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首页> 外文期刊>Tropical Animal Health and Production >Effect of increasing levels of white mulberry leaves (Morus alba) on ruminal dry matter degradability in lambs
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Effect of increasing levels of white mulberry leaves (Morus alba) on ruminal dry matter degradability in lambs

机译：桑叶含量增加对羔羊瘤胃干物质降解性的影响

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A study was conducted to estimate dry matter (DM) degradability in the rumen of lambs offered a basal soybean meal and sorghum grain diet with three levels of white mulberry (WM) leaves (Morus alba). Diets consisted of 90% concentrate and 10% sorghum straw, which was incrementally replaced by WM leaves at 0% (control diet, T1), 2.5% (T2), and 5% (T3) of the total ration. Crude protein (CP) in WM was 21.8% (DM basis). Diets had equal CP (14% DM basis) and metabolizable energy (10.8 MJ/kg DM) content. Three non-castrated Pelibuey male lambs fitted with permanent rumen cannula were utilized in a 3 x 3 Latin square design. Each experimental period consisted of 10 days of adaptation followed by sampling. DM degradability was determined using the nylon bag technique. Bags contained the experimental diets offered in each period and were incubated in rumen in pairs for 4, 8, 12, 24, and 48 h. The potential degradation was higher (P < 0.05) for T2, followed by T3 and T1. WM level did not influence the degradation rate or the effective degradation at the three passage rates modeled. It was concluded that WM forage may have useful application in feedlot diets for growing lambs, as this forage increases potential degradation of high-grain diets. The incorporation of WM in diets for feedlot lambs in tropics may reduce the use of expensive conventional protein supplements.
机译：进行了一项研究，以估计羔羊瘤胃中的干物质（DM）降解性，其中提供了基础大豆粉和高粱谷物饮食以及三种桑white（WM）叶水平（Morus alba）。日粮由90％的精矿和10％的高粱秸秆组成，逐渐被WM叶片代替，分别占总日粮的0％（对照日粮，T1），2.5％（T2）和5％（T3）。 WM中的粗蛋白（CP）为21.8％（以DM为基准）。日粮具有相等的CP（以DM的14％为基准）和可代谢的能量（10.8 MJ / kg DM）。在3 x 3拉丁方形设计中使用了三只配有永久瘤胃插管的未-割Pelibuey雄性羔羊。每个实验期包括10天的适应期，然后进行采样。使用尼龙袋技术确定DM的可降解性。袋子中包含每个时期提供的实验饮食，并在瘤胃中成对孵育4、8、12、24和48小时。 T2的潜在降解更高（P <0.05），随后是T3和T1。在所模拟的三个通过率下，WM水平不影响降解率或有效降解。结论是，WM饲草可能在生长羔羊的饲养场日粮中有用，因为这种饲草会增加高谷物日粮的潜在降解。在热带地区将WM掺入饲育小羊羔的日粮中可能会减少昂贵的常规蛋白质补充剂的使用。

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