为解决发酵床网上肉鸭养殖过程中鸭粪排放导致的污染环境和降解问题,提出一种基于传感器对垫料性能监测系统。利用简单克里金插值法(simple Kriging,SK),研究鸭舍发酵床垫料的温湿度空间分布,并结合发酵床内温湿度实际测量值进行交叉验...为解决发酵床网上肉鸭养殖过程中鸭粪排放导致的污染环境和降解问题,提出一种基于传感器对垫料性能监测系统。利用简单克里金插值法(simple Kriging,SK),研究鸭舍发酵床垫料的温湿度空间分布,并结合发酵床内温湿度实际测量值进行交叉验证。结果表明:鸭舍发酵床垫料温度和湿度的测量值与预测值的均方根误差(root mean squar eerror,RMSE)分别为0.2922℃、0.68,平均偏差(mean bias error,MBE)分别为-0.015℃、-0.017,决定系数(coefficient of determination,R^(2))分别为0.9707、0.9875。整体鸭舍发酵区域集中在设施中部,最高维持在45℃以上,靠近出风口处基本趋于室温,发酵床发酵周期约200h。基于此方法,不仅可以确定发酵床垫料腐熟规律,还可以通过垫料环境分布情况来为发酵床管控提供数据基础。展开更多
[Objective] This study aimed to investigate the effects of different padding on ammonia concentration in broiler house and growth performance and blood indi- cators of broilers. [Method] A total of 480 one-day-old 817...[Objective] This study aimed to investigate the effects of different padding on ammonia concentration in broiler house and growth performance and blood indi- cators of broilers. [Method] A total of 480 one-day-old 817 broilers were selected. They were randomly divided into four groups with different paddings, and each group was in triplicate. The weights of broilers and feed were weighed weekly. The growth performance of broilers was determined. On day 30, the ammonia concentra- tions in broiler houses were determined. On day 35, 6 broilers were randomly se- lected from each group, and their vein blood was sampled. In the sampled vein blood, the concentrations of ammonia, glucose, globulin, serum total protein and urea nitrogen were determined. [Result] There were significant differences in ammo- nia concentration among broiler houses laid with different paddings (P〈0.05). The ammonia concentration in group 1 was significantly lower than those in group 3 and group 4 (P〈0.05). No significant difference was found in ammonia concentrations in broiler houses between group 2 and group 3 (P〉0.05). The ammonia concentration in group 4 was significantly higher than those in group1, group 2 and group 3 (,0〈 0.05). There were also significant differences in blood indicators among different groups (P〈0.05). The blood ammonia, blood glucose and serum urea nitrogen con- centrations in group 1 were significantly lower than those in other groups (P〈0.05), the serum total protein concentration was significantly higher than those in group 3 and group 4 (P〈0.05), and the serum globulin concentration was significantly higher than those in group 2, group 3 and group 4 (P〈0.05). Significant differences were observed in feed intake, body weight gain and slaughter weight between different groups (P〈0.05), but there were no significant differences in feed to grain ratio (P〉 0.05). [Conclusion] Under the experimental conditions, the padding of Chinese medicine residue showed better effect on reducing ammonia concentration in broiler house, which was conducive to play of production potential of broilers.展开更多
文摘为解决发酵床网上肉鸭养殖过程中鸭粪排放导致的污染环境和降解问题,提出一种基于传感器对垫料性能监测系统。利用简单克里金插值法(simple Kriging,SK),研究鸭舍发酵床垫料的温湿度空间分布,并结合发酵床内温湿度实际测量值进行交叉验证。结果表明:鸭舍发酵床垫料温度和湿度的测量值与预测值的均方根误差(root mean squar eerror,RMSE)分别为0.2922℃、0.68,平均偏差(mean bias error,MBE)分别为-0.015℃、-0.017,决定系数(coefficient of determination,R^(2))分别为0.9707、0.9875。整体鸭舍发酵区域集中在设施中部,最高维持在45℃以上,靠近出风口处基本趋于室温,发酵床发酵周期约200h。基于此方法,不仅可以确定发酵床垫料腐熟规律,还可以通过垫料环境分布情况来为发酵床管控提供数据基础。
基金Supported by Innovation Project for Universities and Research Institutes in Jinan City(201303053)Shandong Provincial Science and Technology Plan Project(2014GGH210001)Program of Animal Husbandry and Veterinary Bureau of Shandong Province~~
文摘[Objective] This study aimed to investigate the effects of different padding on ammonia concentration in broiler house and growth performance and blood indi- cators of broilers. [Method] A total of 480 one-day-old 817 broilers were selected. They were randomly divided into four groups with different paddings, and each group was in triplicate. The weights of broilers and feed were weighed weekly. The growth performance of broilers was determined. On day 30, the ammonia concentra- tions in broiler houses were determined. On day 35, 6 broilers were randomly se- lected from each group, and their vein blood was sampled. In the sampled vein blood, the concentrations of ammonia, glucose, globulin, serum total protein and urea nitrogen were determined. [Result] There were significant differences in ammo- nia concentration among broiler houses laid with different paddings (P〈0.05). The ammonia concentration in group 1 was significantly lower than those in group 3 and group 4 (P〈0.05). No significant difference was found in ammonia concentrations in broiler houses between group 2 and group 3 (P〉0.05). The ammonia concentration in group 4 was significantly higher than those in group1, group 2 and group 3 (,0〈 0.05). There were also significant differences in blood indicators among different groups (P〈0.05). The blood ammonia, blood glucose and serum urea nitrogen con- centrations in group 1 were significantly lower than those in other groups (P〈0.05), the serum total protein concentration was significantly higher than those in group 3 and group 4 (P〈0.05), and the serum globulin concentration was significantly higher than those in group 2, group 3 and group 4 (P〈0.05). Significant differences were observed in feed intake, body weight gain and slaughter weight between different groups (P〈0.05), but there were no significant differences in feed to grain ratio (P〉 0.05). [Conclusion] Under the experimental conditions, the padding of Chinese medicine residue showed better effect on reducing ammonia concentration in broiler house, which was conducive to play of production potential of broilers.