摘要
In vivo digestibility (eight animals) and solid particles passage rate measured by faecal Cr (four animals fistulated at the rumen) were determined on riverine buffalo bulls and Delle Langhe rams, given four diets at maintenance level (50 g/kg M0.75 per day of dry matter), according to a Latin square design, composed of a factorial combination of high and low NDF and of high and low protein undegradability. The diets were: L-30 = low NDF (530.0 g/kg DM), low undegradability of protein (29.6%, CP = 138.0 g/kg DM); L-40 = low NDF (537.0 g/kg DM), high undegradability of protein (41.0%, CP = 139.0 g/kg DM); H-30 = high NDF (583.0 g/kg DM), low undegradability of protein (28.3%, CP = 128.0 g/kg DM); H-40 = high NDF (NDF = 580.0 g/kg DM), high undegradability of protein (40.0%, CP = 128.0 g/kg DM). The digestibility of organic matter (66.68% vs. 64.32%, P 0.05) and of the other analytical fractions (NSC, NDF, cellulose and hemicelluloses) was significantly higher in buffaloes with the exception of that of crude protein which was similar for the two species. Considering the diets within the species, the increased undegradable protein in the small intestine produces different effects: in the buffalo, it does not positively influence the digestibility of NSC but does increase that of cellulose, on the other hand in sheep it influences the digestibility of NSC. The post-ruminal digestibility of the undegraded protein, both in buffalo and sheep, is higher than that from protein of microbial origin. The passage rate of the marker of the solid particles, through the first compartment, k1 (2.86% h− 1 and 2.54% h− 1 for the buffalo and the sheep) and through the entire intestinal tract, MRT (57.50 and 58.88 h for the buffalo and the sheep) does not show significant differences in the two species. The passage rate of the marker of the solid particles in buffalo rumen, at variance with the structural carbohydrates of the diet, is more variable compared with that of the sheep.
摘要译文
在河豚水牛和Delle Langhe公羊上测定体内消化率（8只动物）和由粪便Cr测定的固体颗粒通过率（在瘤胃中瘘管的4只动物），给予维持水平的4种饮食（50g / kg M 根据拉丁方设计，每天干物质0.75 ，由高NDF和低NDF以及高和低蛋白质不可降解性的因子组合组成。饮食为：L-30 =低NDF（530.0g / kg DM），蛋白质的低可降解性（29.6％，CP = 138.0g / kg DM）; L-40 =低NDF（537.0g / kg DM），蛋白质的高可降解性（41.0％，CP = 139.0g / kg DM）; H-30 =高NDF（583.0g / kg DM），蛋白质的低可降解性（28.3％，CP = 128.0g / kg DM）; H-40 =高NDF（NDF = 580.0g / kg DM），蛋白质的高度不可降解性（40.0％，CP = 128.0g / kg DM）。有机质的消化率（66.68％对比64.32％，P <0.05）和其他分析组分（NSC，NDF，纤维素和半纤维素）在水牛中显着较高，但粗蛋白的消化率与两者相似。种类。考虑到该物种内的饮食，小肠中增加的不可降解蛋白质会产生不同的效果：在水牛中，它不会对NSC的消化率产生积极影响，但会增加纤维素的消化率，另一方面，它会影响绵羊的消化率。 NSC。在水牛和绵羊中，未降解蛋白质的瘤后消化率高于微生物来源的蛋白质。通过第一个隔室的固体颗粒标记物的通过率，水牛和绵羊的k 1（2.86％h -1 和2.54％h - 1 并且通过整个肠道，MRT（水牛和绵羊的57.50和58.88小时）在两个物种中没有显示出显着差异。与绵羊相比，水牛瘤胃中固体颗粒标记物的通过率与饮食的结构碳水化合物不同。
S.Bartocci;S.Terramoccia;. Effect of NDF/undegradable crude protein ratio on in vivo digestibility, particle passage rate in riverine buffaloes compared with sheep[J]. Livestock Science, 2006,104(1-2): 38-45