ANH HUONG CUA BO SUNG DAU DAU TUONG VAO THUC AN DEN NANG SUAT
SINH SAN CUA LON NAI NUOI CON GIONG NGOAI TRONG DiEU KIEN MUA HE Pham Sy Tiep', Tran Hue Vien', Hoang Thi Phi Phuong",
Nguyen Thj Huong", Do Thj Ha\ Kieu Thj Hue'
'Phdng Khoa hoc Vien Chdn nudi. 'Trung tdm Nghien cuu Ign Thuy Plurimg.
^Trudng Dgi hgc Ndng Ldm - Dgi hgc Thdi Nguyen.
TOM
TATThi nghiem tien hanh tren 24 lpn nai nuoi con. giong Yorkshire, dupe chia thanh 4 16 (3 16 thi nghiem (TN); I 16 d6i chimg (DC)) dong deu ve gi6ng, tuoi va lua de, moi 16 g6m 6 lpn nai dupe nhot rieng. m6i nai la I lan lap lai. L6 DC: su dting thuc an hon hpp (TAHH) cho lpn nai nu6i con.
CO miic nang lupng 3 100 Kcal/kg, CP la 16% , kh6ng b6 sung dau dau tuong. 0 cac 16 TN 1. TN2.
TN3 ngoai sii' dung TAHH nhu 16 DC con bo sung 3%, 5% va 7% dau dau tuong. Ket qua thi nghiem cho thay b6 sung tir 5-7% dau dau tuong vao thuc an da nang cao kha nang thu nhan thuc an cua Ion nai tii' 4,72 - 4,73 kg TA/nai/ngay, cao hon tu 14,32 - 20,29% so vdi 16 d6i chung kh6ng b6 sung dau. S6 con cai su'a/6 dat tu 9,13 con den 9,51 con; kh6i lupng lpn con cai sua/'6 dat tu 62,08 den 68,00 kg, tang tir 6.53 - 10.15% so vdi 16 DC. Ty le nu6i s6ng cua lpn con bit sua dat til' 90,04 den 93,14%; d cac 16 co bo sung tu 5- 7% dau co ty le nu6i s6ng den cai siia cao hon 16 DC tir 3.07 - 3.32%; ty le lpn con mac benh tieu chay 6 16 TN it hon 16 d6i chirng tir 23.5 - 41,34%. Thdi gian d6ng due trd lai giam dan theo ty le tang ciia chat beo b6 sung, tir 7,07 - 7,86%.
Sir dung khau phan co 5-7% dau dau tuang da lam giam sir hao mon co the lpn nai trong thdi ky tiet sua nudi con tu 12.44 den 14,04%. Chi phi thuc an cho I kg Ion con cai sCia 6 cac 16 b6 sung tir 5-7% dau dau tuong deu thap hon so vdi 16 DC tu 3,22 den 4,14 % .
Tir khoa: Ddu ddu tirong. ndng sudt sinh san, lgn ndi nudi con DAT VAN DE
Viec nghien ciru bd sung chat beo (dau, md ddng, tlurc vat) cho lpn nai chira, nai nudi con Irong dieu kidi thdi tid qua ndng (>30"C) hoac qua lanh (<12°C) - cac gidi ban can tren va can dudi ciia stress nbid - la rat can thiet va dupe cac nha chan nudi lpn cdng nghiep tren the gidi h d sire quan tam. Theo kd qua nghien ciru ctia nhieu tac gia cho thay viec bd sung chat beo vao trong khau phan da lain tang tinh ngon inidig va giam ty le mac benh tieu chay cho lgn con.
GoihI-J (2000); Wayne Shingleton (2005) da thi nghidn bd sung chat beo cho lgn nai chira va nai nudi con tai Hoa Ky, kd qiui cho thay:
-I- Ddi vdi lgn nai mang thai: giai doan 100- 1 14 ngay. bd sung chat beo vdi mirc 5% trong khau phan an cho ket qua: khdi lirgng lgn con 21 ngay tudi tang tir 5.1 len 5.3 kg/con ; ty le nudi song den 21 ngay tang tir 80-90%; ham
'Tel: 0912 130.444
lugng chat beo trong te bao lgn con tang tir 2,04% len 2,43%; bam lugng chat beo trong sua me tang tir 5,5%) len 7,7%o va ham lugng Glycogen trong co' Ign con tang tii' 187nig/g len 202 mg/g, kha nang chdng dd vdi stress nbid miia he ciia lgn con tang rd rd-
-(- Ddi vdi lgn nai nudi con: Khi bd sung nhieu ngudn chat beo khac nhau (nhu dau dau tuong, dau cam, dau dira, dau ca....) vao tbirc an d mirc trung binh 10%, ket qua cho thay lpn nai trong thdi gian nudi con cd chat lupng sua tdt hon, ham lugng md sua tang 9%o; khdi lugng lpn con cai sua tang 6,3%; ty le hao hut ciia lgn nai giam 40% so vdi lgn nai khdng bd sung chat beo vao khau phan trong giai doan nudi.
Nhu vay, bd sung chat beo vao thirc an cho Ipn nai nudi con trong dieu kidi miia he ki bet Stic can thiet nham nang cao nang suat chan nudi lpn. Tuy nhidi, de bd sung chat beo cd hieu qua can cd nhung nghien ciru de tim ra ty le bd sung thich hgp. Xuat phat tir thuc te tren, chimg tdi trien khai nghien cuu anh
89
Pham Sy Tiep vd cs Tap chi KHOA HOC & CONG NGHE 76(l4):89-95
lurang cua \iec bd sung dau dau tuong vao tbirc an d6n nang suat sinh san lgn nai nudi con giong ngoai trong dieu kidi miia be DOI TUONG, V A T L I E U V A PHUONG P H A P NGHIEN CUU
Doi tugng nghien cuu
-I- Lpn nai nudi con gidng ngoai (Yorkshire) + Lpn con bit sira, gidng ngoai tir 7 - 28 ngay tudi - Dja diem nghien ciru: Trung tam nghien cu'u lpn Thuy Phuong, hgp tac xa Trung Chau, huyen Dan Phuong - Ha Ndi.
- Thdi gian nghidi ciru: 2/2007 - 12/2008.
Noi dung nghien ciru:
Nghien ciru hidi qua cua bd sung dau dau tuong vao tbiic an den nang suat sinh san ciia lgn nai nudi con gidng Yorkshire trong dieu kidi miia he.
Phuong phap nghien ciiu:
Thi nghidn dugc tien hanh tren 24 lpn nai nudi con. gidng Yorkshire, dupe chia thanh 4 Id (3 Id thi nghiem; 1 Id ddi chirng) ddng deu ve gidng. tudi va lira de. mdi Id gdm 6 lgn nai dupe nhdt rieng trong 6 ciii cho lgn nai de va nudi con. mdi nai la 1 lan lap lai. Ld DC: sir dung TAHH cho lgn nai nudi con, cd mirc nang lupng 3100 Kcal/kg. CP la 16%, khdng bd sung dau dau tuong. Ld TNI: TAHH cho lgn nai nudi con nhu Id DC, bd sung 3% dau dau tuong. Ld TN2: TAHH cho lgn nai nudi con nbir Id DC. bd suna 5% dau dau tuang.
Ld TN3: TAHH cho Ign nai nudi con nhu 16 DC, bd sung 7% d^u dau tuong
Thirc dn cho lan thi nghiem: La tluic an hon hgp hoan chinh dugc phdi che tir nhirng nguyen lieu sin cd tai dja phuong, gdm ngo.
bdt sSn, cam gao, bdt ca, khd dau dau tuong.
DCP, NaCl, premix.... Gia tri dinh dudng ciia TAHH dap ung day dii theo Tieu chuan Viet nam TCVN 1547-1994 cho Ipn nai nudi con giong ngoai. DSu dau tuang dugc bd sung cimg liic phoi trdn thue an. Sii' dung binh phun cao ap dk phun dau dau tuong vao thirc an, sau dd trdn deu bang may trdn tai trai lpn giong Thom Xoa thudc CT TNHH Khanh Khue, xa Chuong Duong, huydi Thudng Tin.
Ha Ndi. Nguyen lieu thirc an dugc phan tich thanh phan hda hgc trudc khi phdi trdn. Sau khi phdi trdn, thirc an lai dugc lay mau va giii phan tich thanh phin HH tai Phdng phan tich TA va SPCN - Vien Chan nudi Quoc gia.
* Cdc chi lieu theo ddi:
- Sd con de nudi/d; khdi lugng lpn con so sinli/d;
So con cai suaJo: khdi lugng cai sira/d;
- Kha nang thu nhan thuc an/ngay (kg) - Ham lupng m a trong sua lgn me d ngay 7 va 28 sau khi de (%).
- Ty le mac benh, ty le c h d ciia lgn con bii siia.
- Chi phi thuc an/kg lgn con cai sua.
- Ty le hao but khdi lugng ciia lgn ine.
Bang 1. Anh hudng cua b6 sung dau dau tuong den kha thu nhan thuc an va ham lupng md sua ciia Ipn nai Noi dung
Ty le dau dau tuong bo sung 1%) n Iconi
Lugng TA thu nhan/nai/ngay (kg) Ham luong mo trong stra Icrn me:
- 7 nga\ sau de (% trong I 'CK) - 28 ngay sau de (% trong I 'CK)
Ghi chii: Trong cimg hdng ngang. cdc gid tri cd sd mii Id nhung chu cdi khde nhau thi su sai klidc cd y nglua thdng kelP<0.05)
L6DC 0 6 4.17"
3,40 3,21
L6TN1 3.00
6 4.33"
3.45 3.44
Lon nai ngoai L6TN2
5.00 6 4.72"
3.42 3.45
Lo TN3 7.00
6 4.73"
3.46 3.44
SEM
0.11
0.33 0.51
* Phuang phdp theo doi cdc chi tieu:
- Chpn thdi gian TN tii' dau thang 5 den h d thang 10 la nhung thang cd nhung ngay ndng lien tuc de tien hanh tridi khai theo ddi TN.
- can lgn vao budi sang, trudc khi cho an.
-Cac chi tieu ve tang trpng, tieu tdn TA, dp hao mdn ciia lgn me, phan tich TA....theo phuong phap thdng thudng trong cac TN ve chan nudi.
- Cac sd lieu thu thap dirge xir ly thdng ke sinh hpc trdi chuong trinh Minitab version 12.2 KET QUA vA THAO LUAN
Anh hudng ciia bo sung dau dau tucng den kha nang thu nhan thii'c an va ham luong md sua ciia ign nai
Sd lieu d bang 1 cho thay: Kha nang thu nhan khdi lupng thiic an ctia lpn nai d Id DC;
TNI; TN2 va TN3 theo thir tu la 4,17; 4,33;
4.72 va 4,73 kg. Trong dd. Id TN2 va TN3 d mirc cao hgn: 4,72 va 4,73 kg TA/nai/ngay.
Ddi vdi Id ddi chirng, khdng bd sung dau, kha nang thu nhan thirc an giam dang ke, chi dat mirc 3,77 kg/nai/ngay; Id TNI bd sung 5%
dau dau tuong cung chi d iiiirc 4,17kg. Su sai khac ciia Id ddi cluing va Id TNI so vdi cac d TN 2 va TN3 la rd r d vdi P<0,05. Tuy nhien, d Id TN2, TN 3 lai cd sir sai khac khdng rd rd. Nhu vay, kha nang thu nhan thirc an cua lgn ngoai khi bd sung tir 5 - 7% dau dau tuong vao khau phan da lam tang dang ke kha
Bang 2. Anh hudng b6 sung dau dau
nang thu nhan thirc an cua lgn nai so vdi khdng bd sung va bd sung d mirc thap (3%).
Sir sai khac nay cd y nghia thdng ke (P<0,05).
ME thu nhan dugc hang ngay ciia lgn nai d Id 1 so vdi Id 3 va 4 cung cd sir sai khac rd ret (P<0,05), lgn d Id 3 va Id 4 cd kha nang thu nhan ME cao hon (14160 va 14190 kcal ME/nai/ngay) va cudi cimg thap nhat la Id 1 ddi chii'ng (11310 kcal ME/nai/ngay). Mac dii xet ve trj sd tuyet ddi, kha nang thu nhan nang lu'png/ngay ciia Id TN3 cao ban TNI. nhung ve thdng ke sinh hpc thi sir sai khac nay lai khdng cd y nghTa (P>0,05).
So sanh ham lugng md sua ciia lpn nai d cac Id DC va TN cho thay khdng cd su sai khac rd ret giua cac Id DC va TN ve ham lugng md trong siia Ign nai sau khi de 7 va 28 ngay.
Anh hudng cua bo sung dau dau tuong den kha nang sinh trudng ciia Ign con
Sd lieu bang 2 cho thay:
- Sd con cai su'a/d cd chieu hudng tang dan tir Id ddi chirng den Id TN 1; TN 2 va TN 3 tire la cd xu hudng tang dan khi tang mirc bd sung dau an, ci,i the; Id ddi cluing la 9,13. Id TN 1 la 9,27; TN2 9,43 va TN 3 la 9,51. Tuy nhien, giira cac Id TN 1 va TN 2, sd con cai sira khdng cd sir sai khac rd rd. Sir sai khac rd r d chi the hien khi so sanh sd con cai sira giua Id TN 2 va TN 3 (bd sung 5% va 7% dki dau tuong ) vdi Id TN 1 (bd sung 3%) va Id DC (khdng bd sung dau) vdi P<0,05.
tuong den sinh trudng cua Ipn con bu sua
'..' - No! dung
Ty Ic diiu dau tuang bo sung (%) n (con)
So lon con dc nuoi /6 (con) S6 Ion con cai siriv'o Icon) Kl, so .sinh /con (kg) KI. cai sira/6 (kg) KI, cai sCra'con (kg)
Tl Ic nuoi song den cai sira (%) Tang Kt. ciia Ion con (g,'con7ngdy)
L6DC 0 6 10.17 9.13"
1,30 ' 62.08"
6,80"
90.04"
196.43"
L6TN1 3,00
6 10.17 9.27""
1.32 65.91""
7.11"
90.88"
206.79""
Lon nai ngoai LoTN2
5,00 6 10.83 9.43"
1.30 67.14"
7.12"
92.90""
207.86""
L 6 T N 3 7,00
6 10,50 9.51"
1.31 68.00"
7.15"
93.14"
208.57"
SEM
6 0.82 0.12 0.015 2.50 0.16 1,32 6.06 Ghi chii: Trong cimg hdng ngang. cdc gld tri cd sd mu Id nhung chu cdi khde nhau ihi su sai khde cd y nglua thdng ke rd(P^0.05).
91
Pham Sy Tiep vd cs Tap chi KHOA HOC & CONG NGHE 76(l4):89-95 - Khdi lugng cai sira/d va khdi lugng cai
sira/con ciing cd xu budng tang len khi tang mirc bd sung dau an trong khau phan. theo dd.
Id DC cd khdi lupng cai sua/d va tren con theo thir tu la 62.08 kg va 6.80 kg; Id TN 1 la 65.91 \a 7.11; Id TN 2 la 67.14 kg va 7.12 kg;
Id TN' 3 la 68.00 kg va 7.15 kg. Tuy nhidi.
khi bd sung dau dau tuang vdi mirc 5% trd len khdi Itrpiig lgn con cai sira cd xu lurdng khdng tang. K d qua tren chi tieu tang khdi lirpng/ngav cua Ipn con bii sua cung cd chieu budng tiro'ng tu nhu vav khi so sanh giira Id bd sung dau dau tuo'ng cho lgn me tir 5-7%
trong khau phan.
- Tv le nudi sdng cua lpn con bii sira dat tir 90.04 den 93.14%o. trong dd. cac Id cd bd sung tir 5 - 7% dau cd ty le nudi sdng den cai sira cao hon Id DC va Id TN 1 tu 3,07 - 3.32%.
Dieu do cho thay. bd sung dau dau tiro'ng vao khau phan cho lpn nai nudi con \di mirc tii' 5% trd len cd tac dung rd r d den t\ le nudi sdng den cai sira cua lgn con.
.4nh hudng cua bd sung dau dau tuong den dgng due trd lai ciia Ign nai
Bang 3. Anh huong cua b6 sung dau dau tuong thiic an den thdi gian dong due trd lai
cua lon nai nu6i con
L6 theo doi
Lo DC Lo TN 1 Lo TN 2 Lo TN 3
Thoi gian
,\
7.36"
6.90""
5.89"
5.43"
dong d liiga}!
uc tro' lai
,S7„l/
0,24
Ghi chii: Theo hdng dgc. nhirng gid trj cd nhirng sd mil Id nhirng chir cdi klidc nhau thi cd su sai khac thdng ke ro ret (P 0.05) .
Thdi gian ddng due trd lai la mot chi tieu quan trpng de danh gia nang suat sinh san ciia lgn nai. Trong thi nghiem ctia chimg tdi, mac dll tv' le phdi gidng ciia lgn nai ngoai d ca 4 Id deu dat 100% va thdi gian ddng due trd lai cua lgn nai ngoai d Id DC so vdi Id TNI la khdng cd su sai khac rd ret, nhung thdi gian ddng due lai sau cai sua ciia lgn nai d Id DC so vdi Id TN2 va Id TN3 cd sir sai khac rd ret (P<0.05) va lan lupt d Id DC, TNI, TN 2 va
Id TN3 la 7.36; 6.90; 5.89 va 5.439 ngay trong dd Id DC khdng bd sung dau dau tuong cd thdi gian ddng due trd lai dai hon cac 16 TN 2 va TN 3 tir 7,07 - 7.86%o. Su sai khac nay la rd ret vdi P<0.05 (bang 3).
Anh hudng cua bd sung dau dau tuong den su hao mdn co' the ciia lgn nai
Ty le hao hut ciia lgn me trong thdi ky nuoi con cd anh hudng Idn den nang suat sinh san ciia lgn me d nhung lira de sau: lgn me cd t) le hao hut sau thai gian nudi con qua Idn thi thdi gian hdi phuc keo dai. anh huong tdi sir phat trien cua bao thai trong giai doan mang thai va ngugc lai. Ign me cd ty le bao hut thap thi cd kha nang hdi pluic nhanh va kha nang nudi thai tdt. Vi vay. viec lam giam ty le hao hut ciia lpn me rat cd y nghia. Ket qua theo ddi anil lurdng ciia bd sung dau dau tuong vao khau phan tliiic an den sir hao mdn ca the cua lgn nai nudi con gidng ngoai trong dieu kien miia he dugc trinh bay d bang 4. Ket qua bang 4 cho tha>', khi tien hanh thi nghiem.
chimg tdi kra chgn nhu'ng lgn me tuong doi ddng deu ve khdi lugng. Sau khi de 24 gid lgn nai d Id ddi chirng cd khdi lugng trung binh la 224,85 kg; trong dd Id TN 1 la 225,13 kg; Id TN2: 224,75kg va Id TN3 la 223,54 kg.
Sau thai gian nudi con la 28 ngay, khdi lirpng lgn nai khi cai sua ctia ca lgn nai ngoai \a nai lai deu cd sir giam siit: Id DC 190.38 kg: 16 TNI va TN 2 lAn lupl la 192,13; 193,20^^ va 195,12. Ty le bao but ciia Ign nai d 4 Id theo thu-tula: 15,76; 14,66; 14,06; 12,71.
Bang 4. Anh hudng ciia b6 sung dau dau tuong den su hao mon co' the ciia lan nai
Lo theo doi L6DC
Lo TN 1 L 6 T N 2 Lo TN 3
KL sau de 24h(kg)
226 225.13 224.75 223,54
K L sau cai sua (kg)
190.38 192.13 193.2 195,12
% hao hut
15,^6 14,66 14.04 12,71
So sanh khdi lugng ca the trudc va sau khi cai sua ciia nai ngoai cho thay. doi vdi lpn ngoai, sir dung khau phan cd bd sung tir 5- 7% dau dau tuang deu cd tac dung rat tot trong viec lain giam su hao mdn ca the lpn
nai trong thdi ky tiet sira nudi con tir 12.71 ddi 14.66%.
Anh hudng ciia bd sung dau dau tuo'ng den ty le nhiem benh tieu chay d' Ign con bii sira De danh gia anh hudng ciia viec bd sung dau dau tuang d cac mirc khac nhau trong khau phan thuc an cua Ign nai nudi con den tinh hinh sire khoe va ty le nhiem benh dudng rudt cua lpn con bii sua. chimg tdi da theo ddi tinh hinh nhiem bdih va ty le sdng cua lpn con a tat ca cac id. Ket qua dupe trinh bay d bang 5.
Sd lidi d bang 5 cho thay, tat ca lpn con d cac Id deu mac bdih ve tieu chay ve miia he vdi ty le mac benh tir 17.46 -30.00%. So lpn con mac benh d Id ddi cluing tuong ddi cao. trong dd. cao nhat la Id DC (khdng bd sung dau dau tuong) la 30,0%, tiep den Id TNI (bd sung 3% dau) va cudi cimg la Id TN3 (bd sung 7%
dau dau tuong trong khau phan). Nhu vay, ty le tieu chay giam dan khi ty le bd sung dau d;iu tirong tang len. Neu so sanh vdi Id DC, ty le lpn con mac bdih tieu chay d Id TNI it hon la 23,5%; Id TN2 h hon la 34.43% va Id TN3 it hon tdi 41,34%; ty le chua khdi benh d cac
Bang 5. Tinh hinh nhiem benh
Id TN so vdi Id DC theo thir tir tuong irng cao lion la 10.0 va 20.0%.
Dieu dd cd the giai thich la trong dieu kidi nang, ndng miia he, co' the lpn nai va Ign con bii sua da phai huy ddng mdt lupng Idn nang lugng de chdng ndng. Trong khau phan cd bd sung dau dau tuo'ng, viec phan giai cac axit beo khdng no tir dau dau tuong dupe nhanh chdng va de dang bon. cung cap kjp tbtTi phan nang lugng thieu but de huy ddng cac khang the chdng lai cac vi khuan gay ia chay va cac vi khuan khac, do dd, ty le mac bdih ia chay va ty le Ipn con chua khdi bdih va sdng sdt o' cac Id TN cao hon nhieu so vdi Id DC khdng bd sung dau dau tuong. Ket qua cua cluing tdi pht^i hpp vdi cdng bd cua Weiler-HA;
Leibbrand va cdng si^r (2002); Mikelenas-A (1998). theo dd. kha nang tieu boa chat beo bd sung Idn ban nhieu so vdi chat beo san cd trong khau phan va tang chat beo bd sung trong khau phan da lani tang tieu hoa toan bd khau phan va tang kha nang khang bdih ciia lpn con.
tieu chav ciia lon con bu sua
Chi tieu theo doi So lon theo doi So Urn mac benh Ty Ic mac bijiih So siinh So lon khoi benh
r_\ le khoi benh So siinh
B a n g 6.
Chi phi Tluic an ciio lon mc
Ihirc an cho Ion eon Chi phi T A cho lon me Chi phi 1 ,A cho lon con
l o n g chi phi 1,A cho lon mc \ a 1 con den CS
Khoi Im.mg Ion con CS/6 Chi phi I A kg Ion con cai sua
I v IC' giam chi phi TA so voi DC C h
on D V T
con con
%
%
con
%
"o
i p h i thirc an D V T
k g kg dong diing dong kg diing
%
L 6 D C 61
18 29,51
100 15 83,33
100 cho 1 k g Ion
L o D C 425.10 4.57 2338050 43415.00 2381465.00
62.08 38361.22
100
L 6 T N I 61 14 22.95 77.77 13 92.86 1 11.43 con cai sua g i 6 n g
L 6 T N 1 437.41
4.62 2405700 43890.00 2449590 65.91 37165.68
96.88
Lo T N 2 65
12 18.46 62.55 11 91.67 110,00 n g o a i
L 6 T N 2 441.51 4.62 2428250 43890.00 2472140 67,14 36720.67
95.68
L 6 T N 3 63
I I 17,46 59.1 7
11 100.00 120,00
L o T N 3 445.20 4.64 2448600 44080,00 2492680 68,00 36657.05
95.55
93
Pham Sy Tiep vd cs Tap chi KHOA HOC & CONG NGHE 76(l4):89-95 Chi phi thiic an cho 1kg lgn con cai sira 28
ngay tudi
Sd lieu bang 6 cho thav. Id TNI (bd sung 3%
dau); TN2 (bd sung 5% dau) va Id TN3 (bd sung 7% dau) cd tdng chi phi cho thiie an tuong img la 2.449.590.00 ddng;
2.472.140.00" dong va 2.492.680.00 dong.
Cdn Id DC cbi phi thirc an chi h d cd 2.381.465.00 ddng. Mac dii tdng chi phi thiic an cho lgn me \ a lgn con den CS 28 ngay cao hon Id DC (khdng bd sung dau) nhung chi phi tluic an cho 1 kg lgn con cai siia d Id TN 1.
TN2 \ a TN3 deu thap hon so vdi Id DC tir 3.22 den 4.14%.
Dieu nav cd the giai thich viec bd sung dau dau tuong \ao khau phan an ciia lgn me giai doan nudi con. nhd qua trinh tieu hda hap thu cac axit beo khdng no trong dau dau tuong de dang lion cac axtit beo no trong cac tliu'c an cd ngudn gdc ddng vat. nen da dap irng day du lupng nang lugng mat di do qua trinh dieu tiet than nbid de chdng ndng trong miia he ciia lpn me. nen lgn nai me tiet sua nhieu va dn dinh hon. lam cho lpn con sinh trudng phat trien tdt bon ty le tieu cha\ it hon nhiing lgn nai khdng dugc bd sung dau dau tiro'iig trong deu kidi miia be. K d qua na\ phii hgp vdi nhfrng cdng bd ctia Goihl.J (2000) theo do. lgn nai nudi con bang khau phan bd sung chat beo trong thdi gian nudi con. chat lugng siia tdt hon. ham lugng md siia tang 9%; khdi lupng lpn con cai sua tang 6.3%); ty' le hao hut cua lgn nai giam 4.0% so vdi lgn nai khdng bd sung chat beo vao khau phan trong giai doan nudi con.
KET L U A N
1. Bd sung tu 5-7% dau dau tugng vao thirc an cho lpn nai trong dieu kidi iniia he da nang cao kha nang thu nhan thirc an cua lgn nai tir 4.72 kg den 4.73 kg TA/nai/nga>. cao hon tir 14.32 - 20.29% so \di Id ddi chirng khdng bd sung dau. Sd con cai sira/d dat tir 9.13 con den 9.51 con; khdi lugng lgn con cai sira/d
dat tir 62,08 den 68.00 kg. tang tii' 6.53 - 10.15% so vdi Id DC va cd xu hudng tang dan khi tang mirc bd sung dau an.
2. Ty le nudi sdng ciia Ign con bii sua dat tir 90.04 den 93,14%. trong do. cac Id cd b6 sung til' 5- 7% dau cd ty le nudi sdng den cai sira cao bon Id DC tir 3,07 - 3,32%; ty le lpn con mac benh tieu chay d Id TN it hon Id doi chirng tir 23,5 -41,34%
3. Thdi gian ddng due trd lai giam dan theo ty le tang ciia chat beo bd sung, tir 7.07 - 7.86%.
Sir dung khau phan cd 5-7% dau dau tuong da lani giam su bao mdn co' the lgn nai trong thdi ky t i d sua nudi con tir 12,44 den 14.04%o. Chi phi thuc an cho 1 kg Ign con cai sua d cac Id bd sung tir 5-7%) dau dau tirong deu thap hon so vdi Id DC tir 3.22 ddi 4.14 %
T A I L I E U THAM KHAQ
[1]. Buczynski. J.T; Fajfer. E; Panek.A., (2001).
Reproductive trails of Polish Landrace sows depending on fat content of milk. Department of Pig Breeding and Production. Agricultural University. Poland. Annals-of-Animal-Science.
2001. 19-23; 8 ref
[2]. Mikelenas.A (1998). The effect of additional ration fat on the sows In farrow new born piglets weight and milk yielding. Lietuvos veterinarijos akademija. Spec, zootechnikos katedra. Kenia.
Veterinarija-ir-Zootechnika. 2002. No. 17. 93-96:
10 ref
[3]. Goihl.J (2000). Fat addition may not affect dally feed Intake during lactation. Agri-Nutrition Services. Inc.. Shakopee. Minnesota. USA.
Feedstuffs. 2000. 74: 8. 10-11; 1 ref
[4]. Weiler. H.A; Fitzpatrick.W.S: Leibbrand (2002). Modulation of essential (n-6);(n-3> fatty acid ratios alters fatly acid status but not hone mass In piglets. Department of Human Nutritional Sciences. University of Manitoba. Winnipeg.
Manitoba R3T 2N2, Canada. Jouinal-of-Nuuition.
2002. 132:9.2667-2672.
[5]. Wayne Shingleton (2005). Quan ly vd chdn nudi lan de dgt ndng sudt cao tgl Viet nam. Tai lieu Hoi thao qudc te ve Chan nudi Ipn . Ha npi va TP. H6 Chi Minh. thans 4/2005.
S U M M A R Y
I N F L U E N C E O N S U P P L E M E N T A T I O N OF S O Y B E A N O I L T O R E P R O D U C T I V E P E R F O R M A N C E OF E X O T I C S O W S IN S U M M E R C O N D I T I O N
Pham Sy Tiep',Tran Hue Vien\ Hoang Thi Phi Phuong-, Nguyen Thi Huong", Do Thi Ha', Kieu Thi Hue' Chamber of Sciences - Institute of Animal Husbandly; 'Centre for Thuy Phuong Pig Research
^College of.Agricullure and Forestry - TNU
Experiment was carried out from April 2007 to November 2008 in Pig Research Center - NIAH.
Twenty four farrowing sows, were aqual to breed, ages, litter size, body weight..., divided into 4 groups (3 traitments and I control), with 6 sows per group. In the group, six sows were kept in six farrowing crapes. One sow was a replicate. The dietary treatments were as follows: 1/ the group I was used the complex compound feed, added 3% of soybean oil; 2/ group II was added 5% and group III was added 7% of soybean oil; The control group was used the complex compound feed, not added the soybean oil. All of four groups were the same of nutritive value (ME: 3100 Kcal;
CP: 16%).
The experimental results showed that: Additional 5-7% of soybean oil to feed pigs for sows in the summer has enhance average feed intake from 4.72 kg to 4.73 kg/sows/day, higher from 14.32 to 20.29% compared with control group. Number of weaning piglets/litter from 9.13 lo 9.51; Weight of weaning piglets/litter fi'om 62.08 to 68.00 kg. higher than from 6.53 to 10.15% compared with control group. Using from 5 - 7% soybean oil in the ration of farrowing sows has reduced the percentage of diarriiea of piglets from 23.5 to 41.34%. The lost body weight of sows during the lactation time from 12.44 to 14.04% compared with control group.
Key words: Soybean oil. reproducllve performance, sow child
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