Search

Search Results

• Investigation of Implementing State’s Regulations on Pesticide Trade Management in Vegeteble Production: A Case Study in Red River Delta

  Nguyen Phuong Le, Tran Thi Nhu Ngoc

  Date Received: 27-11-2012 / Date Accepted: 18-01-2013 / Date Published: 02-07-2025

   Abstract PDF (VIETNAMESE)

  This paper concentrated on the implementation of state regulations on pesticide trade management in the Red river delta. Based on secondary and primary data collected by different techniques and statistical description, the research showed that pesticide trade inspection has been frequently carried out. However, some shortcomings were happened in pesticide trade management such as low inspecting frequencies, inadequate punishment for someones breaking the regulations, few pesticide trade inspectors, and so on. Empirical data witnessed that a number of pesticide traders have not implemented regulations on work permit, permissible petsticide list, shop location, safe equipments, and pesticide arrangement. In order to deal with these limitations, Government needs to issue policies on knowledge upgrading for both traders and inspectors and on level of pushnisment for regulation breakers.

  DOI: https://doi.org/10.31817/tckhnnvn.2013.11.1.

• Effects of Dietary Canthaxanthin on Growth and Skin Color of Permit (Trachinotus falcatus)

  Nguyen Quang Huy, Do Van Thin

  Date Received: 21-08-2018 / Date Accepted: 08-11-2018

   Abstract PDF (VIETNAMESE)

  This study was conducted to evaluate the effects of dietary canthaxanthin on growth and skin color of permit (Trachinotus falcatus) cultured in sea cages. Four formulated diets with the same nutritional composition (45% protein and 15% lipid) were supplemented with canthaxanthin at 0 mg/kg, 40 mg/kg, 80 mg/kg and 120 mg/kg. Yellow color on the body and fins of the fish was evaluated by colorimetry using Yolk Color Fan. The growth, feed conversion ratio and survival of the fish were not significantly different (P >0,05) after 30 days of culture. However, the yellow color on the body and fins was markedly different among treatments. Fish fed diet supplemented with with 120 mg canthaxanthin/kg had higher yellow scores than those fed control diet (0 mg/kg) and 40 mg/kg diet (P <0,05). There was no difference in color score between treatments supplemented with 0, 40 and 80 mg canthaxanthin/kg. The results showed that supplementation of 120 mg canthaxanthin/kg diet effectively enhanced skin color of permit.