饮水中添加乳酸菌对产蛋后期肉种鸡肠道器官和免疫指数的影响

打开文本图片集

中图分类号：S831.5 文献标识码：A 文章编码：1005-8567（2025）06-0055-06

Effects of Lactobacillus Supplemented in Drinking Water on Intestinal and Immune Organ of Broiler Breeders during the Late Laying Period

WANGSanJun，LINChun，LIANG Yongkang，XUXiayu，XUBin，ZHANGChang， MEI Gui，DU Zongliang，LIYing （1.Agricultural Product Processing Research Institute， Chinese Academy of Tropical Agricultural Sciences，

Zhanjiang Guangdong 524001; 2.Institute ofAnimal Science，GuangdongAcademyofAgricultural Sciences，National KeyLaboratoryofPig and Poultry Breeding，Guangdong Provincial KeyLaboratoryof Livestock Breedingand Nutrition Research， Guangzhou Guangdong 510640; 3.GuangdongLingnan Vocational andTechnicalCollege，Guangzhou Guangdong 511510; 4.Xufeng Animal Husbandry and Veterinary Co. ，Ltd.，Kaiping Guangdong 529300）

Abstract：Thisstudy investigated the effects ofLactobacillus supplementation in drinking wateronthe intestinal and immuneorgans in broilerbreedersduring thelatelaying period.Theaim is toprovideatheoretical basis forthe applicationofLactobacilus inpoultry husbandry.Atotalof36O healthy Silkiefowls （Black-bonedchickens），aged38 weekswithaverageweight of（2.4 ± 0.1） kg ，wererandomly assigned to a control group and a treatment group，each with6 replicates of3O birdsper replicate.Thecontrol group was provided withnormal drinking water，while the treatment group wasgiven a Lactobacillus nutrient solution（ 2kg/t ，withaviable bacterial count of 3 .× 1 ）9 CFU Δg′g ）in theirdrinking water.Followinga7-dayadaptation period，theexperimental triallasted 65days.Resultsdemonstrated that，compared tothecontrol group，atday3O，therelative weightand organ indexof the jejunumand cecuminthe Lactobacillus - supplemented group were significantly increased （ P<0.05 ）.At day 65，there was no significant difference in the intestinal organindex or relative weight between groups（ P>0.05 ），but the thymus organ index was significantly increased（ P<0.05 ），and other immune organ index showed a tendency for improvement. These findings indicate thatadding Lactobacilus todrinking watercanmitigate age-relateddecline of intestinal organs and enhance immune organ functioninlate-laying broiler breeders.

Keywords：Lactobacillus；BroilerBreeders；OrganIndex;LateLayingPeriod

随着禁抗政策的实施以及近年来健康养殖理念的推动，寻找绿色、安全、无残留的替抗物质已成为当今研究的热点之一。（剩余7075字）