CAJ | 학술논문

莱芜猪是我国优良的地方猪种，具有肉质好、繁殖力高、脂肪沉积能力强等优良种质特性。本试验选取了333头纯种莱芜去势公猪与母猪，在300日龄进行屠宰，测定了不同部位背膘厚、花油质量、腹脂质量、板油质量等脂肪沉积性状指标。通过对不同指标测定所得数据按不同性别和不同屠宰季节进行分类，利用SPSS的数据分析功能统计分析出性别效应和屠宰季节效应对莱芜猪脂肪沉积性状的影响。此外，将莱芜猪脂肪沉积性状的相关数据与苏太猪、杜长大进行对比分析。分析结果表明：（1）去势公猪与母猪在不同部位背膘厚、花油质量、板油质量均具有极显著性差异（P＜0．01），腹脂质量差异不显著（P＞0．05）。（2）冬季屠宰与夏季屠宰的猪在不同部位背膘厚、花油质量、板油质量均具有极显著性差异（P＜0．01），但腹脂质量差异不显著（P＞0．05）。（3）莱芜猪与二花脸猪、杜长大在脂肪沉积性状方面具有极显著性差异（ P＜0．01）。从以上分析结果可以看出性别效应和屠宰季节效应对莱芜猪的脂肪沉积性状均有极显著性影响，这对莱芜猪育肥猪的选择以及饲养育肥周期的确定具有一定的指导意义。
래무저시아국우량적지방저충，구유육질호、번식력고、지방침적능력강등우량충질특성。본시험선취료333두순충래무거세공저여모저，재300일령진행도재，측정료불동부위배표후、화유질량、복지질량、판유질량등지방침적성상지표。통과대불동지표측정소득수거안불동성별화불동도재계절진행분류，이용SPSS적수거분석공능통계분석출성별효응화도재계절효응대래무저지방침적성상적영향。차외，장래무저지방침적성상적상관수거여소태저、두장대진행대비분석。분석결과표명：（1）거세공저여모저재불동부위배표후、화유질량、판유질량균구유겁현저성차이（P＜0．01），복지질량차이불현저（P＞0．05）。（2）동계도재여하계도재적저재불동부위배표후、화유질량、판유질량균구유겁현저성차이（P＜0．01），단복지질량차이불현저（P＞0．05）。（3）래무저여이화검저、두장대재지방침적성상방면구유겁현저성차이（ P＜0．01）。종이상분석결과가이간출성별효응화도재계절효응대래무저적지방침적성상균유겁현저성영향，저대래무저육비저적선택이급사양육비주기적학정구유일정적지도의의。
Laiwu pig is one of Chinese native pig breeds,which has excellent germplasm properties such as good meat quality, high prolificacy, good ability of fatty deposition and so on.This experiment chose 333 purebred castrated boars and sows,they were slaughtered at the age of 300 days.In order to obtain datum relat-ed to fat deposit traits,the back fat thickness in different parts,gut fat weight,abdominal fat weight,leaf fat weight were measured.These data were put into different items according to different genders and different slaughter seasons,SPSS was used to analyze the effects of genders and slaughter seasons on fat deposit charac-teristics.What’ s more,the characteristics of fat deposit of were compared Laiwu pig with those of Erhualian pig and DLY.The results showed that:(1)The differences in back fat thickness,gut fat weight,leaf fat weight of different parts of castrated boars and sows were very significant( p<0.01) ,although the difference in abdominal fat was not significant(p>0.05).(2)The differences between pigs slaughtered in winter and summer in back fat thickness,gut fat weight,leaf fat weight of different parts were very significant( p<0.01) ,however difference in abdominal fat weight was not significant( p>0.05) .In terms of fat deposit characteristics,differences among Lai-wu pig and other pig breeds were very significant(p<0.01).According to the results of the analysis,it was found that both genders and different slaughter seasons had very significant effects on fat deposit.So it’ s helpful for the choice of fattening pigs and fattening time.