迷迭香渣对固始白鹅生产性能、脏器系数和血清生化指标的影响OA

[Objective]This experiment was conducted to study the effects of different levels of rosemary residue diet on the production performance,organ coefficient,and serum biochemical indexes of Gushi White geese.[Method]A total of 240 healthy 30-day-old female Gushi White geese with similar weight were selected and divided into 4 groups,with 5 replicates in each group and 12 geese in each replicate.Geese in control group were fed with basic feed,and the experimental group were supplemented with 10.0%,15.0%,and 20.0%rosemary residue as a substitute for rice husk in the basic feed,respectively.The trial period was 60 days.The body weight of each goose and the feed intake of each group were measured on the 15th,30th,45th,and 60th days of the trial period.At the same time,2 geese with body weight close to the average weight were selected for slaughter in each replicate.The organ weights were measured and the organ coefficients were calculated.The production performance and slaughter performance were also statistically analyzed.Blood samples were collected to isolate serum for biochemical indicators.[Result]①The final body weight and average daily gain of geese in 10.0%rosemary residue group were significantly higher than those in control group and 20.0%rosemary residue group(P<0.05),while the feed conversion ratio was significantly lower than that of control group and the other additive groups(P<0.05).The average feed intake of geese in 20.0%rosemary residue group was significantly lower than that in control group and other additive groups(P<0.05).There was no significant difference in slaughter performance of geese in each group(P>0.05).② On the 60th day of the experiment,the semi-submersible length of geese in 10.0%rosemary residue group was significantly greater than that in control group(P<0.05),and the semi-submersible length and shank length were significantly greater than those in 15.0%and 20.0%rosemary residue groups(P<0.05).The breast width of geese in 20.0%rosemary residue group was significantly lower than that in 10.0%and 15.0%additive groups(P<0.05),and there was no significant difference compared with control group(P>0.05).There was no significant difference in organ coefficients of geese among the different rosemary residue groups(P>0.05).③ On the 60th day of the experiment,the content of serum globulin and total protein in 10.0%rosemary residue group was significantly lower than that in control group and other additive groups(P<0.05),and the content of serum albumin was significantly lower than that in 15.0%and 20.0%rosemary residue groups(P<0.05),with no significant difference from control group(P>0.05).Serum uric acid level in 15.0%and 20.0%rosemary residue groups were significantly lower than those in control group(P<0.05).[Conclusion]Under this experimental conditions,adding 10.0%rosemary residue to the diet could improve the production performance of Gushi White geese,adding 20%rosemary residue could reduce the serum uric acid level,and the semi-submersible length,chest width and shin length of Gushi White geese decrease significantly with the increase of the dietary rosemary residue level.