青海藏羊生长发育规律与生长曲线拟合研究

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英文篇名：The growth pattern and simulation of growth curve of Qinghai Tibetan sheep 作者：马朝银 ; 赵索南 ; 周玉青 ; 吉汉忠 ; 杨什布加 ; 曲家鹏 英文作者：MA Chaoyin;ZHAO Suonan;ZHOU Yuqing;JI Hanzhong;Yangshi Bujia;QU Jiapeng;Haibei Institute of Animal Husbandry and Veterinary Science;Haibei State Grassland Station in Qinghai;Northwest Institute of Plateau Biology,Chinese Academy of Sciences/Key Laboratory of Adaptation and Evolution of Plateau Biota;Qinghai Provincial Key Laboratory of Animal Ecological Genomics; 关键词：藏羊 ; 体尺 ; 体重 ; 生长曲线 ; 模型 英文关键词：Tibetan sheep;;body measurements;;weight;;growth curve;;model 中文刊名：黑龙江畜牧兽医 英文刊名：Heilongjiang Animal Science and Veterinary Medicine 机构：海北州畜牧兽医科学研究所;海北州草原工作站;中国科学院西北高原生物研究所/高原生物适应与进化重点实验室;青海省动物生态基因组学重点实验室; 出版日期：2019-06-20 出版单位：黑龙江畜牧兽医 年：2019 期：12 基金：国家自然科学基金面上项目(31770459);; 青海省应用基础研究项目(2017-ZJ-761);; 中国科学院“西部之光”青年学者A类项目;; 青海省“高端创新人才千人计划”项目 语种：中文; 页：47-50 页数：4 CN：23-1205/S ISSN：1004-7034 分类号：S826

摘要

为了了解藏羊的生长发育规律,试验采用Logistic、Gompertz和Von Bertalanffy三种非线性模型对0～6月龄藏羊的体重和体尺进行生长曲线拟合与分析,并探讨初生与断乳期羔羊体质的关联性。结果表明:藏羊在0～6月龄时,不同性别间体重、体尺增长均无显著差异(P>0. 05); Von Bertalanffy模型对体重、体长和胸围的拟合度最高,Gompertz模型对体高的拟合效果最好;体重的时间拐点为1. 52月龄,体重的生长拐点为8. 98 kg;体长、体高、胸围的生长拐点为0. 23～0. 27月龄; 3月龄羔羊的体重与初生体重呈极显著正相关(P<0. 01),3月龄公羊体高与初生体高,以及3月龄母羊胸围与初生胸围均呈显著正相关(P<0. 05)。说明哺乳期是羔羊生长的关键时期,初生体质对断乳期体质具有显著影响。
        In this study,three nonlinear models,Logitic,Gompertz and Von Bertalanffy were used to fit and analyze the growth curve of body weight and body size of Tibetan sheep from the age of 0 to 6 months,correlations of body conditions between birth and weaning lamb were also analyzed. The results showed that there was no significant difference in body weight and body size growth between sexes( P> 0. 05). The Von Bertalanffy model had the best effects on fitting the growth curves of weight,body length and chest circumference,with highest goodness of fitting,while Gompertz model had the best effect on fitting the growth curve of height. The growth inflexion of body weight was 1. 52 months old and the growth inflection point of weight was 8. 98 kg,while the growth inflexions of body length,body height,chest circumference were ranging from 0. 23 to 0. 27 month old. The weight of the 3-month-old lamb was significantly positively correlated with the birth weight( P<0. 01),so as the height of the 3-month-old rams and the height of the newborn body,and the chest circumference of the 3-month-old ewes and the newborn chest circumference( P<0. 05). It indicates that lactation is very important for the growth of lambs,and the newborn body conditions has a significant influence on the weaning body conditions.

引文

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