DI TRUYEN - GIONG VAT NUOI
SlfC BEN VE SINH SAN CUA LON NAI LAI LX(YVCN-MS15) VA YX(LVCN-MS15) KHI Dl/QC PHOI GIONG v 6 l D l / C DUROC
Le The Tudn*, Pham Duy Phdm\ Trinh Hong Son'. Trinh Quang TiiyenK Vu Vdn Quang\
Nguyin Tin Huong', Pbgm Sy Tiep' vd Nguyin Van Diec^
N g a y n h a n bai b a o : 20/10/2019 - N g a y n h a n bai p h a n bien: 18/11/2019 N g a y bai b a o d u p c c h a p n h a n d a n g : 28/11/2019
T O M T A T
Tong so 30 lgn nai Lx(YVCN-MS15) va 30 li?n nai Yx{LVCN-MS15) dirpc six d u n g cho nghien ciiu nay n h a m d a n h gia siic ben ve sinh san thong qua 7 liia d e tai Cong Ty T N H H Mpt Thanh Vien Hung Tuyeh. Ket qua nghien cun cho tha'y ca 2 n h o m lpn nai lai Lx(YVCN-MS15) va Yx{LVCN- MS15) deu CO su'c ben ve sinh san ra't to't the hi^n qua 7 liia de. Cu the tirong iing voi 2 nhom lpn lai nay ve SCSS dgt 12,93 va 12,87 con a liia 1, tang len va dat dinh 6 liia thii 3 (14,93 va 14,93 con) va giam dan tir liia 4 deh Iiia 7 n h u n g v i n dat d u p c 13,12 va 13,23 con; ve SCSSS la 12,57 va 12,50 con d Ilia 1, tang dan len va dat dinh 6 liia thii- 3 (14,17 va 14,13 con), tii d o giam dan xuong 12,62 vil 12,69 con d liia thii' 7; va SCCS cung tang dan tir liia 1 (11,83 va 11,83 con) !en va dat dinh a lua 3 (13,27 va 13,23 con), sau d o giam d a n va xuong thap nha't 6 liia 7 (11,92 va 11,96 con), Tuy SM' khac nhau giua cac liia de cua 3 tinh trang nay co y nghia thong ke theo diing quy luat sinh san, song mii'c chenh l?ch khong Idn lam, chiing to siic ben ve sinh san so con cao o 2 nhom Ipn lai nay. N h u v^y, trong dieu kifn chan nuoi ciia Vift Nam, ca 2 n h o m lpn nai lai Lx(YVCN-MS15) va Yx(LVCN- MS15) deu phat huy tot tinh n a n g sinh san khi d u p c pho'i voi dpc D. Vi vay, can s u d u n g ca 2 niiom lpn lai nay vao san xua't nham nang cao kha n a n g sinh san ciia lpn nai Viet Nam mang lai hifu qua cao cho nganh chan nuoi lpn nuoc nha,
T u kh6a: Lan LxCTVCN-MSlS) vd Yx(LVCN-MS15). sire ben vesinh sdn. lgn due Duroc.
ABSTRACT
Capacity of reproduction of Lx(YVCN-MS15) a n d Yx(LVCN-MS15) sows A total of 30 Lx(YVCN-MS15) and 30 Yx(LVCN-MS15) sows mating with D boars in order to identify the capacity of reproduction through seven p a n h e s in H u n g Tuyen Limited Company.
The experimental results showed that: The average of three reproductive traits of NB, NBA and NW in the first seven parities of Lx(YVCN-MS15) va Yx(LVCN-MS15) sows were good, following the normal circle of reproducHon of the sows: increasmg from the hrst parity, reaching the pick at third parity, and then decreasing from fouth to sevent parity. At the sevent parity, all three NB, NBA and NW traits are stil high, higher than those of different available exotic breeds in Vietnam.
It, therefore, these two crossbred sows should be used and mated with D boar in order to improve the reproductivity of sows, geting the higher pig production efficiencj' in Vietnamese pig industry.
Keywords: U-fYVCN-MSlSJ and rj:fLVCN-MS15j sows, capacity of reproduction, Duroc boar.
1. BAT VAN B £ c a o s a n n g o a i n h a p L a n d r a c e (L) v a Y o r k s h i r e I ' • ! -T /xA/r^M ^,,C1::^ - v n^rn^i ^)- ^ i o n g l o n V C N - M S 1 5 la k e t q u a c h o n L Q n n a i l a i L x ( Y V C N - M S 1 5 ) v a Y x ( L V C N - ) x..- °i, - ,.: ^ - i™. A ^ s „ „ . ,r,,p, ,, , , ..^ , , , , , . . - loc n h a n t h u a n h r e i o n g l o n co n g u o n g e n MM5) la s a n p h a m c u a q u a t r i n h lai t a o g i u a C, . -, - *~ ^ A - u •- ^• .-PT .• \,Z.^
.^ ' , yJT, , ,^-,,- 7. , .,, ," » M e i s h a n n e n d a d u o c d a n h gia la sieu s m h s a n giong lpn V C N - M S 1 5 vcn cac g i o n g l o n d u e ,_ . , . , „ , j ^ o u - ™ • h ^n1a^ r-.
° ° ^ ° ^ • ' tai n u a c ta ( P h a m D u y P h a m v a ctv, 201o), D o ' Vien ChSn nuoi CO SU t h a m gia ciia n g u o n g e n sieu s i n h s a n
•Hoi Chan nuoi Vigt Nam V C N - M S 1 5 n e n 2 n h o m l g n n a i lai L x ( Y V C N -
•Tac gia lien he-ThS Le The Tuah, PGDTTNC Lpn Thuy fyrcicv „ i Yx(LVCN-MS15) d a duOC n g h i e n Phuong. Vien Chan nuoi, DT 0973162772; Email: tuanlevcn^ M b l 5 ) Va i:x(LVL.iN iVOlDJ a a QUOC n g n i e n gmail.com c u u d a n h gia n a n g s u a t s m h s a n t r u n g b i n h
KHKT Chdn nuoi so 255 - thdng 3 ndm 2020
DI T R U Y E N - G I O N t
cua 3 lua de dau (Le The'Tuah va en-, 2020b).
Song, de danh gia kha nang lam dong nai, sue ben ve nang sua't sinh san ciia lgn nai ma toi thieu 7 liJa de can dugc \oc dinh. Khi danh gia sue ben ve sinh san, nang sua't cac chi tieu sinh san ciia cac liia la quan trgng, dac biet sy on djnh cua tat ca cac liia hav noi each khac la su chenh l^ch ve nang sua't giiia cac ltia de can dupc quan tam. Si/ chenh lech ve nang sua't sinh san giiia cac liia de cang it thi sue ben ve sinh san cua lgn nai cang cao. X'goai vi^'c xac dinh siic ben ve nang sua't sinh san ciia 2 nhom lgn lai L\(YVC\"A1515) va Y\(L\"CN- MS15), nghien ciiu nay cung nham danh gia sv phoi hgp ciia lgn di/c giong Duroc vcri 2 nhom lgn nai nay co thich hgp vai dieu ki^n chan nuoi lgn ciia nuoc ta khong bdi vi tren cimg nhom lgn nai Iai Lx(YVCN-MS15) nay, Nguyen Thi Huang (2018) da xac djnh dugc nhom lgn nai lai nay khi phoi voi due giong PiDu cho nang sua't sinh san cao: so' con so sinh/o (SCSS), so' con so sinh s6'ng/6 (SCSSS) va sii'con cai siia/o (SCCS) tuong img la 13,4;
12,8 va 11,8 con. Vi vay, myc dich cua nghien a i u nay la (1) xac dinh sue ben ve sinh san ciia 2 nliom lgn nai lai Lx(YVCN-MS15) va Yx(LVCN-MS15) thong qua 3 chi tieu chinh la SCSS, SCSSS va SCCS ciia 7 liia de; \'a (2) danh gia nang suat sinh san khi phoi voi due gio'ng Duroc (D) trong dieu ki|n chan nuoi ciia mien Bac Vi^t Nam de tir do lam nguyen Heu tao dong me tong hgp trong he thong giong lgn ViQt Nam.
2. VAT LIEU VA PHUONG PHAP NGHIEN CLTU 2.1. Vat lieu
Lpn nai lai Lx(YVCN-MS15) va Yx(LVCN- MS15); lgn due giong D va lgn lai giii'a chung.
2.2. Phuang phap
Theo doi cac chi tieu smh san ciia 30 lgn cai Lx(YVCN-MS15) va 30 lgn cai Yx(LV- CN-MS15) cho phoi vdi lon due giong D dupe thuc hien tit thang 07/2015 den thang 12/2018 tai Cong Ty TNHH Mot Thanh Vien Hung Tuyeh ma da dugc danh gia ve nang sua't sinh san trung binh 3 Ilia de dau trong cong
bo cua LC. The Tuaii vi cli (2020bl. «'^^",^';;
nang suat sinh san cua 7 Iu,i eic cua •' duvc xac dinh theo cac p h i m " : - i ' ' " L 5 5 J dung cho 3 chi tieu chinh la SC^^. - _ s e e s de ddnh gia siic ben vo sinh san va v so chi tieu nhir khoi luong so sinh/con (NL-M, con, leg), KLSS/o, k,.;. KL cai sOa/con (KLLs;
con, l<g), KLCS/6, kg v.i khoang each lua de (KCLD, ngav) cung duyc v.ic dinh de ho tr^
cho viec danh gia siic ben l e smh san cua / nhom li?n nai lai niii'.
2,3, Xtr ly so Ii?u
Bp .so lieu duijc xu ly bang diuong trinh SAS 9.1 (2002). Cac diam so thong ke bao gom dung luong m.^u (n), gia tri tmngbinh (Mean) va sai so chuan (SE). So sanli cac gia tn trung binh theo phep thii Tukey 6 miic P<0,05. Mo hinh thong ke sii dyng la Y,^^ - |j + G, + L^ + €^^_
Trong do, y^,/n ctii tieu iiglhln cuu, fi: trung binh quan the, G: inh Inrcmg ciia giong thir i (i=2J, L, la liia de tliirk(lc=7: lira 1,2,... lira 7 iephan tich sire ben cita lan nii m f,^, la sai so ngdu nhiin.
3,KET0UAVATHA0LUAN
3,1, Nang suat sinh san trung binh 7 lua de Clia l(m nai lai Lx(YVCN-MS15) va Yx(LVCN- MS15) phoi voi dire D
So' con so sinh/6 trung binh 7 lii'a de ciia Igm nai lai Lx(YVCN-MS15) va Yx(LVCN- MS15) khi pho'i vai due D lan Iu(;yt dat 13,84 va 13,87 con, tuong duong voi cac gia tri trung binh Clia 3 liia de dau (Le The Tuan va ctv, 2020b).
So con so sinh s6'ng/6 trung binh 7 lua d^
Clia lgn niSi lai Lx(YVCN-MS15) va Yx(LVCN- MS15) khi dugc pho'i vai due gio'ng D ian lugt la 13,37±0,09 va 13,38±0,10 con (P>0,05).
Ke't qua nay cao han so vai gia tri 12,8 con Clia lgn nai lai Lx(YVCN-MS15) cho phoi vai due PiDu (Nguyin Thi Huang, 2018), nhu-ng tuong duong voi cac gia trj trung binh ciia 3 Ilia dc dau da dugc cong bo boi L6 The'Tua'n va ctv (2020b), chiing to su on dinh ve SCSSS trong cac liia de la kha cao. Song, kft qua nay cao han so voi gia fri 10,50 va 10,5(1 cim cua lgn nai lai 3 giong Lx(YMC) va Ywl.MCj cong
KHKT Chan niuii MI 255 - Ihiin t
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DI TRUYEN - GIONG VAT NUOI
bo ctia Nguyen Van Due (1997) khi phan tich tren bp so li^u ciia nhieu co so ehan nuoi lgn tren ca nuoc, chimg to rang 2 nhom lgn lai nay co kha nang cho SCSSS cao hon lgn MC lai cimg co ty 1$ ve nguon gen lgn ngoai nhap nhu nhau-
S6' con cai sua/o trung binh 7 liia de ciia ipn nai iai nay khi dugc pho'i voi dye D lan lugt la 12,48 va 12,51 con (P>0,05). Ke't qua nay cao hon so voi gia tri 11,8 con tren cimg lgn nai Iai Lx(YVCN-MS15) nhung dugc phoi vai A\fC PiDu (Nguyen Thi Huong, 2018), tuong duong voi cae gia tri trung binh ciia 3 liia de dau (LL' The'Tua'n va ctv, 2020b). The'nhung, gia trj nay cao han cac gia tri 9,10 va 9,00 con tren bp so li?u tong hgp ciia ca nuoc ve 2 nhom lpn nai lai 3 giong Lx(YMC) va Yx(LMC) ciia Nguyen Van Due (1997),
Khoi Iugng so sinh/con trung binh 7 Ilia dc cua 2 to hgp lai Dx(LYVCN-MS15) va Dx(YLVCN-MS]5) deu la 1,34kg. Trong do, KLSS/6' cun 2 to hgp lai nay tuong ung 17,89 va 17,99kg, cao hon cac gia tri trung binh 3 lii'a dau 17,63 va 17,75kg ciia 2 to hgp Iai 3 giong L\(YVCN-MS15) va Yx(LVCN-MS15) dugc cong bo boi nhom tac gia Le The'Tua'n va ctv (2020a) vl CO them nguon gen D trong cac to hpp lai.
Khoi lu'png cai sii'a/con trung binh 7 lua de cua 2 nhom lgn lai nay khi dugc phoi vai dvc D d^l 6,50 va 6,47kg (P>0,05). Trong Iuc do, KLCS/o cua 2 to hpp Iai do hrong iing la 81,03 va 80,98kg, cao han gia tri 79,45 va 78,65kg trung binh ciia 3 lua de dau 6 lgn Iai 3 giong Lx(YVCN-MS15) va Yx(LVCN-MS15) khi dugc phoi vdi due Y va L ciia nliom tac gia Le The'Tua'n va ctv (2020a) vi day la con lai 4 giong D, L, Y va VCN-MS15.
Lgn nai lai Lx(YCN-MS15) va Yx(LCN- MS15) CO KCLD tot, trung binh oia 7 Iiia de khi phoi vdi dpc D la 153,79 va 153,23 ngay Ki't qua nay tuong duong vdi cac gia trj trung binh ciia 3 Iiia de dau (Le The Tuan va ctv, 2l)20b), nhung tha'p hon gia tn 195 va 192 ngay cua 2 nhtim lgn nai Iai 3 giong Lx(YMC) va Y\(LMC) cong bo ciia Nguyen Van Due (1997).
Bang 1. Nang suat sinh sin 7 lira de dau ciia lpn nii lai U(Y\CN-MS15) va Yx(LVCN-
MS15) phoi voi due D
Chi tieu SCSS, con SCSSS, con KLSS/con, kg KLSS/6, kg TLNS, % TCS, ngay SCCS, con KLCS/con, kg KLCS/6, kg KCLD, ngay
Lx(^-\CN-MS15) n 203 203 203 203 203 203 203 203 203 173
Mean±SE 13S4zO,ll 1337+0,09 1,34±0,00 17,89±0,14 93,42+0.50 23,90+0.05 12.48+0,10 6,50+0,03 8L03+0.71 153,79+0,69
Yx(LVCN-MS15) n 201 201 201 201 201 201 201 201 201 171
Mean+SE 13,87+0,11 13,38+0,10 1,34±0,00 17,99±0,15 93,75±0.43 23,79±0,04 12,51 ±0,09 6,47±0,03 S0,98±0,68 153,23±0,50 Ghi chii: Cdc gid tri Mean trong ciing lidiig co chir cdi khdc nhau la sir sai kitdc co y nghia thd'ng ke (P<0,05).
3.2. Siic ben ve sinh san cua lgn nai Doi vdi lgn nai, SCSS, SCSSS va SCCS la 3 chi tieu quan trgng nha't de danh gia cha't Iugng sinh san eua lgn nai: lgn nai co chat higng to't la lgn nai co nang sua't sinh san ma qiiye't dinh nhat la 3 chi tieu SCSS, SCSSS va SCCS phai cao.
The'nhung, SCSS, SCSSS va SCCS cao cung chi mdi dam bao nang sua't sinh san cao ciia moi o de. Ngu'di chan nuoi lgn nai mong muo'n rang lgn nai khong chi cho SCSS, SCSSS va SCCS hen moi o de eao ma su dong deu giiia eac lii'a de ciing phai ldn \'a tong so lua de trong ca qua trinh sinh san phai nhieu thi hieu qua chan nuoi lgn nai moi cao. Noi mgt each khac, trpn ca cupc ddi ciia mpt lpn nai phai de duoc cang nliieu IiJa va moi Iiia de cang nhieu con vdi su dong deu gitia cac Ida cang Idn thi chat Iugng ciia Ipn nai do cang tot \'a lgn nai dd dugc danh gia cd sue ben ve sinh san cao. De danh gia sue ben ve kha nang sinh san ciia 2 nhdm lgn nai lai Lx(YVCN-MS15) va Yx(LVCN-MS15), 3 chi Heu SCSS, SCSSS va SCCS ciia 7 Ida de la quan trgng nha't.
3.2.1. Sire ben ve sinh sdn ciia lon ndi lai Lx(YVCN-MS15)
Sue ben ve sinh san ciia nhom lgn nai Iai Lx(YVCN-MS15) dugc dua tren kich cd ciia 3 chl tieu chinh la SCSS, SCSSS va SCCS cita 7 Ilia de (Bang 2).
KHKTChdn nuoi sd 255 - thdng 3 ndm 2020
UI-
DI T R U Y E N - G I O N " <I N - ^ 'Bang 2. Nang suat sinh san cua l^n nii Iai Lx(Y VCN-MS15) phoi voi dvc D i:
(\tc.,n±SC)
, - lira di
C h i lieu SCSS, c o n SCSSS. c o n K I S S o n . k g KLSS/6, k g T L \ S , % T C S , n g a y S C C S , c o n K K S / c . m . k g K L C S / 6 . k g K C L D , n g a y
Liia 1 (n=30) 12.9310,26 1 2 ^ ? i 0 , 2 3 I M J i n i I h M - 0 3 2 94,43+1,38 23,S3±0,12 11,83-10,23 6,62+0,07 78 3 2 = 1 , 6 0
Liia 2 (n=30) 13.67±l.l20 13.40^+0.20 l,33±0,01 17,83*'''4fl,27
"1 l - t l ^^
23.87±0.14 I2,27'±0,30 6,45+0,09 7 S , W - - 2 Oc l ^ ^ - ' l - ' ' > 3 4
L u a 3 in=-'0) l - l ' S . ^ - ^ ) , ^ 14 ir-rO,24 L34-il,01 1 9 , 0 5 ' i 0 , 4 3
•^^.S^^I.U 2A(Ki^\\b 13,27'+0,23
6,48±0.07
•". l S ' i 2 . 0 1 154-10+2,41
Lira 4 (n=30) 14,63'±0,3I 13,97^'-±0,26 1,34±0,01 18,76"'±0,41 94,04±1,16 24,00±0,16 13,10'''±0,24
6,45±0,06 S 4 , 4 r ' ' i l , 6 2 I53,43±l,13
Liia 5 l n - : ' > ) 13,'*l>-111,22 I3,4S''±0,20 1,33+0,01 17,92'-:t<l If 42.S1±!,42 2,\S3±,0,14
t>,51iO,07 S1,42''-+1S7 L'i4,07±l,l.''i
L u a 6 ( n ' ' 2 , ' ' i 1 3 , 5 " ' = 0 , : ] . r 3 : ' t O , 2 i L.M'OOl i 7 , 7 7 * " ^ l 2 9
g : . 7 i - i , 4 2 2 3 , S ( ' t l U 4 i : , 3 6 ' ~ - t l 2 S (1,52+0,07 80,44'-11 H7 1 5 3 , l l ± l , 0 7
] 3 l 2 ' - i 0 , 2 6 12,62'±0,22
1,35±0,01 1 6 , 9 7 - y ) , 3 1 94,68±I,18 23,8S±0,13 ll,92'=i0,21 6,45±0,07 76,89'±1,6
So con so sinh/6 trung binh 7 Iiia de cua lgn nai lai Lx(YVCN-MS15) khi phoi vdi dye D d^t 13,84 con. Dien bie'n qua timg lua de cho tha'y SCSS da tuan theo mpt quy luat chung la tang dan tii' lua de 1 (12,93 eon) len va dat dinh cao nha't d liia 3 v'a sau do tti Iiia 4 giam dan de'n lua 7. Song sg chenh l^ch giira eac lua de vdi gia tri trung binh ciia 7 lua la khdng Idn ki' ca gia tri trung binh cua Iiia tha'p nha't la lua 1 (12,93 con) vacua Ilia 7 van (13,12 con) la
\'an con cao, ehiing to su on dinh qua cac lua de, sue ben ve tinli trang sinh san SCSS ctia ign Iai Lx(YVCN-MS15) la rat tot.
Xet ve chi tieu SCSSS trung binh cua 7 lua de ciia lgn nai lai Lx(YVCN-MS15) khi phoi vdi dpcD dat 13,37 eon. Su bie'n ddi ve chi tieu SCSSS qua 7 liia de cho thay ehiing tuan theo mgtquylu^t ehung la tir Ilia 1 (12,57 con), tang dan len d lua 2 (13,40 con), tie'p tuc tang len va d^t dinh cao nha't d Iiia 3 va sau dd giam dan tir lua 4 (13,97 eon) de'n lua 7, nhung van giii dupe so'lugng cao (12,62 con), dae biet khong CO su chenh lech nhau ldn ciia timg lua so vdi gia tri trung binh ciia 7 lua. Su sai khac giua cae Ilia cd y nghTa thd'ng ke (P<0,05)- Danh gia chung \-e SCSSS, gia tri trung binh ciia Ida thap nhat la lua 1 (12,57 con) thi den lua 7 van eon cao (12,62 con), ehung to sue ben ve SCSSS eiia lgn lai Lx(YVCN-MS15) la rat tot.
Nliu vay, lgn nai Iai Lx(YVCN-VIS15) cd the khai thac den 7 Ida de vi nang sua't sinh san ve
SCSSS vSn giii- dugc sp on dmh d muc cao, cao han so vdi hau het cac giong lgn ngoai nhap dang nuoi tai nudc ta.
— siiS/o -•-SCSSS/5 -ir-SCCS/ff
Hinh 1. SCSS, SCSSS va SCCS cua lpn nai lai Lx(YVCN-MS15) phoi vdi due D qua 7 lua de Sd'^ con cai sija/o trung binh 7 Ida de cua lpn nai Lx(YVCN-MS15) khi duge phd'i vdi due gidng D la 12,48 con, Dien bie'n ve chi tieu SCCS qua 7 Ida de eho thay Ign nai Lx(YVCN- MS15) da tuan theo mpt quy luat sinh san chung la tang h> Ida 1 (11,83 con), len lua 2 (12,27 con), tie'p tuc tang len va dat dinh d Ida 3 (13,27 con) va sau dd giam dan hj' Ida 4 (13,10 eon) den Ida 7 (11,92 con), Tuy su sai khac giii'a eac Ida co y nghTa tho'ng ke (P<0,05), nhung su chenh lee vdi gia trj trung binh cua 7 Ida la khong Idn. Chi tieu SCCS cda eac Ida thap nhu d Ida 1 la 11,83 con va lua 7 la H 92 con thi van con cao, cao hon so vdi hau he't cac gidng lgn ngoai nhap dang nuoi tai Viet Nam, chiing to sue ben ve SCCS ciia lpn lai Lx(YVCN-MS15) la rat tot. Nhi, .-•ay, j ^ ^^.
KHKT Chdn I i so 255 - thdng i n^^ij]^^
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lai Lx(YVCN-MS15) co the khai thac den 7 Ida vi den Ida thu 7, SCCS van con cao.
Ngoai ra, nang sua't cac chi tieu ve KLSS/
con, KLSS/6, KLCS/con, KLCS/6 va KCLD ding dugc giii d miic dp 6n dinh cao trong 7 ilia de cang chiing to sue ben ve sinh san cua lpn nai lai Lx(YVCN-MS15) la rat to't.
3.2.2. Sue ben ve sinh sdn cua Itpi ndi lai Yx(LVCN-MS15)
Tucmg tu, danh gia sue ben ve sinh san cua lgn nai lai Yx(LVCN-MS15), kich ed ve SCSS, SCSSS va SCCS cua 7 Ida de dugc su dung (Bang 3).
Bang 3. Nang suat sinh san cua Ign nai Yx(LVCN-MSl5) phoi voi Ign due D qua 7 lura de Chi tieu
SCSS, con SCSSS, con KLSS/con, kg KLSS/6, kg TLNS,';:.
TCS, ngay SCCS, con KLCS/con, kg KLCS/6; kg KCLD, ngay
LiJa 1 (n=30) Lura 2 (n=3D) LiJa 3 (n=30) Lua 4 (n=30) Liia 5 (n=28) Lija 6 (n=27] Lira 7 (n=26) 12,87''±0,26
12,50''±0,26 1,36±0,0I 16,98''±0,34 94,99±1,05 23,87±0,12 ]I,83'±0,21 6,51±0,07 77,00''±1,56
13,80''^0,27 13,53'''±0,28 1,33±0,01 18,06"''-^,42
92,27±1,25 23,67±0,1 12,47^±0,27
6,43±0,04 80,11''''±I,86 155,17±1,28
14,93'±0,31 14,13'±0,22 1,35+0,01 19,00^0,34 93,80+1,06 23,90+0,12 13,23^10,22
6,44±0,05 85,25U1,66 154,50±1,71
14,60'''±0,34 13,77*±0,23 1,35±0,01 18,53"'±0,39
94,68±0,98 23,90±0,12 13,00'''±0,2 6,43±0,08 83,494:1,49 152,23±0,99
13.93'^^,22 13,61-^±0,25 1,34±0,01 18,20^-±0,4 93,37±1,28 23,68 ±0,1 12,68'^±0,24
6,57±0,08 83,35-^1,85 152,39+1,12
13,59"'±0,25 13,33''±0,28 1,33±0,01 17,77^±0,42
92,61 ±1,37 23,67±0,11 12,33'^+0,29
6,52±0,07 80,31 "•±2,00 153,15 ±0,95
13,23''^±0,27 12,69-^,25 1,36±0,01 17,25"'±0,34
94,49±1,00 23,81 ±0,14 11,96'±0,21 6,42±0,08 76,89''±1,73 ]51,65±1,05 So eon so sinh/6 trung binh 7 lua de cua
Ipn nai lai Yx(LVCN-MS15) khi pho'i vdi due D dat 13,87 con. Xet theo timg Ida de cho tha'y SCSS cung tuan theo mgt quy luat ehung nliu lpn Lx(YVCN-MS15): tang dan tu' lua 1 (12,87 con) len lua 2 (13,80 con), tang len va dat dinh eao d Ida 3 (14,93 con), sau dd giam dan tu' Ida 4 (14,60 con) va xud'ng tha'p nha't d Ida 7 (13,23 con). Tuy den Ida 7, nhung lgn lai Yx(LVCN- MS15) van co SCSS cao (13,23 eon), chiing to siic ben ve SCSS cua lpn Iai Yx(LVCN-MS15) la rat to't.
Xem xet ve chi tieu so' SCSSS eua lgn nai Iai Yx(LVCN-MS15) khi phdi vdi due D cho tha'y nang sua't sinh san rat cao. Su bien doi ve chi tieu SCSSS qua 7 Ida de eua lgn Yx(LVCN- MS15) tuan theo quy luat sinh san ehung cua lpn nai la tang dan tir Ida 1 (12,50 con), len d 13,53 con d Ida 2, tie'p tiJC tang len va dat cao nha't d Ida 3 (14,13 con) va sau do giam dan tir Ida 4 (13,77 con), Ida 5 (13,61 con), Ida 6 (13,33 con) va xud'ng 12,69 con d Ida 7, chdng td nang sua't sinh san ve SCSSS cua lgn nai lai Yx(LVCN-MS15) rat tot, dac biet vin dn dinli nam xung quanh gia tri trung binh 13,38 con cua 7 Ida de. Tuy sg sai khac ve gia hi trung
binh giiia cac Ida cd y nghia tho'ng ke (P<0,05), song mdc dg chenh lech do van khong ldn. Tii' ke't qua nay cho tha'y sdc ben ve SCSSS cda Ign Iai Yx(LVCN-MS15) la rat tdt, Nhu vay, Ign nai lai Yx(LVCN-MS15) ed the khai thac den 7 Ida de vi SCSSS van con cao, cao hon so vdi gia tri trung binh cua hau he't cac gid'ng Ign ngoai nhap dang nuoi tai nudc ta.
Chi tieu SCCS cua lgn nai Yx(LVCN- MS15) khi dugc phd'i vdi due gio'ng D cung cao nhu Ign lai Lx(YVCN-MS15). Gia tri trung binh chi tieu SCCS qua 7 Ida de cho tha'y lgn nai lai Yx(LVCN-MS15) tuan theo quy luat sinh san ehung cua Ign nai la tang td Ida 1 (11,83 con), len Ida 2 (12,47 con), tie'p hjc tang Ien va dat dinh la 13,23 con d Ida 3, sau dd giam dain tir Ida 4 (13,00 con), Ida 5 (12,68 eon), Ida 6 (12,33 con) va xuo'ng con 11,96 con d Ida 7. Den Ida thd 7 ma SCCS van giu dugc 11,96 con, chenh lech vdi gia hi trung binh eiia 7 Ida de (12,51 eon) chi la 0,55 eon ehiing to sdc ben ve SCCS cua lgn lai Yx(LVCN-MS15) ciing hj'ong hr nhu Ign lai Lx(YVCN-MS15) la rat to't. Tu nhiing ke't qua thu dugc nay cho tha'y, Ign nai Iai Yx(LVCN-MS15) cung giong nhu lgn nai Iai Lx(YVCN-MS15) deu cd the khai
KHKT Chdn nuoi so 255 - ihdng 3 ndm 2020
DI TRUYEN-GIONC;
thac den 7 Ida de \i den Ida thd 7, SCCS van khong chenh I^c ldn so vdi trung bmh cua 7 Ida va van giu duge d muc cao, cao hon so vdi hau he't cac giong Ign ngoai nh^p dang nudi tai Viet Nam.
Tuonghd nhu Ign nai lai Lx(Y\'C\-MS15), nang sua't cua cac chi tieu ve KLSS.con KLS- S/6, KLCS/con, KLCS/d va KCLD cung dugc giu o mue dg 6n dinh eao trong 7 Ida de cang chung to rang sdc ben \v sinh san cua Ign nai lai Yv(IA'C\-MS15) cung la rat tol.
Hinh 2. SCSS, SCSSS va SCCS cda lgn nai Iai Yx(LVCN-MS15) phoi vdi due D qua 7 Ida de Tom lai, tong hgp ta't ca cac ke't qua ve nang sua't sinh san, dac biet 3 clii tieu chinh la SCSS, SCSSS va SCCS trong 7 Id'a de cun 2 nhdm Ign nai Iai Lx(YVCN-MS15) va Yx(LVCN-MS15) klii dugc phoi giong vdi lan dye D deu eho nang suat sinh san eua cae Ida de cao, cao hon so vdi khi cho phoi vdi PiDu (Nguyen "Thi Huong, 2018) va su on dinh giua cac Ida ldn: tha'p nha't la d Ida 1 va Ida 7 ma win giu dugc d mue eao, chung to sdc ben ve sinh san, nha't la SCSS, SCSSS va SCCS rat td't.
Vi vay, nen su dung 2 nhom lgn nai lai nay trong he tho'ng gid'ng Ign Viet Nam va eho phdi gidng vdi due D de c6 nang sua't sinh san cao hon so vdi hau he't cac gio'ng Ipn ngoai nhap dang nudi tai Viet Nam
4. KET LUAN
Lpn nai Iai Lx(YVC\-M515) va Yx(LVCN- M515) deu co sue ben ve sinh san the hi?n qua
3 chi tieu SCSS, SCSSS va SCC- rat tdt, n ^ sua't eao va dn djnh trong cac tua de: lU'i ' thap nha't va de den Ida thd 7 ma van gm dup'- d mde eao, cao hon so voi hau hel L.U- h lgn ngoai nh^p dang nuoi tgi ^'i^' '^'^'" '", ^ dieu ki^n clian nudi cua \'iet Nam, ca ~- lgn nai lai L\(YVCN-MS1^) va Y\(LVCN- MS15) deu phat huy tot tinh n.ini; .^inh san khi cho phd'i gid'ng \oi dye D. \'i vay, nen dyng ca 2 nlidm Ign Iai Lx(^'VCN-MS15) va Yx(LVCN-MS15) cho phd'i cui dye D trong san xuat nham nang cao kha nang sinh san cua lgn nai va sd dung chung lam nguyen lieu chgn lpc thanh dong lgn nai tdng hpp chat lupng cao trong hp thd'ng gid'ng Ipn ciia nuoc ta.
TAI LI|U THAM KHAG
1 Nguyen Van Due (1997). Genetic characterisation of indigenous and exotic pig breeds and crosses in Vietnam. PhD Thesis, AGBU, The University 6 New England, Arnudal, NSW. Australia.
2 Nguyen Thi Huong (2018). Kha nang sinh tnrong, sinh san cua lon Landrace x (Yorkshire x VCN-MS15) qua cac the'he va siic san xua't cua dai con khi phoi vtit di^c Pietrain x Duroc- Lu^n an Tie'n sy, Vien Chan nuoi, 3 Pham Duy Pham, Trinh Hong Son, Trinh Quang
Tuyen, Nguyen Thanh Chung, Nguyen Thi Huong, Nguyen Long Gia, Dam Tuan Tii, Dao Thi Binh An, Hoang Diic Long va Nguyen Nggc Minh (2018), Nghien ciiu lao cac to hpp lai giiJa giong Igm VCN- MSIS voi gio'ng icm ngoai Landrace va YorksJiire phyc v-V chan nuoi nong ho- Bao cao Tiing ke't ngliiem thu De tai cap Bp Nong nghiep va PTNT,
4 Le The Tuan, Pham Duy Pham, Trinh Hong Son, Trinh Quang Tuyen, Vu Van Quang, Nguyen Thi Huang, Ph^m Sy Tiep va Nguyen Van Diic (2020a). Nang suat sinh san cua \Qr\ nai lai LxVCN-MSIS va YxVCN-MSlS.
Bai da duoc chap nhgn dang ciia TC KHKT ChSn nuoi ngay 08 thang 09 nam 2019,
LeTheTuan,FhamDuyPhani,lrinh iiongSon Trinh Quang Tuyen, VuVan^Quans,^«^,.„, , hi H„ong, Pham Sy Ti^p va Nguyen Van Du. ^^u20b). Tans khoi lupng, day ma lur^g. heu ton ihu. cm va dac diem sinh ly sinh due cua lpn cai la. hau b, va nang .^.Vt sirdi san cua lon nai lai Lx(YVCN-MSl-,, va Yx(LVCN-MS15) Bai da dupc chap nhan dans LN i l c KHKTCh- '•
ngay 18 thang 10 nSm 2019, "^^ " " ° '
56 KHKT Chdn nuoi so 255 - th.,
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