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이유 후 자돈사로 이동하기 전 분만사에서의 대기 기간이 자돈의 성장성적, 혈액성상, 설사빈도에 미치는 영향
도성호,한태희,홍진수,방림호,박흔동,김유용 경상대학교 농업생명과학연구원 2016 농업생명과학연구 Vol.50 No.6
This experiment was aimed to evaluate the effect of remaining time in farrowing barn afterweaning on growth performance, blood profile and diarrhea incidence in weaning pigs. A totalof 180 crossbred pigs([Yorkshire x Landrace] x Duroc) with an average body weight of 6.77 ±1.395 kg were allotted to 3 treatments in 6 replicates with 10 pigs per pen by a randomizedcomplete block(RCB) design. Treatments included: 1) D0: transition at weaning 2) D3: remainingin farrowing barn during 3 days after weaning 3) D5: remaining in farrowing barn during 5 daysafter weaning. Experimental diet was commercial diets. Throughout the experiment, there was nosignificant difference in growth performance and diarrhea score among treatments and BUN(blood urea nitrogen) concentration among treatments after transition. However, average dailyfeed intake was decreased as There were decreased in BUN concentration before transition asdelayed day was increased. Cortisol concentration after transition was increased as delayed daywas increased. However, there was no significant difference in IgG and IgA concentration. Thisexperiment's result indicate that transition at weaning period has positive effects on and nitrogenutilization and welfare. 본 연구는 이유 후 돈군이동지연이 자돈의 성장, 혈액성상에 미치는 영향을 규명하기 위해 수행되었다. 평균 체중 6.77 ± 1.395kg의 3원 교잡종([Yorkshire × Landrace]) × Duroc) 180두를 공시하였으며, 3처리 6반복 펜 당 10마리씩 성별과 체중에 따라 난괴법으로 배치하였다. 처리구는 1) D0: 이유직후 분만사에서 자돈사로 이동한 처리구, 2) D3: 이유 후 분만사에서 3일 대기한 후 자돈사로 이동한처리구 3) D5: 이유 후 분만사에서 5일 대기한 후 자돈사로 이동한 처리구이다. 실험결과 성장성적과설사지수에서 처리구간 유의적인 차이를 발견하지 못하였다. 혈액성상에서는 이유 직전의 BUN (bloodurea nitrogen) 수치가 분만틀에서 대기하는 기간이 늘어남에 따라 감소하였으며, 이유 후 cortisol 농도에서는 대기하는 기간이 늘어남에 따라 증가하였다. 하지만 면역성상에서는 IgG와 IgA 모두 다 유의적인 차이를 보이지 않았다. 따라서 이유직후에 돈군이동(D0)을 하는 것이 분만틀에서 대기 하는 것보다 자돈의 체내 질소의 이용률이나 이유 후의 동물들의 복지 측면에서 농가에게 더 효율적인 사양시스템인 것으로 사료된다.
Lin Hu Fang,Ying Hai Jin,도성호,홍진수,김병옥,한태희,김유용 아세아·태평양축산학회 2019 Animal Bioscience Vol.32 No.4
Objective: This experiment was conducted to investigate the effect of reducing dietary metabolic energy (ME) and crude protein (CP) levels on growth performance, blood profiles, and nutrient digestibility in weaning pigs. Methods: A total of 240 crossbred pigs (Duroc×[Landrace×Yorkshire]) with an average body weight of 8.67±1.13 kg were used for a 6-week feeding trial. Experimental pigs were allotted to a 2×3 factorial arrangement using a randomized complete block design. The first factor was two levels of dietary ME density (low ME level, 13.40 MJ/kg or high ME level, 13.82 MJ/kg) and the second factor was three dietary CP levels based on subdivision of early and late weaning phases (low CP level, 19.7%/16.9%; middle CP level, 21.7%/18.9%; or high CP level, 23.7%/20.9%). Results: Over the entire experimental period, there were no significant difference in body weight among groups, but a decrease in diet energy level was associated with an increase in average daily feed intake (p = 0.02) and decrease in gain-feed ratio (G:F) ratio (p<0.01). Decreased CP levels in the diet were associated with a linear increase in average daily gain (p< 0.05) and quadratic increase in G:F ratio (p<0.05). In the early weaning period, blood urea nitrogen concentration tended to increase when ME in the diet decreased and decrease when CP level in the diet decreased (p = 0.09, p<0.01, respectively). Total protein concentration tended to increase when CP level was reduced (p = 0.08). In the late weaning period, blood urea nitrogen concentration decreased linearly as CP level decreased (p<0.01). The CP and crude fat digestibility decreased when ME was decreased by 0.42 MJ/kg (p = 0.05, p = 0.01, respectively). The CP digestibility increased linearly as CP level decreased (p = 0.01). Conclusion: A weaning pig diet containing high ME level (13.82 MJ/kg) and low CP level (19.7%/16.9%) can improve pig growth performance and nutrient digestibility.
한태희,홍진수,Lin Hu Fang,도성호,김병옥,김유용 아세아·태평양축산학회 2017 Animal Bioscience Vol.30 No.8
Objective: This study was conducted to evaluate various wheat supplementation levels on growth performance, blood profiles, nutrient digestibility, and pork quality in growing-finishing pigs. Methods: A total of 120 growing pigs ([Yorkshire×Landrace]×Duroc), with an average 27.75± 1.319 kg body weight, were used in growth trial. Pigs were allotted into each treatment by body weight and sex in 4 replicates with 6 pigs per pen in a randomized complete block design. Four-phase feeding programs were used in this experiment. The treatments included the following: i) corn-soybean meal (SBM) – based diet (CON), ii) corn-SBM – based diet+15% of wheat (W15), iii) corn-SBM – based diet+30% of wheat (W30), iv) corn-SBM – based diet+45% of wheat (W45), and 5) corn-SBM–based diet+60% of wheat (W60). Results: There was no significant difference in growth performance among the dietary treatments. However, the gain-to-feed (G:F) ratio tended to increase (quadratic, p<0.08) when the pigs were fed a higher wheat diet during the finishing period. The digestibility of crude ash and fat tended to decrease as the wheat supplementation level increased (p<0.08). The proximate analysis of the longissimus muscle was not affected by the dietary level of wheat. The crude ash content in pork was decreased linearly as the wheat supplementation level increased (p = 0.05). There was no significant difference in the pH level, shear force, water holding capacity, and cooking loss of the pork. In pork and fat, L*, a*, and b* values were not significantly different among dietary treatments. Conclusion: Wheat can be supplemented up to 60% in a growing-finishing pig without detrimental effects on growth and pork quality. The G:F ratio tended to improve in the finishing period by wheat inclusion.