• Korean Deer Journal
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• no.18
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• pp.2-10
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• 1993

본 시험은 3마리의 2년생 famale sika deer에게 동일한 에너지 수준하에 단백질 함량($7\%,\;12\%\;17\%$)이 각기 다른 사료를 급여하였을 때, 사료 영양소의 이용성 변화 및 체내 N 대사, 유지를 위한 단백질 요구량, 대사성 분질소 함량 등을 규명하기 위하여 실시하였으며, 결과를 요약하면 다음과 같다. 1. DM, OM, ADF의 소화율을 사료내 단백질 함량에 따른 차이를 보이지 않았으며(P>.1), CP의 소화율은 사료내 단백질 수준이 증가함에 따라 향상되었다(P<.05). 2. 사료내 단백질 함량이 증가함에 따라 분과 뇨로의 N 배출량 모두 증가하였으며(P<.05), 사료내 단백질 수준이 7, 12, $17\%$ 이었을 때 N retention은 각각 26.9, 31, 8, $38.9\%$였다. 3. 혈증 urea-N 함량은 사료내 단백질 함량의 증가에 따라 현저하게 증가하였다.(P<.05) 4. Famale sika deer의 유지수준의 단백질요구량(protein requirement for maintenance)은 $1.81g/kgW^{0.75}/d$다. 5. 대사성 분 질소(metabolic facal N)함량은 $0.32g/kgW^{0.75}/d$였다.

• Korean Journal of Poultry Science
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• v.17 no.3
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• pp.157-166
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• 1990

Data are presented concerning the effect of different seasons and sexes during the growing period on broiler performance. Total 38, 451 broiler chickens were raised in spring summer and winter and they were marketed at 6 or 7 weeks of age. Birds were alloted to 118 groups (240∼360 birds per pen) and weighted at termination in order to determine variation in several economic traits between the sex groups. The results obtained were summarized as follows ： 1. The rate of livability of the females were higher than that of the males in all seasons (P＜0.01). 2. Body weights of males were heavier than that of females by 17.4％ at 6 wks, and 19.1％ at 7 wks of age and by 18.0∼19.6％ ,17.6∼18.4％ , and 19.6∼19.3％ in spring, summer, and winter, respectively (P＜0.01). 3. Males consumed more feed than females by 13.3∼135％ . And same trends was noted by season ： 11.7∼13,5％ in spring 175∼15.0％ in summer, and 11.5∼13.0％ in winter. 4. Peed requirement of the females was less than that of the males ： by 5.0∼7.1％, 5.9∼1.0％ , and 5.4∼5.5％ in spring, summer, and winter, respectively (P＜ 0,01). 5. The correlation coefficients between body weight and feed intake in spring were 0.81∼0.87 in males, and 0.84∼0.88 in females and those between body weight and feed requirements were ∼052∼0.51 in males, and -0.17∼-0.45.45 in females. 6. In summer the correlation coefficients between livability and body weight were -0.1∼-0.37 in males, and -0.36∼-0.51 in females, those between body weight and feed intake were 0.66∼0.77 in males, and 0.5∼0.82 in females, and those between body weight and feed requirement were -0.42∼-022 in males, and 0.24∼-0.001 in females. 7. In winter the correlation coefficients between livability and body weight were -0.02∼0.02 in males, -0.18∼-0.19 in females, those between body weight and feed requirements were -0.08∼02 in males, and 0.04∼0.09 in females.

• The Korea Swine Journal
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• v.19 no.12 s.220
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• pp.145-150
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• 1997

• The Korea Swine Journal
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• v.19 no.12 s.220
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• pp.151-153
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• 1997

• Monthly Korean Chicken
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• s.132
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• pp.115-121
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• 2006

• KOREAN POULTRY JOURNAL
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• v.37 no.2 s.424
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• pp.89-90
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• 2005

• Monthly Korean Chicken
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• v.20 no.2
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• pp.86-92
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• 2014

• KOREAN POULTRY JOURNAL
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• v.36 no.11 s.421
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• pp.86-89
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• 2004

• Korean Journal of Poultry Science
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• v.8 no.1
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• pp.37-45
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• 1981

급격히 증가하는 세계의 인구수는 가축의 사료자원을 질이 좋은 인간 식량으로 효율적으로 전환할 필요성을 절실케 하고 있다. 산란계는 유전적인 선택에 의해 최소량의 사료로써 높은 산란율을 유지할 수 있도록 개선되어 왔다. 배합사료의 생산에 사용될 수 있는 단미사료의 종류와 품질은 어느 특정한 영양소의 요구량에 의하여 좌우된다. 산란계의 영양요구량은 오랜동안 연구되어 왔으며, 미국의 국립연구위원회 (NRC)는 영양소 요구량을 정기적으로 검토, 요약하고 있다. 새로운 정보들은 출판되어 왔으며 본인은 여기서 제7차로 개정된 NRC 사양표준(1977)에 발표된 요구량에 관련해서 몇 가지 분야를 검토하고자 한다. (중략)

• Proceedings of the Korea Society of Poultry Science Conference
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• 2002.11a
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• pp.124-125
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• 2002

Two experiments were conducted to investigate the response of chitosan supplementation in diet on the major economic traits of broiler in two different breeds. In the both experiments, the Arbor Acres and Ross breeds were used as experimental stocks and two groups were assigned in each breed. The control group birds(CON) were fed with basal diet only and the experimental group birds(EXP) were fed with basal diet added with 10.5mg chitosan/bird/day. The chitosan was supplied to birds from day-old in experiment 1 and from 15-day-old in experiment 2. In experiment 1, the mean body weight at 35-day-old were significantly(P〈0.05) heavier by 121.2 g and 243.7 g in the EXP groups than in the CON groups of Arbor Acres and Ross, respectively. Whereas, the mean body weights at 35-day-old in experiment 2 were lighter by 91.7 g and 70.2 g in the EXP groups than in the CON groups of Arbor Acres and Ross, respectively : however, the comparisons between breeds in the mean body weight at 35-day-old did not show significant difference in each other in both breeds. In the mean feed conversion ratio of Arbor Acres from 14 to 35-day old in experiment 1, it did not show significant difference between EXP and CON groups although the feed conversion ratio of the EXP group of Ross was significantly higher(P〈0.05) than the CON group. In experiment 2, the feed conversion ratios from 14 to 35-day-old did not show significant differences between the two breeds. The percentage of mean abdominal fat depositions of EXP groups in both breeds In experiment 1 were significantly(P〈0.05) higher than those of CON groups. And the percentage of mean abdominal fat deposition of Ross was significantly(P〈0.05) lower than that of Arbor Acres. In experiment 2, the percentage of mean abdominal fat depositions did not show significant difference between EXP and CON groups in both breeds. Whereas, the interaction effects between breed and experimental groups on the above economic traits did not show significant in both experiments.