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대두의 Extrusion 처리가 물리적 특성 및 질소분해와 소화율에 미치는 영향
고종열(J . Y . Ko),하종규(J . K . Ha),김홍대(H . D . Kim) 한국축산학회 1992 한국축산학회지 Vol.34 No.2
The objective of this exprement was to investigate the effect of extrusion on the physical property and nutritive value. and in sacco nitrogen disappearance and digestibility of soybean in lambs. Results obtained from the present study are summerized as follows: Raw soybean possessed compact morpology with low porosity of thick cell walls. Ultrastructure of soybean meal was somewhat flattened by the processing operation that altered the thickness of cotyledon pieces. Extrusion caused destruction of the cytoplasmic network and align to fibrous structure which simulates meat, and stream-lines in the laminar flow. Cell wall composition (NDF, ADF) was decreased in soybean meal (SBM) and extruded soybean as a results of heat treatment. as compared to raw soybean. Dry matter disappearance from nylon bag was highest for raw soybean (p$lt;0.05) and tended to be lower for SBM and extruded soybean. Nitrogen (N) disappearance was greater for the raw soybean, lowest for SBM and intermediate for the extruded soybean (p$lt;0.05). Addition of soybean oil to the SBM did not influence on N disappearance. Digestibility of nutrients was similar among the soybean sources except for ether extract, which was lower(p$lt;0.05) with SBM diet than these with high fat diets (soybean oil and seed).
대두박 , 대두유 , 생대두 및 Extrusion 처리대두 급여가 면양에 있어 반추위내 대사와 영양소의 장내이동에 미치는 영향
고종열(J . Y . Ko),하종규(J . K . Ha),이남형(N . H . Lee),성기승(K . S . Sung) 한국축산학회 1992 한국축산학회지 Vol.34 No.3
This experiment was conducted to study the effect of feeding soybean meal (SBM), soybean oil plus SBM, raw soybean (RSB) and extruded soybean (ESB) on the nitrogen (N) metabolism in the rumen, organic matter (OM) and nitrogen flow to the abomasum in lambs. Results obtained from the present study are summarized as follows: 1. Ruminal pH, NH₃-N and total volatile fatty acid (VFA) were not affected by soybean sources. Isobutyrate (P$lt;0.01), isovalerate and valerate (P$lt;0.05) were highest for RSB and lower the heat processed diets. There was no dietary effect on ruminal OM digestion and flow to the abomasum, but a consistent trend for higher OM flow with ESB diet was observed compared with RSB diet. Nitrogen retention (% intake) was not affected by treatments and ranged from 39 to 42%, and urinary N excretion was lower for ESB diet. Soybean oil supplementation to the SBM diet tended to decrease N retention. Nitrogen flow and non ammonia nitrogen (NAN) flow to the abomasum were similar among soy-bean sources. Nitrogen composition of rumen bacteria was highest for SBM diet (P$lt;0.05) and levels of essential amino acid, notably lle, Met and Phe, were tended to be higher for SBM diet. Ether extract content in abomasal whole digesta was lowest (P$lt;0.05) with SBM diet, and Met and Asp were highest (P$lt;0.05) with ESB diet.
무기태린 공급제의 이용성에 관한 연구 2 . 사료용 제2인산 칼슘제의 첨가수준이 육계의 성장 , 영양소이용율 , 혈액 및 경골성분에 미치는 영향
한인규,하종규,이기웅,고종열,이돈우 ( In K . Han,J . K . Ha,K . U . Lee,J . Y . Ko,D . W . Lee ) 한국축산학회 1986 한국축산학회지 Vol.28 No.12
This study was carried out to assess effects of various levels of dietary phosphorus on the growth of broiler chicks, nutrient digestion and blood and bone parameters. Various levels of dietary phosphorus were added to experimental dits with dicalcium phosphate. Five treatments (LL; lower, L; low, O; optimum, H; high, HH; higher) having various dicalcium phosphate levels were involved in this trial. Feeding trials as well as metabolic trials and determination of bone and blood parameters were conducted. Of the various levels of phosphorus, a level (Optimum level in present trial) recommended. by NRC resulted in the best performance of chicks regardless of experimental period and modification of dietary ingredients. Parameters of bone, blood and digestibility and utilizability of nutrients were interrelated each other, but had little correlation with growth rate with a few exception.
무기태린 공급제의 이용성에 관한 연구 4 . MAP 의 첨가수준이 면양의 성장 , 영양소이용율 , 혈액성분에 미치는 영향
한인규(I . K . Han),하종규(J . K . Ha),고종열(J . Y . Ko),이기웅(K . U . Lee),이돈우(D . W . Lee) 한국축산학회 1987 한국축산학회지 Vol.29 No.1
Present study was conducted to compare effects of various levels of monoammonium phosphate (MAP) in promoting the growth of lambs, to determine nutrient digestion influenced by MAP levels, and to examine the effect of MAP levels on blood parameters. Various levels of dietary phosphorus were added to experimental diet with monoammonium phosphate. Four levels of MAP used in lamb trial were 0%, 0.4%, 0.8% and 1.2%. Feeding trial as well as metabolic trial and determination of blood parameters were conducted. Results obtained are summarized as follows. 1. Of the four MAP levels used in lambs studies, 0.4% MAP resulted in the best body weight gain. 2. Total feed intake and feed efficiency in sheep fed 0.4% MAP appeared to be higher than those fed 0%, 0.8%o and 1.2%, but differences were not significant. 3. Values of blood Ca, P and urea were erratic and no consistent trends were observed. 4. Increasing MAP levels in sheep diets did not significantly influence nutrient digestibilities and nitrogen retention.