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방한태,나재천,유동조,최희철,김민지,박성복,강근호,강환구,김동욱,서옥석 한국가금학회 2008 한국가금학회 정기총회 및 학술발표회 Vol.25 No.-
This study was conducted to investigate the difference of performance of meat-type ducks. A total of one hundred twenty Cherry valley ducks and one hundred twenty F1 ducks were randomly distributed into two treatments with four replicates of 30 birds per replicate for eight weeks. The weight gain was not significantly different but Cherry valley breed was higher than F1 breed. There was no difference among the treatments in feed intake. Feed conversion ratio of 0~8weeks was significantly lower in Cherry valley compared to F1(p<0.05). In conclusion, cherry valley showed positive performance compared to F1.
방한태,최희철,채현석,나재천,강환구,김민지,김동욱,박성복,정선희,서옥석 한국가금학회 2010 한국가금학회 정기총회 및 학술발표회 Vol.27 No.-
This experiment was conducted to investigate the effects of heating system and floor form on housing environment and performance in meat type duck production. PVC pipes in Open floor house-Floor heating system(OF) were covered with concrete under the litter. Loft type house-Direct heating system(LD) was designed duck's droppings to pass floor under 50㎝ spacing. Each treatment had four replicates of 25 birds(Cherry Valley duck breed) each. Feed intake in OD for 6 weeks was significantly lower than Open floor house-Direct heating system(OD) and feed conversion ratio in LD was significantly higher than OF(p<00.5). CO2 and NH3 concentration in OD was higher than OF and LD. Litter moisture contents was reduced in OF than OD. The results of this experiment show that OF and LD systems was useful housing environment for duck production.
베타인 사료의 급여시기가 폭염에 노출된 오리의 짧은 사슬지방산, 혈액 프로파일 및 생산성에 미치는 효과
방한태,황보종,강환구,박병성,Bang, Han-Tae,Hwangbo, Jong,Kang, Hwan-Ku,Park, Byung-Sung 한국응용과학기술학회 2015 한국응용과학기술학회지 Vol.32 No.3
폭염에 노출된 육용오리에서 짧은 사슬지방산(short chain fatty acid, SCFA), 혈액 프로파일 및 생산성에 관한 베타인 800 ppm 함유사료의 급여시기 별 차이를 조사하였다. 오리 (Cherry valley, Anas platyrhynchos) 240 마리를 4처리 3반복(반복 당 20마리)으로 완전임의배치 한 후 42일 간 사육하였다. 4개의 처리구는 C(베타인 무첨가 폭염 대조군), T1(베타인 800 ppm 사료 무제한 급여군), T2(베타인 800 ppm 사료 오전 05:00-10:00, 오후 17:00-20:00 제한급여군), T3(베타인 800 ppm 사료 17:00-10:00 야간 제한급여군)로 구분하였다. 42일령 체중은 T2, T1, T3 순서로 베타인 사료 급여시기 처리구가 폭염 대조군에 비해서 증가하였으나 T1, T3 사이의 유의차는 없었다. 사료요구율은 베타인을 함유하지 않은 사료의 무제한 급여 폭염 대조군이 베타인 사료의 급여시기 처리군에 비해서 높았으나 T1, T2, T3 사이의 유의차는 없었다. PLT, MPV를 제외한 적혈구 및 혈소판의 프로파일은 베타인 함유사료를 급여하는 시기에 따라서 통계적인 유의차가 인정되었다. 혈액 $K^+$를 제외한 $Na^+$, $Cl^-$은 베타인 함유사료를 오전, 오후로 구분하여 급여해준 T2가 다른 두 개의 처리군에 비해서 유의하게 높았다. 혈액 가스는 T2가 다른 두 개의 처리군에 비해서 일반적으로 높은 경향을 보였다. 총 SCFA, 초산, 프로피온산은은 T2가 다른 두 개의 처리군에 비해서 높은 경향을 보였으나 이와 반대로 뷰티르산, 이소뷰티르산, 발레르산, 이소발레르산은 일반적으로 낮았다. 이상의 결과는 폭염에 노출된 오리에서 베타인 800 ppm을 함유하는 사료의 오전 05:00-10:00, 오후 17:00-20:00 급여가 베타인의 약리학적 기작을 통한 성장능력을 개선할 수 있음을 나타낸다. The effects of different feeding times, using a diet containing 800 ppm betaine, on production, blood profile, and the short-chain fatty acid (SCFA), was investigated using 240 Cherry Valley (Anas platyrhynchos) meat ducks exposed to a scorching heat wave. The animals were randomly assigned to four groups, each of which was replicated three times with twenty ducks per replicate. The experimental period was 42 days for each group. Four groups were assigned into C (heat wave control group without betaine), T1 (ad libitum group fed a diet containing 800 ppm betaine), T2 (diet-restricted group fed twice daily between 05:00-10:00 and 17:00-20:00, using a diet containing 800 ppm betaine), and T3 (night-restricted group, fed from 17:00-10:00, with a diet containing 800 ppm betaine). At 42 days, body weight increased in order of T2, T1, T3 compared to the heat wave control group although. However, these differences were not found between the groups of T1 and T3. The heat wave control group, provided an ad libitum diet without betaine (C), showed an elevated feed conversion ratio compared to the groups fed a diet containing betaine. However, these differences were not found between the groups of T1, T2 and T3. RBC and platelet profiles except for PLT and MPV showed statistically significant differences between study groups fed a diet containing betaine. T2 presented significantly higher blood electrolytes $Na^+$ and $Cl^-$ than the other groups. T2 also showed a blood gas level that was generally higher than the other groups. Total SCFA, acetic acid and propionic acid concentration has been the increasing trend in T2, but butyric acid, isobutyric acid and valeric acid concentration has been the decreasing trend in T2 compared to the other groups. It is concluded that the feeding-restricted group, fed two times daily between 05:00-10:00 and 17:00-20:00, with a diet containing 800 ppm betaine may improve growth performance in meat ducks exposed to a scorching heat wave.
국내사육 육용오리의 품종별 생산성 및 도체수율 비교 연구
방한태,강환구,박성복,최희철,채현석,나재천,유동조,김민지,서옥석,이창호,이강현 한국가금학회 2009 한국가금학회 정기총회 및 학술발표회 Vol.26 No.-
This study conducted to investigate the difference of performance and carcass rate in different breeds of meat type duck. A total of one hundred twenty ducks of each breeds (Cherry valley, Grimaud and F1 strain) were randomly distributed three treatments with four replicates of 30 birds per replicate for 8 weeks. Weight gain of Cherry valley was higher significantly compared to F1 and there was not significantly different compared to Grimaud. Feed intake of Grimaud for 0~8weeks was significantly higher compared to Cherry valley and F1. Also Feed conversion ratio of Grimaud for whole period was highest in all treatments. Carcass ratio of Cherry valley and Grimaud was higher than F1. Breast meat ratio was not significantly different but Grimaud was higher than the others.