KHOA HOC CdNG N G H £
AIVH HUOIVG CLIA CAC MIJC BO SLIMG BOT TOI (Allium Satlt/um] VA BOT IXIGHE (Curcuma LangaJ OEI\l
KHA IVAIVG SIIMH TRUOMG, l\IAI\IG SUAT V A CHAT LUOIVG THfT CUA EiA Rl LAI THA VUOIXI
Nguyin Trudng TliiS T r ^ CInh Thlug^, D6 Cao Anh^ Nguydn Thi Tiianh^
T6MTAT
Nghien cuu duoc tiln hanh nhSm danh gia anh hudng ciia tdi va nghe din kha nSng sinh trudng va chat lugng thit ga Ri lai tha vudn. Tdng s6 520 ga Ri lai 28 ngay tuoi duoe phan bd hoan toan nglu nhien vao bdn 16: 26 ga/I6 voi 5 lln lap lai. Thiic an cho ga trong nghien cuu la khau phan co sd dugc phdi frdn cho hai giai doan phat trien (4-8 tuan tuoi va 9-15 tuan tudi). Ga a Id ddi chimg (DC) dupc cho an khau phan co sd, frong khi ga d cac 16 thi nghiem duoe an thiic an la khau phin co sd cd bo sung 2% bdt toi d Id 1 (Tl), 0,75% bgt nghd d 16 2 Cr2), 1,5% bot tdi + 0,5% bdt nghe d 16 3 (T3). Ket qua nghidn cmi cho thay ga d Id T3 cd khdi lirong liic ket thiic thi nghiem cao nhat (1.676 g) va tieu tdn thiic an thap nhat (2,81 kgTA/kgTI) frong cac cong thitc thi nghiem cho ca giai doan nghien ciiu (P<0,05). Ty le sdng cua ga d cac Id Tl va T3 d muc 94%
va 97%, cao hon 16 ddi chung (87%) (P<0,05). Hon niia, thit ga dcac Id an thirc an cd bd sung bpt nghe (T2 va T3) CO mau s ^ , do va vang ban so vdi 16 DC. Kh6ng cd su khac nhau ro rang giua cac cong thiic thi nghidm vl cac chi tieu nang suat thit. Cac kit qua ciia nghien cini nay chiing mmh rang bo sung bdt toi vd b6t nghd vao khau phan an cd kha nang cai thidn kha nang sinh trudng, ty Id sdng va chat lugng thit ga Ri lai thS vudn.
TTiikhoA: Bot tdi, bot nghe, gaRilai. kha nSng sinh trudng, chit luong thit
I.DATVAIUDE
Trong nhimg nam gin day, chan nudi g l a Viet Nam ddi mat vdi r i t nhilu loai dieh bdnh nghidm frong va su biln ddng bat thudng cua gil thit ga. D l ddi phd vdi nhimg khd khan nly, nhilu hd chan nudi dang lam dung khang sinh v l chat kich thieh sinh trudng d l giam chi phi thuc an v l ty Id chit d g l (Pham Van Kim v l edng su, 2013). Vide su dung q u i miic khlng sinh frong chan nudi pha vd an toln sinh hgc frong mdi frudng tu nhien va gly anh hudng tidu cue din sue khoe ngudi tidu dimg bdi hidn tupng khang khang smb. De giam thilu cle tie ddng tidu cue nay, ngly cang nhilu ngudi hdu dung quan tam din thue pham an toan, khdng cd du luong khlng sinh va chat kieh thich d l dam bao sue khde cho gia dinh.
Sir dung thao duoc de thay t h i khlng sinh va chat kich thich sinh trudng dang duoe xem la mdt
Khoa Ky thuat - Ndng nghiep, Phan hieu Dai hpc Da Nang tai Kon Tum
• Trung tam Phat men Nong thon mien Trung, Trudng Dai hoc Ndng Lam. Dai hgc Hue
Email. [email protected]
frong nhimg giai phap bin vimg cho chSn nudi ga an toan d Viet Nam v l fren t h i gidi (La Van Kinh, 2017).
Cac nghidn ciiu da chung minh anh hudng tich cue cua elc loai thao dupe din kha nang sinh trudng, chat lupng thit va siic khoe cua vat nudi, frong do c6 tdi va nghd (Dhama va cdng sir, 2015). Tdi chira ho?t chat allicin, cd kha nang cai thidn tang frpng eua ga, giam tieu tdn thuc an, giam toe dp oxy hoi cua thit, tang nang suit tning v l kha nang midn dieh cua gia elm (Dhama v l cdng str, 2015; Milosevic v l cdng sir, 2013). Trong khi do, nghe vdi hoat chat eurcumin cd tie ddng tich cue din lirong an vio v l kha nang sinh trudng, tidu tdn thiic an va ty Id chit d g l (Dhama va cdng su, 2015; Khan v l cdng sir, 2012a). Mgt so nghidn ciiu da xlc dinh ty le phdi frdn frong khau phan an hang ngly cua ga duoc xem II ed anh hudng tieh cue frong khoing 1-3% hot tdi (Khan vl epng su, 2012b; Raeesi va edng su, 2010) v l 0,5-1% hot nghO (Al^Sultan, 2003; Khan va edng su, 2012a).
Tdi v l nghd duoe frdng va su dting phd biln d Viet Nam vdi gil tiilnh kha tiiap, do dd cd dim nang ldn frong vide tiiay t h i khang sinh va chit kich tiiich smh trudng frong chan nudi ga ndi ndng va cle loai vat nudi ndi chung. Tai Viet Nam. tdi va n g h | da va
NONG NGHIEP VA PHAT TRIEN NONG THON - KY 1 - THANG 9/2020
KHOA HOC CONG NGHE
dang dupe str dung frong chan nudi ga a mdt sd frang frai va ndng hd (Nguydn Trudng Thi va Nguydn Thi Thanh, 2018), tuy nhidn ehua cd nghidn ciru nIo xlc dinh edng thiic, lilu lirong, cleh e h i biln va su dung phii hgp cho chan nudi g l thit, dae bidt II ddi vdi elc gidng g l dia phuong. Xuat phat b>
tinh hinh thue tidn dd, nghidn euu da dupc tiln hanh dl danh gil Inh hudng cua eac miic bo sung bdt tdi vl bdt nghd khac nhau din kha nSng smh trudng, nang suit vl chat lugng thit g l Ri lai t h i vudn.
2. flO TUqNG n n r a CUU VA PIMIW PHAP Bd i n TH PttBI/l 2.1. Ddi tupng nghidn ctiu
Nghidn cuu duge thuc hidn frdn 520 g l Ri lai (3/4 Ri X 1/4 Lirong Phtrong) 4 tuin tudi, tir ngly 14/3/2018 - 01/7/2018 tai Td hpp tie Chan nudi ga thao dupc Phong My, xa Phong My, huydn Phong Dien, tinh Thira Thidn - Hul. Bdt tdi vl bdt nghd sir dung frong nghidn ciiu dugc c h l biln bi ngudn cu tdi tuoi feidng tdi tia) va eii nghd tuoi (gidng nghd vang) frdng tai dia phirong. Cu tdi va nghd tuoi duoe rua sach, tiiai lit mdng, rdi dem phoi khd dudi anh sang mat frdi. Sau dd, tdi va nghd lit khd duoe nghiin nhd blng miy nghien bdt chuyen dung va dupe bao quln frong tlii nilon d l sir dung cho el qua trinh nudi ga thi nghidm.
2.2. Bd tri thi nghidm
BSng 1. Bd tri thi nghidm v l ty I^ bdt tdi v l hdt n g h | sii dung cho cic cdng thuc thi nghidm Chi U«u
So ga/16 thi nghiem Sd lan lap lai/16 thi nghidm Tyl« bdt nghe {%) Tyle hot toi (%)
Cong thuc thi nghiem DC
26 5 0 0
T l 26 5 0 2
T2 26 5 0,75
0 T3 26 5 0,5 1,5 DC: Id khdng bd sung hot tdi vi bdt nghe, Tl: bd sung 2% bdt tdi T2: bd sung 0,75% bdt nghd, T3: bd sung 0,5% bdt nghd vi 1,5% bdt tdi
Nghidn ciru dtrpe bd tii nglu nhidn theo khdi, tdng sd 520 ga dupc phin chia nglu nhidn thanh 4 Id 26 ga/ld vdi 5 lln lap lai tuong ling vdi 5 hd chan nudi. Chudng va vudn t h i cho g l thi nghiem d mdi hd dupe ngan thanh 4 d vdi didn tich tuong duong nhau (tdi thilu 3 m^ chuong va 12 m- vudn tiia/ld).
Gl thi nghiem sir dung ciing loai thiic an, nhung dirge bd sung bdt tdi v l bdt nghd vdi ty Id khac nhau.
Cu the, thiic an cua g l d Id doi chiing ^ C ) la khau phin CO sd. Q cac Id thi nghidm, g l duge an thiic an 11 khau phin eo sd bd sung 2% hot tdi d Id 1 CTl), 0,75% bdt nghd d Id 2 Cr2) va 0,5% bdt nghe -t- 1,5%
hot tdi d Id 3 CT3). Bd tri thi nghidm dupc trinh biy eu t h i d bang 1.
Thiie an cho g l frong nghidn cim nly 11 thiie an phdi frdn, su dung cho 2 giai doan sinh tnrdng khlc nhau: 4-8 tuin tudi v l 9-15 tuan tuoi. Cac loai thiic an dimg de phoi frdn gdm bdt ngd, elm gao loai 1 vl thuc an dam dac 36% protem. Thinh phin dinh dudng thuc an cd gia tri dap ling nhu clu dinh dudng cho chan nudi g l tha vudn. Ty Id cle loai nguydn Udu va thinh phan dinh dudng cua thiic an dupe trinh bay d bang 2.
Bang 2. llitic an v l tfalnh phio dinh dudng thiic an ciia g l tiii nghilm
Chi tieu 4-8 tuan tuoi
9-15 tuan tuoi Tyld phdi iron cac loai nguyen lieu B6tng6(%)
Cam gao (%) Thiic an dam dac
(36% CP)
65,0 15,0 20,0
70,0 15,0 15,0 Thanh phan dinh dudng thuc an Nang lirong
(Kcal/kgXA) Protein tho (%) Upid (%) Xo(%)
Khoang tong so (96) 2.995 16,35 5,45 3.39 5,17
3.050 14,82 5,31 3,60 4,41 Lugng thirc an phdi frdn mdi lln dupe tinh toan d l du su dung cho giai doan 7-10 ngly. Bpt ngd, elm gao va thuc an dam dac dupc frdn diu tat cl, tnrde khi dupc chia lam 4 phin tuong ung vdi 4 cdng thiic thi nghiem. Bdt tdi va bdt nghe dupe can vl frdn deu vdi elc phin thiic an nly theo ty Id da xle dinh. Sau dd, mdi phan thitc an se duoc chia lam 5 phin nhd cho 5 hd nudi ga thi nghidm. Ga nghien ciiu dtrpe nudi theo phuong thiie tha vudn, duoc cham sde, nudi dudng vl phdng benh theo quy trinh chan nudi ga an toln smh hoc tidu chuan VietGAHP.
2.3. Chi tidu nghidn ctiu v l phirong phap x l c dinh
2.3.1. Kha ning sinh trudng vi tyld sdng Kha nang sinh tnrdng duoc danh gia thdng qua gia tri trung binh khdi lugng ea thi, luong an vio, va NONG NGHIEP VA PHAT TRIEN NONG THON - KY 1 - THANG 9/2020 107
KHOA HOC C 6 N G N G H t
USu t6n thiic an cua ga trong m6i 16 thi nghiSm. Khoi lupng ca the dupc xac dinh bang each can toan bp ga thi nghiem t ^ cac thoi di^m 4, 8 va 15 taan hidi.
Lupng an vao dupc xac dinh cho trung binh mdi ga thi nghiSm trong cac 16 p hai giai doan (tir 4-8, 9-15 tuan) va tmng binh ca qua trinh phat diSn cua ga.
Tieu ton thiic an duoc tinh toan tir lupng thiic an an vio va tang trong c i a ga thi nghiSm. Ty 16 nuoi sdng duoc xac dinh frung buih cho m6i cong thiic thi nghiem cho ca giai doan nuoi.
2.3.2. Nang suat va chdt lucmg thit
Nghiin ciiu tien hanh chpn nglu nhien 2 ga trong va 2 ga mai tti m6i 16 thi nghiSm i.i mo khao sat danh gia nang suat thit ga. Nang suat thjt dupc lanh gia th6ng qua ly 16 cua cac thanh phan thit (than thit, ty 16 thit dui va ngtic). Miu thit luon dupc l^y tir 4 ga trdng va 4 ga mai da md khao sat (1 ga h-dng va 1 ga mai/cong thiic thi nghi6m) de hdn hanh phan tich chat lupng thit (pH thit, mau sac thit.
It Id mat nupc bao quiin/chd bi6n, kha nang giir mrdc ciia thit, mau sac va dp dai ciia thit). Qua trinh md B5ng 3. c a c chi tieu sinh tni6nK Vii tyld
khao sat va phan tich miu dupc thuc hien tai phong thi nghiem cua Bd mdn Di hTiyen - Gidng, Khoa Chan nudi Thii y, Trudng Dai hpc Ndng Lam, fi»i hpc Hue.
2.4.XiiltsdUdu
Sd lieu nghien ciiu dupc quan ly va xu ly bang phan mem SPSS version 25. Cac phan tich dupc thuc hien de xac dinh gia tri trung binh va dp lech chuan.
Tien hanh phan tich ANOVA de so sanh su sai khac giiia cac c6ng thiic thi nghi6m. Sir sai khac dupc xac dinh la cd y nghia thdng k6 khi P<0,05.
3.KETQUAVA1IUIIUUN
3.1. Anh hucmg ciia cic miic bd sung bdt tdi v i bdt nghd ddn cic k h i nang sinh trudng
Kdt qua danh gia cac kha nang sinh trudng cua ga Ri lai tha vudn cho cac cdng thiic thi nghipm dupc trinh bay d bang 3. Nhin chung, cic chi tidu smh trudng va ty 16 sdng ciia g i Ri lai d cic cdng thiic bd sung bdt nghe vi bpt tdi dupc cii thien ding ke so vdi Id ddi chung, trong dd dat tdt nhat d Id T3.
sdng cua g i d cic cdllg thiic thi nghidm Chi tidu nghidn ciiu
Sd lupng ga thi nghi6m Khdi lupng 4 tuin tudi (g/con) Khdi lupng 8 tuan tudi (g/con) Khdi lupng 15 tuan tudi (g/con) Lupng an vao 4-8 tuan tudi (g/con/ngay) Lupng an vio 9-15 tuan tudi (g/con/ngay) Lupng an vao 4-15 tudn tudi (g/con/ngay) Tieu tdn thiic an 4-8 tuan hidi (kg TA/kg TT) Tieu tdn thiic an 9-15 hian tudi (kg TA/kg TT) Tidu tdn thirc an 4-15 taan tudi ((kg TA/kg T D T y l e sdng (%)
DC 104 273 727 1.541"
40.3"
60,7 62.6"
2,66 3,47"
3,18"
87"
T l 104 274 756 1.635"''
40,5"
60,8 63,4"
2,53 3,25 2,99' 94»
T2 104 273 735 1.595"'
38,6' 57,8 60,4' 2,50 3,17' 2,93' 92*
T3 104 272 760 1.676'
38,8' 58,8 61,8 2,39 3,23' 2,81' 97'
P
0,768 0,202 0,048 0,143 0,122 0,032 0,095 0,014 0,030 0,028
^''-'^ the hidn su khac nhau giua cacgia ditrdn cimg dong co y nghia thdngke (P<0,Q5) Ket q u i d bing 3 cho thay, khdi lupng g i d cac
Id thi nghiem cd bd sung bdt toi vi hot nghe (Tl, T2 v i T3) cd xu huong cao hon Id ddi chiing d tat ca cac giai doai phit tridn. Trong dd, khdi lupng ga dat cao nhat 6 Id T3. Khdi lupng g i thi nghidm tai thdi didm 15 hiin hiPi ciia cic Id T3, T2, Tl v i DC lan lupt Ii 1,676; 1,595; 1.635 va 1,541 g/con, su sai khac giiia Id T3 v i DC d miic cd y nghia thdng kd (P<0,05). Ddi vdi lupng an vio himg binh, ga d Id DC (62,6 g/con/ngiy) v i Id T l (63,4 g/con/ngiy) an nhieu hon Id T2 (60,4 g/con/ngay) h-ong c i giai doan thi
nghiem (P<0,05). Trong khi dd, lupng thiic an ttSu tdn cho mdt kg tang h-ong trung binh ca giai doan thi nghiem p cic Id bd sung bdt tdi va bpt nghe deu thip hpn Id DC (P<0,05). Tieu ton thiic an cho c i giai doan thi nghi6m dat tdt nhat p 16 T3 (2,81 kgTA/kgTT), thap hpn 0,37 kg so vdi Id DC (3,18 kgTA/kgTI). Ty Id sdng cua g i thi nghidm cOng khic nhau ding kd giiia cic Id, trong dd dat cao nhat d Id T3 vi thap nhit d Id DC (P<0,05). Ty Id sdng ciia cic Id T3, T2, T l vi DC tai thdi diem kdt thiic thi nghiem lan lupt li 97, 92.94 va S7'»,.
NONG NGHIEP VA PHAT TRIEN NONG T H 6 N - KY 1 - THANG 9/2020
KHOA HOC CONG NGHl Cle chi tidu sinh trudng cua ga Ri lai d Id DC
trong nghidn ciiu nly phu hgp vdi k i t qua cua elc nghidn ciiu h-udc day. Khdi lugaig ca t h i trung binh etia g l thi nghidm cao hon g l Ri thuin chung (1,016 g) vl kem hon g l Ri lai 1/2 (1,479 g) tai thdi dilm 11 tuan tuoi frong nghidn cuu cua Hd Xuan Tung vl Phan Xuin Hao (2010). Anh hudng cua vide bd sung toi vl nghd din k h i nang tang trgng, lugng an vao v l tidu tdn thiic an trong nghidn ciiu nly ed xu hudng phii hgp vdi kit qua cua nhilu nghidn ciiu da thuc hidn frdn thi gidi. Theo Milosevic va cdng su (2013);
Raeesi vl cdng sir (2010), bd sung 1,5% vl 3% bdt tdi frong khau phan an llm tang khdi lugng co thi, lirong an vio va ty Id sdng sdt cua g l , ddng thdi lam giim tidu tdn thiie an. Tuong tu, vide bo sung bdt nghe d miic 0,5% v l 1% lam giam lugng thiic an tidu tdn eho mdt don vi sin pham (Khan va edng su, 2012a; Payam va edng su, 2016).
Theo Chi vl edng sir (1982); Newall va cdng su (1996), selenium, alhcin, eurcumin v l nhieu boat chat la cac axit amm v l khang sinh tu nhidn tir tdi va nghd cd thi II nhin td cd Inh hudng tich cue din siic
de khlng vl kha nang sinh trudng cua g l . Cle boat chat nly cd tie dung nSng cao kha nSng tidu hoa vl chuyen hoa lipid vl dudng frong thiie an din din tang hidu qui chuyin hoi thiic an v l tang khdi lugng CO the (Raeesi va cdng su, 2010). Ngoli ra, elc hoat chat khlng sinh vdi dac tinh diet khuan cdng cd t h i da gdp phin phdng vl tri mdt sd b$nh thdng thtrdng d gl, va lam giam ty le hao hut din. Bdn canh cac tic ddng tieh cue, vide bo sung tdi va nghg a miic khdng thieh hgp cd thi tic dgng tidu cue din kha nang Sn vio ciia vat nudi do anh hudng den tinh ngon midng (Dhama va cdng su, 2015; Khan vl cdng sir, 2010b).
Day ed t h i la ly do din den giam lugng an vao cua g l a cle Id cd bo sung thao duge trong thi nghidm nly, dac bidt II cle Id ed bo sung bdt nghd.
3.2. Anh hudng dia cle miic bd sung bOt tdi v l bdt nghd din nSng suit thit
Nang suit thit g l d elc Id thi nghidm duoc trinh biy a bang 4. Nhin ehung, cac chi tidu vl nang suit va thinh phan dinh dudng khdng ed su khlc bidt dang k l giira cle miie bo sung bdt tdi vl bdt nghd khac nhau so vdt Id ddi chiing.
Chi tieu Sd lupng ga md lihao sit Khdi lupng sdng (g/con) Tyld than thit («) Tyld thit ludn vadui(%)
DC (Mean±SD)
4 1.531±95 66,6±3,6 27,8±2,5
T l (Mean±SD)
4 1.598±107
64,4±3,8 29,3±2,0
T2 (Mean+SD)
4 1.5941156
65,2±2,0 27,8+2,6
T3 (Mean±SD)
4 1.6961126
65,2+2,7 27,710,9 Mean: gii tri trung binh, SD: do lech chuan
Kit qua mo khio sit 16 ga thi nghiem cd khdi lugng cho thay, ty Id than thit eua g l dao ddng tu 64,4% - 66,6%, ty Id thit ludn vl thit dui bi 27,7% - 29,3%. Cle ehi hdu nang suit thit khdng cd su khlc bidt rd ring giira elc Id thi nghiem. Kit qua v l ty Id than thit, ly Id thit lirdn vl dui cua g l Ri lai trong nghien eiiu nly tirong duong vdi g l Ri (67% va 30%) (H6 Xuan Timg vl Phan Xuan Hao, 2010), thap hon g l chuydn thit AA vdi (75% va 37%) (Lu vl cdng su, 2007), nhung lai cao hon g l Thai dia phuong (63% vl 24%) (Kayan, 2008). Dilu nay chiing td ring gidng mdi II ylu td anh hudng quylt dinh din din elc chi
ddu nang suit va thinh phin dinh dudng cua thiL Anh hudng ciia vide bo sung bdt tdi va bdt nghd frong khau phin an anh hudng khdng dang k l den nang suit thit frong nghien eiiu nly.
3.3. Anh hudng cua cic miic bd sung bgt tdi v l bgt nghd d i n chit Iirpng thit
Chit luong thit cua ga a eac Id thi nghiem dirge trinh bay d bang 5. Cd the thay pH, ty Id mit nude, do dai va mlu sle thit ed su khac bidt kha rd ring giiia cle Id thi nghidm vl Id ddi ehiing.
Bing 5. c h i t lupng thit ciia ga d cic Id thi chi tieu
pH15 pH24
DC (Mean±SD)
6,05±0,1 5,7510,0
T l (Mean+SD)
6,1310,2 5.71+0,0
nghidm T2 (Meant SD)
6,1110,3 5,7710,1
T3 (Mean±SD)
6,2210,1 5,7910,0 NONG NGHIEP VA PHAT TRIEN NONG THON - KY 1 - THANG 9/2020 109
KHOA HOC CdNG NGHE Mat nude bap quan 24 gid (%)
Mat nude chd bidn 24 gid (%) Bd dai thit (N)
Miu sic thit:
L' a*
b'
2,210,8 24,112,8 17,014,1 59,714,8 1,611,6 7,211,6
3,8+4.1 23,6H),6 17,7+1,6 51,512.9 3,8+1,5 6,211,5
2.810,0 24.1+0,6 18.811,4 _^
55,210,5 4,6+4,3 10,710,5
2,812,3 23.712.8 18,712,1 56,8+3,0 3.313,1 7,310,7 pH cua thit g l giao ddng frong khoang 6,05-6,22
tai thdi diem 15 phiit sau khi mo v l 5,71-5,79 tai thdi dilm 24 gid sau khi md, pH thit ga tai thdi dilm 15 phiit sau khi mo ed xu hirdng eao ban a cle Id cd bd sung tdi vl nghd. Gil fri pH cua thit g l Ri frong nghien ciiu nly nlm frong khoang dam bio chit lugng thit gia elm tdt (pH>5,7) va phu hop vdi kit qua nghidn ciiu eiia Hd Xuin Tiing vl Phan Xuan Hao (2010) frdn g l Ri v l Ri lai (5,77-6,25) va nghidn ctiu cua Nguydn Duy Hoan (2013) fren g l Ri va g l Ac (5,9-6,0). Ty Id mat nude khdng cd su khac nhau ding k l giu^ cle cdng thiic thi nghidm. Ty Id mat nude bao quan v l mit nude c h l biln tai thdi dilm 24 gid cua cle g l d cle edng thiie thi nghidm frong nghidn ciiu nly lan lugt nlm frong khoing 2,2%-3,8%
v l 23,6%-24,l%. Kit qua nly tuong duong vdi cic ddng Broiler 2,17%-5,13% vl 21,5%-25,15% (Mahaffey v l cgng su, 2006); g l Ri, Ri lai vl g l Thli dia phtrong lai 3,54% - 5,97% v l 16,38% - 23,75% (Ho Xuan Titng va Phan Xuan Hao, 2010; Kayan vl cdng su, 2008).
Do dai thit ciia ga Ri lai frong nghien ciiu nly nam frong khoang 1,70-1,88 kg vl ed xu hirdng ldn hon a elc Id bd sung tdi vl nghd, tuy nhidn su sai khlc II khdng rd rang. Kit qui nay tuong tu g l Ri lai (1,73 kg) (Hd Xuan Tiing va Phan Xuan Hlo, 2010), cao hon so vdi thit g l AA (1,17-1,55 kg) (Lu vl cdng su, 2007), nhung lai thip hon g l Ri thuan chiing (2,15 kg) (Ho Xuan Tung vl Phan Xuan Hao, 2010) v l g l dia phirong ciia Thai Lan (4,09 kg)
(Wattanachant va cdng su, 2004). Mlu sle thit ed su khlc bidt k h i rd rang giira cac Id thi nghidm. Thit ga a Id ddi chiing (59,7) sing (L*) hon so vdi cae Id ed bo sung tdi vl nghd (51,5-56,8). Ngugc lai, ga d d c Id ed bd sung tdi vl nghd (3,3-4,6) lai cd thit do (a*) hon ding k l so vdi Id ddi chiing (1.6). Trong khi dd. Id T2 (bd sung nghd) cd thit ving (10,7) hom kha nhilu so vdi cle Id edn lai (6,2-7,3). O elc nghidn eiru khie, g l Ri lai ed cle chi sd mlu sang, do vl ving lan lugt II 49,62, 9,39,14,19 (Hd Xuin Tung vl Phan Xuan Hao, 2010), frong khi, elc ehi sd d g l lai Mia - Hd - Luong
Phugng II 54,05, 15,86, 9,00 (Biii Hiru Doin va Hoing Thanh, 2011).
Kit qua nghien ciiu nly da ehirng td vide bd sung tdi vl nghd d cle miic 2% tdi (Tl), 0,75% nghd Cr2). hoae 0,5% nghd v l 1,5% tdi (TS) frong khau phin cd anh hudng den cle chi tidu chat lugng thit, dac bidt la man sle thit. Tuy nhidn, anh hudng cua vide bd sung hot tdi vl nghd din chat lugng thit la khdng ldn so vdi Inh hudng eua gidng. Ddi vdi mlu sic thit, viec bd sung tdi vl nghd da llm eho thit dgm mlu ban, dae biet II mlu dd. Bd sung nghe vdi miic 0,75% ed the llm thit g l frd ndn ving ban. Nhimg kit qui nly phu hgp vdi cle nguydn tic di truyin cua cle tinh frang chat lugng thit (Biii Hiru Doan vl cgng su, 2011). Mae dti ehua cd nhilu nghidn ciiu xac dinh Inh hudng ciia tdi vl nghd din chat lugng vl mlu sic cua thit gl, tuy nhidn vide bo sung tdi vl nghd cd t h i tie ddng thdng qua hai nguydn nhan. Thii nhat, cac hoat chat ed mlu frong cac loai thIo dugc nly, dac bidt II cd t h i da duoc luu giii frong thinh phan eua thit tam thdi llm thay ddi mlu sic eua thit.
Nguydn nhan thii hai lidn quan din su anh hirdng cua cac hoat chat chdng oxy h o i frong tdi vl nghd- Theo Kanani va cdng su (2017), cle loai thao duge bao gdm tdi vl nghe cd chua nhilu boat chit chdng oxy hoi, vl cle hoat chat nly da gdp phin lam thay dot qua trinh tdng hop va frao doi chat do dd gay ed t h i gay Inh hudng din cle ehi tidu chat lugng thit Cac hoat chat nly eung gay cln frd qui trinh oxy hoa lipid, giln tilp gdp phin llm cham qui trinh nhat mau eua thit.
4. KET LUAN
Bo sung bdt tdi v l bdt nghe vdi ty Id phii hgp frong khau phan an ed t h i nang eao k h i nang sinh trudng vl eii thien chit lugng thit cua g l Ri lai tha vudn. Bd sung 1,5% hot tdi va 0.5% bdt nghe tang khdi lugng ga liic kit thiie thi nghidm (1.676 g), giam tieu tdn thiic an (2,81 kg), tang ty Id sdng (97%) va nang cao chat lugng thit
NONG NGHIEP VA PHAT TRIEN NONG THON - KY 1 - THANG 9/2020
KHOA HOC C O N G NGHE
LHCAMON
Nghien cdu niy duoc tai tra kinh phi bdi Chuong trinh Phat trien nguon nhin Iuc Uc - Vidt Nam (Aus4skills) cua Chinh phu Uc.
TAI l i u THAM KHAO
1. ALSultan S. I (2003). The effect ol Curcuma longa (turmeric) on overaU performance of broiler chickens. International Journal of Poultry Science, 2(5), 351-353.
2. Biii Hiiu Doan, Hoang Thanh (2011). Kha ning san xui't vi chit luong thit ciia td hop gi lai kmh td' 3 gidng Mia - ffd - Luong Phuang. Tap ehi Khoa hgc v l Phit frien, 9 (6), 941 - 947.
3(^ Biii Huu Doin, Nguydn Thi Mai, Nguyin Thanh Son, Nguydn Huy Dat (2011). Cac chi tidu dung trong nghien ciiu chan nudi gia cim. N h i xuat ban Ndng nghidp. HI Ndi.
4. Chi, M. S, Koh. E. T, Steward. J. T (1982).
Effects ol garhc on hpid metabolism in rats fed cholesterol or lard. Journal of Nufrition, 112, 241 - 248.
5. Dhama. K, Mani. S, Samad. H, Karthik. K, Tiwari. R, Khan. R U, Alagawany. M, Farag. M. R, Alam. G. M, Laudadio. V, Tufarelli. V (2015).
Multiple Benedclal Applications and Modes of Action of fferbs m Poultry Health and Production.
Intemabonal Journal of Pharmacology, 11(3), 152- 176.
6. HdXuanTimg, Phan Xuan Hao (2010). A^^^
sui't va chat luong thit ciia ga Rl vi con lai vdi ga Luong PhuQng. Tap chi Khoa hgc Cdng nghe Chan nudi, 22,13-19.
7. Kanani. P. B, Daneshyar. M, Aliakbarlu. J, Hamian. F (2017). Effect of dietary turmeric and cinnamon powders on meat quahty and hpid peroxidation of broiler chicken under heat sti-ess condition. Vet Res Forum, 8(2), 163 -169.
8. Kayan. J. S, Wick. M (2008). Carcass and meat characteristics of male chickens between Thai indigenous compaivd with improved layer breeds andtiielrcrossbred Areh. Tiez, 51(3), 283 - 294.
9. Khan. R. U, Naz. S, Javdani. M, Nikousefat.
Z, Selvaggi. M, TufareUi. V, Laudadio. V (2012a). The use of turmeric (Curcuma longa) In poultry diets.
Worid's Poulfry Science Journal, 68, 97 -103.
10. Khan. R. U, Nikousefat. Z, Tufarelli. V, Naz.
S, Javdani. M, Laudadio. V (2012b). Garhc (Album sativum) supplementation In poultry diets: effect on production and physiology. World's Poultry Journal, 68,417424.
11. La Van Kinh (2017). Su dung che pham tiiao duoc trong chin nudi Ion vi gi. Nhi xuat ban Ndng nghidp. Ha Ndi.
12. Lu, L X, Luo. G, Ji. B, Uu. B, Yu. S. X (2007).
Effect of manganese supplementation and soure on carcass traits, meat quahty and lipid oxidation in broilers. Journal of Animal Science, 85(3), 812 - 822.
13. Lu. Q, Wen. J, Zhang. H (2007). Effect of Chroruc Heat Exposure on Fat Deposition and Meat Quahty in Two Genetic Types of Chicken. Poutry Science, 86,1059-1064.
14. Mehaffey. J. M, Pradhan. S. P, MeuHenet. J.
F, Emmert. J. L, McKee. S. R, Owens. C. M (2006).
Meat Quahty Evaluation of Minimally Aged Broiler Breast Fillets from Five Commercial Genetic Strains.
Poultry Science, 85, 902 - 908.
15. Milosevic. N, Stanacev. V, Peric. L, Stojcic. M.
D, Veljic. M (2013). Effects of different levels of garlic powder in the diet on production parameters and slaughter traits of broiler chickens. European Poultry Science, 77(4), 254 - 259.
16. Newall. C. A, Anderson. L. A, Philhpson. J. D (1996). Herbal medicines: a guide for health-care professionals. Pharmaceutical Press. London.
17. Nguydn Duy Hoan (2013). Nghien cuu mdt sd chi tieu danh gii chat luong thit ga Pi vi gi Ac nudi lai Thii Nguydn. Tap chi Khoa hgc va Cdng nghd, 62(13), 111-115.
18. Nguydn Trudng Thi, Nguydn Thi Thanh (2018). 7mA hinh su dung thao duac tiong chin nudi tren thd' gidi vi tai Viet Nam. Hdi thao khoa hoc Qudc gia v l Phat tnin kinh t l xa hdi viing Tay Nguydn, Kon Tum.
19. Payam. B. K, Mohsen. D, Ramm. N (2016).
Effects ofCirmamon (Cinnamomum zeylanicum) and Turmeric (Curcuma longa) Powders on Performance, Enzyme Activity, and Blood Parameters of Broiler Chickens Under Heat Stress.
Poult SeiJ, 4,47-53.
20. Pham Van Kim, Degand. G, Douny.
C P i e r r e t G, Delahaut P,Vu Dinh Tdn, Granier.
N 6 N G NGHIEP VA PHAT TRIEN NONG THON - KY 1 - THANG 9/2020 H I
KHOA HOC C O N O NGHi
B, Scippp. M. L (2013). Prehmmary Evaluation of Performance and Carcass Charactenstics in Broiler Antimicrobial Residue Levels Ul Marketed Pork and Chickens, bitemahonal Journal of Animal and
Chicken Meat in the Red River Delta Region of Veterinary Sciences, 4(8), 1223-1229.
Vietiiam. Food and PubUc Health, 3(6), 267 - 276. 22. Wattanachant S, Benjakul. S, Ledward. D. A 21. Raeesi. M, Aliabad. S. A, Roofchaee. A, (2004). Composition, Color and Texture of Thai Shahneh. A. Z, Pirali. S (2010). Effect of Periodically Indigenous and Broiler Chicken Muscles. Ppulhy Use of Garhc (Allium sativum) Powder on Science, 83,123 -128.
EFFECTS OF DIETARy SUPPLEMENTATION OF GARUC (affimsaffrani) AND TURMERIC (Cumima longa) POWDER ON GROWTH PERFORMANCE AND MEAT QUALITY OF CROSS-BRED RI BROILERS
Nguyen Truong Thi, Tran Canh Thang, Do Cap Anh, Nguyen Tlii Thanh Simunaiy
This study was conducted to Evaluate the effects of garlic and turmenc on the growth performance and meat quality of crossbred Ri broilers. A total of 520 crossbred Ri broilers at 28-day old were randomly assigned into four groups of 24 birds each with five replicates. Birds in control group were fed with basal mixture diet for two periods (4-8 weelc. and 9-15 weelt). In the diets for three treatment groups, basal diet was added garlic and turmeric powder at the level of 2% garlic powder in treatment 1 CTl), 0.75% turmeric powder in treaUnent 2 Cr2),and 1.5%garlicpowder+ 0.5% turmeric powder in Ueatment 3 (T3). The results showed that buds m T3 (1,676 g) had the highest body weight, and lowest in feed coversion ratio (2.81 Itg feed intake/Iig weight gain) among groups for whole expenment period (P<0.05). The survival rate of bird was sigmicandy higher in Tl (94%) and T3 (97%) rather than that of the control (87%) (P<0.05). Meat colour of broilers in treatment groups added turmuric powder Cr2 and T3) tend to be lower in L (light) index, while higher in a* (red) and b* (yellow) indexes than m the control group. There was no significant difference between groups in meat productivity. These results confirmed that dietary supplementation of garlic and turmenc powder can improve the growth performance and meat quality of crossbred Ri broilers, in which diets combining 1.5% of garlic powder and 0.5% of turmeric powder was the most effective in this experiment.
Keywords: Garlic, tumeric, Ri broilers, gro wth perfonnance, meat quahty.
Ngufti phto bifn: PGS.TS. NguySn Van Diic Ngay nh|ln biii: 17/01/2020
Ng4y thang qua phin bif n: 18/02/2020 Ng4y duy$t dang: 25/02/2020
