PDF(Pubmed)
Abstract：
This study investigated the effect of co-ensiled rice straw (RS) with whole sugar beet (SB) on lactating cows\' performance. Ensiled rice straw (ERS) as control (CGS) was incorporated with immersed corn grains (CG) for 24 h, while the 2nd and 3rd ensiled RS (LSB and HSB) contained SB substituted of 50 and 100% of CG on an energy basis (total digestible nutrients, TDN), respectively. In the experimental diets, D1, D2, and D3, which include CGS, LSB, and HSB provided ad-libitum, respectively, while a concentrated feed mixture (2% of body weight) was offered. The population of lactic acid bacteria was slightly higher with fed HSB, relative to LSB and CGS. The OM, CP, EE, NFC, and TCH contents of CGS were slightly higher than LSB and HSB, while the opposite happened with the aNDFom, and ADFom contents. The digestibility of DM, OM, aNDFom, and ADFom of the D3 group was higher (P < 0.05) than in D1 and D2. The D3 recorded the highest values (P < 0.05) of silage consumption, and palatability. Milk production, fat-corrected milk (FCM), and energy-corrected milk (ECM) were (P < 0.05) higher for cows fed D3 compared with D1 and D2. Fat, protein, lactose, and total solids were trending on the same track. The feed conversion ratio (FCR) of cows fed diet D3 was better than cows fed D1 diet. The level of glucose in the blood increased (P < 0.05) significantly with feeding on HSB than LSB, which was significantly (P < 0.05) higher compared to CGS. In conclusion, co-ensiling of RS with the whole SB plant consider a good method to improve its nutritional value.
摘要：
本研究调查了青贮稻草（RS）与全甜菜（SB）对泌乳奶牛生产性能的影响。将作为对照（CGS）的秸秆（ERS）与浸入式玉米粒（CG）混合24小时，而第2和第3个青贮RS（LSB和HSB）包含SB，以能量为基础代替50和100％的CG（总的可消化营养素，TDN),分别。在实验饮食中，D1、D2和D3，包括CGS，LSB,HSB提供了随意分配，分别,同时提供浓缩的饲料混合物（体重的2％）。饲喂HSB的乳酸菌种群略高，相对于LSB和CGS。OM,CP,EE,NFC,CGS的TCH含量略高于LSB和HSB，而aNDFom的情况正好相反，和ADFom内容。DM的消化率，OM,aNDFom,D3组ADFom高于D1和D2组(P<0.05)。D3记录了青贮消费量的最高值（P<0.05），和适口性。牛奶生产,脂肪校正牛奶(FCM)，与D1和D2相比，饲喂D3的奶牛和能量校正乳（ECM）更高（P<0.05）。胖,蛋白质，乳糖,和总固体在相同的轨道上。饲喂D3日粮的奶牛的饲料转化率(FCR)优于饲喂D1日粮的奶牛。饲喂HSB的血糖水平明显高于LSB（P<0.05），与CGS相比显著(P<0.05)更高。总之,RS与整个SB工厂的共同青贮认为是提高其营养价值的好方法。
