Nuôi gà ri lai cải tiến theo phương thức an toàn sinh học

^ NGHm CUtr KHOA HQC

^i (107°20' -108°30') ^ bdc vinh Bac bd.

Ddi vdi ngu tmdng khai thdc cua ludi rd I ldp cdi

tigM thdi gian khai thdc tii thdng 4 ddn dau thdng 9

dm lich (mua gid tdy nam), thdi gian nay cd cd xu

hudng di cu vdo viing cita sdng, viing gdn bd de tim

thiic dn nhu cd thu be, ngit trii... do dd, dai tga do

khai thdc ndn tdp tmng tur cud'i tuydn long cho ddn

giiia tuydn khoi (24 hai ly - 35 hdi ly).

Trdn ca sd phuong thirc khai thdc ngu ddn dang

dp dung ddng thdi dd dam bdo tinh hieu qua ciing

nhu dem gidn hda cdc thao tdc khai thdc giup ngu ddn

dd tidp can vd khdng bd ngd, nhdm nghidn cim de

xudt cdc ky thudt khai thdc phii hgp. Trong dd, thdi

diem dua tdu ra khoi dugc cdn cii vdo ngdy sinh con

nude de tinh mdc vd cdng 3 ngdy tidp theo. Ridng

thdng 2 va thdng 8 cd 3 dgt sinh con nude, do vdy,

thdi didm xud't phdt se cdng 2 ngdy tiep theo. KM

ddn ngu tmdng, cdng tdc tha ludi phai ddm bdo thd

chain ngang dugc dudng di chuyen eua cd. Xem xdt

hudng ddng chdy vd hudng gid, td'c do cua gid vd ciia

nude de chgn man tha ludi vd hudng tha cho phii hgp

sao cho ludi khdng bi vudng vao chdn vit tdu. Trong

qua trinh thu ludi vd bdt cd, cd thd vira thu ludi vira

bat cd ndu cd ddng it vd ddng rai rac sud't chieu ddi

vdng ludi hoac thu ludi dudi nude, bat cd sau ndu cd

nhieu vd gd khdng kip, Mc ndy vdn tidp tuc gd ciing

liic vdi thu ludi ddng thdi cdn chii y vd xem xdt vung

ddng ed tap trung vd tinh trang cd liic bdt ldm cdn cii

de didu chinh hoac dua ra cdc phuemg dn didu chinh

ky thudt khai thdc thieh hgp d lan ddnh bdt sau.

Bdo quan sdn pham trdn tau la mdt khdu rat quan

trgng, nd quyd't dinh ddn gia tri cua san phdm vd

doanh thu cua tdu. Bd mdu ludi rd cdi tidn cd khd

nang ddnh bat dugc nhidu chung loai ddi tugng khai

thdc cd gid tri kinh td cao. Mat khdc, mdi loai cd

hdm lugng chd't dinh dudng khdc nhau. Bdn caiih dd,

do ludi rd cai tid'n danh bdt theo con nude, thdi gian

ddnh bdt khd ddi (7 ddn 8 ngdy) trdn mot chuydn

Men. Vi vdy, nhdm nghidn ciiu dd xud't quy trinh xir

ly vd bdo quan sdn phdm trdn tdu khai thdc phii hgp

vdi cdc cdng doan: cd, muc sau khi ddnh bdt ldn ->•

loai bd tap chat ->• phdn loai ->• rita sach bdng nude

Men -* xd'p cd bdo qudn ->• cham sdc vd xit ly su cd ->•

bdc dd, vdn chuyen.

Khai thdc ludi rd chidm mot ty Id Idn trong ca cdu

nghd nghidp khai thdc hdi sdn tai thdnh phd Hdi

Phdng (40,17%), sdn lugng khai thdc hdng nam tii

ddi tdu ludi rd cung chidm ty Id ldn. Cd the ndi, vdi

nhimg dd xud't khoa hgc, thuc tidn va mang tinh khd

thi cao vide dp dung dd tdi vdo thuc tidn sd giiip tid't

kidm ehi phi sdn xud't, tang ndng suat vd Mdu qud

khai thac cho nghd ludi rd d Hdi Phong./.

THANH THCIY

NUOI 6A RI LAI CAI TIEN

THEO PHI/ONG THifC AN TOAN SINH HOC

Chan nudi ndi chung, chan nudi gd ndi ridng

trong nhitng ndm gan ddy d Hai Phdng phdt

trien khd manh vd todn didn, trong dd ddc

Mdt chu trgng vdo phdt trien cdc loai hinh chdn nudi

ga gia trai, trang trai quy md vita vd tucmg dd'i ldn.

De phuc vu cho muc tidu nay, cac cdp, cdc ngdnh cd

lidn quan ciia thanh phd, dac biet la cdc dem vi trong

ngdnh ndng nghidp da lien tue khuyen cdo vd dua

vdo xdy dung nhieu md hinh chan nudi cd dp dung

cdc hinh thufc chan nudi tidn tien va con gid'ng mdi

cho nang sud't, chd't lugng, hieu qud kinh tdcao, ddm

bdo an toan dich benh. Ngudn con gidng khd da

dang, chu ydu Id cdc gid'ng gd nhdp ngoai vd cdc con

lai cua chiing. Dac biet, nam 2007, Cdng ty CP

gid'ng gia cdm Luemg Hud (Hdi Phdng) cho lai tao

thdnh cdng td hdp gd ri lai 3 mdu\6/8 ri + 1/8 Sasso

+ 1/8 Luang Phugng). Budc ddu td hgp gd lai nay

dugc ngudi tidu dung ua chudng vd dang dugc nudi

khd thanh cdng tai mdt sd hd ndng dan d cac huydn

trdn dia ban thdnh phd.

Thdng tin khoa hgc cdng nghe vd mdi trudng sd5 - 2010 21