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신형태,박윤창 ( Hyung Tai Shin,Yoon Chang Park ) 한국축산학회 1980 한국축산학회지 Vol.22 No.1
Four Korean native male goats, weighing approximately 22㎏ each, were equipped with rumen cannulas to study the effect of different levels of NaOH and Ca(OH)₂ treatments, of rumen suspension time and of different kinds on $quot;nylon bag dry matter digestibility(NBDMD, %)$quot; and $quot;nylon bag organic matter digestibility (NBOMD, %)$quot; of rice straws. The goat was housed individually in pen and was fed 600 grams (concentrate) daily, and fed rice straw and rincal blocks ad libitum. Three grams of dried samples by grinding with 2.45 ㎜ screen (Wiley mill) were put into a bag 9 X 14 ㎝ made of 100 mesh nylon. These bags were put into the ventral sac of the rumen and taken out at the end of 24, 48 and 72 hours (Experiment 1) and 72 hours only (Experiments 2 and 3). They were washed, dried in an oven at 105℃ for 24 hours and weighed $quot;NBDMD`; and ashed in an muffle furnace at 600℃ for 2 hours and weighed $quot;NBOMD`: The results which were obtained with three experiments were as follows 1. Nylon bag dry matter digestibility (NBDMD, %) and Nylon bag organic matter digestibility (NBOMD, %) of NaOH-treated straws were highvl significant different (P $lt;0.01) in different levels of NaOH treatment, of rumen incubation time and of different kinds of rice straws. 2. NBDMD (%) and NBOMD (%) of Ca(OH)₂-treated straws were highly significant different (P$lt;0.01) in different levels of Ca(OH)₂ treatment and of different kinds of rice straws. 3. The relationship between mean NBDMD (%, Y₁) of 5 kinds of rice straws and NaOH concentration (%, X₁) and Ca(OH)₂ concentration (%, X₂) at 72 hour rumen suspension was: Experiment 2 : Y₁=2.93X₁+42.32 (r=0.97**) Experiment 3 : Y₁=1.51X₂+41.36 (r=0.97**) 4. The relationship between mean NBOMD (%, Y₂) of 5 kinds of rice straws and NaOH concentration (%, X₁) and Ca(OH)₂ concentration (%, X₂) at 72 hour rumen suspension was : Experiment 2 : Y₂=2.76X₁+41.32 (r=0.96**) Experiment 3 : Y₂=1.36X₂+41.02 (r=0.95* ) 5 . The orders of NBDMD (%) arid NBOMD (%) for 5 kinds of rice straws were Yooshin, Suwon 264, Milyang 23, Tongil and Akibare. Therefore it is necessary to study more on the utilization of NaOH-treated new-bred rice straws for animal performance than old-bred rice straw as Akibare. 6. The optimal level of NaOH (%) for improving NBDMD and NBOMD from 5 kinds of rice straw on the basis of Dr. McCullough`s theory was as follows : 6 % NaOH for Yooshin, Suwon 264 and Milyang 23 ; 7% NaOH for Tongil and 8% for Akibare. 7. Calcium hydroxide did not improve the NBDMD (%) and NBOMD (%) of rice straws as compared with sodium hydroxide. 8. The NBDMD (%) and NBOMD (%) of 5 kinds of rice straws were about 60% improved by 6 % NaOH treatment as compared with control (0 % NaOH) in this study. This means that 6 % NaOH-treated rice straw has about the same dry matter digestibility as compared with grass hay, so rice straw will be a great roughage resource for Korean dairy industry in the near future.
사료향미소의 첨가가 송아지의 사료섭취량 및 증체율에 미치는 영향
맹원재,신형태,김창원 ( Won Jai Maeng,Hyung Tai Shin,Chang Won Kim ) 한국축산학회 1985 한국축산학회지 Vol.27 No.7
Feed flavor was added to whole milk and to calf starter to determine the effect of feed flavor on the starter consumption and growth of calves. Twenty four calves aged 4 days old were arranged randomized completely to 4 treatments and 6 calves per treatment. Calves received whole milk from birth to weaning at 46 days. Starter was offered ad libitum from day 12 to 46. Feed flavor was added to whole milk ar 120㎎/㎏ and starter at 0.1% Cowmilk Feednectar, 0.05% Sugarmate Feednectar and 0.05% Cowmilk Feednectar + 0.05% Sugamate Feednectar, and the results were summarized as follow: 1. Average birth weight of 24 calves was 42.77㎏ and the growth rate from birth to 46 days old was 0.353㎏ in average. 2. Average daily starter consumption from day 12 to 46 after birth was 310g in control group, 320g in Cowmilk Feednectar, 306g in Sugarmate Feednectar and 319g in Cowmilk Feednectar + Sugarmate Feednectar, respectively. 3. Average dally growth rate of calves from 12 to 46 days old was 417g in control group, 4918 in Cowmilk Feednectar, 4348 in Sugarmate Feednectar and 4378 in Cowmillc Feednectar + Sugamate Feednectar, respectively. Calves received feed flavor in starter gained more weight than those not fed feed flavor. 4. Addition of feed flavor in whole milk encouraged slightly to eat more starter which also contained same feed flavor.
수개관개용수의 (數個灌慨用水) 수질 및 잔류농약의 오염에 관하여
박일현,박윤창,신형태 ( Il Hyun Park,Yoon Chang Park,Hyung Tai Shin ) 한국하천호수학회 1982 생태와 환경 Vol.15 No.3·4
The study of water quality of three rivers and three lakes selected throughout the country was carried out in June, August, December, 1979 and April 1980. Although trace amounts of Hg, Cd, and Cr (VI) were detected in some areas and certain seasons the waters in these areas were found to be good in quality. Moreover, organochlorine pesticides but BHC which was turned out to be dissolved in the waters within 0.05 ppb were not detected at all. Grains collected from several places contained Hg and Cd in the rage of 0.036-0.094 ppm and ND-0.5ppb respectively. In the analysis of grains for organochlorine pesticide residues, the amount of total BHC were within 0.01 ppm and other organochlorine pesticides including heptachlor were not detected. The amounts of heavy metals and pesticide residues in several grains were not affected by kinds of grains and production areas. The heavy metals in fresh fishes were determined as well and they were found to be within allowable limits.