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

doi:10.11686/cyxb20140404

Abstract

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).

CLC Number:

S816.1

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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