Duchet-Suchaux M, Mompart F, Berthelot F, Beaumont C, Léchopier P, Pardon P
Pathologie Infectieuse et Immunologie, Centre de Tours, Nouzilly, France.
Avian Dis. 1997 Jul-Sep;41(3):559-67.
Four chicken lines, L2, B13, PA12 (egg-type), and Y11 (meat-type), were tested for experimental carrier state of Salmonella enteritidis (SE) in two identical trials. After oral inoculation of SE at 1 wk of age with 5 x 10(4) SE colony-forming units (CFU), 10 chickens per line were necropsied weekly for 6 wk and then every 8 or 15 days until the 12th week postinoculation (PI). Liver, spleen, ovary, and ceca were examined for level of SE colonization. Numbers of positive livers and spleens and levels of the challenge strain in these organs differed little between the four chicken lines. Only three positive ovaries were detected. According to the chicken line, ceca exhibited generally significant (P < 0.05) differences in the number of positive organs during weeks 5-11 PI, in the SE CFU levels (P < 0.05) in the first 5 wk PI and during weeks 8 and 10 PI, and in the duration of colonization. L2 and B13 chickens generally carried SE in their ceca at higher levels, in more animals, and for a longer time than PA12 and Y11 chickens. Y11 chickens were the most resistant to SE cecal colonization.
在两项相同的试验中，对四个鸡品系L2、B13、PA12（蛋用型）和Y11（肉用型）进行了肠炎沙门氏菌（SE）实验性携带状态的检测。在1周龄时给鸡口服接种5×10⁴个SE菌落形成单位（CFU）的SE，每个品系每周剖检10只鸡，持续6周，然后每隔8天或15天剖检一次，直至接种后第12周（PI）。检查肝脏、脾脏、卵巢和盲肠的SE定植水平。四个鸡品系之间，阳性肝脏和脾脏的数量以及这些器官中攻毒菌株的水平差异不大。仅检测到三个阳性卵巢。根据鸡品系不同，在接种后第5至11周，盲肠在阳性器官数量、接种后前5周以及第8周和第10周的SE CFU水平（P<0.05）以及定植持续时间方面通常存在显著（P<0.05）差异。L2和B13品系的鸡盲肠中SE的携带水平通常更高，携带动物更多，且携带时间比PA12和Y11品系的鸡更长。Y11品系的鸡对SE盲肠定植的抵抗力最强。
