Benchaar C, Vernay M, Bayourthe C, Moncoulon R
Ecole Nationale Supérieure Agronomique, Laboratoire d'Ingénierie Agronomique, Toulouse, France.
J Dairy Sci. 1994 May;77(5):1360-71. doi: 10.3168/jds.S0022-0302(94)77075-2.
Four lactating cows fitted with ruminal, duodenal, and ileal cannulas were used to determine the effects of extrusion of whole horse beans on ruminal CP degradation and absorption of AA from the small intestine. Diets contained 15% CP, of which 46% was provided by the raw or extruded whole horse beans. Spot samples of duodenal and ileal digesta were collected during a 72-h period. The markers Cr-EDTA, YbCl3, and purines were used for liquid, particulate, and bacteria, respectively. Extruded whole horse beans increased AA flow to the duodenum and disappearance in the small intestine. Diets containing extruded whole horse beans increased availability of total essential AA in the small intestine compared with diets containing raw whole horse beans.
选用4头装有瘤胃、十二指肠和回肠瘘管的泌乳奶牛，以测定全粒马豆挤压处理对瘤胃粗蛋白降解及小肠氨基酸吸收的影响。日粮含15%的粗蛋白，其中46%由生的或挤压处理的全粒马豆提供。在72小时内采集十二指肠和回肠食糜的定点样本。分别使用标记物铬-乙二胺四乙酸（Cr-EDTA）、氯化镱（YbCl3）和嘌呤来标记液体、颗粒和细菌。挤压处理的全粒马豆增加了氨基酸向十二指肠的流量以及在小肠中的消失量。与含生全粒马豆的日粮相比，含挤压处理全粒马豆的日粮提高了小肠中总必需氨基酸的利用率。
