CAJ | 학술논문

本试验选用42头荷斯坦产奶牛分为3组，每组14头。采用完全随机化区组设计进行试验。处理为3种大豆皮替代水平，即：大豆皮分别替代精料中0%(对照)、25%和50%的玉米与小麦麸；区组(4个)为产奶牛的不同胎次和泌乳月。正式试验期12周。结果表明，用大豆皮替代产奶牛精料中0%、25%和50%的玉米和小麦麸，日粮干物质、蛋白质进食量、日产奶量、4%乳脂率校正奶产量、产奶的饲料转化效率、乳蛋白、乳糖、无脂固形物含量均没有明显变化(P>0.20)，乳脂率随大豆皮替代水平的提高呈直线上升趋势(P=0.08)。以大豆皮替代精料中25%和50%玉米与小麦麸饲粮喂奶牛，每千克产奶的饲料成本平均分别降低0.045和0.057元。
본시험선용42두하사탄산내우분위3조，매조14두。채용완전수궤화구조설계진행시험。처리위3충대두피체대수평，즉：대두피분별체대정료중0%(대조)、25%화50%적옥미여소맥부；구조(4개)위산내우적불동태차화비유월。정식시험기12주。결과표명，용대두피체대산내우정료중0%、25%화50%적옥미화소맥부，일량간물질、단백질진식량、일산내량、4%유지솔교정내산량、산내적사료전화효솔、유단백、유당、무지고형물함량균몰유명현변화(P>0.20)，유지솔수대두피체대수평적제고정직선상승추세(P=0.08)。이대두피체대정료중25%화50%옥미여소맥부사량위내우，매천극산내적사료성본평균분별강저0.045화0.057원。
Forty-two lactating Holstein cows were used in a randomized complete block design. Soyhulls (SH) replaced corn and wheat bran in the concentrate mixture at 0%, 25% and 50%, respectively. The experimental period lasted 12 weeks. Replacement of corn and wheat bran with SH had no influence (P>0.1) on dietary DM, CP intake, milk production, 4% fat-corrected milk production, feed efficiency (FCM/kg DM intake), milk protein, lactose and solids-not-fat (SNF) content. Replacing corn and wheat bran with SH in the diet at 25% and 50% tended to increase milk fat content, but decreased the feed cost per kg of 4% FCM yield by 0.045 and 0.057 yuan (RMB), respectively.