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계분의 사료가치에 관한 연구 1 . 육성돈에 대한 계분의 사료가치시험
안병홍,김윤환,안동원 ( Byung Hong Ahn,Yoon Hwan Kim,Dong Won Ahn ) 한국축산학회 1977 한국축산학회지 Vol.19 No.4
To investigate the nutritive value of dried poultry waste (DPW) in the growing pig ration, this experiment was carried out for 5 months from May 14, 1975 to October 13, 1975 employing 24 male pigs of Landrace × Birkshire crossbreed weighing an average of 16.7㎏. The level of dried poultry waste added to the growing pig rations was divided into 0, 10, 20, and 30%. The results obtained were as follow; 1. Average daily gain (ADG) of growing pig fed the rations added 0, 10, 20, and 30% of DPW was 597, 556, 553 and 491gm, respectively. Average daily gain of growing pig fed the rations supplemented 30% of DPM was significantly (P$lt;0.05) decreased compared with ADG of growing pig fed with the rations supplemented with 0, 10, and 20% of DPW. 2. Average daily feed intake (ADFI) of growing pig fed with the rations Containg 0, 10, 20, and 30% of DPW was 2290, 2295, 2366 and 2369gm, respectively. ADFI of growing pig fed with the rations Cotaining 20 and 30% of DPW was significantly (P$lt;0.05) higher than that of growing pigs fed with the rations containing, and 10% of DPW. Feed efficiency was progressively decreased as the level of DPW in the growing pig ration was increased. Feed efficiency of growing pig, fed with the ration containing 30% of DPW was significantly (P$lt;0.05) decreased in comparison with that of growing pigs fed with the rations containing, 0, 10, 20% of DPW. 3. In the economical analysis, feed cost required per ㎏ of body weight gain of pig fed with the rations containing 0, 10, 20 and 30% of DPW was 294, 291, 270, and 302 Won, respectively. Feed cost was decreased as the level of DPW was increased till the level of 20%. On the contrary feed cost was increased in the lot fed with 30% of DPW. 4. Date required 90㎏ of body weight after birth was progressively extended as the level of DPW was increased. The average date ranged from 180 to 190. Therefore, according to the results of this experiment, it was concluded that dried poultry waste was able to add till 20% in the growing pig ration.
율무의 사료가치에 관한 연구 2 질소의 시비수준이 율무의 청예수량과 조성분 함량에 미치는 영향
안병홍,김병호,이병오 ( Beong Hong Ahn,Beong Ho Kim,Beong O Lee ) 한국축산학회 1976 한국축산학회지 Vol.18 No.2
To investigate the effect of the fertilization level of nitrogen on the grass height, green yield and chemical composition of Coix lacryma L., this experiment was carried out. The results obtained were as follow; 1. Grass height was 82-90㎝, 185-196㎝ and 186-201㎝ in the 2nd months and 3rd months after seeding and heading stage, respectively. Generally, the grass height increased as the fertilization level of nitrogen was increased. According to the cutting stage, grass height in the 3rd months after seeding and heading stage was higher (p$lt;0.05) than that in the 2nd cutting stage. 2. Green yield per 10 a. was 955-1835㎏, 3325-4608㎏ and 3815-5223㎏ in the 2nd months and 3rd months after seeding and heading stage, respectively. Green yield was greatly (p$lt;0.01) increased as the fertilization level of nitrogen was increased. According to the cutting stage, green yield in the 3rd months after seeding and heading stage was significantly (p$lt;0.01) higher than that in the 2nd months after seeding. 3. In the chemical composition on the dried basis, crude protein was 7.03-16.30% and the crude protein increased as the fertilization level of nitrogen was increased. According to cutting stage, the content of crude protein in the 3rd moths after seeding was lower than that in the 2nd months after seeding. The content of crude fiber was 26.42-37.21% and the crude fiber was not affected by the fertilization level of nitrogen. According to the cutting stage, the content of crude fiber in the 3rd months after seeding was 10% higher than that in the 2nd months after seeding. On the green basis, the content of crude protein was 1.76-3.10% and the crude protein was not affected by the fertilization level of nitrogen. According to the cutting stage, the content of crude protein in the 3rd months after seeding was lower than that in the 2nd months after seeding. The content of crude fiber was 5.02-8.93% and the crude fiber was not affected by the fertilization level of nitrogen.
안병홍 ( B H Ahn ),이병오 ( B O Lee ),김병호 ( B H Kim ) 한국축산학회 1972 한국축산학회지 Vol.14 No.2
This experiment was carried out to investigate the sowing amount of Bromus spp. per 10a. The results obtained were as follows; 1. Shoot length of Bromus spp. for 1st cutting was long in proportion with the increase of sowing amount of Bromus spp. However, shoot length of Bromus spp. for 2nd cutting did not recognize the difference by the increase of sowing amount of Bromus spp. 2. Yield of Bromus spp. for 1st cutting was generally increased in proportion with the increase of sowing amount. However, yield of Bromus spp. for 2nd cutting cannot found the difference by the increase of sowing amount of Bromus spp. 3. According to this experiment, it was found that 3㎏ for 10a was fit for the sowing amount of Bromus spp.
우량야초의 재배법에 관한연구 ( 제1보 . 파종시기 시험 )
안병홍 ( B H Ahn ),김병호 ( B H Kim ) 한국축산학회 1970 한국축산학회지 Vol.12 No.4
This experiment was carried out to investigate the proper period of sowing about three southern type major grasses-Sae (Arun. hir.) Gyuryong (Erag. ferr.) and Nadogirumsae (Both. par.) through March to August, 1970. The sowing period was divided into six period as following; April 8, April 15, April 25, May 5, May 15 and May 25, respectively. The results obtained here were as follows: 1. When the period of sowing was delayed, the growing was poor and also the yield was greatly decreased, 2. The proper time of seeding for Sae (Arun, hir.) and Nadogirumsae (Both. par.) was the midst of April. Also the yield and length of those grasses was greatly improved at this period. Thereafter, it was found that the yield of those grasses was significantly decreased. 3. Gyuryong (Erag. ferr.) seeded at the beginning of April was significantly increased :in the yield of that grass. However, as the sowing period went by, the yield was greatly .decreased. 4. It was suitable for the sowing period for southern type native grasses to seed from the beginning of April to the midst of April in the southern part of Korea (especially Jinju).
안병홍 ( B H Ahn ),이병오 ( B O Lee ),김병호 ( B H Kim ) 한국축산학회 1972 한국축산학회지 Vol.14 No.1
To investigate the sowing date of Bromus spp. in the southern districts of Korea, this experiment was carried out from September, 1970 to July, 1971. The results obtained were as follows; 1. Survival ratio of Bromus spp. was 77.06% to 48.39% according to sowing date and survival percentage of Bromus spp. was decreased in proportion with decrease of sowing date. 2. Shoot length of Bromus spp. according to cutting stage was highest in the treatment sown from the end of Sep. to the beginning of Oct. and range of shoot length was 80-90㎝. 3. Yield influencing by cutting stage and total yield were highest in the treatment sown from the end of Sep. to the beginning of Oct. However, by passing the sowing date, the yield of Bromus spp. was progressively decreased. 4. According to this experiment, it was found that the sowing date of Bromus spp. in the fall was from the end of Sep. to the beginning of Oct. in the southern districts of Korea.