本研究从动物福利的角度出发,探索拴系式饲养与散栏饲养对肉牛屠宰性能及肉品质量的影响。选择体重接近(220±9.78)kg、(9±0.57)月龄、健康无病的16头西门塔尔杂交改良育肥公牛随机分为2组,每组8头牛。拴系式饲养为对照组,散...本研究从动物福利的角度出发,探索拴系式饲养与散栏饲养对肉牛屠宰性能及肉品质量的影响。选择体重接近(220±9.78)kg、(9±0.57)月龄、健康无病的16头西门塔尔杂交改良育肥公牛随机分为2组,每组8头牛。拴系式饲养为对照组,散栏饲养为试验组。预试期为7 d,正试期84 d。结果表明:散养组眼肌面积、熟肉率及肉样超氧化物歧化酶(SOD)含量显著高于拴系组(P<0.05),而宰后1 h pH值以及肾脂和大网膜脂肪重均显著低于拴系组(P<0.05),其他屠宰性能及肉品质指标未出现显著差异(P<0.05)。展开更多
This paper presents a fast algorithm （BS2 Algorithm） for fitting C 1 surfaces to scat- tered data points. By using energy minimization, the bivariate spline space S 2 1（△ m,n （2） ） is introduced to construct a ...This paper presents a fast algorithm （BS2 Algorithm） for fitting C 1 surfaces to scat- tered data points. By using energy minimization, the bivariate spline space S 2 1（△ m,n （2） ） is introduced to construct a Cl-continuous piecewise quadratic surface through a set of irregularly 3D points. Moreover, a multilevel method is also presented. Some experimental results show that the accuracy is satisfactory. Furthermore, the BS2 Algorithm is more suitable for fitting surfaces if the given data points have some measurement errors.展开更多
文摘本研究从动物福利的角度出发,探索拴系式饲养与散栏饲养对肉牛屠宰性能及肉品质量的影响。选择体重接近(220±9.78)kg、(9±0.57)月龄、健康无病的16头西门塔尔杂交改良育肥公牛随机分为2组,每组8头牛。拴系式饲养为对照组,散栏饲养为试验组。预试期为7 d,正试期84 d。结果表明:散养组眼肌面积、熟肉率及肉样超氧化物歧化酶(SOD)含量显著高于拴系组(P<0.05),而宰后1 h pH值以及肾脂和大网膜脂肪重均显著低于拴系组(P<0.05),其他屠宰性能及肉品质指标未出现显著差异(P<0.05)。
基金Acknowledgments. This work was supported by the National Natural Science Foundation of China （Nos. U0935004,11071031,11071037,10801024）, and the Fundamental Funds for the Central Universities. should be changed to Acknowledgments. This work is partly supported by the National Natural Science Foundation of China （Nos. U0935004,11071031,10801024）, the Fundamental Funds for the Central Universities （DUT10ZD112, DUT11LK34）, and National Engineering Research Center of Digital Life, Guangzhou 510006, China.
文摘This paper presents a fast algorithm （BS2 Algorithm） for fitting C 1 surfaces to scat- tered data points. By using energy minimization, the bivariate spline space S 2 1（△ m,n （2） ） is introduced to construct a Cl-continuous piecewise quadratic surface through a set of irregularly 3D points. Moreover, a multilevel method is also presented. Some experimental results show that the accuracy is satisfactory. Furthermore, the BS2 Algorithm is more suitable for fitting surfaces if the given data points have some measurement errors.
