By creating a good living environment, providing nutritious food, and vaccinating pigs against common infectious diseases, some diseases can be easily prevented. To prevent diseases in pigs, there is nothing better than vaccinating against infectious diseases caused by germs and bacteria such as ...
Figure 3.46 shows the experimental results showing that the density of nitrite-metabolizing bacteria (NOB) fluctuated from 10 2 CFU/mL – 10 5 CFU/mL after 30 days of shrimp farming. In the control treatment, NOB bacteria appeared at the 4th sampling time (13 days after farming), with a density of ...
Table 2.8: Descriptive statistics on clam farming activities in the survey sample Medium Deviation standard Small value best Great value best Area (ha) 2.6 2.1 1 15 Yield/1ha (tons) 22.5 7.5 15 25 Age of pond (years) 7.4 3.7 2 16 Investment cost (VND/ha) 15,000,000 - 10,000,000 25,000,000 Seed cost ...
Less effective to marine shrimp farming. Shrimp farming output gradually increased, in which Long An had the largest increase rate, followed by Tra Vinh and Soc Trang (Table 2.3). Table 2.2: Shrimp farming area of the Mekong Delta (1999-2005) (ha) Conscious 1999 2000 2001 2002 2003 2004 2005 ...
Forestry University (1990 – 1999) [20] conducted research Biological and ecological characteristics and the ability to cultivate the species: Nghiến, May sao, Trai ly, Hoàng đàn, Dầu choòng (Mắc rac) (Delavaya toxocarpa Franch ) , Xoan nhu, Mac mat. in some northern and central border ...
People. But with the effort to overcome difficulties, try to access and use water resources to improve income, it has somewhat affected the income of people in the area. Areas with different access conditions to water sources have known how to cultivate suitable crops to generate income. However, ...
Feeding amount of 500 - 650 tons/ha/crop is suitable and brings high economic efficiency. Pangasius farming time from 5 to 6 months is highly effective in terms of economy and technique. Increasing farming time does not bring high efficiency because it requires more feed, increasing feed conversion ...
- Create stable income through forest protection and development, planting agricultural and forestry trees on areas that would otherwise be fallow and inefficient. - After 10 years, the planted forest area increased by more than 4,000 hectares. - Peoples lives have improved significantly. The ...
INDEX Title page i Thanks ii Commitment iii Summary iv Summary Table of Contents viii List of abbreviations xiv List of tables xv List of Figures xvii INTRODUCTION 1 CHAPTER 1 OVERVIEW OF DOCUMENTS 5 1.1. Overview of lobster cage farming situation 5 1.2. Current status of water pollution in lobster ...
