Raising on Water Stocking Density Reduces Geese ReproductivePerformances via Water Bacteria and Lipopolysaccharide Contaminationsin “Geese-Fish” Production System

doi:10.1016/S1671-2927(11)60139-9

Journal of Integrative Agriculture ›› 2011, Vol. 10 ›› Issue (9): 1459-1466.DOI: 10.1016/S1671-2927(11)60139-9

Raising on Water Stocking Density Reduces Geese ReproductivePerformances via Water Bacteria and Lipopolysaccharide Contaminationsin “Geese-Fish” Production System

JIANGDan-li , LIULi , WANG Cong-li, CHEN Fang, SUN Ai-dong , SHI Zhen-dan

1. College of Animal Science, South China Agricultural University
2. College of Informatics, South China Agricultural University

收稿日期:2010-08-19 出版日期:2011-09-01 发布日期:2011-09-09
通讯作者: Correspondence SHI Zhen-dan, Professor, Tel: +86-20-8528-5479, Fax: +86-20-8528-0740, E-mail: zdshi@scau.edu.cn
作者简介:JIANG Dan-li, MSc, E-mail: danli0222@163.com
基金资助:
This work was supported by the National Natural ScienceFoundation of China (30871795) and the EarmarkedFund for Modern Agro-Industry Technology ResearchSystem, China (nycytx-45-13).

Raising on Water Stocking Density Reduces Geese ReproductivePerformances via Water Bacteria and Lipopolysaccharide Contaminationsin “Geese-Fish” Production System

JIANGDan-li , LIULi , WANG Cong-li, CHEN Fang, SUN Ai-dong , SHI Zhen-dan

1. College of Animal Science, South China Agricultural University
2. College of Informatics, South China Agricultural University

Received:2010-08-19 Online:2011-09-01 Published:2011-09-09
Contact: Correspondence SHI Zhen-dan, Professor, Tel: +86-20-8528-5479, Fax: +86-20-8528-0740, E-mail: zdshi@scau.edu.cn
About author:JIANG Dan-li, MSc, E-mail: danli0222@163.com
Supported by:
This work was supported by the National Natural ScienceFoundation of China (30871795) and the EarmarkedFund for Modern Agro-Industry Technology ResearchSystem, China (nycytx-45-13).

摘要/Abstract

摘要： This study was carried out to unravel the mechanism of reductions in production performances in high stocking densitygeese flocks during summer months in “geese-fish” production system. Experiment 1 observed the water bacterialgrowth, lipopolysaccharde concentrations in water and geese blood, and geese reproductive performances from summerto winter, in two flocks with varying on water stocking densities. Results showed that counts of total bacteria, Escherichiacoli and Salmonella in water, as well as water and geese plasma LPS concentrations, exhibited a tendency decreasing fromthe highest levels in summer, to intermediate levels in autumn, and to the lowest values in winter. Such seasonaldecreases in bacteria and LPS concentrations were associated with similar seasonal decreases in embryo mortality duringincubation. In addition, embryos dead or showing development retardation by day 25 of incubation contained copiousLPS in allantoic fluid, in contrast to the negligible amount in normal developing embryos. Raising on water stockingdensity elevated bacteria counts, LPS concentrations in water and geese plasma, and decreased egg fertility but increasedembryo mortality during incubation. In experiment 2, exogenous LPS treatment to the geese depressed egg laying,reduced egg hatchability, caused sickness behavior in the goslings hatched. In experiment 3, exogenous LPS directlyadministered to day 8 and 18 embryos during incubation dose dependently increased mortality and decreased hatchability,and caused sickness behavior in the goslings hatched. It is concluded that the raising on water geese stocking densitystimulates pathogenic bacteria growth in water, which via LPS contamination impaires embryo development in incubationand therefore reduces geese reproductive performance and gosling quality during the hot summer months.

关键词: water bacteria growth, lipopolysaccharide, production performances, geese

Abstract: This study was carried out to unravel the mechanism of reductions in production performances in high stocking densitygeese flocks during summer months in “geese-fish” production system. Experiment 1 observed the water bacterialgrowth, lipopolysaccharde concentrations in water and geese blood, and geese reproductive performances from summerto winter, in two flocks with varying on water stocking densities. Results showed that counts of total bacteria, Escherichiacoli and Salmonella in water, as well as water and geese plasma LPS concentrations, exhibited a tendency decreasing fromthe highest levels in summer, to intermediate levels in autumn, and to the lowest values in winter. Such seasonaldecreases in bacteria and LPS concentrations were associated with similar seasonal decreases in embryo mortality duringincubation. In addition, embryos dead or showing development retardation by day 25 of incubation contained copiousLPS in allantoic fluid, in contrast to the negligible amount in normal developing embryos. Raising on water stockingdensity elevated bacteria counts, LPS concentrations in water and geese plasma, and decreased egg fertility but increasedembryo mortality during incubation. In experiment 2, exogenous LPS treatment to the geese depressed egg laying,reduced egg hatchability, caused sickness behavior in the goslings hatched. In experiment 3, exogenous LPS directlyadministered to day 8 and 18 embryos during incubation dose dependently increased mortality and decreased hatchability,and caused sickness behavior in the goslings hatched. It is concluded that the raising on water geese stocking densitystimulates pathogenic bacteria growth in water, which via LPS contamination impaires embryo development in incubationand therefore reduces geese reproductive performance and gosling quality during the hot summer months.

Key words: water bacteria growth, lipopolysaccharide, production performances, geese

JIANGDan-li, LIULi, WANG Cong-li, CHEN Fang, SUN Ai-dong , SHI Zhen-dan. Raising on Water Stocking Density Reduces Geese ReproductivePerformances via Water Bacteria and Lipopolysaccharide Contaminationsin “Geese-Fish” Production System[J]. Journal of Integrative Agriculture, 2011, 10(9): 1459-1466.

JIANGDan-li , LIULi , WANG Cong-li, CHEN Fang, SUN Ai-dong , SHI Zhen-dan. Raising on Water Stocking Density Reduces Geese ReproductivePerformances via Water Bacteria and Lipopolysaccharide Contaminationsin “Geese-Fish” Production System[J]. Journal of Integrative Agriculture, 2011, 10(9): 1459-1466.

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Raising on Water Stocking Density Reduces Geese ReproductivePerformances via Water Bacteria and Lipopolysaccharide Contaminationsin “Geese-Fish” Production System

Raising on Water Stocking Density Reduces Geese ReproductivePerformances via Water Bacteria and Lipopolysaccharide Contaminationsin “Geese-Fish” Production System

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