DINH DUONG V.\ THUC AN CHAN NUOI
H A M Ll/ONG CA, P TOI VV TRONG KHAU PHAN LC ^^
LANDRACE NUOI CON CAP GIONG ONG BA
U Van Kinh''. La Tlii Tlianh Huyen', Dodn Vinh', Phgm Nggc Tlido' vd Dodn Plnrong Tliiiy^
\ ' g a \ n h a n bai bao: 12/03/2019 - \ ' g a \ ' n h a n bai p h a n bien: 29/03/2019 . \ g a v bai b a o dugc c h a p n h a n d a n g : 14/04/2019
T O M T A T
Myc tieu cua nghien cini nhSm xac dinh ham lupng Ca, P thich hop trong khan phan Km n^ai nuoi con cap giong ong ba, Thi nghiem d u g c rieh hanh tren 80 Km nai Landrace a liia 3, d o n g deu ve kha nang sinh san va d u e phoi giong, Thiet ke thi nghi&m theo p h u o n g p h a p h o a n loan ngau nhien (CRD) vao 4 nghi?m thiic vai cac m u c Ca, P long so va P h u u ich n h u sau: 0,7; 0,54 va 0,27%
6 NTl; 0,8; 0,62 va 0,31% 6 \ T 2 ; 0,9; 0,69 va 0.35% 6 NT3,1,0; 0,77 va 0,38% 6 NT4 voi 20 lan lgp lai Ket qua nghien cuu cho thay rang ham lugng loi u u Can xi, phot pho long so, pho't pho hij-u ich trong khau phan Ign nai nuoi con giong ong ba tuong iing la 0,9; 0,69 va 0,35% vdi ty I? Ca/P long so la 1,3. Lgn nai an khau phan nay da cai tiiien 5,5% so con con song, lang 11% khoi lugng CO the Ign con luc 28 ngay tuoi. No cung gnip nit ngSn thoi gian d p n g dye tro lai 3 ngay, lang ly I?
phoi gio'ng d^u thai va giam ty I? lpn bj benh chan mong.
T u khoa; Ca, P long so, P hint ich, Ign ndi nuoi con, Landrace, lgn con, klioi lugng ca the, phot giong, chdn. nidng.
ABSTRACT
The optimal level of Ca, P in diets for GP Landrace lactating sows The objecrive of the project was to determine the oprimal level of Ca, P in diet for GP lactating sows. The study was conducted on 80 GP Landrace lactating sows at the third parity of iso- reproducrivily and iso-semens from the same boar. The design was complete randomized design of 4 levels of Calcium, total phosphorus and available phosphorus as 0-7, 0,54 a n d 0.27% in NTl, 0.8, 0,62 and 0.31% in NT2, 0.9, 0.69 and 0.35% in NTS, LO, 0.77 and 0.38% in NT4- The resulls showed that the oprimal content of Ca, total P and available P was 0-9%; 0.69% and 0.35% with Ca/P ratio was 1,3 in GP lactating sows. This diet increased by 5,5% of the live b o m nursery piglets and by n % o f the body weight f o r p i g s a t 2 8 d a y s o f age. This diet also reduced time getting back lo estrous 3 days, increased sucessful insermination and decreased inclusion of leg and claw deseases.
Key words,- Ca; total P; available P; lactating sows; Landrace, piglet; body weight, insermination, leg and claw.
I.DATVANDi
K h o a n g ehat d o n g vai tro k h o n g t h e thie'u t r o n g d o i s o n g v a i n u o i , d a c biel l r o n g d i e u kien c h a n n u o i t a p hoing l u o n s u d u n g t h u e a n c o n g n g h i e p . C a n x i (Ca) va p h o t p h o (P) la CO vai tro q u a n t r g n g c h o viee to'i i n i h o a s u ' Phan Vien Chan nuoi \ a m Bo
• Dai hoc Nong Lam Bac Giang
• Tac gia lien h?- GSTS La Van Kinh, Pho Vien truong Vien Chan nuoi, Kiem Giam doc Phan Vien Chan nuoi Nam Bo D|a chi Kp Hiep Thdng. P. Binh Thang. DT An. Binh Duong Email kinh lavan^iasMi \"n
p h a t trien va s i n h s a n . C a d u p e g h i n h a n vcri cac chiic n a n g t r a o d o i cha't q u a n t r p n g va lien q u a n ehat c h e de'n c h u y e n h o a P, d i e u h o a su ha'p Ihu V i t a m i n D, h o r m o n e tuye'n c a n g i a p (PTH) va C a l c i t o n i n (Barrilli va elv, 2017), Ca d i n g t h a m gia v a o cae c h u c n a n g n g o a i bao n h u d o n g m a u , d u y tri va o n d i n h m a n g te'bao, l i n h loan v^n cau t r u e c u a x u e m g va rang, chiic n a n g t h a n va h o ha'p ( G u y t o n va Hall, 2006).
N g o a i e h u y e n h o a ATP, Ca con a n h h u i •-,•• d e h s u CO CO, d a c biet la t r o n g q u a t r i n h sinh d e , lien
DINH DUONG VA THU'C AN CHAN NUOI
quan tn^c tiep deh thoi gian de va so luvng 'cm con dupe sinh ra do canxi mau lam anh huong de'n CO bop ngi mgc tu cung. Hon nija, khoang cha't nay ciing co lrong sira lgn nai, la mgt trong nhung khoang chat quan trgng nha't dupc tie't ra trong sira. Peo (1991) chi ra rang su ean bang dinh ducmg Ca va P eho tat ca eac nhom lgrn phy thugc vao vi^e cung ca'p day du timg nguyen to 6 dang co san lrong khau phan, ty 1^ thich hpp Clia Ca va P trong khau phan va sy hi^n dien ciia vitamin D. Ty le Ca/P lon da lam giam SM' ha'p thg P, dan de'n giam su phal trien va voi hoa xuang (Reinhart va Mahan, 1986; Hall va ctv, 1991; De Wilde va Jourquin, 1992; Eeckhout va ctv, 1995). Ty I? nay it quan trpng hem ne'u khau phan chua lugng P d u thua (Prince va elv, 1984; Hall va ctv, 1991).
Theo nhieu cong bo thi ly le giira Ca/P dao dgng lrong khoang 1-2 nhu PIC 2016 khuye'n cao ly I? 1-1,5 trong khi Genesus 2019 thi ly le nay la 2,08. Trong thai ky mang thai, nhu cau sinh ly doi voi Ca va P tang ty 1§ thu?n voi nhu eau tang trucmg cua thai nhi va dat deh miie lol da trong thai ky ci.ioi (Mahan va ctv, 2009).
Trong thoi ky cho con bii, nliu cau con bi anh huong bai mii'c dg san xua't sii'a ciia lpn nai.
Thong thuong, cac nhu cau do'i voi Ca va P dua tren miic cho an l,8-2,0kg TA/ngay trong thoi gian mang tliai va 5-6kg TA/ngay trong thdi ky cho con bii, Ne'u lgn nai dugc cho an it hem 1,8 kg Ihiie an trong tlioi ky mang tliai, khau phan phai du'pc xay dung eo ham lugng Ca va P on dinh de dap iing nhu cau hang ngay. Ne'u lupng thlic an an vao aia lpn nai cao do ean duy tri diem so tinh trang eo the, eo lien quan nliieu hon de'n nhu eau protein va nang lupng, thi muc Ca va P trong khau phan co the dupc dieu chinh giam xud'ng. Lupng Ihiic an an \'ao Clia lpn nai dang cho con bii co the bi giam boi nhi^t dg moi Irucmg eao. Trong truong hpp nay, do tong san lupng sii'a khong giam, che' dp clio con bii phai dupc xay dyng de dap iing nhu cau hang ngay ciia Ca va P. Viec cung cap da\' dii lu'png Ca va P trong khau phain 6 lgn
nai Ilia dau het sue quan trpng \'a quan trpng hem so voi lgn nai trucmg thanh (Giesemann va elv, 1998) vi nhu eau tang truong xuong ciia lpn nai trong giai doan nay. Theo EHenne va
ctv (2000), voi 6 tren 11 lon eon, nai ean 12-17gcanxi/ngay. Nai cao san co the san xua't 16-18 lil siia/ngay se can khoang 22g canxi. Dau hieu thie'u Ca hoae P tuong tu nhu Ihieu vitamin D.
Chiing bao gom giam su tang tru'ong va kho- ang hoa xuemg kem, dan de'n eoi xuemg o lpn eon va benh xuong khop 6 lpn gia. Mgt van de Clia lpn nai thie'u Ca hoae P eo the xay ra la te liel chan sau. Va'n de nay xay ra thuong xuyen nha't vao cuoi, hoac ngay sau khi ke't thue qua trinh cho con bii 6 lpn nai san xua'l siia cao.
Miie Ca va P du thiia co the lam giam hi?u sua't cua lgn (Reinhart va Mahan, 1986; Hall va etv, 1991). Ca du thira khong ehi lam giam vi^c sir dung P ma con lam tang yeu cau ciia lgn doi voi kem (Zn) khi eo phylale (Oberleas, 1983).
O Viet Nam ehiing toi ehua tha'y co cac nghien ciiu ve Can xi. Phot pho trong kha'u phan eho Icm nai thuan, Chinh vi vay, nghien a i u nay nham muc lieu xac dinh ham lugng Ca, P thich hpp trong khau phan cua nai cap gio'ng ong ba.
2. VAT LIEU VA PHUUNG PHAP
Lgn sir dung cho thi nghiem (TN) la lgn nai Landrace sinh san cap giong ong ba a liia de 3, dong deu ve due phoi va kha nang sinh san 6 Ilia truoc. O giai doan chuan bi TN, 95 Lpn nai Landrace ong ba dupe ehgn dong deu ve kha nang sinh san ciia 2 liia 1 va 2 sau do dupc pho'i giong boi 01 due va eho an cimg mpl loai thlic an nhu nhau 6 giai doan mang thai, Tru'oe khi de 05 ngay, 80 lpn nai dupc ehpn de sir dung cho TN, dupc phan bo' ngau nhien vao 4 nghiem Ihiic (NT) voi 20 Ian lap lai/NT. Ty le Ca/P long so' dupc duy tri on dinh la 1,3 con ham lupng Ca va P trong khau phan Oi the nhu sau:
37
D I N H D U O N G VA THU'C A N C H ' VL •!
K h a u p h a n Nguyen li?u va gia tri dinh dircmg
Nguyen hgu
Gia tri dinh duong Clia khau phan
\ K 6 Tam Cam gao loai 1 Cam my Kho dau tuong Mv Bpt ca 60% CP Dauca DCP 17"oP Bpt da Premix Muo'i L-Lysine DL-Methionine L-Threonine L-Trytophan Enzyme heu hoa Pliytate ChoSiii Chloride Tong cgng Gia thanh (d/kg) Nang lui^ng trao doi Protein tho L)'sine tong so Methionine tong so Mt't+C\ s tong so Threonine tong so' Ca P fongso P huTj dung
thlic an ctia nai nuoi con
Gia (d/kg) -6-000 6-200 5-500 4.800 11,000 23.500 18.000 8-500 650 55-000 2.500 33.500 66-000 34,000 300.000
75000 86.000 25,000
Kcal/kg 7o
%
7.7o
% % ,% %
N T l 31,16 30,00 4,29 10,00 17,10 2,00 2,54 0,53 1,09 0,25 0,36 0,22 0,07 0,14 0,05 0,10 0,02 0,08 100 7.882 3-327 16,00 0,99 0,34 0,60 0,74 0,70 0,54 0,27
Ty 1? triir NT 2 29,59 30,00 e.51 7,91 it., 55 2,00 2,09 0,78 1,22 0,25 0,36 0,19 0,07 0,15 0,05 0,10 0,02 0,08 100 7.797 3.300 16,00 0,99 0,35 0,61 0,73 0,80 0,62 0,31
M 30 •- 30.00 12.O0 2,46 17,31 2.00 1,67 1,09 1,32 0,25 0,36 0,17 0,07 0,13 0,05 0,10 0,02 0,08 100 7.822 3.300 16,00 0,99 0,35 0,61 0,73 0,90 0,69 0,35
NT 4 26,50 30,00 18,01
17,39 2,00 2,11 1,27 1,50 0,25 0,36 0,16 0,07 0,13 0,05 0,10 0,02 0,08 100 7.874 3.300 16,00 0,99 0,35 0,61 0,73 1,00 0,77 0,38
7/((Vi gian vd dia diem: Tix 25/06/2018 de'n 10/10/2018 lai Trai lpn Thong Nhat-HTX Chan nuoi heo An loan Tien Phong, Cii Chi, Tp.
HCM.
Chi ticn: Khoi lupng (KL) lgn nai dupc can
truoc khi de 5 ngay va sau khi cai sua 28 ngay;
so con so sinh (SCSSS) va cai sua 28 ngay;
lupng thiic an (TA) thu nhan hang ngay va ehi phi TA; day mo lung (DML) truoe khi de
5 ngay va sau qua trinh nuoi eon 28 ngay; so ngay dgng due (DD) lai; ty I? pho'i gio'ng (PG) dau thai va ty 1? b^nh tat ve chan mong theo thong dung.
Kit ly so liiu. Toan bg so' Heu lhi nghi&m
dupe xir ly bSng ANOVA tren phan mem
Minitab 16.0 va so sanh eac gia In trung binh
vai dg tin cay 95% bang Tukey-Test,
DINH DUCKNG VA THU'C AN CHAN NUOI
3. K£T QUA VA THAO LUAN
Ket qua nghien ciiu 6 bang 1 cho tha'y KL lpn nai truoc khi de 5 ngay giua cac NT tucmg duong nhau (249,7-250,6 kg/eon), trong khi do sv sai khae eo y nghia thong ke 6 KL nai liic eai sua (P<0,05). Khoi lucmg nai liic eai siia eo xu huong tang dan theo su tang dan ciia Ca, P trong khau de'n miie 3 sau do giam nh?: cao nha't la 225,8 kg/con 6 nai ciia NT3 va tha'p nha'l 6 NTl voi 218,5 kg/con, Ke't ejua nay khae vai nghien eii'u eiia Harmon va ctv (1975), lpn nai dupc eho an 0,65% P trgng thai ky cho con bii co KL lue cai siia tha'p hon lpn nai an 0,45% P. Dieu nay co the ly giai rang sau gan 50 nam, lien bg di truyen ve lpn da giiip cai thi^n nang sua't ciia lpn eung nhu KL ciia lpn ten rat nhieu, hon gap doi nen nhu eau B i n g l . Mpt so chi tieu san
Ca, P da tang len- Mtic Ca, P trong khau phan 6 miie 3 va miic 4 da lam giam hao mon ciia lem nai trong giai doan nuoi eon- Ty 1^ hao hyt khoi lupng va DML ciia nai an khau phan co ham Iupng Ca, P 6 NTS (9,6 va 15,6%) va NT4 (10,3 va 16,7%) tha'p han so voi o NTl (12,7 va 25,3%) va NT2 (11,7 va lS.O"o) Ham lupng Ca va P trong khau phan lpn nai nuoi con 6 miic tha'p da lam gia tang h' le lpn me mae b^nh ve chan mong, keo dai so ngay DD tro lai sau cai sua va giam t}' le phoi gio'ng dau thai 6 liia ke' tie'p. Lo lpn nai lhi nghiem an khau phan chita 0,7% Ca; 0,54% P long so' va 0,27% P huu ich eo gap van de \'e chan mong eao hon (25 so voi 0%) va ly le lpn nai PG dau thai 6 liia sau tha'p hon (75 so voi 95%) so vai miic 3 (0,9% Ca; 0,69% P;
0,35% P huu ich).
xuat ctia dan nai thi nghiem Chi tieu
KL n.ii tructc de 5 ngay KL nai Iiic CS 28 ngay So sanh % TL hao hyl KL DML truoc de 5 ngay DML cai siia 28 ngay TL hao hyt do DML So ngay DD tr61^ii So sanh % Ty le PG dau thai l'v 1? mac b^nh CM
Donvi kg kg
% %
mm mm ngay
%
% %
%
N T l 250,3±5,41 218,5'±5,36 100 12,7''±0,35 25,2±0.75 I8,8'-±0,95 25,3''±2,70 7,60"±0,75 100 75,00 25,00
NT2 250,6+5,40 221,2'-^, 17 101 ll,7t'±0,35 25,0+0,73 20,5''±O,95 18,0''±2,49 6,80^1,11 89 85,00 15,00
N T S 249,7 ±4,09 225,8' ±4,03 101 9,6''±0,18 25,4±0,75 21,4^0,68 15,6'^±2,24 4.73''±1,12 89 95,00 0,00
NT 4 250,1 ±3,31 224,3'^±3,]5 102,5 1 0 , 3 ^ 1 6 25.1±0,79 20,9"''+0,79 16,7^1,56 5,27*'+l,29 69 90,00 5,00
P ns
<0,01
<0,01 ns
<0,01
<0,01
<0,01
Cfic gtd tri Mean trong cimg hdng mang cdc cbir cdi khdc nhau thi sai khdc co y ngbia tbong ke P<0,05 Theo Maxon va Malian (1986), lpn nai Ilia
dau va thii' hai trong hai chu ky sinh san lien he'p sir dgng ly 1$ Ca/P la 1,3:1, cung khong tini tha'y sy khac bi^t trong cac thong so lua de. Tuy nhien, chinh eac tac gia nay da phat hi?n ra rang thanli phan xuong, kich thuoe 6 va KL ciia nai co lien quan mat thie't de'n ham lupng Ca CO san trong eo the ciia lpn nai htm la ham lupng Ca dupe bo sung lrong khau phan.
Trong giai do^n cho con bii, nang sua't sua aia lpn nai co lien quan true tie'p de'n vi^e tang trgng ciia lpn con. Voi so'con so sinh 11 con/
6 va KL 1,46-1,48 kg/eon, sau 28 ngay, so con eon so'ng va KL da c6 su eai thien ro 6 NT3 va NT4- Ty le eon so'ng de'n cai siia co xu huang tang dan tuong ling vai cac miie Ca, P tang dan trong khau phan- Ty le cao nha't thupc NT4 vdi 93,3% va thap nhat thupc ve NTl vai 88,1%- Theo nghien cihi cua Komegay va Kile (1983); Komegay va eh- (1985), viec su dung cae miic Ca, P khac nhau eho lon nai da khong tao su khae biet nao ve kieh thuoe liia de, can nang khi sinh cung nhu KL eai siia, Tuang tu, Maxon va Mahan (1986), nghien oiu Ipn nai
DINH D U O N G V.\ THUC ,iN CF "i.H^ -
6 Ilia de thii nhat va thii hai trong hai chu ky sinh san lien tiep sii dung ti,' le Ca/P la 1,3:1 aing khong tim tha'y su khae biet trong thong so lua de. Tuy nhien, chinh cac lac gia nay
Bang 2. Nang suat
da phat hien ra rSng thanh ph, xcror^i" ^'^
thuac va KL cua liia co Hen qur .'-'' '-^'^^ *^^"
lpn nai hem la voi Ca.
sinh san ciia lgrn nai
Chi rieuSo'consosinh KL lgn so sinh So con CS 28 ngay So sanh % KL M con luc CS So sanh % TL so'ng deh CS
Chi tieu TA an vao/giai do^n TA an vao/ngay Tong KLCS So sanh % Gia thiJc 3n So sanh % CP TA/kg CS So sanli %
Donvi con/6 kg/con con/6 kg/con
%
% %
Bang 3 . Don V
kg Kg kg
%
N T l 11,30+0,73 1,48+0,02 9,95^+0,69 100 6.96'y),13
100 88,1
NT 2 11.35+0,67 1,46±0,02 10,20°''±0,62
102,5 7,35'=±0,09
105,6 89,9 Lirgng thiic a n a n vao a i a dan r i NTl
i78,0±4,50 6,36 69,3'=±4,S0
100 d/kg TA 7.759
%
d%
100 20-026
100
NT2 179,9±5,16
6,43 75,0''±4,50
IDS 7718 99,5 18,577
92,8
NT3 n,40±0,68 1,47±0,03 10,55'±0,61 102,5 7,88^^1,06
105,6 92,5 iai thi nghi&m
NTS I81,3±4.76
6,48 83,1'^4,45
108 7.749
99,5 16,964
92,8
\ 1 ' 1 - d i - 1 4C:::0,02 10,50'±0,51
105,5 7,73''±0,09
111 93,3
NT4 180,3±4,89
6,44 81,2"±4,10
117 7,827 100,9 17.435 87
P ns ns
<0,01
<0,01
p ns ns
<^,01
Lupng thiie an an vao giiia cae NT khong CO su khac bi^t co y nghia thong ke, khoang 180 kg/giai doan. Tong KL lpn cai siia c6 sir sai khae eo y nghia thong ke (P<0,05), cao nha't o NT3 va NT4 hrang iing voi 83,1 va 81,2kg, lrong khi do tha'p nha't thuoe NTl vdi 69,3 kg.
Gia thlic an aia NTl va NT4 la 7.759 va 7-827 VND/kg TA cao hon so vdi NT2 va NT3 (7.718 va 7.749 VND/kg TA), Chi phi thiic an cd xu hudng giam dan khi lang miic Ca, P trong khau phan va tang nhe 6 khau phan co ham lupng Ca, P d NT4, Chi phi thiic an ciia 1^3 la thap nha't vdi 16.964 dong/kg eai siia, trong kill do gia eao nha'l thugc ve khau phan co miie Ca, P thap nha'l (NTl) vdi 20.026 dong/
kg cai siia.
4. KET LVAN'
Ham lupng toi uu Can xi, pho't pho tong so, phdt pho huu ieh trong khau phan lpn nai
nuoi eon eap dng ba gio'ng Landrace tucmg Ltng la 0,9; 0,69 va 0,35% vdi ty l# Ca/P tong so la 1,3. Lpn nai an khau phan nay da cai thi?n 5,5% so eon con so'ng, tang 11% khd'i lugng lpn eon liie 28 ngay tud'i. Nd cung giiip nit ngan thdi gian dpng due trd lai 3 ngay, lang ty le pho'i gio'ng dau thai va giam ty l^ lpn bi benh ehan mdng.
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DINH DUONG VA THU'C AN CHAN NUOI
N u i , 77 =13-60
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r e p r o d u c h v e p e r f o r m a n c e of gra\-id gilts fed t w o d i e t a r y p h o s p h o r u s levels for five p a r i t i e s J - A n i m , S a . 57:1463- 70.
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bioavailability a n d homeosta-sis. Pp 145-58 in Nutritional Bioavailabilit}' of Zinc, A m e r i c a n C h e m i - cal Society S y m p o s i u m Series N o 210, G. E. Inglett. ed, Washington, DC: A m e r i c a n Chemical Society
16 P e o E.R-Jn (1991). Calcium in S w i n e Nutrition. West D e s Moines. IA: National Feed I n g r e d i e n t s Association 1 7 P I C (2016), PIC n u t n e n i specifications m a n u a l 18, P r i n c e T.J., VW. H a y s a n d G.L- C r o m w e l l (1984),
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19. R e i n h a r t G.A- a n d D . C M a h a n 0986). Effect of v a n o u s c a l a u m : p h o s p h o r u s rahos at low a n d high dietary p h o s p h o r u s for starter, grov\'er a n d finisher s w i n e J Anim, Sci-, 63.457-66.
A N H Hl/dNG MU'C B O S U N G B Q T N G H E V A O K H A U P H A N
DEN NANG SUAT SINH TRl/ONG CUA VIT XIEM
Nguyin Tbiiy Linh'', Nguyin Tin Dau', Nguyin Vdn Tiing Ldm' vd Nguyen Thi Anh Thu' N g a y n h a n b a i b a o : 11/03/2019 - N g a y n h a n bai p h a n b i e n : 30/03/2019
N g a y b a i b a o d u p e e h a p n h a n d a n g : 14/04/2019 T O M T A T
Nghien ciiu nay n h J m xac d i n h anh h u d n g ciia viec bo s u n g bpt n g h e trong khau p h a n len kha n a n g sinh I r u d n g ciia vit Xiem giai doan 9-12 tuan luoi. Vit Xiem trong thi nghiem d u g c can b a n g trong mai, khoi l u g n g d a u v a o t u o n g d u o n g va ciing dieu kien cham soc nuoi d u o n g , Thi n g h i e m d u g c b d tri theo the thiic h o a n loan n g a u n h i e n vdi 4 n g h i e m Ihiic va 3 ian lap lai- Cac n g h i e m thirc la cac miic d g bo s u n g bpt n g h e trong k h a u p h a n 6 cac miic 0; 0,1; 0,15 va 0,2% bgt nghe- Ket q u a cho tha'y k h a u p h a n bo s u n g vdi miic 0,2% bgt n g h ? trong k h a u p h a n ciia Wt Xiem giai d o a n 9-12 t u a n tuoi ve khoi l u g n g 12 l u a n luoi, t a n g khoi l u g n g va cac t h a n h p h a n than thit deu cao h o n (P<0,05).
TlT k h o a : Vit Xii:m, bgt ngbe, tang kboi hrgng. be so chuyen hoa thirc dn.
A B S T R A C T
Effect of dietary t u r m e r i c p o w d e r l e v e l s o n g r o w t h p e r f o r m a n c e of M u s c o v y d u c k s A s t u d y was conducted lo determine the effects of turmeric p o w d e r levels in diets on the g r o w t h performance of g r o w i n g Muscovy d u c k s from 9 to 12 weeks of age. Birds in each treatment w e r e selected m the same breed, sex, initial weighl and lake care conditions. The experiment was
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