 C  DÒNG  CHUYÊN  V17 CÓ    CAO     VIGOVA  1  Trung tâm Nghiên cứu và Chuyển giao TBKT Chăn nuôi Tp. HCM; 1 Viện Chăn Nuôi Tóm tt      tr   1. t vn    dòng mái V7 (          cao. -  -3%. 2. Vt liu và phng pháp  -  -    -2008-  2.2.1. Phương pháp chọn lọc      tiêu dài thân .    -70 %   Phương thức ghép phối        Mái 1 84 504 12   2 84 504 12 3 84 504 12 4 84 504 12    5 84 504 12 2.2.3. Chăm sóc nuôi dưỡng Nuôi dưỡng: -2   Tiêu chuẩn dinh dưỡng thức ăn viên công nghiệp: - -  - - - - 2.2.4. Bố trí đàn khảo sát năng suất            5--80 %. 2.2.5. Bố trí đàn đối chứng (không có yếu tố chọn lọc)                 Sơ đồ khảo sát năng suất sinh sản (2 lần lặp lại):    Lô 1 Lô 3 Lô 2 Lô 4  Mái  Mái  Mái  Mái 1 25 150 25 150 25 150 25 150 2 25 150 25 150 25 150 25 150 3 25 150 25 150 25 150 25 150 4 25 150 25 150 25 150 25 150 5 25 150 25 150 25 150 25 150 2.2.5. Phương pháp đánh giá hiệu quả chọn lọc -  sát) -   2.2.6. Các chỉ tiêu theo dõi - -7, 8-21, 22- -   -  -   -    - - - -  - - -   -   2.2.7. Xử lý số liệu -  SAS. 3. Kt qu và tho lun     Tỷ lệ nuôi sống ở các giai đoạn nuôi qua 2 thế hệ    0-7 8-21 22-68 1  96,85 99,32 95,71  95,54 99,52 95,36  95,74 99,24 95,48 2  97,44 99,71 94,32  96,45 99,04 94,58  96,32 99,16 95,06 -    -97,14%, dòng V7 95,20-- --     -    Số lượng vịt đàn hạt nhân ở các giai đoạn nuôi qua 2 thế hệ   Mái (con)   Con   Con    Mái 1 654 95 84 1390 551 504 12,84 36,25 2 648 95 84 1056 548 504 12,96 47,73  1302 190 168 2446 1099 1008 12,90 41,21  Khối lượng cơ thể 7 tuần tuổi dòng V17  tính    n (con) M (g) CV (%) n (con) M (g) CV (%)  1 614 1992,43 8,37 95 2098,64 5,69 2 609 2011,24 8,26 95 2106,41 4,54 Mái 1 1306 1814,60 7,82 551 1863,01 5,61 2 1013 1825,92 8,77 548 1868,27 5,52 . Ly sai chọn lọc năng suất trứng 40 tuần tuổi   1 2  12 12  8 8  71,03 72,28  73,64 74,43  2,61 2,15          Khối lượng cơ thể 7 tuần tuổi (cân mẫu 50 con/đàn/giới tính)  tính  V17  M±SE (gam) M±SE (gam)  1 1985,40 a ± 20,29 1988,60 a ± 21,02 2 2008,20 a ± 19,08 1984,20 a ± 19,23 Mái 1 1806,20 a ± 18,70 1802,20 a ± 19,36 2 1818,40 a ± 16,59 1804,20 a ± 17,75 Hàng ngang, những con số có mang chữ cái (a) giống nhau thì sai khác không có ý nghĩa thống kê (P>0,05)   Năng suất sinh sản đàn nuôi khảo sát     V17  1  259,05 258,24  175 178   200,07 199,85  68,05 67,98  87,26 a 87,34 a CV (%) 9,06 9,58  92,08 92,38  78,16 78,08  3,71 3,71 2  (con) 256,12 260,66  176 177   201,42 200,13  68,51 68,07  87,58 a 87,24 a CV (%) 9,12 9,46  91,84 92,04  77,92 78,16  3,69 3,71 Những con số có mang chữ cái (a) giống nhau thì sai khác không có ý nghĩa thống kê (P>0,05); BQ: Bình quân    172-           4. Kt lun và  ngh   s                           Tài liu tham kho 1. Nguyễn Đức Trọng, Lương Thị Bột, Phạm Văn Chung, Nguyễn Thị Thuý Nghĩa, Đồng Thị Quyên (2008).           - -   Trang 361-368. 2. Dương Xuân Tuyển, Nguyễn Văn Bắc, Nguyễn Văn Diện, Đinh Công Tiến, Nguyễn Ngọc Huân (2001). - Trang 150-159. 3. Dương Xuân Tuyển, Nguyễn Văn Bắc, Đinh Công Tiến và Hoàng Văn Tiệu (2006).   -47. 4. Dương Xuân Tuyển, Lê Thanh Hải và Hoàng Văn Tiệu (2009).   -8/10/2009. Trang 179-187. .  C  DÒNG  CHUYÊN  V17 CÓ    CAO     VIGOVA  1  Trung. những con số có mang chữ cái (a) giống nhau thì sai khác không có ý nghĩa thống kê (P>0,05)   Năng suất sinh. 7,82 551 1863,01 5,61 2 1013 1825,92 8,77 548 1868,27 5,52 . Ly sai chọn lọc năng suất trứng 40 tuần tuổi   1 2  12 12 