不同投饲频率对合浦鹅的养分利用和生长性能的影响
Effect of feeding frequency on dietary nutrient utilization and growth of Hepu geese
-
摘要: 目的探讨饲养期间不同投饲频率对鹅的养分利用及生长性能的影响.方法将36羽体重相似的21日龄合浦鹅随机分为两组,每组设3个重复,每重复6羽(3公3母),预饲1周后进行42 d的饲养试验,期间对照组每天分别在8:00、10:00、12:00、14:30、17:00和21:00时投料6次;试验组投料3次,分别在08:00、14:30和21:00.鹅自由采食和饮水.后期同时进行消化代谢试验,试验结束时进行血液生化指标和屠宰性能测定.结果试验前、后期间,两组鹅的日均饲料采食量、日均增重和料重比均无明显差异(P>0.05);试验组鹅的中性洗涤纤维和半纤维素的表观消化率明显优于对照组(P<0.05),其他养分的表观消化率也有高于对照组的趋势,但无显著差异(P>0.05);两组鹅的屠宰性能和血液生化指标也无明显差异(P>0.05).结论在饲养实践中对28日龄后的鹅采用3次投饲是可行的.Abstract: ObjectiveThe objective of this trial was to investigate the effect of feeding frequency on dietary nutrient utilization and growth performance of geese.MethodThirty-six 21-day-old Hepu geese with similar body weight were randomly divided into 2 groups with 3 replicates.Each replicate had 6 geese (3 male and 3 female) and fed in a pen for a feeding trial for 42 days after an adaptive period of a week.The geese in control group were fed 6times daily at 8:00,10:00,12:00,14:30,17:00 and 21:00,but geese in treatment group were just fed 3 times daily at 8:00,14:30 and 21:00.All the geese were provided ad libitum access to the water and feed.The determinations of apparent digestibility of dietary nutrients,serum biochemical parameters and slaughter traits of geese were also conducted in late period of the trial.ResultThe results showed that no difference was found in average daily feed intake,average daily gain and ratio of feed/gain in early period and late period of the trial (P >0.05 ).The apparent digestibility of NDF and hemicelluloses in diet for treatment group was significantly better than that in diet for control group (P<0.05).The other nutrients in treatment geese also showed a tendency of higher apparent digestibility than control diet,but no significant difference was found between the two diets through statistical analysis (P>0.05).The serum biochemical parameters and slaughter traits of geese between the two groups had no significant difference either (P>0.05).ConclusionFeeding the geese 3 times a day is feasible after geese age of 28 d in practical geese feeding industry.