Effects of Lactobacillus Supplemented in Drinking Water on Intestinal and Immune Organ of Broiler Breeders during the Late Laying Period
WANG SanJun
LIN Chun
LIANG Yongkang
XU Xiayu
XU Bin
ZHANG Chang
MEI Gui
DU Zongliang
LI Ying
Abstract：This study investigated the effects of Lactobacillus supplementation in drinking water on the intestinal and immune organs in broiler breeders during the late laying period.The aim is to provide a theoretical basis for the application of Lactobacillus in poultry husbandry.A total of 360 healthy Silkie fowls(Black-boned chickens),aged 38 weeks with average weight of(2.4±0.1)kg,were randomly assigned to a control group and a treatment group,each with 6 replicates of 30 birds per replicate.The control group was provided withnormal drinking water,while the treatment group wasgiven a Lactobacillus nutrient solution(2 kg/t,with a viable bacterial count of 3×109 CFU/g)in their drinking water.Following a 7-day adaptation period,the experimental trial lasted 65 days.Results demonstrated that,compared to the control group,at day 30,the relative weight and organ index of the jejunum and cecumin the Lactobacillus-supplemented group were significantly increased(P<0.05).At day 65,there was no significant difference in the intestinal organ index 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 that adding Lactobacillus to drinking water can mitigate age-related decline of intestinal organs and enhance immune organ function in late-laying broiler breeders.
Keywords：LactobacillusBroiler BreedersOrgan IndexLate Laying Period
Publication Date：2025-12-18
Online Publishing Date：2025-12-31(First online date of this platform, not the publication date of the document)
Pages：6( 55-60 )