摘要
The effects of cassava bioethanol by-product (CEP) and crude palm oil (CPO) on feed intake, nutrient digestibility, and growth performance of yearling heifers were investigated in a 150-day feeding trial. Eighteen, crossbred heifers (Brahman x Thai native) were randomly allotted according to 2 × 3 factorial arrangement. Low or high levels of CEP (15 or 30 % of concentrate, LCEP, or HCEP) were basal treatments and 0, 2, and 4 % CPO were daily top-dressed. Concentrate was supplemented at 1.75 % of body weight (BW) and rice straw offered ad libitum. CEP level had no significance on feed intake. CPO increased roughage intake, concentrate intake, and total feed intake when expressed as %BW/d (P < 0.01) and as metabolic BW (kg0.75/d, P < 0.05). Intakes of dry matter (DM), organic matter (OM), and crude protein (CP) were similar (P > 0.05). Intake of fat increased with higher levels of CPO (P < 0.001). The DM, OM, CP, and EE digestibility of cattle-fed HCEP was lower than LCEP, but adding 4 % CPO increased digestibility. Growth performance was similar for all diets (P > 0.05). We concluded that CEP can be used up to 30 % in the diet, with or without additional fat inclusion.
摘要译文
副产品木薯生物乙醇（CEP）和粗棕榈油（CPO）的采食量，营养物质消化率的影响，和一岁的小母牛生长性能的影响在150天的饲养试验。十八，杂交母牛（婆罗门X泰国本土）根据2被随机分配3因子安排。高或低的水平CEP（精矿，LCEP，或HCEP的15％或30％）的基础护理和0,2和4％CPO是每天最高打扮。浓缩液补充1。的体重（BW）和稻草的75％提供自由采食。 CEP水平对采食量没有什么意义。 CPO增加粗粮的摄入，摄入量集中，和总饲料摄取量时表示为％体重/天（P和粗蛋白（CP）是相似的（P和牛喂养HCEP EE的消化率比LCEP低，但添加4％增加CPO消化率。业绩增长是相似的所有饮食（P我们的结论是，CEP可用于高达30％的饮食，有或没有额外的脂肪包容。
Chirasak Phoemchalard [1] Suthipong Uriyapongson [1] Eric Paul Berg [2]. Effect of cassava bioethanol by-product and crude palm oil in Brahman x Thai native yearling heifer cattle diets: I. Nutrient digestibility and growth performance[J]. Tropical Animal Health and Production, 2014,46(4): 663-668