甘南碌曲和合作地区冬夏季高寒天然牧草生产特性、营养成分和饲用价值分析

doi:10.11686/cyxb20140404

草业学报 ›› 2014, Vol. 23 ›› Issue (4): 31-38.DOI: 10.11686/cyxb20140404

甘南碌曲和合作地区冬夏季高寒天然牧草生产特性、营养成分和饲用价值分析

吴发莉¹，王之盛^1*，杨勤²，石红梅²，申俊华¹，胡瑞¹，邹华围¹

1.四川农业大学动物营养所,四川雅安625014
2.甘南藏族自治州畜牧科学研究所,甘肃合作747000

收稿日期:2013-07-16 出版日期:2014-08-20 发布日期:2014-08-20
通讯作者: E-mail:wangzs67@163.com
作者简介:吴发莉(1990-),女,四川资阳人,在读硕士。E-mail:wufali8848@163.com
基金资助:
现代农业产业技术体系项目(CARS-38),农业部公益性行业专项(20090300608)和青藏高原社区畜牧业行业科技项目(201203008)资助

Analysis of growth characteristics, nutritional components and feeding values of native forage grass from the high-cold steppes in the Luqu and Hezuo region of Gannan in summer and winter

WU Fa-li¹,WANG Zhi-sheng¹,YANG Qin²,SHI Hong-mei²,SHEN Jun-hua¹,HU Rui¹,ZOU Hua-wei¹

1.Animal Nutrition Institute of Sichuan Agricultural University,Ya’an 625014,China;
2.Institute of Animal Husbandry,Gannan Tibetan Autonomous Prefecture,Hezuo 747000,China

Received:2013-07-16 Online:2014-08-20 Published:2014-08-20

摘要/Abstract

摘要： 为了研究甘南碌曲和合作地区冬夏季节高寒天然牧草的生产特性、营养成分和饲用价值,试验通过化学分析法结合牧草品质评定预测公式,采用对比试验设计,试验处理为4种来自甘南碌曲和合作的夏季和冬季牧草,分别记为碌曲夏季牧草、碌曲冬季牧草、合作夏季牧草、合作冬季牧草。结果表明,无论碌曲还是合作,夏季牧草粗蛋白(CP)、总磷(TP)含量和干物质采食量(DMI)、可消化干物质量(DDM)、粗饲料相对值(RFV)、有机物质消化率(OMD)以及产鲜草量总体上都显著高于冬季牧草(P<0.05),粗纤维(CF)、中性洗涤纤维(NDF)、酸性洗涤纤维(ADF)、纤维素(C)含量、钙磷比(Ca/TP)都显著低于冬季牧草(P<0.05)。合作冬季牧草的半纤维素(HC)、无氮浸出物(NFE)含量显著低于其他牧草(P<0.05),钙磷比(Ca/TP)、酸性洗涤木质素(ADL)含量显著高于碌曲牧草(P<0.05)。夏季时合作牧草干物质采食量(DMI)、粗饲料相对值(RFV)显著高于碌曲牧草(P<0.05)。这表明甘南高寒天然牧草的营养成分、生产特性、饲用价值夏季牧草明显优于冬季牧草,碌曲牧草优于合作牧草。

Abstract: The growth characteristics,nutritional components and feeding value of the native forage grass from high-cold steppes (Luqu and Hezuo region of Gannan) in winter and summer were studied using four kinds of forage grass for chemical analysis and prediction models were made of forage quality evaluation in a comparison experimental design. Treatments were: forage grass from Luqu in summer (LQX),from Luqu in winter (LQD),from Hezuo in summer (HZX),and from Hezuo in winter (HZD). Compared with winter,forage grass from the two regions in summer (HZX,LQX) had higher crude protein,total phosphorus (TP),dry matter intake (DMI),digestible dry matter,relative feed value (RFV),organic matter digestibility and fresh forage yield (P<0.05). However,they were lower in crude fibre,neutral detergent fiber,acid detergent fiber,and the ratio of Ca/TP than that in winter (HZD,LQD) (P<0.05). In winter,the ratio of Ca/TP and acid detergent lignin in the forage grass from Luqu (LQD,LQX) was lower than that from Hezuo (HZD,HZX) (P<0.05) and the forage grass from Hezuo (HZD) had lower hemicellulose HC and amount of nitrogen free extract than other kinds of forage grass (P<0.05). In summer,DMI and RFV of the forage grass from Hezuo (HZX) were significantly higher than those from Luqu (LQX) (P<0.05). Growth characteristics,nutritional components,and feeding value of the forage grass from Gannan in summer were better than that in winter,and the forage grass from Luqu was better than that from Hezuo in high-cold steppes (Gannan region).

中图分类号:

S816.1

吴发莉，王之盛，杨勤，石红梅，申俊华，胡瑞，邹华围. 甘南碌曲和合作地区冬夏季高寒天然牧草生产特性、营养成分和饲用价值分析[J]. 草业学报, 2014, 23(4): 31-38.

WU Fa-li,WANG Zhi-sheng,YANG Qin,SHI Hong-mei,SHEN Jun-hua,HU Rui,ZOU Hua-wei. Analysis of growth characteristics, nutritional components and feeding values of native forage grass from the high-cold steppes in the Luqu and Hezuo region of Gannan in summer and winter[J]. Acta Prataculturae Sinica, 2014, 23(4): 31-38.

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甘南碌曲和合作地区冬夏季高寒天然牧草生产特性、营养成分和饲用价值分析

Analysis of growth characteristics, nutritional components and feeding values of native forage grass from the high-cold steppes in the Luqu and Hezuo region of Gannan in summer and winter

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