http://anchan.lib.ku.ac.th/agnet/handle/001/1 Search the Channel search http://anchan.lib.ku.ac.th/agnet/simple-search http://anchan.lib.ku.ac.th/agnet/handle/001/5341 Title: แตนเบียนดักแด้แมลงวันบ้าน ประสิทธิภาพและการนำไปใช้ควบคุม โดยชีววิธีในฟาร์มปศุสัตว์; House fly parasitoids: Efficiency and using for biological control in livestock farm<br/><br/>Authors: Ubon Tangkawanit Sun, 01 Jan 2012 00:00:00 GMT http://anchan.lib.ku.ac.th/agnet/handle/001/5340 Title: ผลการใช้กากเนื้อในเมล็ดปาล์มน้ำมันทดแทนข้าวโพดบดในอาหารข้นต่อการใช้ประโยชน์ได้ของโภชนะ และนิเวศวิทยาในกระเพาะรูเมน ของโคพื้นเมืองไทย; Effects of palm kernel cake substitution for ground corn in concentrate on nutrient utilization and rumen ecology of Thai indigenous cattle<br/><br/>Authors: Anantadach Yamhom; Wanwisa Ngampongsai; Pin Chanjula<br/><br/>Abstract: This experiment aimed to study the effects of palm kernel cake (PKC) substitution for ground corn (GC) in concentrate on the utilization of nutrients and on the rumen ecology in Thai indigenous cattle. Five rumen-fistulated native bulls, with an average live weight of 317±21 kg were randomly assigned according to a 5×5 Latin Squares Design to receive five diets containing different levels of PKC (0, 25, 50, 75 and 100%) substitution for GC. Plicatulum hay was offered ad libitum. Based on this experiment, the amount of plicatulum hay intake was linearly increased while the amount of concentrate intake and the total dry matter intake were linearly decreased as a result of an increase in level of PKC substitution for GC in the diet. Digestibility coefficients of dry matter and organic matter of cattle fed with concentrate containing 0, 25 and 50% PKC substitution for GC were not significantly different (P> 0.05) but the digestibility coefficients of dry matter and organic matter of cattle fed with concentrate containing 75 and 100% PKC substitution for GC were slightly decreased. Ammonia – nitrogen concentration, total volatile fatty acid and total protozoa population in the rumen of cattle fed with concentrate containing 75 and 100% PKC substitution for GC were slightly lower than those of 0, 25 and 50% PKC substitution for GC group. However, there were no significant differences (P>0.05) among treatments regarding ruminal fluid pH, the amount of acetic (C2), propionic (C3) and butyric (C4) acid in rumen fluid, bacterial population and fungal zoospores in rumen fluid (P>0.05). Furthermore, nitrogen balance, the amount of ruminal microbial nitrogen supply and the efficiency of microbial nitrogen supply in the rumen were not significantly different when compared with other treatments. Therefore, the level of PKC substitution for GC in the concentrate for indigenous cattle fed with plicatulum hay should not be more than 50%. Sun, 01 Jan 2012 00:00:00 GMT http://anchan.lib.ku.ac.th/agnet/handle/001/5339 Title: Traditional practice of leaf litter harvesting and utilization by farmers in west-central Bhutan: Paving the way for sustainable management<br/><br/>Authors: Rekha Chhetri; Banyong Toomsan; Wanwipa Kaewpradit; Viriya Limpinuntana<br/><br/>Abstract: Forest is an important resource for the farmers in soil fertility management and crop production in Bhutan. The tradition of leaf litter harvesting from the forests has been in practice since time immemorial. However, the continuous leaf litter harvesting has raised concerns on the sustainability of the leaf litter forests (Sokshing). There is a paucity of information about harvesting practices, utilization and management of forests. Hence, the presentstudy was aimed at generating information on how farmers perceive, utilize and manage leaf litter forests. Data were collected from two sub-districts Nahi and Limbukha in west-central Bhutan involving a total of forty farmers, using questionnaires and semi-structured interviews, focus group discussions and personal observations during field visits to the forests. The study found that despite having access to chemical fertilizers, soil fertility management for the farmers is mainly based on the use of leaf litters as farmyard manure (FYM). Given the labour intensive nature of FYM production, aggravated by labour shortages, farmers still preferred FYM over chemical fertilizers. Quercus griffithii, Q. lanata and Pinus spp. were the main leaf litter tree species in the studied areas; Quercus spp. being the most preferred by farmers. The complete removal of litters from the leaf litter forests as revealed by farmers will not only have negative effects on nutrient cycling in the leaf litter forests but also render the exposed ground vulnerable to erosion. During litter harvesting farmers’ clearing the regenerations in leaf litter forests as found in the present study, will exacerbate the already thinly populated litter forests resulting in declining productivity and ultimately the sustainability of leaf litter forests. Traditional practice of leaf litter harvesting will continue for perpetuity for the mountain farmers, therefore, sustainable management practices will have to be found and put in practice based on participatory approaches Sun, 01 Jan 2012 00:00:00 GMT http://anchan.lib.ku.ac.th/agnet/handle/001/5338 Title: เทคโนโลยีการบำบัดดินปนเปื้อนโลหะหนักด้วยวัสดุฟอสเฟต; Remediation technologies of heavy metal contaminated soils using phosphate materials<br/><br/>Authors: Worachart Wisawapiapt Sun, 01 Jan 2012 00:00:00 GMT