CHAN NUOI DONG VAT VA CAC VAN DE KHAC
xua't ciia bo lai huong thit F, (Red Angus x Lai Sind) va F, Angus va be Lai Sind nuoi tap trung ban chan tha tai Dak (Brahman x Lai Sind) tai tinh Tay Ninh. Tap chi KHCN Lak Tap chi KHCN Chan mioi, 22: 5-12
' 14 Nguyen Huu Van, Nguyen Tien Von, Nguyen Xuan Ba . ScholU M.M. and Theunissen A. (2010). Tlie use of ^^ -^a Nhan Ai (2009) Kha nang sinh truong tii so smh mdigenous cattle in termmal crossbreeding to improve ^.^ ^^^ ^ . ^ ^ , bo dia phuong va lai Smh hiSn nuoi beef cattle production in Sub-Saharan Africa. Ani. Gen ^ - • - - - -
Res. Inf„ 46:33-39, Available from https //doi org/10 1017/ 6 hnh Quang Tri. T^p chi KHCN Chan nuoi, 21:14-19.
S2078633610000676. 15. Zeng Quingkun, Yang Bingzhuang, Shang Jianghui 12 Tong cue thong ke (2014). Thong cao bao chi ve fmh 0"^ J'"S (2002) Hi?" trang va xu the' phat tnen nganli
hinh kinh te xa hpi 6 thang dau nam 2014, ngay truy 'hi* ^6 o Tnjng Quoc. Nhiing chien luoc phat trien danh cap 20/1/2019. Dia chi tii http://www gso.gov vn/defauit. gia di truyen cho nganh chan nuoi bo thit 6 cac nuoc aspx-'tabid=507&ItemID=15037 dang phat tnen. Ky yeu hoi thao ACIAK, TT Nghien cuu 13 Dinh Van Tuyen, Van Tien Diing, Nguyen Tan Vui va Nong nghiep Quoc te'Australia, Canberra. Ban dich ciia
Hoang Cong Nhien (2010) Sinh tniong aia be lai Vi Red TT Tin hoc Nong nghiep va PTNT (ICARD)
NANG SUAT VA THANH PHAN HOA HOC CUA CAY MAT GAU {VERNONIA AMYGDLALINA DEL.) KHONG BON PHAN
DU'OC THU HOACH 6 CAC THOI DIEM KHAC NHAU
Lam Thdi Hiing'*'. Nguyin Thi Hanh HieV, Luu Thdi DanlP vd Ly Hn Tim Lan' N g a y n h a n bat b a o : 20/02/2020 - N g a y n h a n bai p h a n bien: 23/03/2020
N g a y bai b a o d u o c c h a p n h a n d a n g : 27/03/2020 T O M TAT
Thi ngtiiem d u a c b o tri hoan toan ngau ntuen voi 04 nghiem thiic va 03 lan lap lai de d a n h gia nang sua't va t h a n h p h a n hoa hoc cua cay Mat gau d u g c trong trong dieu kien khong bon p h a n va thu hoach 6 cac thoi diem khac nhau. Cac nghiem thiic khac nhau la thai diem thu hoach tai cac m o c thai gian 2, 4, 6, va 8 thang sau khi cat. Dien tich moi !6 thi nghiem la 30m^ va khoang each trong 50x50cm. Cac cay d u o c cat ngang liic thu hoach each mat dat 20cm, thoi gian theo doi va d a n h gia n a n g sua't va thanh p h a n hoa hpc trong 8 thang. Ket qua cho tha'y n a n g suat chat xanh thu hoach liic 8 thang dat cao nhat tinh tren Iiia n h u n g lai thap nha't khi tinh tren nam (F<0,01). N a n g suat chat kho, n a n g suat protein tho, vat chat kho va NDF thu hoach vao thai diem 6 va 8 thang cao h o n thu hoach d thoi diem 2 va 4 thang (P<0,01) Ham Iugng protem tho, khoang va ADF cua cay Mat gau khong khac biet (P>0,05) giua cac thoi diem thu hoach khac nhau.
T u khoa: cay Mat gau, ndng sua't, ADF vd NDF.
ABSTRACT
Evaluating b i o m a s s productivity a n d chemical position of Vemonia amygdlalma Del.
planted no fertilizer in different harvesting times
The experiment was designed in a completely randomized design with four treatments and three replicates to evaluate biomass produchvjty and chemical composition of Vernoma amygdiahna Del. planted n o fertilizer in different harvesting times. The treatments differed from harvesting times m 2, 4, 6, and 8 months after previous harvest time. Size of each experimental unit w a s 30m^
and dimensions between h-ees were 50x50cm. Vemonia amygdiahna Del. was cut at the position of 20cm from ground and observated until 8 months to evaluate its biomass yield and chemical position. The results showed that green biomass productivity harvested in 8 m o n t h s was the ' Truong Dai hoc Tra Vinh
-United Graduate School of Agriculture Science, Tokyo Umversit>' of Agriculture and Technology. Tokyo 183-8509, Japan ' Khoa Nong nghiep, Truong Dai hoc Can Tlio
• Tac gia hen he: TS Lam Thai Hiing, Tnrong khoa Nong nghiep-Thuy san. Tnrong Dai hoc Tra Vinh. DT 0919026614, Email:
IthungPtvu edu.vn
highest when calculated per a harvest, but the lowest when calculated per a year (P<0,01). Dry matter and crude protein productivity, dry matter, neutral detergent fibre were harvested in 6 and 8 months to be higher than that of in 2 and 4 months (P<0,01). Crude protem, ash, and aad detergent fibre of Vemonia amygdiahna Del. did not differ significantly (F>0,05) between different harvest times.
Keywords: Vernonia amygdalina Dei, productivity, ADF, and NDF.
1. DAT VAN BE
Viec lam dung thuoc khang sinh trong phong va dieu tri benh trong chan nuoi dpng vat la mpt trong nhu'ng nguyen nhan lam anh huong true tiep deh chat luong san pham chan nuoi, dong thai ciing gay anh huong tni'c tiep den siic khoe con nguoi. Nam 2018, Luat Chan nuoi da cam sii dung mpt so' loai khang sinh trong chan nuoi va thuy san, chi duoc phep SU' dung khang smh trong san xua't con giong va deh nam 2020 se dimg viec sii dung khang sinh bo sung vao thuc an chan nuoi (Bp Nong nghiep va Phat trien nong thon, 2019).
Vi vay, bien phap thay the'an toan va hieu qua nha't trong viec phong va dieu tri benh hoac bo sung vao thiic an cho vat nuoi la sii dung cac loai thao dupc tu' nhien.
Cay Mat gau (Vemonia amygdalina Del.) CO xua't xii tu' Chau Phi, duac trong pho bieh a khap noi tren the' gioi va nlueu vimg 6 Viet Nam. Day la loai cay chiu han nhung Iai rat ua am, Thanh phan hoa hpc ctia cay Mat gau gom vat cha't kho 8,83%, khoang 0,92% va mpt so hoat cha't co duoc tinh y hpc nhu stigmasterol, stigmast-4-en-3-one, beta sitosterol, campesterol va vitamin E (Doan Thj Kim Dao, 2016). Hoat cha't dJng trong cay Mat gau la hon hpp cac hoat chat sinh hpc gom vitamin, khoang, axi't amin, glycoside, saponin, alkaloid, tannm, flavonoids cung nhieu phiic hpp khac (Nguyen Dung, 2019), chiing CO tac dijng dieu tri benh viem nhiem duong ho ha'p va berth H. Theo Ijeh va Ejike (2011), o Chau Phi, mot so'nguoi da dung cay Mat gau de tri so't ret, giun san, ho trp tieu hoa, kich thich them an va tri vet thu'ong khu vuc cho con nguoi. Theo Ibrahim va El-Moaty (2009), cay Mat ga'u co tac dung cho'ng lai mpt so'vi sinh vat co hai. Voi nhieu tac dung tich cue ciing kha nang phat trien manh ve sinh
khoi, cay Mat gaii la mpt nguon thao dupc mang lai tiem nang lon. Do do, nghien cii'u nay nham khao sat nang sua't va thanh phan hoa hpc ciia cay Mat gau (Vernonia Amygdalina Del.) de sii dirng lam thiic an chan nuoi.
2. VAT UEU VA PHUDNG PHAP NGHIEN CUU 2.1. Dia diem va thai gian thuc hien
Thi nghiem dupc thuc hien tai Trai Nghien ctiii va Thuc nghiem Nong nghiep, Khoa Nong nghiep, Truong Dai hpc Can Tho, Cac mau tivai sau khi thu hoach duoc dem ve phan tich tai Bp mon Chan nuoi, Khoa Nong nghiep, Truong Dai hpc Can Tha, tir thang 3/2019 den 11/2019.
2.2. Bo tri thi nghiem
Cay Mat ga'u [Vernonia amygdalina Del.) dupc bo' tri theo the thiic hoan toan ngau nhien voi 4 nghiem thiic (NT), 3 lan lap lai, tong cpng CO 12 16, dien tich moi 16 la 30m-.
Cac NT gio'ng nhau ve cham soc, khong bon phan trong suo't qua trinh thi nghiem, nhung khac nhau do o 4 NT duoc thu hoach lan luat vao tho-i diem 2, 4, 6 va 8 thang sau khi tro'ng:
TH^,, TH^,, TH^,, THj^,, Mat dp trong cay Mat ga'u theo khoang each 50x50cm, giiia cac 16 duoc phan biet bang 1 duong ranh khoang each lODcm, Cac cay dupc cat ngang dong loat each mat da't 20cm va chon ngau nhien 30%
cac cay da cat de tinh nang sua't. Cac chi heu ve nang sua't dupc xac dinh sau khi thu hoach liic 9 gid. Nang sua't chat xanh (NSCX) dupc xac dmh bang each can phan la va dot non.
Mau phan tfch thanh phan hoa hpc duoc chpn lay tii phan NSCX.
2.3. Cac chi tieu theo doi
Cac chi tieu dupc theo doi gom NSCX, nang sua't cha't kh6 (NSCK), nang sua't protein th6 (CP) va thanh phan hoa hoe.
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CHAN NUOI DONG VAT VA CAC VAN DE KHAC
NSCX dupe xac dinh bang each tach phan la va dpt non ra khoi than cay sau khi thu hoach a i a cac cay dupc chpn lay mlu.
NSCK dupc xac dinh bSng each lay 1kg mau hioi trong NSCX 6 moi 16 de tinh NSCK, sau do lay lOOg mau de phan tich vat chat kh6 (DM). NSCK - DM(%)xNSCX. NSCP = NSCKxCP (%).
Lay ngau nhien 1kg mau tuoi, eat nho va sau do lay ngau nhien lOOg mau de phan tich thanh phan hoa hpc nhu DM, CP, tro (Ash) theo phuang phap oia AOAC (1990); xa kh6ng tan trong m6i truoTig trung tinh (NDF) va xo kh6ng tan trong moi truong axit (ADF) theo phuong phap ciia Van Soest va ctv (1991).
2.4. Xtf ly so lieu
S6'lieu dupc xii ly tho'ng ke bSng ANOVA va so sanh su khac biet trung binh ciia 3 the' he bang Tukey ciia pha'n mem Minitab 13.2 (2000).
3. KET QUAVA THAO LUAN
3.1. Nang suat chat xanh cua cay Mat gau Nang sua't cha't xanh (NSCX) la chi tieu chinh de danh gia kha nang san xua't ciia cay Mat gau. Nang sua't chat xanh/liia va NSCX/
nam cua cay Mat ga'u dupe trinh bay a Bang 1.
NSCX/liia giiia cae thoi diem thu hoach khac nhau chenh lech nhau kha ldn va khac biet co y nghia tho'ng ke (P<0,01). Khoi lupng cha't xanh cao nha't a tho'i diem thu hoach 6 thang va 8 thang sau cat, tha'p nha't a thoi diem thu hoach 2 thang sau cat. Dieu nay do tho'i gian thu hoach cang lau thi kho'i luang chat xanh thu dupc se cang nhieu. Tuy nhien 6 thoi diem thu hoach 8 thang va 6 thang sau eat thi NSCX gan nhu nhau. Nguyen nhan la do o thoi diem thu hoach 6 thang de'n 8 thang eay on dinh ve chie'u eao va so' nhanh de tap trung phat trien phan than g6. Hon nua, cay da thay di phan la bi thoai hoa 6 duoi thap do thie'u anh sang trong thoi gian dai, cung nhu su tac dpng cua dieu kien moi truang nen da chenh lech.
Ke't qua nghien a i u ciia Nguyen Thi Hong Nhan va ct\' (2012) eho tha'y khi thu hoach a thai diem 90 ngay hioi, cay Binh Lmh cho
NSCX la 5,11 tan/ha; cay Keo Ciii cho NSCX la 6,09 tan/ha; cay Flemmgia cho NSCX la 6,69 tan/ha. Cac ke't qua tren tha'p hon nhieu so voi NSCX ciia cay Mat gau 6 thoi diem thu hoach 2 thang sau eat trong nghien a i u nay.
Bang 1. Nang suat chat xanh ciia cay Mat gau (tah/ha)
Chi tieu NSCX/lua NSCX/nam
TH„
37.5' 224''
Nahiem thiic TH„ TH„
55,7^ 102=
167^' 204='- TH„, 108^
162' - SEM
3,75 10,02
P 0,01 0.01 Gin chu: Cdc gid tri ir cung hang mang chie cdi khac nhau Id su khde biet co y nghia (P<0,05).
Nang sua't chat xanh/nam duoc tinh bang so lan thu hoach trong mpt nam nhan voi NSCX/liia. Mot nam eo 6 lan thu hoach a NTTH,^ 3 lan thu hoach 6 NTTH^,; 2 Ian thu hoach 6 NTTH^^ va 1,5 lan thu hoach a NTTHg^. Nang suat chat xanh/nim 6 cac thoi diem thu hoach khae biet rat co y nghia thong ke (P<0,01) Nghiem thiie TH„ co NSCX/
nam cao nha't la 224 ta'n/ha/nam, hep theo la NTTH^, 204 tan/ha/nam va tha'p nha't 6 NTTHg, voi NSCX 162 tan/ha/nam. Han niia, su chenh lech nay khong dong deu giii'a cac NT, cu the NSCX/nam ciia NTTH^, la 204 tan/
ha/nam, cao hon NTTH^| (167 tan/ha/nam) ma kh6ng giam qua timg NT. Dieu nay cho thay trong mpt nam cay se phat trien a nhieu giai doan, ben canh do ye'u to moi truong va mua vu ciing gop phan anh huong de'n nang sua't sinh trudng ciia eay 6 timg giai doan.
3.2. Nang suat chat kho va nang suat protein tho Ke't qua a Bang 2 cho tha'y NSCX, NSCK va NSCP tuong quan voi nhau, khi gia tri NSCX cang lon thi NSCK va NSCP cung cang lon. NSCK giira cac NT khac biet co y nghia thong ke (P<0,01). NSCK cao nhat o TH^^ va TH^^vai 21,1 va 23,5 tan/ha, tha'p nha't 6 TH^^
voi 7,23 tan/ha.
Bang 2. Nang suat chat kho va protein tho Chi tieu
NSCK (tan/lia) NSCP (tan/ha)
TH,, 7.23- 1,49'
Nghie TH„
10,8'' 2.27*
mthut TH„
2L1- 4,34=
TH, 23,5' 4 , 7 6 '
SEM 0,83 0.17
0,01 0,01
Ke't qua NSCK a thai diem 2 thang sau cat ciia cay Mat ga'u trong nghien a i u nay cao hon nhieu so voi NSCK ciia cay Da quy thu hoach liic 60 ngay tuoi theo bao cao ciia Nguyen Thi Hong Nhan va Mai Vu Duy (2012) voi NSCK la 1,34 ta'n/ha; cay Mendola thu hoach luc 20 tuan tuoi theo bao cao cua Nguyen Hoang Quynh Nhu (2017) vai NSCK la 5,8 tah/ha.
Thai gian thu hoach khac nhau dan de'n nang sua't CP ciia cay khac biet c6 y nghla thong ke (P<0,01). Nang sua't CP cao nha't 6 nghiem thiie thu hoach luc 6 thang va 8 thang vo'i nang sua't CP lan lupt 4,34 va 4,76 ta'n/ha;
tha'p nha't 6 nghiem thxic 2 thang vai nang sua't CP 1,49 ta'n/ha. Ke't qua nghien ciiu nay eao hem nhieu so voi nang sua't CP cua cay Anh Dao gia dupc bon phan hoa hpc 30 ta'n/
ha va dupe thu hoach luc 16 tuan tuoi trong bao cao ciia Nguyen Van Hon va Nguyen Thi Hong Nhan (2012) la 0,12 ta'n/ha.
3.3. Thanh phan hoa hpc a i a cay Mat gau Thanh phan hoa hpc cua cay Mat ga'u duoc thu hoach 6 04 thoi diem khac nhau dupe trinh bay 6 Bang 3. Ke't qua eho tha'y ham lupng DM va NDF ciia cay Mat ga'u bi anh huong bai thoi diem thu hoach khac nhau (P<0,05). Ke't qua nay phii hpp voi ghi nhan ciia Le Chi Cuong (2018) khi so sanh nang sua't ciia cay Mat ga'u a thai diem 16 tuan tuoi va thai diem 32 tuan tuoi. Tuy nhien, ham lupng CP, khoang, ADF tuang do'i dong deu qua eac moc thai gian thu hoach (P>0,05). So voi thi nghiem ciia Le Nguyen Nam Phuong (2018), cay Indo va Mendola khi thu hoach a Ilia 2 CO ham lupng DM lan luot la 22,81 va 23,39%, ham lupng khoang la 9,06 va 5,44%;
ham lupng CP la 26,35 va 22,61%; ham lupng ADF la 24,91 va 32,97%; ham luong NDF la 45,68 va 59,14%, Tir so lieu tren cho tha'y cay Mat ga'u trong nghien ciiu nay co ham lupng DM, CP, ADF, NDF tha'p hon va chi co ham lupng khoang cao hon so vai 2 loai cay tren.
Dieu nay la do ham lupng DM tha'p hon nen cac duong chat khac tha'p hon bai vi ham luong CP, khoang, ADF, NDF dupc b'nh tren ham lupng DM. Cay Indo va Mendola la 2 loai
cay thupc hp dau, co ham luong CP cao, vi 6 re ciia cae eay ho dau co nhieu no't san.
Bang 3. Thanh phan hoa hgc cay Mat gau (%/DM) Chi tieu Nghiem thiic
TH,, TH,, TH,, TH, - S E M DM(%) 19,30^ 19.42'' 20,56^'' 21,70^ 0.48 0.01 Ash(%} 11,88 12,54 12,64 12,74 0,27 0,13 CP(%) 20,57 20,95 20,62 20,28 0,35 0,61 ADF (%) 28,19 28,98 28,99 28,00 1,05 0.87 NDF(%) 35,08-^ 37.08*^ 40,14'"' 43.21'' 1,16 0,01 Bang 3 eho thay ham lupng DM va NDF tang dan theo thod diem thu hoach: thu hoach a thai diem ngan nha't la TH^^ voi ham lupng DM va NDF tha'p nha't (19,30 va 35,08%); cao nha't a TH va TH^^ voi ham lupng DM la 20,56; 21,70% va NDF la 40,14; 43,21%, Mac dii ham lupng CP khong khac biet nhung co khuynh huong giam qua cac thai diem thu hoach khae nhau. Khi eay cang truang thanh ham lupng CP cang giam va ngupe lai ham lupng cha't xo cang gia tang (Nguyen Nhut Xuan Dung va ctv, 2007), dieu nay ding phii hop vol ke't qua phan tich thanh phan hoa hpc cay Mat ga'u va 2 gio'ng cay hp dau trong bao cao aia Le Nguyen Nam Phuang (2018).
4. KET LUAN
Thu hoach cay Mat ga'u vao thai diem 6 thang sau khi cat cho NSCX, NSCK, NSCP va DM hieu qua nha't.
TAI UEU THAM KHAO
1 AOAC (1990). Ofhcial Methods of Analysis 15th Ed.
Association of official Analytical Chemists. Washington DC. 1, 69-90,
2 Bg Nong nghiep va Phat trien nong thon (2019), Thong tu so 21/2019/Tr-BNNPTNT. huong d§n mot so dieu cua Luat Chan nuoi ve thiic an chan nuoi.
3 Le Chi Cutyng (2018), Anh huong ciia lua cat va thoi gian cat len kha nang sinh tnrong va nang sua't cua cay Mat ga'u (Vernonia amygdalina Del) Khoa luan tot nghiep Dai hgc nganh Chan nuoi. Truong Dai hoc Can Tho 4 Nguyen Dung (2019) Cong nang than ky ciia cay Mat
ga'u va each sir dung hieu qua, Siic khoe cgng dong.
https //baosuckhoecongdong vn/tac-dung-cua-cay- mat-gau-139278 html
5 Nguyen Nhut Xuan Dung, Luu Him Manh va Nguyen Thi Mpng Nhi (2007) Thanh phan hoa hoc va gia tri dinh duong cua mot so giohg cay thiic an gia sue ho hoa thao va ho dau trong tai TP Can Tho Tap chi KHKT Chan nuoi, 7:183-92
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CHAN NUOI DONG VAT VA CAC VAN DE KHAC
Doan Thi Kim Dao (2016) Nghien ciiu chiet tach. xac pho Can Tho, Tap chi KHKT Chan nuoi, 157 30-17 dinh thanh phan hoa hgc trong mgt so dich duet cua 12. Nguyen Thi Hong Nhan, Nguyen Van Hon v ,1 Mai Vu than cay mat gau o cao bang. Luan van Thac sy Khoa Quy (2012). So sanh nang suat, gia tri dinh ducmg, kha hoc, Dai hgc Da Nang. ^^^ ^^^^ ^^^^^ ^ a Leiicaen^ leucocepht>!a. Calhandia Nguyen Van Hon va Nguyen Thi Hong Nhan (2012), calottii/rsus va Flemmgia macropylla Tap chi KHKT Chan Anh huong cua cac miic do phan bon deh sinh truong. nuoi 159: 33-39
nang suat va thanh phan hoa hoc ciia cay Anh dao gia 13. Nguyen Hoang Quynh Nhu (2017). Anh huong cua (Ggdiriada sepium). Tap chi KHKT Chan nuoi, 159:69-76. chieu cao cat len kha nang sinh trucmg va tinh nang san ijeh LL and Ejike CE. (2011), Current perspectives on xua't ciia cay Mendola (Tephrosia Candida) va Indo. Khoa the medicinal potentials of Vemonia ami/gdahna Del. J. luan tot nghiep Dai hoc nganh Chan nuoi, Trucmg Dai Med. Plan Res , 5:1051-61. ' hoc Can Tho
Ibrahim H. and EI-Moaty A. (2009). Evaluation 14. Le Nguyen Nam Phuong (2018). So sanh sinh trucmg of the primary and secondary products of Nepta va nang suat ciia cay Indo va Mendola (Tephreosm septemcrenata Erenb. ] Nat. Pro, 2: 81-88 Candida). Khoa luan tot nghiep Dai hgc nganh Chan , Minitab (2000) Minitab Reference Manual. PC Version, nuoi, Truong Dai hoc Can Tho.
Release 13 2, Minitab Inc.. State College, PA. 15. Van Soest P.J., Robertson J.B. and Lewis B.A. (1991) Nguyen Thi Hong Nhan va Mai Vu Duy (2012) Buoc Methods for dietary ftber, neutral detergent fiber, dau kliao sat kha nang sinh trudng, nang sua't ciia cay Da and nonstarch polysaccharides in relation to animal cjuy {Titlionia diversiplia) va Trichanthera gigantea tai thanh nutrition. J. Dairy Sci, 74: 3583-97
ANH H l / d N G CUA Si/ THAY THE LONG DO TRU'NG BANG LECITHIN DAU NANH TRONG MOI T R l / d N G PHA LOANG LEN CHAT LLfONG TINH TRUNG CHO B A O Q U A N 6 5°C
Nguyen Van VMI'*, Pakanit Kupittayanant- vd Nguyen Thiiy Linh' N g a y n h a n bai b a o : 26/04/2020 - N g a y n h a n bai p h a n bien: 06/05/2020
N g a y bai b a o d u g c c h a p n h a n d a n g 08/05/2020 T O M T A T
Ngtuen cuu d u g c t h u c hien d e d a n h gia s u anh h u o n g cua 4 nghiem t h u c (NT) la 4 miic d o khac nhau cua lecithin d a u n a n h (1. 3, va 5%) va 20% long d o t n i n g (doi chiing) trong moi t r u o n g p h a loang len chat luong h n h triing cho d u o c bao quan lanh o 5"C trong 10 ngay. Tinh trung bao q u a n d u g c d a n h gia chat luong ve cac chi heu n h u hoat luc tinh trimg, m a n g te'bao, m a n g acrosome va tiem nang hoat dong ty the, Ke't qua nghien ciiu chi ra rSng mac d u NT lecithin d a u n a n h c6 chat l u g n g tinh trimg t u o n g t u voi NT long d o t n i n g trong 6 ngay dau 6 chi tieu hoat luc tinh trimg, n h u n g chat luong tinh trung 0 cac chi tieu con lai ciia NT long do t n i n g cao nha't va khac nhau co y nghia thong ke (P<0,05) ktu so sanh voi cac NT lecithin dau n a n h trong suot 10 ngay bao quan. Ngoai ra, NT lecithin dau n a n h o n o n g do cao (5%) co tac d o n g tieu cue de'n hoat luc h n h triing trong suot thoi gian bao quan va tha'p hon co y nghla thong ke so vai cac NT con lai (P<0,05). Ke't luan rang lecithin dau nanh khong the thay the'long d o t n i n g trong moi truong pha loang d e bao ve tinh trimg bao quan lanh 6 5°C trong 10 ngay.
Tu khoa: Lecithin dau nanh, long do trdng, moi truviig pha loang, tinh triing cho, biio quan lanh.
ABSTRACT
Effects of soybean lecithin as a replacement of egg yolk in semen extender on chilled canine sperm quality
The study was conducted to evaluate the effects of 4 treatments with different concentration of soybean lecithin (1, 3, 5%) and egg yolk (20%) in Tris buffer extender on chilled canine sperm ' Truong Dai hoc Tra Vinh
^Truong Dai hoc Cong nghe Suranaree, Thai Lan
•Tac gia hen he. TS Nguyen Van Vui - Tnrong Dai hgc Tra Vinh. So 126 Nguyen Thien Thanh - Kliom 4. Pliuong 5. Thanli pho Tra Vinh, Tinh Tra Vinh Dien thoai: 0337 721 219. Email nvvuityiffitvu.edu.vn
KHKT Chdn nuoi so 257 - thdng 6 ndm 2020