舍饲水牛的自由采食行为及其与瘤胃消化代谢的关系  

VOLUNTARY FEEDING BEHAVIOUR IN RELATION TO DIGESTION AND METABOLISM IN THE RUMEN OF CHINESE WATERBUFFALOES IN HOUSING

作　　者：崔用侠 韩正康[1] 

机构地区：[1]南京农业大学家畜生理研究室

出　　处：《南京农业大学学报》1990年第S1期68-74,共7页Journal of Nanjing Agricultural University

摘　　要：观察4头装置瘤胃瘘管母水牛舍饲的昼夜行为模式.稻草期采食时间平均占昼夜的33.62%,反刍占41.95%,休息占24.85%;青草期的采食时间(38.54%)和休息时间(29.50%)增加,反刍时间(31.96%)减少.然而两期的行为模式较为一致.稻草期休息、采食和反刍时瘤胃运动频率分别为:11.5次/10分钟、17.1次/10分钟和13.6次/分钟;而青草期分别增至为12.2次/10分钟、19.7次/10分钟和16.1次/10分钟.瘤胃内挥发性脂肪酸(TVFA)浓度与全日自由采食量(TVFI)呈正相关(r=0.746、P<0.05),但青草期瘤胃内 TVFA 瞬时浓度与同一时刻的 VFI 趋于负相关(r=-0.67、P<0.10),即 VFA 浓度较低时引起采食.Relationship between the ingestive behaviour and digestion or metabolism in therumen of buffaloes in housing was studied.Main results were shown as follows:(1)The diurnal behaviour pattern for two female buffaloes with permanent ruminalfistula fed ad libitum with rice straw plus a limited concentrates or with herbage was re-corded day-and-night respectively.The percentage of diurnal time in eating averaged33.62% and 38.54%,in rumination averaged 41.95% and 31.96% and in resting about24.85% and 29.50% respectively under above-mentioned two diets.(2)The frequency of ruminal motility corresponded to the condition of eating,rumination and resting in soiling period was 19.7,16.1 and 12.4 times/10 minutesrespectively,being more significantly than the frequency in rice straw period(17.1,12.9and11.4, P<0.01).(3)In the stall-fed experiments,the intimate positive relation(r=0.746,P<0.05)be-tween diurnal voluntary feed intake(VFI)and diurnal average TVFA concentration(mmol/100ml ruminal liquid)were also found.However,during soiling period,instanta-neous value of TVFA was negatively correlated with VFA during the same recording time(r=-0.67,P<0.10).The results showed that under physiological condition,VFI was con-trolled or regulated by TVFA concentration in rumen.

关 键 词：水牛 自由采食行为 瘤胃 消化代谢 

分 类 号：S[农业科学]