 หัวเรื่อง:ไม่มีชื่อไทย (ชื่ออังกฤษ : The Effect of Dry Season Supplementation of Lotus corniculatus Hay on Body and Fleece Weights of Three Sheep Breeds Grazing Natural Pasture under Ethiopian Conditions) ผู้เขียน: Aschalew Tsegahun,  ดร.พรศรี ชัยรัตนายุทธ์, รองศาสตราจารย์ , ดร.ประวีร์ วิชชุลตา, รองศาสตราจารย์ , Sayan Tadsri สื่อสิ่งพิมพ์:pdf AbstractA study was conducted to investigate four levels of Lotus corniculatus hay (0, 100, 200 and 400 g/d/h) on body weight change and fiber characteristic of three dual-purpose sheep breeds of Ethiopia. The sheep were grouped based on their body weight and respective breeds and was assigned to one of the four levels of lotus hay randomly. Growth rate was significantly different (p<0.05) among the feeding levels. Rate of gain for lambs supplemented with 200 gram (5.12 kg) and 400 g lotus hay/day (5.55 kg) were similar and did not differ significantly (p>0.05), but were found to be different than the levels of 100 g lotus hay/day (3.49 kg) and the zero level (1.65 kg). Within breeds, body weight changes were observed AxM breeds gained significantly higher (p<0.05) (5.44 kg) than Menz (4.13 kg) and Tukur (2.31 kg). The live gain between Menz (4.13 kg) and Tukur (2.31 kg) was also significantly different (p<0.05). With regard to fiber characteristics, AxM lambs showed their superiority in all fiber characteristics (p<0.05) than Menz and Tukur sheep while no difference was noted between Menz and Tukur sheep in greasy and clean fiber weights. Any of the lotus levels did not alter any of the fiber characteristics. |
หัวเรื่อง:ไม่มีชื่อไทย (ชื่ออังกฤษ : Inducing Salt Tolerance in Purple Guinea Grass (Panicum maximum TD58) via Gamma Irradiation and Tissue Culture) ผู้เขียน:นายประดิษฐ์ พงศ์ทองคำ, ศาสตราจารย์เกียรติคุณ, สุมล นิลรัตน์นิศากร, Surin Piyachoknakul, นางอมรา ทองปาน, รองศาสตราจารย์, Jantakarn Aranananth, Krisana Kowitwanich, Sayan Tadsri สื่อสิ่งพิมพ์:pdf AbstractThe seeds of Panicum maximum TD58 were cultured on MS medium supplemented with 15% coconut water, 5 mg/l kinetin and 100 mg/l casein hydrolysate to induce multiple shoots. The gamma irradiated shoots grown in 0–2.0 % NaCl gave 58 clones of purple guinea grass. All clones were transferred to grow in the natural field. Ten clones of grass with good morphological properties were selected and subsequently grown in the salt stress environment at Maha Sarakham province, Northeastern Thailand. Under salt stress condition, seven out of ten selected clones showed salt tolerant trait. However, there was no difference in AFLP fingerprinting patterns found as compared with the controlled non-irradiated guinea grass. The salt tolerance character might be due to the mutation at a certain location or on a specific gene which could not be distinctly detected by the available AFLP primers. |