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草业学报 ›› 2013, Vol. 22 ›› Issue (4): 83-88.DOI: 10.11686/cyxb20130410

• 研究论文 • 上一篇    下一篇

稻草饲用品质及茎秆形态特征的研究

董臣飞1,丁成龙1,许能祥1,程云辉1,沈益新2,顾洪如1*   

  1. 1.江苏省农业科学院畜牧研究所,江苏 南京 210014;
    2.南京农业大学动物科技学院,江苏 南京 210095
  • 出版日期:2013-08-20 发布日期:2013-08-20
  • 通讯作者: E-mail:guhongru@aliyun.com
  • 作者简介:董臣飞(1981-),女,山东青岛人,助理研究员,博士。E-mail:cfdong1981@126.com
  • 基金资助:
    国家科技支撑计划项目(2012BAD12B00),江苏省农业科技自主创新资金项目[CX(12)1002],国家牧草产业技术体系盐城综合试验站项目(CARS-35-31)和江苏省科技支撑计划项目(BE2011400)资助。

Research on the feeding quality and related stem morphological traits of rice (Oryza sativa) straw

DONG Chen-fei1, DING Cheng-long1, XU Neng-xiang1, CHENG Yun-hui1,
SHEN Yi-xin2, GU Hong-ru1   

  1. 1.Institute of Animal Science, Jiangsu Academy of Agricultural Sciences, Nanjing 210014, China;
    2.College of Animal Science and Technology, Nanjing Agricultural University, Nanjing 210095, China
  • Online:2013-08-20 Published:2013-08-20

摘要: 本研究利用江苏地区9个常用水稻品种(盐稻830、武育粳3号、南粳44、镇稻10号、武香粳14、南粳46、南粳47、南粳5055和两优培九),研究了不同品种类型间稻草饲用品质的差异及与之相关的茎秆形态特征,为在常用水稻品种中快速筛选稻草饲用品质优良的品种提供依据。田间试验于2011年在江苏省农业科学院水稻试验田(南京)进行。各品种成熟收获时选取长势一致的50个分蘖,去穗,测定单穗重。选取3个分蘖对倒3节茎秆进行徒手切片,观测如茎粗、茎壁厚、机械组织面积比例、薄壁组织面积比例、维管束面积比例、茎壁厚/茎粗等指标。其余分蘖剪碎烘干并测定非结构性碳水化合物(NSC)、粗蛋白(CP)、酸性洗涤纤维(ADF)和干物质体外消化率(IVDMD)等饲用品质相关性状。将稻草饲用品质和茎秆形态特征进行相关性分析。结果表明,不同品种类型间稻草饲用品质差异显著(P<0.01);小穗型品种武育粳3号和超级稻品种南粳44稻草中的NSC含量较高,ADF含量较低,IVDMD较高;晚熟型粳稻品种南粳46和南粳47稻草中的NSC含量较低,ADF含量较高,IVDMD也较低;茎粗与单穗重、NSC含量和IVDMD极显著正相关(P<0.01),可作为快速筛选稻草饲用品质的形态指标。

Abstract: To investigate the feeding quality and the related stem morphological traits of rice (Oryza sativa) straw, eight japonica rice cultivars (Wuyujing 3, Yandao 830, Nanjing 44, Nanjing 46, Nanjing 47, Nanjing 5055, Wuxiangjing 14 and Zhendao 10) and one indica rice cultivar (Liangyoupeijiu) were cultivated in Nanjing under a common management schedule in 2011. At harvest, 50 tillers (with panicles removed to determine one-panicle weight) were used to investigate the feeding quality parameters such as nonstructural carbohydrates (NSC), crude protein (CP), acid detergent fiber (ADF) contents and in vitro dry matter digestibility (IVDMD). The top third node of stem was observed for morphological characteristics such as the stem diameter (CD), wall thickness (WT), the percentage of mechanical tissues area (MTA), vascular bundle area (VBA) and parenchyma area in stem and the rate between WT and CD. The feeding qualities of cultural varieties were significantly (P<0.01) different, and NSC content and IVDMD of small ear type Wuyujing 3 and the super rice cultivar Nanjing 44 were high, while those of the late maturing varieties Nanjing 46 and Nanjing 47 were low. CD was significantly (P<0.01) positively correlated with NSC content and IVDMD of rice straw, and also with the one-panicle weight (P<0.01), which could be used as a selection trait for more digestible rice straw.

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