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Development of a new antimicrobial concept for boar semen preservation based on bacteriocins.

Abstract：

:The conventional storage temperature of 16-18 °C provides optimal conditions for the preservation of boar sperm quality, which are extremely cold sensitive cells. On the other hand, however, it requires the addition of antibiotics to inhibit bacterial growth. Rising numbers of antibiotic resistant bacteria call for alternatives to this conventional storing method. As potential alternative, three different bacteriocin candidates with known bacteriolytic activity against E. coli were examined on possible negative effects concerning the sperm quality and on their impact on bacterial growth of E. coli ILSH 02692 in BTS-extended semen w/o antibiotics. Although the lower concentrations (0.01 and 0.25%) of all bacteriocins did not show any impact on the quality of the semen, the higher concentrations (0.5 and 1.0%) of two bacteriocins led to a significant (P < 0.05) reduction in several sperm quality characteristics. The bacteriocin 860/1c after AMS/dialysis did not affect the sperm quality in any of the tested concentrations and in all tested extenders (BTS, MIII, Androstar Premium and Androhep all w/o antibiotics) at 16 °C as well as at 6 °C. This bacteriocin reduced growth of E. coli ILSH 02692 in BTS-extended semen by 50% compared to the control w/o bacteriocin. Furthermore, a preliminary insemination trial indicated no impact of the selected bacteriocin on fertility. These promising results show that the application of bacteriocins in liquid-preserved semen is a feasible possibility in the future.

journal_name

Theriogenology

journal_title

Theriogenology

authors

Jakop U,Hensel B,Orquera S,Rößner A,Alter T,Schröter F,Grossfeld R,Jung M,Simmet C,Schulze M

doi

10.1016/j.theriogenology.2021.08.004

keywords:

["Antimicrobial resistance","Bacteriocins","Boar","Boar semen preservation","Boar sperm"]

subject

Has Abstract

pub_date

2021-10-01 00:00:00

pages

163-172

eissn

0093-691X

issn

1879-3231

pii

S0093-691X(21)00257-0

journal_volume

173

pub_type

杂志文章

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