Illg D J, Sommerfeldt J L, Boe A A
Dairy Science Department, South Dakota State University, Brookings 57007-0647.
J Dairy Sci. 1987 Oct;70(10):2181-5. doi: 10.3168/jds.S0022-0302(87)80272-2.
Twelve Holstein heifers (average weight 270 kg) were randomly assigned to one of four diets to evaluate the feeding value of chickpeas. Total mixed diets were composed of (dry matter) 40% concentrate mix, 24.5% chopped alfalfa hay, and 35.5% corn silage. Concentrate mixes contained 0, 25, 50, and 75% chickpeas in place of corn and soybean meal. Diets were fed individually for 80 d. Average daily gains (.98, 1.13, 1.14, and .95 kg) were higher for heifers fed 25 and 50% chickpeas than for those fed 0 and 75% chickpeas. Feed per gain (4.72, 4.05, 3.65, and 4.01 kg/kg) was lower for all diets containing chickpeas. Dry matter intake was lowest for heifers fed 75% chickpeas, and dry matter intake as percent of body weight was similar for all groups. Ruminal ammonia, pH, total volatile fatty acid concentrations, and ratio of acetate to propionate were similar for all diets. Serum urea and rumen parameters displayed no trends between diets. Chickpeas were an acceptable replacement for corn and soybean meal in growing heifer diets.
12头荷斯坦小母牛(平均体重270千克)被随机分配到四种日粮中的一种,以评估鹰嘴豆的饲喂价值。全混合日粮由(干物质)40%的精料混合料、24.5%的切碎苜蓿干草和35.5%的玉米青贮组成。精料混合料分别含有0%、25%、50%和75%的鹰嘴豆,取代了玉米和豆粕。日粮单独饲喂80天。饲喂25%和50%鹰嘴豆的小母牛平均日增重(分别为0.98、1.13、1.14和0.95千克)高于饲喂0%和75%鹰嘴豆的小母牛。所有含鹰嘴豆的日粮的料重比(分别为4.72、4.05、3.65和4.01千克/千克)均较低。饲喂75%鹰嘴豆的小母牛干物质采食量最低,且所有组的干物质采食量占体重的百分比相似。所有日粮的瘤胃氨、pH值、总挥发性脂肪酸浓度以及乙酸与丙酸的比例均相似。日粮之间血清尿素和瘤胃参数无变化趋势。在生长小母牛日粮中,鹰嘴豆是玉米和豆粕的可接受替代品。