摘要
本文研究了滩羊在宁夏盐池干草原夏季草场上的放牧行为及放牧营养生态。结果表明，同一般的绵羊相比，滩羊在放牧行为上既有相似之处，又有其独特的方面。成年滩羊和当年断奶羔羊的日平均采食速率分别为５３．５口／分和４１．２口／分，日平均采食干物质量分别为１．５１ｋｇ和０．７９ｋｇ。成年滩羊的日平均游走、采食、卧息和反刍时间分别为１４９．１、４０８．０、１０和２．５分，日平均饮水量达６．６８土１．５１ｋｇ／只。成年滩羊和当年断奶羔羊均存在着营养供应不平衡，除粗蛋白摄入量较高外，其能量、钙和磷的摄入量均不足。本文建议，随着滩羊放牧环境日趋干旱、沙化和退化，对于草原草场上放牧的滩羊在夏季进行适当的能量和矿物质饲料补饲，仍然是一分必要的。
The grazing behaviour of Tan sheep and its
nutritional ecology on thesummer pasture of the steppe were investlgated in Yanchi
County,Ningxia Province. Itis showed that the grazing behaviour of Tan sheep is similar to that
of the ordinarysheep in some aspects,and is different from each other in other aspects. The
average dai-ly ingesting rate for adults and weaner lambs are53.5 and 41.26 bites per
minute,theiraverage daily intake of dry matter arel.5l and 0.79kg,respectively. The average
dailytime of walking,ingesting,sleeping and cud chewing for adults are l49.1. 408.0,10.0and 2.5
minutes respectively,its average daily water intake is l6.68士1.51kg per head.There exists
imbanlance of nutritional supplies for adults and weaner lambs. Except thehigher ingestion of
crude protein,the ingestion of energy,calcium and phosphorous areinsufficient to meet the
nutritional needs. It is suggested that the supplements of energyand mineral feed are essential
for Tan sheep grazed on pastures of the steppe in summer,as the ecological environment for
Tan sheep grazing become drier,more desertificated and deteriorated.
出处
《家畜生态》
1994年第2期9-13,共5页
Ecology of Domestic Animal
关键词
滩羊
干草原
放牧行为
营养
Tan
sheep
Steppe:Grazing behaviour
Nutritional balance
