Đăng nhập
 
Tìm kiếm nâng cao
 
Tên bài báo
Tác giả
Năm xuất bản
Tóm tắt
Lĩnh vực
Phân loại
Số tạp chí
 

Bản tin định kỳ
Báo cáo thường niên
Tạp chí khoa học ĐHCT
Tạp chí tiếng anh ĐHCT
Tạp chí trong nước
Tạp chí quốc tế
Kỷ yếu HN trong nước
Kỷ yếu HN quốc tế
Book chapter
Bài báo - Tạp chí
(2015) Trang: 281
Tạp chí: 5th IFS 2015
Liên kết:

This study aimed to determine suitable C/N ratios for larval rearing of giant freshwater prawns in a biofloc system. There were 5 treatments (1) C/N=10, (2) C/N=20, (3) C/N=30, (4) modified-static green water system (control), (5) open-clear water system (control). At the beginning, biofloc rearing tanks were inoculated by biofloc water from tilapia culture. Stocking density was 90 larvae/liter, and rearing tank volume was 50L/tank. During rearing period, in biofloc treatments, rice flours and soybean flours were added with suitable ratios to reach C/N ratios are 10, 20 and 30, respectively, in which total concentration was 20ppm/3days and water was not exchanged. Water quality parameters (temperature, pH, DO, TAN, nitrite, alkalinity), floc parameters (floc volume index FVI and floc composition), microbiological analysis, growth in length, larval stage index, survival rate and productivity were monitored. The results showed that FVI ranged from 1.8±0.7 to 5.4±2.3 ml/L and was largest in treatment (3), significantly different compared to the other treatments (p

 

 

CTUJoS indexed by Crossref

Vietnamese | English


BC thường niên 2019


Bản tin ĐHCT


TCKH tiếng Việt


TCKH tiếng Anh

 
 
Vui lòng chờ...