Chen Yinyin, Gong Xiaoxiao, Li Guodong, Lin Miao, Huo Yongjiu, Li Shengli, Zhao Guoqi
College of Animal Science and Technology, Yangzhou University, Yangzhou 225009, China.
College of Animal Science and Technology, China Agricultural University, Beijing 100193, China.
Anim Nutr. 2016 Dec;2(4):318-322. doi: 10.1016/j.aninu.2016.09.004. Epub 2016 Oct 11.
This experiment was conducted to study the effects of dietary alfalfa flavonoids extraction supplemental level on growth performance, organ development and blood biochemical indexes of Yangzhou geese at the age of 28 to 70 days. Two hundred and forty 21-day-old healthy male geese with similar body weight were randomly distributed into 4 groups with 6 replicates per group and 10 geese per replicate. Geese in the control group were fed a basal diet and the others in the experimental groups (groups 1, 2, and 3) were fed experimental diets supplemented with 150, 300 and 450 mg/kg alfalfa flavonoids extraction (the concentration of it was 81%), respectively. The experiment had 7 days for pre-test and 42 days for formal test. The results showed that the final body weight and average daily intake of group 2 were significantly higher than those of other groups ( < 0.05). The average daily gain of group 2 was significantly higher than that in the control group and group 1 ( < 0.05). There was no significant difference in feed-to-gain ratio between each group ( > 0.05). Pre-slaughter live weight, carcass weight, slaughter rate, semi-eviscerated weight, semi-eviscerated rate, eviscerated weight, eviscerated rate, leg muscle weight and leg muscle rate had no significant difference between each group ( > 0.05). The breast muscle weight and ratio of each test group were significantly higher than those in the control group ( < 0.05) and the group 2 was the best. The abdominal fat weight and ratio in the group 1 were significantly higher than those in the control group and group 3 ( < 0.05) and the tibia weight in the group 2 was significantly higher than that in the control group and group 1 ( < 0.05); There were no significant differences in heart weight, liver weight and the gland stomach weight among all groups ( > 0.05). Spleen weight in test groups was significantly higher than that in the control group ( < 0.05). The bursa weight and muscular stomach weight in the group 2 were significantly higher than those in the control group and group 1 ( < 0.05). In serum, total cholesterol, triglycerides, low-density lipoprotein and urea nitrogen in the group 2 were significantly lower comparing with those in the control group ( < 0.05). High-density lipoprotein in the group 2 was significantly higher than that in other groups ( < 0.05). There were no significant differences in total serum protein, albumin, globulin and albumin/globulin among all groups ( > 0.05). Alanine aminotransferase and aspartate transaminase (AST) in groups 2 and 3 were higher than those in the group 1 and control group but not obvious ( > 0.05) and alkaline phosphatase (ALP) in groups 1 and 2 was higher than that in the control group and group 3 ( > 0.05). It is concluded that alfalfa flavonoids extraction added in dietary feed improve the growth performance, organ development and blood biochemical indexes of Yangzhou geese. It is concluded that 300 mg/kg supplemental level of the dietary alfalfa flavonoids extraction is optimal in this experiment.
本试验旨在研究日粮中添加不同水平苜蓿黄酮提取物对28至70日龄扬州鹅生长性能、器官发育及血液生化指标的影响。选取240只体重相近的21日龄健康雄性鹅，随机分为4组，每组6个重复，每个重复10只鹅。对照组饲喂基础日粮，试验组（1组、2组和3组）分别饲喂添加150、300和450 mg/kg苜蓿黄酮提取物（其含量为81%）的试验日粮。试验预试期7天，正试期42天。结果表明，2组的末重和平均日采食量显著高于其他组（P<0.05）。2组的平均日增重显著高于对照组和1组（P<0.05）。各组料重比差异不显著（P>0.05）。各组宰前活重、胴体重、屠宰率、半净膛重、半净膛率、全净膛重、全净膛率、腿肌重和腿肌率差异不显著（P>0.05）。各试验组胸肌重和胸肌率显著高于对照组（P<0.05），其中2组最佳。1组腹脂重和腹脂率显著高于对照组和3组（P<0.05），2组胫骨灰重显著高于对照组和1组（P<0.05）；各组心脏重、肝脏重和腺胃重差异不显著（P>0.05）。试验组脾脏重显著高于对照组（P<0.05）。2组法氏囊重和肌胃重显著高于对照组和1组（P<0.05）。血清中，2组总胆固醇、甘油三酯、低密度脂蛋白和尿素氮显著低于对照组（P<0.05）。2组高密度脂蛋白显著高于其他组（P<0.05）。各组血清总蛋白、白蛋白、球蛋白和白球比差异不显著（P>0.05）。2组和3组谷丙转氨酶和谷草转氨酶（AST）高于1组和对照组，但差异不显著（P>0.05），1组和2组碱性磷酸酶（ALP）高于对照组和3组（P>0.05）。由此得出结论，日粮中添加苜蓿黄酮提取物可改善扬州鹅的生长性能、器官发育及血液生化指标。本试验得出结论，日粮中苜蓿黄酮提取物的最佳添加水平为300 mg/kg。
