CAJ | 학술논문

对301头瘦肉型新品系苏钟Ⅰ系和Ⅱ系仔猪进行氟烷测验,阳性率为1.33%.随机抽取氟烷阴性猪34头进行基因型检测,有6头为杂合子,由此得知NN、Nn和nn3种基因型的频率分别为81.26%、17.41%和1.33%,N和n 2种基因的频率分别为89.97%和10.03%.对3种基因型猪的肉质进行评定结果显示,4头氟烷阳性猪(nn)肉质最差,出现3头严重PSE肉和1头轻度PSE肉,而氟烷阴性猪(NN或Nn)未发生PSE肉.20头苏钟Ⅱ系氟烷阴性猪用阳性公猪测交,对产出的208头后代进行氟烷测验,共检出4窝中的21头阳性猪.对测交后代进行肥育性能和肉质测定,发现阳性猪的日增重和饲料报酬等较低,屠宰率、眼肌面积和瘦肉率较高,肉质较差.
대301두수육형신품계소종Ⅰ계화Ⅱ계자저진행불완측험,양성솔위1.33%.수궤추취불완음성저34두진행기인형검측,유6두위잡합자,유차득지NN、Nn화nn3충기인형적빈솔분별위81.26%、17.41%화1.33%,N화n 2충기인적빈솔분별위89.97%화10.03%.대3충기인형저적육질진행평정결과현시,4두불완양성저(nn)육질최차,출현3두엄중PSE육화1두경도PSE육,이불완음성저(NN혹Nn)미발생PSE육.20두소종Ⅱ계불완음성저용양성공저측교,대산출적208두후대진행불완측험,공검출4와중적21두양성저.대측교후대진행비육성능화육질측정,발현양성저적일증중화사료보수등교저,도재솔、안기면적화수육솔교고,육질교차.
Three hundred and one piglets of Suzh ong line 1 and 2 were chosen for halothane test(HT), with the halothane positive rate of 1.33%. 34 halothane negative(HN) piglets were randomly selected for gen otype testing and 6 of them were found to be heterozygous. The results showed th at genotype frequencies of HalNN, HalNnand Halnn w ere 81.26 %, 17.4% and 1.33%, respectively, while the frequencies of N gene and n gene wer e 89.97% and 10.03%, separately. 4 pigs with genotype Halnn gave worst meat quality appearing 3 typical and 1 slight PSE meat. Pigs with genotype Hal N Nor HalNndid not show PSE meat. 208 offspring from 20 HN sows mat ed wit h halothane positive(HP) boars, 21 piglets from 4 litters were HP, with low dail y gain, low feed efficiency and bad meat quality but high dressing percentage, l arge loin-eye area and high lean meat percentage.