giáo trình mô đun chọn và thả giống nghề nuôi tôm thẻ chân trắng

1






GIÁO TRÌNH 



: 










2



  

              

  03

3


 tôm viên



, 

 , cách 


 .
 


 
, BP và 
 chúng tôi Chọn và thả giống tôm thẻ
chân trắng  
do Phát tr 
 4 bài:
Bài 1: 


Bài 2: 
Bài 3: 



Bài 4: 
 
                
 . 
sót,  , 
 

,  
 , các
chuyên gia và các        


1.  
K.s. 
2.  





4




TRANG

2

3


4

7

8

8
1. 

 
8
2. 



10
3. 
11

11

13

13

14

15


15

16
6. 


16

17

17
Bài 2: 
18

18
1. 
18

18

19

21

21
5


21


21
hành
22

22

23

23

23

25

25

25
g bao
25

25

26

28

28

28


29

29

29

30

30

30

30

32

34

36

37

37

38

40
6



41

41

42

42

43

43

44

51


52




7


 
 03




 




 c
nê nêu 
 
               

t kit và t


8


Bài 1: 




Mã bài: M 03-01



 (Pennaeus.vannamei) 
 ( ). 


 
 200  (1999). 


 . 


 
P.chinensis). 2001 


          










 
    


- C ;
- 
- 



- 

1. 




9


 



 

.
50%  . 




              
     





 , 


 . 


 


 ; 





Tuy nhiên, ha . 


 

 



   
             


 ,


 .
 , 
sát,  , 


    

, 

 


10

 ,  , 


  
, , 


 
2. 




 

 
     
  
 

  vào 2
 : 

 
ôi,   .
Các biện pháp quản lý và nâng cao chất lượng giống tôm the
̉
chân tră
́
ng

 

 

a) Chọn tôm the
̉
chân trắng bố mẹ nuôi vỗ thành thục




-  : 

 35 gam, 


 40 gam.
- 
râu dài 1,5 - 
- 
- 
- 
              

-  : 






 

b) Chọn tôm the
̉
chân trắng bố mẹ cho đẻ
11





- 
râu dài 1,5 - 
- 
- : 

 40
gam, 

  45 gam.
-  : 

 ,
 ,  ; 




-   


- 

 


 

3. 

:
 

 , 


 :
- 
- 

 
- C
- C

Theo -BNN-

tôtiêu chung 
a/ 
- Tôm     

- C

12

b/ 
- C;
- C
- 
- C
- C;
- 
c/ 

- 
- 
-  do             

- WSSV, YHV, IHHNV, BP,…).




28 TCN 124:1998 "

 n
-

 15 -  
1
STT





1

- 
- 
- 
1 cái
2
 
- 
- 
- Có cán
1 cái
3

- 15 lít
2 cái
4


1 cái
5

30 x 30 cm

13

6
Ðèn pin

Dùng pin 3 - 
1 cái
7
Kính lúp

1 cái
4.1. K 
4.1.1. Chuẩn bị kiểm tra
- ;
- V  

     
;
- Ttôm 15 l 

4.1.2. Tiến hành kiểm tra
- 


thau.
-              
xoáy trong thau, quan sát 


- 

-  
 

.

-  


 

: 

 


h, 

 



           
tôm
 



4.2. 
14



 



 



 

là 




 
tôm 
tôm 


* Chuẩn bị kiểm tra và kiểm tra
- 1520 con tôm 
-  
- Quan sát 

 
- lên.
-  


- 
 

.







ôm Post
a/ Cách kiểm tra:  100 con 


:
- tôm ;
- ;
- T ;
- X


b/ Cách chọn:
- N- 13mm;
- C 

2. 





 m Post
15






 (mg/con)
Post 9-10
Post 11 - 12
Post 13 - 14
Post 15  16



3,0


4,0


5,5


6,5

2,2  3,0
3,0  4,0
4,0  5,5
5,5  6,5




1,8  2,2
2,2  3,0
3,0  4,0
4,0  5,5



1,8
2,2
3,0
4,0

   

   
qua , 












- 







- 
- Râu 1 




-  , 


.
- 
- , 






-  

- 




- 
- 







 , 















- 












- 






- Râu 1 




- 
- , 


- 








 , 







- 











- 


.
- ô
khúc

5. 
5.1. Chọn theo phương pháp sốc bằng Formol

P

 
và hi 
quan,  tôm 
tôm. 

   tôm 

* Cách tiến hành:
16

+ C - 200 con  -
250 ml/m
3

 30 phút.
+ Ktôm ch

5.2. Chọn theo phương pháp hạ độ mặn:
 

* Cách tiến hành:
+    

+.
+ L100 con Post 15, cho 






P





6. 


   
             o máu
(IHHNV), BP,
tôm  
tôm 
Tôm  

tôm l



 


 


 Tôm 
17




 

- 1: 
- 2: 

C
i dung
- 
- 

18


Bài 2: 
Mã bài: M 03-02


 

 , 
 1  (
0
/
00
), 













 ,  : magnesium,


e. 









 , 













 

 
.




 

 











 



















 

 

. 










 

.




















 5 - 50
0
/
00
,













 25 - 32
0
/
00
.









 , 

















nuôi. 

























, 











.

-  
- 
- 

1.  ao nuôi
1.1 Dụng cụ đo độ mặn:
    
.
19

Hình 1

1.2 Cách tiến hành

- 
-  



 P


20


  



Lưu ý: Không được làm ướt khúc xạ kế.

Khi nồng độ muối của dung dịch quá cao, trên màn hình quan sát chỉ xuất
hiện màu trắng.

21

-  
-  
o 





 - 

 


- 
 - 
xác.
* Lưu ý: 


 
2.   g
2.1. Dụng cụ đo độ mặn:
 
2.1. Cách tiến hành
-  hành 







3. 

















 tôm




 . 















 
 . 















.
 :
      

0
/
00

 - 3



.  

22















0
/
00
 

(Pl/lít)
0  8
1
0
/

00
/ 10 phút
1.200  1.400
9  12
1
0
/
00
/ 10 phút
1.000  1.200
13  17
1
0
/
00
/ 10 phút
800  1.000
18  22
1
0
/
00
/ 15 phút
600  800
23  27
1
0
/
00
/ 45 phút

400  600











0
/
00
T 

(Pl/lít)
0  8
10/
00
/ 10 phút
1.200  1.400
9  12
1
0
/
00
/ 15 phút
1.000  1.200

13  16
1
0
/
00
/ 30 phút
800  1.000






































.
hành
-  
-  
C

- 
23






Mã bài: M 03-03

















 , 






















 





 . 






 ; 















 




 . 











 ,
 .

-  ;
-                

- khéo léo, nghiêm túc, chính xác trong quá trình làm



1. 
- - 10 ngày,
 

              
Bivalvia, 5 - ng.
- Post larvae 
2

 



24



1. G
2. G
3. G8
4. G
Hình 2. 

 Post larvae
Post larvae 
2



 larvae  
        . Post



15 có th


 .

25

2.  






2.1. Cơ sở lựa chọn mật độ vận chuyển:
- 


- 
- 
- 
2.2. Xác định mật độ vận chuyển


4 




 




tôm 
  8 lít 


 (con)



(con)

10
15
21
10.000
8.000
7.000
6.000
10.000
7.000
6.000
5.000

3. 
3.1. Chuẩn bị:
* Nguồn nước: Cho 6  8 
( ) vào bao. 
 3  
Chú ý:
+ 

  ,

bám trên thân tôm.