Fujimoto Hiroya, Fujita Nozomi, Takada Ryozo
Graduate School of Science and Technology, Niigata University, Niigata, Japan.
Faculty of Agriculture, Niigata University, Niigata, Japan.
Anim Sci J. 2018 May;89(5):770-776. doi: 10.1111/asj.12991. Epub 2018 Feb 19.
This experiment was conducted to clarify the nutritional functions of rice and phytase addition for broiler chicks. Thirty-six 7-day-old male chicks (ROSS 308 strain) were assigned to one of the four treatment groups: corn- or rice-based diet groups and each diet with added phytase (2000 phytase units/kg diet) groups (corn + P or rice + P groups). The non-phytate phosphorus (npP) content in the diets with added phytase was approximately half of the requirement. Body weight gain and feed intake in the rice group was significantly higher than those in the corn group. Breast and thigh muscle weights and nitrogen retention in the rice group were significantly higher than that in the corn group. Although the efficiency of phosphorus retention (%) in the corn + P group was significantly higher than that in the corn group, no significant difference was observed between the rice and rice + P groups. Liver threonine dehydrogenase activity in the corn group was significantly higher than in the other three groups. These results indicate that rice is superior to corn as a starter diet in broiler chicks, and that phytase action in the rice-based diet was less than that in the corn-based diet.
本实验旨在阐明大米及添加植酸酶对肉仔鸡的营养功能。将36只7日龄雄性雏鸡（ROSS 308品系）分为四个处理组之一：以玉米或大米为基础的日粮组，以及每种日粮添加植酸酶（2000植酸酶单位/千克日粮）的组（玉米+P或大米+P组）。添加植酸酶的日粮中非植酸磷（npP）含量约为需求量的一半。大米组的体重增加和采食量显著高于玉米组。大米组的胸肌和大腿肌肉重量以及氮保留量显著高于玉米组。虽然玉米+P组的磷保留效率（%）显著高于玉米组，但大米组和大米+P组之间未观察到显著差异。玉米组肝脏苏氨酸脱氢酶活性显著高于其他三组。这些结果表明，作为肉仔鸡的开食日粮，大米优于玉米，并且大米日粮中植酸酶的作用小于玉米日粮。
