鸿雁体尺指标与体质量的相关性研究
2021-07-16杜强韩卫杰郑峰黄晓凤
杜强 韩卫杰 郑峰 黄晓凤



摘要 [目的]探討鸿雁体尺指标与体质量之间的相互关系,揭示其体尺指标对体质量的影响程度。[方法]试验随机选取6月龄鸿雁30只,雌雄各半,测量其体质量(Y)、胫围(X1)、胫长(X2)、胸宽(X3)、胸深(X4)、胸围(X5)、体斜长(X6)、龙骨长(X7),运用SPSS 22.0软件进行体尺指标与体质量的相关分析、通径分析和回归分析。[结果]鸿雁的体尺指标(胫围、胸宽、胸深、胸围、体斜长、龙骨长)与体质量之间存在极显著正相关(P<0.01)。在体尺指标中,对鸿雁体质量的直接作用较大的指标有龙骨长、胸宽、胫围、胸深;大部分指标的直接作用小于间接作用,反映多体尺指标联合效应成为影响鸿雁体质量的主要因素。决定程度分析显示,对鸿雁体尺指标对体质量决定程度较高的体尺指标有龙骨长、胫围、胸宽。以体质量为因变量,体尺指标为自变量,采用逐步线性回归方法建立了回归方程:Y= -2.432+0.146X7+0.371X1+0.124X3(r=0.924,P<0.01)。[结论]该研究结果可为利用鸿雁进行我国家鹅杂交改良提供依据。
关键词 鸿雁;体尺;体质量;相关分析;通径分析
中图分类号 S-865 文献标识码 A 文章编号 0517-6611(2021)11-0088-03
doi:10.3969/j.issn.0517-6611.2021.11.023
开放科学(资源服务)标识码(OSID):
Correlation Analysis between the Body Sizes and Body Weight of Anser cygnoides
DU Qiang1, HAN Wei-jie1,ZHENG Feng2 et al
(1.Jiangxi Academy of Forestry, Nanchang,Jiangxi 330032;2.Forestry Bureau of Fuliang County,Jingdezhen,Jiangxi 333400)
Abstract [Objective] To investigate the correlation between body weight and body size indices of Anser cygnoides, and reveal the influencing degree of body weight and body size indices. [Method]30 heads(half male and half female) of A. cygnoides at 6-month-age were selected randomly as objects. The body weight(Y),shank girth(X1),shank length(X2),chest width(X3),chest depth(X4),chest circumference(X5),body steep length(X6),and keel length(X7) were measured. The phenotypic correlation analysis,path analysis and regression analysis between the body weight and body size indices of A. cygnoides were made by using SPSS 22.0 software. [Result] There were extremely significant positive correlation between body weight and body size indices(shank girth,chest width, chest depth,chest circumference,body steep length,keel length)(P<0.01).Among the body size indices, keel length, chest width,shank girth, and chest depth had greater direct effects on the body weight, and most indices had greater direct effects than indirect effects, which indicated the combined effect of multiple body size indices had become the main factor affecting the body weight of A. cygnoides. The decision analysis showed that the body size indices that had higher degree of determination for the body weight of A. cygnoides were keel length, shank girth and chest width.Taking body weight as dependent variable and body size indices as independent variables,the regression equation was established by using the stepwise linear regression method as Y= -2.432+0.146X7+0.371X1+0.124X3 (r=0.924, P<0.01). [Conclusion] The results of this study could provide the basis for the use of A. cygnoides to improve the goose hybridization in China.
Key words Anser cygnoide;Body size;Body weight;Correlation ananlysis;Path analysis
鸿雁(Anser cygnoides)属于雁形目鸭科雁属水鸟,主要栖息于平原草地上的湖泊、水塘、河流、沼泽及其附近地区,以各种草本植物的叶、芽为食。在我国,鸿雁的繁殖地主要位于黑龙江省、吉林省和内蒙古自治区[1],越冬地主要位于江西、安徽等长江中下游地区。由于其长期生存在野外,鸿雁具有较强的抗病性和觅食能力,且我国家鹅的祖先[2]在外貌特征方面与灰鹅品种相似,可用来与家鹅品种进行杂交育种,改良家鹅的抗病性和放牧等性状。由于鸿雁未经过严格选育,在体质量方面与家鹅相比明显偏小,而体质量是重要的经济性状。笔者对鸿雁影响体质量的体尺指标进行研究,以期为利用鸿雁进行我国家鹅杂交改良提供科学依据。
1 材料与方法
1.1 材料
试验动物来自江西省林业科学院野生动植物保护研究所野生动物驯养基地的6月龄鸿雁群体,随机抽取30只进行体尺指标、体质量测定。……
