Potaziyamu diformate sichikhudza kukula kwa shrimp, kupulumuka

potassium diformate m'madzi

Potaziyamu diformate(PDF) ndi mchere wosakanikirana womwe umagwiritsidwa ntchito ngati chowonjezera chosapha maantibayotiki polimbikitsa kukula kwa ziweto.Komabe, maphunziro ochepa kwambiri alembedwa mu zamoyo zam'madzi, ndipo mphamvu zake zimatsutsana.

Kafukufuku wam'mbuyomu pa nsomba za Atlantic adawonetsa kuti zakudya zomwe zimakhala ndi ufa wa nsomba zomwe zimagwiritsidwa ntchito ndi 1.4v PDF zimathandizira kudyetsa bwino komanso kukula.Zotsatira zotengera kukula kwa hybrid tilapia zikuwonetsanso kuti kuwonjezeredwa kwa 0.2 peresenti ya PDF muzakudya zoyesedwa kumakulitsa kukula ndi kugwirira ntchito bwino kwa chakudya, ndikuchepetsa matenda a bakiteriya.

Mosiyana ndi izi, kafukufuku wa ana osakanizidwa a tilapia adawonetsa kuti kuphatikizika kwa PDF mpaka 1.2 peresenti yazakudya sikunawonetse kusintha kwakukula, ngakhale kuletsa kwambiri mabakiteriya am'matumbo.Kutengera chidziwitso chochepa chomwe chilipo, mphamvu ya PDF pakuchita nsomba ikuwoneka kuti imasiyana malinga ndi mitundu, gawo la moyo, milingo yowonjezera ya PDF, kupanga mayeso ndi zikhalidwe.

Mapangidwe oyesera

adachita kafukufuku wa kakulidwe ku Oceanic Institute ku Hawaii, USA, kuti awone momwe PDF imakhudzira kukula ndi kusagaya kwa nsomba zoyera za Pacific zomwe zimalimidwa m'madzi opanda madzi.Idathandizidwa ndi dipatimenti ya zaulimi ya US Department of Agriculture Agricultural Research Service komanso kudzera mu mgwirizano wogwirizana ndi University of Alaska Fairbanks.

Nsomba zoyera za Pacific Pacific (Litopenaeus vannamei) adakulitsidwa m'nyumba yoyenda-modutsa m'madzi oyera okhala ndi mchere wa 31 ppt ndi kutentha kwa 25 ° C.Anadyetsedwa zakudya zisanu ndi chimodzi zoyesedwa ndi mapuloteni 35 peresenti ndi 6 peresenti ya lipid yokhala ndi PDF pa 0, 0.3, 0.6, 1.2 kapena 1.5 peresenti.

Pa magalamu 100 aliwonse, zakudya za basal zidapangidwa kuti zikhale ndi 30.0 magalamu a soya chakudya, 15.0 magalamu a pollock, 6.0 magalamu a squid, 2.0 magalamu a menhaden mafuta, 2.0 magalamu a soya lecithin, 33.8 magalamu a tirigu wonse, 1.0 gram 1.2 chromium oxide zosakaniza (kuphatikizapo mchere ndi mavitamini).Pazakudya zilizonse, matanki anayi a 52-L adasungidwa pa 12 shrimp / tank.Ndi 0.84-gram kulemera kwa thupi koyamba, shrimp inkadyetsedwa pamanja kanayi tsiku lililonse kuti iwoneke bwino kwa masabata asanu ndi atatu.

Pakuyesa kwa digestibility, ma shrimp 120 okhala ndi zolemera za 9 mpaka 10 magalamu adapangidwa mu tanki iliyonse ya 18, 550-L yokhala ndi akasinja atatu / chithandizo chazakudya.Chromium oxide idagwiritsidwa ntchito ngati cholembera chamkati poyesa kuchuluka kwa digestibility coefficient.

Zotsatira

Kulemera kwa mlungu uliwonse kwa shrimp kunachokera ku 0,6 mpaka 0.8 magalamu ndipo kunkakonda kuwonjezereka kwa mankhwala ndi 1.2 ndi 1.5 peresenti ya zakudya za PDF, koma sizinali zosiyana kwambiri (P> 0.05) zosiyana pakati pa zakudya.Kupulumuka kwa shrimp kunali 97 peresenti kapena kupitilira apo pakuyesa kukula.

Feed-conversion ratios (FCRs) anali ofanana pazakudya zokhala ndi 0.3 ndi 0.6 peresenti PDF, ndipo onse anali otsika kuposa FCR pazakudya za 1.2 peresenti ya PDF (P <0.05) Komabe, ma FCR owongolera, 1.2 ndi 1.5 peresenti PDF zakudya zinali zofanana (P> 0.05).

Nkhumba zodyetsera zakudya za 1.2 peresenti zinali ndi digestibility yochepa (P <0.05) chifukwa cha zinthu zowuma, mapuloteni ndi mphamvu zochulukirapo kuposa zomwe shrimp imadyetsa zakudya zina (mkuyu 2).Kugaya kwawo kwa lipids m'zakudya, komabe, sikunakhudzidwe (P> 0.05) ndi ma PDF.

Malingaliro

Kafukufukuyu adawonetsa kuti kuphatikizika kwa PDF mpaka 1.5 peresenti muzakudya sikunakhudze kukula ndi kupulumuka kwa shrimp zomwe zimamera m'madzi oyera.Zomwe anapezazi zinali zofanana ndi zomwe zinapezedwa m'mbuyomo za hybrid juvenile tilapia, koma zosiyana ndi zotsatira zomwe zinapezeka mu kafukufuku wa salmon Atlantic ndi kukula kwa hybrid tilapia.

Zotsatira za zakudya za PDF pa FCR ndi digestibility zidawonetsa kudalira kwa mlingo mu kafukufukuyu.N'zotheka kuti FCR yapamwamba ya 1.2 peresenti ya zakudya za PDF inali chifukwa cha kuchepa kwa mapuloteni, zinthu zowuma komanso mphamvu zowonjezera pazakudya.Pali chidziwitso chochepa kwambiri chokhudza zotsatira za PDF pakukula kwazakudya zamoyo zam'madzi.

Zotsatira za phunziroli zinali zosiyana ndi za lipoti lapitalo lomwe linanena kuti kuwonjezera kwa PDF ku nsomba za nsomba panthawi yosungiramo chakudya musanadye chakudya chinawonjezera kuchepa kwa mapuloteni.Zothandiza zosiyanasiyana za zakudya za PDF zomwe zimapezeka m'maphunziro apano ndi am'mbuyomu zitha kukhala chifukwa cha mikhalidwe yosiyanasiyana, monga mitundu yoyesera, machitidwe azikhalidwe, kapangidwe kazakudya kapena zoyeserera zina.Chifukwa chenicheni cha kusiyana kumeneku sichinali chodziwika bwino ndipo zimafuna kufufuza kwina.

 


Nthawi yotumiza: Oct-18-2021