大白猪母系生长和繁殖性能的阶段性选育研究  

Phased breeding progress of growth and reproductive performance in Yorkshire Matriline

作　　者：李改英[1] 吕刚[2] 李新建[1] 刘金章[1] 任广志[1] 

机构地区：[1]河南农业大学牧医工程学院,郑州450002 [2]河南省黄泛区鑫欣牧业有限公司,河南西华466632

出　　处：《东北农业大学学报》2012年第9期22-25,共4页Journal of Northeast Agricultural University

基　　金：河南省重大科技专项(111100110300-1)

摘　　要：为检验大白猪母系选育效果,分别在选育群一世代、二世代、三世代后代仔猪中选取日龄、体重相近（P〉0.05）的公母猪进行为期80 d左右的性能测定。结果表明,随着世代选育进展,公母猪的结束体重显著增加,达到100 kg体重的日龄显著缩短（P〈0.05）;母猪30~100 kg体重的日增重及公母猪出生-结束日增重均呈增加趋势（P〈0.05）,同时耗料量增加,饲料利用率下降（P〈0.05）;公母猪背膘厚显著增加,公猪眼肌面积显著下降（P〈0.05）,母猪变化不显著（P〉0.05）;产仔性状比较稳定（P〉0.05）,35 d断奶重和35 d断奶个体重明显升高（P〈0.05）。可见生长速度、增重及断奶重这些指标都达到了预期的目标,但增重的同时提高饲料利用率和眼肌面积以及降低背膘厚是兼顾的指标。To test the selective effect of Yorkshire Matriline,the same weight and age piglets（P0.05）from the offspring of piglets in the breeding groups of the first generation,the second generation and the third generation respectively were choosed to process a approximately 80-day performance measurement.Results showed： with selection carrying,the ending weight of boars and sows increased prominently and the age to 100 kg weight shortened markedly（P0.05）;the average daily gain weight of 30~100 kg sows and the birth-ending average daily gain weight of sows and boars presented incresing current（P0.05）,at same time,feed consumption added and feed utilization rate dropped（P0.05）;backfat to boars and sows added markedly,but eye muscle area of boar descended notabily（P0.05）,however there were no prominence for sows（P0.05）;the littering character relatively stabilized（P0.05）,and 35 days ablactation weight as well as individual ablactation weight increased distinctly.it was obvious that growth rate、increasing weight and ablactation weight were all reached expectant aim,but it was a considering target to improve eye muscle area and feed Consumption as well as reduce backfat at the same time.

关 键 词：大白猪 生长发育 繁殖性状 

分 类 号：S828[农业科学—畜牧学]