【摘要】 [目的]研究饲粮中添加不同比例的蜂花粉对杜×长×大生长肥育猪猪肉系水力的影响,以期找到最佳的添加比例。[方法]选取80头体重10 kg左右的杜×长×大三元杂交猪为试验动物,随机分成5组,试验期为120 d。整个试验期不换料,猪只自由取食和饮水,宰前24 h禁食不禁水。使用玉米-豆粕型基础饲粮,第1组为不添加蜂花粉的对照组,第2、3、4和5组分别为添加1%、3%、5%和7%蜂花粉的试验组。屠宰后取眼肌,分别采用快速滤纸法、滴水损失法、烹饪损失法和拿破率测定法测定其系水力。[结果]随着蜂花粉添加比例的增加,猪肉系水力呈现先优后劣的变化趋势。其中,饲粮中添加5%的蜂花粉能够显著降低猪肉的滴水损失和系水力(P<0.05),而对烹饪损失和拿破率的影响不显著。[结论]饲粮中添加蜂花粉可有效改善杜×长×大生长肥育猪肉系水力,其添加比例以饲粮总量的5%为宜。更多还原

【Abstract】 [Objective]To explore the effects of different proportion of bee pollen on the water holding capacity of pork in Duroc × Landrace × Yorkshire growing-finishing pigs in order to determine the optimal proportion.[Method]A total of 80 Duroc × Landrace × Yorkshire growing-finishing pigs,weighing 10 kg,were randomly divided into five groups.The experimental period was 120 d including the 5-day pre-feeding period.The corn-soybean meal was not replaced during the whole period.All pigs had free access to feed and water.The pigs were fasting for 24 h but not prohibited from feed before the beginning.Group Ⅰ was the control group reared with the diet not added bee pollen.The pigs in group Ⅱ,Ⅲ,Ⅳ and Ⅴ were reared with the diet added bee pollen at the concentration of 1%,3%,5% and 7%,respectively.After slaughtering,ophthalmoplegia was used for the determination of water holding capacity through fast filter paper method,drip loss method,cooking loss method and Napole yield determination method.[Result]With the increase of the proportion of bee pollen,the water holding capacity of pork was first good and then poor.The addition of bee pollen at the concentration of 5% significantly reduced the drip loss of pork and the water holding capacity which was detected by fast filter paper method,but the cooking loss and Napole yield were not significantly influenced.[Conclusion]The bee pollen can effectively improve the water holding capacity of pork in Duroc × Landrace × Yorkshire growing-finishing pigs,and the optimal proportion is 5%.更多还原