Hiệu quả mô hình nuôi cá rô phi đơn tính bán thâm canh ở thành phố Hà Tĩnh - Hà Linh

HIEU QUA MO HINH NUOI CA RO PHI DOfN TINH<br /> BAN THAM CANH Of THANH PHO HA TINH<br /> HA LINH<br /> e giup eho ngudi san Ong Vd Td LTnh, td 8 phUdng ehl giup ngUdi dan khai thdc<br /> <br /> D xud't khai thdc tiem ndng,<br /> l(?i the nudi trdng thuy<br /> san, chuyen ddi cd cau vat nudi,<br /> Tran Phu, hd tham gia md hinh<br /> trao ddi kinh nghiem vdi chung<br /> tdi: "De thdnh cdng md hinh can<br /> dupe tiem nang, ipi the nudi<br /> trdng thuy san ma edn tgo ra<br /> bude chuyen bien tdt cho chuyen<br /> tang hieu qua kinh te tren ddn vi iga chpn eon gidng dam bao djch cd cau dd'i tupng nudi trdng<br /> eanh tdc, nam 2010 Trung tdm chat lupng (kich cd ddng deu, thuy san, giai quyet dUpc cdng<br /> dng dgng KHKT Thanh phd Hd khdng bj nhilm benh, ddc biet an viee 1dm cho ngudi san xua't<br /> TTnh xay dgng md hinh nudi ed ty le due phai dat td 97% trd khi dien tich san xud't d thdnh<br /> rd phi ddn tinh bdn tham eanh len), thudng xuyen theo ddi PH phd Hd TTnh ngdy cdng bj thu<br /> tgi phudng Tran Phu, 8.000 eon nude vd dp trong cua nude trong hep, hon the nda ddy Id mdt<br /> ed rd phi ddn tinh ddng GIFT dd ao, ed the sd dung thdc an cdng phUdng thdc dd'i tUdng vd<br /> dupe tha d dien tieh 2000 m^ (4 nghiep ngay td dau vg hoac phUdng thdc nudi hdp ly trong<br /> sdo), kich cd 3-4 em/eon (150 thdc an tg ehe nau chin nham cac hd ndng dan hien nay vd<br /> con/kg), mat dp tha 5-S con/m^. hgn che' sg that thodt vd giam d thdng qua md hinh cung cap<br /> Qua 4 thdng dUa vdo nudi nhilm mdi trudng; ed 10 ngdy cdc loai hdng hod ed chat lupng<br /> cho thay gidng ca rd phi ndy de cho cd nhjn an 1 ngay de kich phgc vg nhu cau tieu dung tren<br /> nudi, phdt trie'n td't, chdng ehju thich tinh them an cua ea vd dja bdn thdnh phd vd cdc vung<br /> td't vdi mdi trudng nudi bdn tham tang eUdng sd dgng thdc dn tg phg can./.<br /> canh, it djch benh, ty le nudi nhien de giam gid thdnh". Ong<br /> sdng dgt tren 70%, chuyen ddi LTnh edn cho biet<br /> thdc an td't, d l tieu thg, ddng deu them khi tha cd<br /> cao (350-400g/eon), san lUpng nen thd them d<br /> thu dupe gan 2,3 tan ed thUdng ed ldc nhd de an<br /> pham. Neu bdn budn vdi gid bdt 1 phan ed rd<br /> 25.000,d/kg (logi 0,6-0,7 kg/con), phi de ra, vd dn<br /> 20.000,d/kg (logi 0,3-0,4 kg/eon), nhdng thdc an dU<br /> sau khi trd chi phi eho lai tren 20 thda cua ed rd<br /> trieu ddng, tang hdn 1,5 lan so phi.<br /> vdi nudi cdc gid'ng thuy san khac Nhdng thdnh<br /> vd nudi theo phUdng thdc quang cdng budc dau<br /> canh. Ddc biet ddy Id mpt trong md hinh nudi ed<br /> nhdng gidng ed cd thjt trang, rd phi ddn tinh<br /> thdm ngon, phu hpp vdi thj hieu bdn thdm canh d<br /> tieu dung cua ngudi ddn d Thdnh Thu ho^ch ca rd phi.<br /> thdnh phd khdng<br /> hd Hd TTnh. Anh; P.V<br /> <br /> <br /> <br /> <br /> Ik %h im, im t(M, im tot, mk(fmtcdtkmcmi^^<br /> BUI MINH HIEN<br /> <br /> <br /> <br /> C so KHOfl HOC S CONG NGHC Hfl TiNH ( 2 | )<br />