya ziyenera kuwonjezeredwa kumadzi amadzi nthawi kuti zisachitike;

3. Kuchuluka kwa madzi owonjezera sikuyenera kukhala kwakukulu, kawirikawiri pafupifupi 250px ndi yoyenera.Mankhwala oletsa kupsinjika angagwiritsidwe ntchito kuchepetsa kupsinjika;

4. Samalani kwambiri ndi kusintha kwa nyengo pafupipafupi, ndipo gwiritsani ntchito mankhwala oletsa kupsinjika maganizo kuti musinthe khalidwe la madzi panthawi yake.

5. Pambuyo pazipolopolo zambiri, prawns ziyenera kuwonjezeredwa ndi calcium mu nthawi kuti zikhale zolimba zipolopolo mwamsanga ndi kuchepetsa kupsinjika maganizo.