Kết quả mô hình nuôi cá lồng biển ở phường Hải Cảng

,,^ .^<br /> r;et qua me hinh nuci ca icna bien<br /> c^ phifc^na liai €ana<br /> N<br /> am 2010, phudng Hai<br /> Cang TP. Quy Nhdn cd 54<br /> ldng be cua 46 hd nudi,<br /> trong dd ca hdng chiem 70%, ca<br /> mu 16,6%, ca bop 13,4%. Tuy<br /> nhien do ba con nudi thee hinh thOc<br /> truyen thdng, nen tdc dp ca sinh<br /> trudng, phat trien cham, thdi gian<br /> nudi keo dai tO 12 - 14 thang/vu,<br /> tl le sdng tha'p, hieu qua kinh te<br /> khdng cao. •—aww—^^.". J!Z:r^^ I M r l i ii mmk .Kar—-*" "— "^ -^M^T^r"^<br /> <br /> <br /> <br /> Nam 2010 Trung tam Khuyen<br /> ndng - Khuyen ngUtinh Binh Djnh<br /> phdi hpp vdi Tram Khuye'n ndng<br /> thanh phd Quy Nhdn xay dong md<br /> hinh "Nudi ca ldng bien" tai td 46,<br /> khu vUc 9, phudng nay, vdi quy md<br /> 50 m^ldng nudi ca hdng, mat dp<br /> gidng tha: 15 con/m^ ldng. Chu hp Lang be nudi ca long bien Nhdn hai.<br /> la dng Nguyen Van Dien. Sau 8<br /> dinh: gdm day neo, da dan de cd con/750 con), san lOdng dat tren<br /> thang thUc hien (tO thang 3 den<br /> djnh be. 600 kg. Sau khi trO tdng chi phi la<br /> thang 12/2010), md hinh da dat<br /> Ca hdng gid'ng cd kich cd tU 34,8 trieu ddng; bao gdm gidng,<br /> ke't qua rat kha quan.<br /> 10 - 12 cm/con, ddng deu, khde thOc an, thudc phdng benh, vdi<br /> Ldng be nudi dat tai vj tri "Hal va cdng lac dpng, vdl gia ca<br /> manh, mat dp tha 15 con/m^. ThOc<br /> Minh trong" vdi dien tich mat node an la loai ca tap tUPi, dUpc rOa sach thUdng pham 110.000 ddng/kg, Ipi<br /> khu vUc nudi rdng khoang 20.000 m^, bang nUdc ngpt trUdc khi cho an. nhuan mang lai cho chu hp Udc<br /> nen day cat san hd, ngudn node Thdi gian 1 thang dau lUpng eho tinh gan 30 trieu ddng.<br /> trong, ddng chay thoang, em sdng an 10%/ trpng lUdng ca, thdi gian Vdi viec ap dung cac bien phap<br /> gid, dp man dao ddng tha'p tO 31- sau tie'p theo cho an tU 5 - 8%/ ky thuat chat che da giup ca nudi<br /> 33%o moc node khi trieu eao 10 m, trpng lUdng ca va chia lam 2 lan sinh trudng phat trien rat td't, ty le<br /> khi trieu thap 4 m, lou tdc nude nhe che an (sang, chieu), lupng budi<br /> hao hut tha'p 6,7%, kich cd ca tUdng<br /> dam bao du lUpng dxy chd ca sinh sang chiem 60%. Dinh ky bd sung<br /> ddi ddng deu, mau sac dac trung,<br /> trudng, phat trien td't. Khoang each vitaminC -i- men vi sinh sorbitol,<br /> han che dope dich benh, nang sua't<br /> giOa cac be nudi nay den cac be lieu lUdng 5gr/1 kg thOc an de tang<br /> dat 12,024 kg/m^ ldng; He sd tieu<br /> nudi khac tO 2 - 3 m. Ldng be nudi sOc de khang che ca. Dinh ky cc<br /> tdn thUe an 7,7. So vdi vu nudi<br /> gdm 3 phan chinh: Be ndi duac lam rOa ve sinh ldng lodi tO 1 5 - 2 0<br /> ngay/ lan va mdi ldng tree 2 tui vdi nam 2009 chu hd choa lam md<br /> bang cay go ed dp dai tO 6 -10 m.<br /> bet (5kg/tul) de phdng benh che hinh, ap dung nudi theo hinh thOc<br /> Lap phao ndi la cac thung phuy nhua<br /> ca. Ludn thee ddi cac day neo dan truyen thdng thdi gian nudi keo dai<br /> va phao xdp. Long nuoi dUdc cau<br /> ldng be de giO ldng be cd djnh to 12 - 14 thang, ty le ca hao hut<br /> tao bang khung ludi, cd kich thudc<br /> khdng bj va dap. Kiem tra khung nhieu 29,2% (850eon/1.200 con),<br /> 2 X 2 X 3,5 m. Cac ldng nudi dUdc<br /> lodi ldng khdng de rach lOdi lam nang sua't 11,9 kg/m^; he sd tieu<br /> treo cd djnh dudi be gd, khoang<br /> that thoat ca nudi. tdn thOe an 9,2.<br /> each giOa cac ldng nudi la 0,5m,<br /> each mat nUdc 0,3m, each day 0,5 Sau thdi gian nudi hdn 8 thang, Trung tam Khuye'n ndng -<br /> m khi trieu tha'p va 4 gdc cua mdi den ngay 24/11/2010 kiem tra sd Khuyen ngotd chOe, tuyen truyen<br /> ldng nudi cd day treo bao cat nang ca nudi, ca phat trien rat td't, trpng tap hua'n, chuyen giao ky thuat cho<br /> khoang 30 kg/bao de cd djnh cac lopng ca dat tO 550 gr - 800 gr/ hdn 100 lOdt ngOdi dan nudi ca tai<br /> gdc cua ldng nudi. Bo phan cd con, ty le sdng dat 93,3% (700 dja phOdng.n N.N.T<br /> <br /> KHOn HOC<br /> & CONG N G H E<br />