日粮中添加发酵玉米秸秆或全株青贮玉米对生长期霍杂肉鹅生长性能和经济效益的影响

Effects of adding fermented corn straw or whole silage corn to feed on growth performance and economic benefit of Huoza meat geese

为了研究日粮中添加发酵玉米秸秆或全株青贮玉米对生长期霍杂肉鹅生长性能和经济效益的影响,试验选择40日龄、体重相近(2.38 kg左右)的健康霍杂肉鹅150只,公母各半,随机均分为5组,分别为对照组和试验Ⅰ组、Ⅱ组、Ⅲ组、Ⅳ组,每组3个重复,每个重复10只。对照组只饲喂基础日粮,试验Ⅰ组、Ⅱ组、Ⅲ组、Ⅳ组分别饲喂含有20%发酵玉米秸秆、20%全株青贮玉米、30%发酵玉米秸秆、30%全株青贮玉米的试验日粮,预试期7 d,试验期30 d,统计日采食量,计算平均日采食量、平均日增重及料重比,并进行经济效益分析。结果表明:整个试验期间(第1~30天),与对照组比较,试验Ⅰ组、Ⅱ组、Ⅲ组和Ⅳ组平均日采食量分别提高了20.81%(P<0.05)、16.79%(P>0.05)、32.16%(P<0.05)和35.60%(P<0.05),试验Ⅲ组比试验Ⅰ组有所提高(P>0.05),试验Ⅳ组比试验Ⅱ组显著提高(P<0.05);与对照组比较,试验Ⅰ组、Ⅱ组和Ⅳ组平均日增重分别提高了13.53%(P>0.05)、23.04%(P<0.05)、12.42%(P>0.05),试验Ⅲ组降低了1.55%(P>0.05),试验Ⅲ组比试验Ⅰ组显著降低(P<0.05),试验Ⅳ组比试验Ⅱ组有所降低(P>0.05);与对照组比较,试验Ⅰ组、Ⅲ组和Ⅳ组料重比均显著提高(P<0.05),试验Ⅱ组有所降低(P>0.05),试验Ⅲ组比试验Ⅰ组显著提高(P<0.05),试验Ⅳ组比试验Ⅱ组显著提高(P<0.05)。所有试验组的经济效益均高于对照组,其中试验Ⅱ组的经济效益最高,平均每只鹅比对照组分别提高了5.85元。说明饲喂含有20%全株青贮玉米的试验日粮能够提高霍杂肉鹅的平均日增重,降低料重比,增加经济效益。

In order to study the effects of adding fermented corn straw or whole silage corn in the feed on growth performance and economic benefits of Huoza meat geese, a total of 150 40-day-old healthy Huoza meat geese(half male and half female) with similar body weight(about 2.38 kg) were selected and randomly divided into five groups: control group, experimental groups Ⅰ, Ⅱ, Ⅲ, and Ⅳ, with 3 replicates in each group and 10 geese in each replicate. The control group was fed a basal diet, and the experimental groups Ⅰ, Ⅱ, Ⅲ, and Ⅳ were fed the experimental diet containing 20% fermented corn straw, 20% whole silage corn, 30% fermented corn straw and 30% whole silage corn, respectively. The prefeeding period lasted for 7 days and the experiment period lasted for 30 days.Daily feed intake was counted, average daily feed intake, average daily gain and ratio of feed to gain were calculated, and economic benefit was analyzed.The results showed as follows: during the whole experiment period(day 1 to 30), compared with the control group, the average daily feed intake in experimental groups Ⅰ, Ⅱ, Ⅲ, and Ⅳ increased by 20.81%(P<0.05), 16.79%(P>0.05), 32.16%(P<0.05) and 35.60%(P<0.05), the average daily feed intake in experimental group Ⅲ was significantly higher than that in experimental group Ⅰ(P>0.05), average daily feed intake in experimental group was significantly higher than that in experimental group Ⅱ(P<0.05).Compared with the control group, the average daily gain in experimental groups Ⅰ, Ⅱ and Ⅳ was increased by 13.53%(P>0.05), 23.04%(P<0.05) and 12.42%(P>0.05), average daily gain in experimental group Ⅲ was decreased by 1.55%(P>0.05), average daily gain in experimental group Ⅲ was significantly lower than that in experimental group Ⅰ(P<0.05), the average daily gain in experimental group Ⅳ was lower than that in experimental group Ⅱ(P>0.05).Compared with the control group, the ratio of feed to gain in experimental groups Ⅰ, Ⅲ and Ⅳwas significantly increased(P<0.05), the ratio of feed to gain in experimental group Ⅱ was decreased(P>0.05), the ratio of feed to gain in experimental group Ⅲ was significantly higher than that in experimental group Ⅰ(P<0.05),the ratio of feed to gain in experimental group Ⅳ was significantly higher than that in experimental group Ⅱ(P<0.05).The economic benefit of all experimental groups was higher than that of the control group, and the economic benefit of experimental group Ⅱ was the highest, with an average increase of 5.85 yuan per goose compared with the control group.The results indicate that feeding the experimental diet containing 20% whole silage corn can increase the average daily gain, decrease the ratio of feed to gain and increase the economic benefit of mixed meat geese.