Partovi Edris, Rouzbehan Yousef, Fazaeli Hasan, Rezaei Javad
Department of Animal Science, Faculty of Agriculture, Tarbiat Modares University, Tehran, Iran.
Animal Science Research Institute of Iran, Agricultural Research, Education and Extension Organization, Karaj, Iran.
Transl Anim Sci. 2020 Jul 20;4(3):txaa078. doi: 10.1093/tas/txaa078. eCollection 2020 Jul.
The effect of feeding broccoli byproduct-wheat straw silage [BBWS; 69:31 ratio, dry matter (DM) basis] on performance, microbial N synthesis (MNS), rumen, and blood parameters in Fashandy lambs were evaluated. Three diets, with equal metabolizable energy and crude protein (CP) with a forage to concentrate ratio of 27:73 (DM basis), were formulated in which forage (lucerne and wheat straw) was replaced by BBWS (0, 100, or 200 g/kg of diet DM). These were assigned to three groups ( = 15/group) in a completely randomized block design for a 70-d period in which diets were offered as a total mixed ration. For each animal, dry matter intake (DMI), average daily gain (ADG), in vivo apparent digestibility, MNS, N retention, rumen, and blood parameters were measured. The BBWS diets had no influence on DMI, ADG, feed conversion efficiency, in vivo apparent digestibility coefficients of DM, organic matter, CP, and ash-free neutral detergent fiber. Neither MNS and N retention nor serum concentrations of glucose, triglycerides, creatinine, cholesterol, urea N, triiodothyronine, thyroxine, total protein, albumin, and globulin were affected. Rumen pH, NH-N, short-chain fatty acid concentrations, the ratio of acetic to propionic acid, and protozoa numbers were, also, not influenced. In summary, BBWS may be fed to Fashandy lambs up to 200 g/kg of diet DM without any adverse impacts on growth performance.
评估了用西兰花副产品-小麦秸秆青贮料[BBWS；干物质（DM）基础上69:31的比例]饲喂法尚迪羔羊对其生产性能、微生物氮合成（MNS）、瘤胃和血液参数的影响。配制了三种日粮，它们的代谢能和粗蛋白（CP）相等，饲草与精料比为27:73（DM基础），其中饲草（苜蓿和小麦秸秆）被BBWS替代（0、100或200克/千克日粮DM）。在完全随机区组设计中，将这些日粮分配给三组（每组n = 15），为期70天，日粮以全混合日粮形式提供。测量每只动物的干物质摄入量（DMI）、平均日增重（ADG）、体内表观消化率、MNS、氮保留、瘤胃和血液参数。BBWS日粮对DMI、ADG、饲料转化效率、DM、有机物、CP和无灰中性洗涤纤维的体内表观消化率系数没有影响。MNS和氮保留以及血清葡萄糖、甘油三酯、肌酐、胆固醇、尿素氮、三碘甲状腺原氨酸、甲状腺素、总蛋白、白蛋白和球蛋白的浓度均未受影响。瘤胃pH值、氨氮、短链脂肪酸浓度、乙酸与丙酸的比例以及原虫数量也未受影响。总之，BBWS可以以高达200克/千克日粮DM的量饲喂法尚迪羔羊，而不会对生长性能产生任何不利影响。
