Acta Agrestia Sinica

›› 1995, Vol. 3 ›› Issue (4): 328-332.DOI: 10.11733/j.issn.1007-0435.1995.04.011

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The Effect of Sheep Rotational Grazing Intensities on Forage and Animal Production of Qinghai-Tibet Alpine Rangeland in the Summer and Autumn

Cao Yi1, Tang Maolin2, Bai Zhengqiang3, Li Caiwsng3, Hu Xiaocheng4   

  1. 1.National Lab.for Grassland Biological Control, Sichuan Union University, Chengdu, 610064;
    2.Xiaman Sheep Breeding Farm, Ruergai County, 624503;
    3.Sichuam Crassland Institute, Hongyuan, 624400;
    4.Southwest Nationalities College, Chengdu, 610041
  • Online:1995-11-15 Published:2012-07-11

青藏高寒草地夏秋季不同轮牧强度对牧草及绵羊的影响

曹毅1, 汤茂林2, 柏正强3, 李才旺3, 胡小成4   

  1. 1.四川联合大学草原生物防治工程国家实验室, 成都, 610064;
    2.四川省若尔盖县辖曼种羊场, 若尔盖县, 624503;
    3.四川省草原研究所, 红原县, 624400;
    4.西南民族学院牧医系, 成都, 610041

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Abstract: Summer and autumn grazing intensities of sheep ratation were studied in Xiaman SheepBreeding Farm of Ruergai county in Qinghai-Tibet Alpine Rangeland, Scichuan Province.The productionand nutrition of forage and animal productive performance in different grazing intensities were measured.Theresults show that summer and autumn grazing intensity of sheep rotation should be selected at 7.5 sheep/hastocking rate, and the available forage was 90/ in the rangeland.Significant relationship of liner regression among animal daily increase (DI), daily intake (DIK) andgrazing intensity was getted, Animal daily increase had positive relationship with daily intake and had negative relationship with grazing intensity.The ratio of daily intake protein (DIKP) and daily increase had significant relationship (R=0.999 ) with daily intake and grazing intensity.When grazing intensity was 3.75sheep/ha, the DIKP/DI reached the lowest (0.875).It presented that the using rate of protein was the highest at 3.75 sheep/ha.

Key words: Alpine rangeland, Summer and autumn rotatioral grazing, Daily intake, Daily increase, Animal nutrition

摘要： 本试验是在四川省阿坝州若尔盖县辖曼种羊场进行的。对种羊场的草地进行夏秋季轮牧强度试验,对轮牧小区内牧草产量、营养成份、绵羊生产性能进行测定,结果表明：从保护利用的观点着眼,草地轮牧强度应选择7.5只羊/ha,草地的可利用牧草为90%。日增重与日食量和放牧强度之间存在显著的多元线性回归关系,日增重与采食量呈正比,而与放牧强度呈反比。日采食蛋白与日增重比与日食量和放牧强度之间存在显著的多元线性回归关系,当放牧强度为3.75只羊/ha时日食蛋白与日增重比达到最低,为0.875,即绵羊对蛋白质的利用率最高。

关键词: 高寒草地, 夏季轮牧强度, 日采食量, 日增重, 家畜营养