右江鹅早期生长发育规律及生长曲线拟合  

Early growth pattern and growth curve fitting of Youjiang geese

作　　者：王宏宁 赵洪昌 王健[2,3] 龚道清 WANG Hongning;ZHAO Hongchang;WANG Jian;GONG Daoqing(College of Animal Science and Technology,Yangzhou University,Yangzhou 225001,China;Jiangsu Agri-animal Husbandry Vocational College,Taizhou 225300,China;National Waterfowl Gene Pool(Jiangsu),Taizhou 225300,China)

机构地区：[1]扬州大学动物科学与技术学院,江苏扬州225001 [2]江苏农牧科技职业学院,江苏泰州225300 [3]国家水禽基因库(江苏),江苏泰州225300

出　　处：《黑龙江畜牧兽医》2024年第24期56-61,共6页Heilongjiang Animal Science And veterinary Medicine

基　　金：江苏省种业振兴“揭榜挂帅”项目(JBGS[2021]030);江苏省科技计划专项(BE2022359)。

摘　　要：为了了解右江鹅早期生长发育规律,试验测定了120只右江鹅(公母各半)的0,2,4,6,8,10周龄的体重,比较分析了不同周龄右江鹅公母鹅的体重差异情况,并利用Gompertz、Logistic、Von Bertalanffy三种非线性生长模型对右江鹅0~10周龄体重进行生长曲线拟合,根据模型参数预测极限体重、拐点体重、拐点周龄和最大周增重,获取各周龄的体重拟合值,与实际测定体重进行比较分析,筛选最适生长预测模型;计算各周龄实际测定体重和最适生长预测模型拟合体重的累积生长、绝对生长(生长速度)、相对生长(生长强度),并进行比较分析。结果表明:右江鹅公母鹅前期体重(0~6周龄)差异不显著(P>0.05),但公鹅体重高于母鹅,并且随着生长周期的增长差距逐渐增大,在8,10周龄时公鹅体重显著高于母鹅(P<0.05)。Gompertz模型为右江鹅的最佳生长曲线拟合模型,预测的拐点周龄分别为4.3,3.7周龄,拐点体重分别为1182.30,954.95 g,最大周增重分别为334.59,320.86 g,极限体重分别为3213.82,2595.82 g。右江鹅公母鹅的生长速度均呈前期上升、中期达到顶峰、后期下降的趋势。公母鹅生长强度在1周龄时最大,然后迅速下降,到后期下降速度减慢;4周龄及以前母鹅的生长强度大于公鹅,且下降速度也大于公鹅;4周龄后公鹅的生长强度大于母鹅,下降速度比母鹅慢。说明最适拟合右江鹅生长曲线的模型为Gompertz模型,且公母鹅的快速生长阶段时间跨度不同,在实际饲养管理中应做出相应的调整。In order to understand the early growth and development pattern of Youjiang geese,in the experiment,120 Youjiang geese were studied and their body weights at 0,2,4,6,8 and 10 weeks of age were determined;the differences in body weights between male and female Youjiang geese at different ages were compared and analyzed,and the growth curves of Youjiang geese at 0-10 weeks of age were fitted using three nonlinear growth models,namely Gompertz,Logistic and Von Bertalanffy.Based on the model parameters,the limit weight,inflection point weight,inflection point age and maximum weekly weight gain were predicated;the fitted values of weight at each week of age were abtained,compare and analyze with the actual measured weight,to screen for the most suitable growth prediction model;then calculated the cumulative growth,absolute growth(growth rate),and relative growth(growth intensity)of the actual measured weight at each week of age and the fitted weight of the optimal growth prediction model were calculated for comparative analysis.The results showed that the difference between male and female Youjiang geese was not significant(P>0.05)in their pre-growth body weights(0-6 weeks of age);however,male geese had higher body weights than female geese and the difference gradually increased with the growth cycle;and at 8 and 10 weeks of age,the body weights of male geese were significantly higher than those of female geese(P<0.05).The Gompertz model was the best growth curve fitting model for Youjiang geese;the predicted inflection points were 4.3 and 3.7 weeks of age;the inflection point weights were 1182.30 and 954.95 g;the maximum weekly weight gain was 334.59 and 320.86 g;and the limiting body weights were 3213.82 and 2595.82 g.The growth rate of both male and female Youjiang geese showed a trend of rising in the first period,peaking in the middle and declining in the later period;the growth intensity of male and female geese was the largest at the age of 1 week,and then declined rapidly,and then slowed down in the later peri

关 键 词：右江鹅 生长规律 生长曲线 Gompertz模型 生长速度 生长强度 

分 类 号：S835.4[农业科学—畜牧学]