Abstracts - Management

This study used oxytetracycline (OTC) as a model antibiotic to study antibiotic degradation behavior in manure under the above two OTC addition methods.

It can be concluded that immunocastration could be interesting in pigs intended for dry-cured ham elaboration because in males improved the feed conversion ratio with no penalization of carcass or meat quality.

The current study demonstrated that the farrowing system design can influence sow behaviour, with pens allowing for more interactions between sows and their piglets.

Growing mixing level increased aggression, lesion and weight loss after mixing.

Deep-litter system composed of 60% sawdust and 40% rice husk was the most suitable with regard to reduction of environmental pollution.

The administration of an additional injection of 200 mg of gleptoferron at 2-weeks of age increased piglet Hb.

This study indicates that cross fostering was associated with lower risk for preweaning mortality.

Piglet pre-weaning mortality (PWM) is one of the major reproductive components that affects herd productivity in the swine industry.

The results show that nurse sows and their piglets to some extent experience more welfare problems than non-nurse sows with piglets at a similar age.

Current results confirmed that teats used in first lactation produce more milk in second lactation, and that piglets are able to detect this difference.

Heat stress and reduced feed intake compromised intestinal integrity in pigs, and zinc AA complex source mitigates some of these negative effects.

Birth weight had no influence on small intestinal development and function. However, the results confirm that the development and function of the small intestine alters with age.

This study aimed at assessing possible associations between the biosecurity level, antimicrobial usage and farm and production characteristics in order to advice on best practices for a low antimicrobial usage and maximum animal health and production.

The objective of the study was to determine the associations between hematological parameters at weaning and post-weaning weight gain in piglets.

Although correlations with tail and ear damage were low, it was concluded that tear staining has promising potential as a new, additional welfare indicator for commercial pig farming.

These findings promote an improved biosecurity status at pig farms and are of relevance in the discussion on alternative ways to keep animals healthy with a reduced necessity of antimicrobials.

Given these results, a future online method to classify carcasses according to boar taint is strongly recommended.

This study showed the potential to select on longer interval from last insemination to culling in days and thereby select against sows to be culled within the reproduction, locomotion, accident, general disorder and peri-partum cull class and to be culled at the end of a parity.

This system may be useful for monitoring sentinel herds in real time, considerably reducing the financial and logistical costs of periodic sampling and increasing the chances of early detection of infection.

Under study conditions, a high-pressure wash with cold water plus application of an accelerated hydrogen peroxide or a combined glutaraldehyde and quaternary ammonium disinfectant is effective at inactivating PRRSV.

Heat stress during the first half of gestation altered metabolic and body composition parameters during future development and in biological responses to a subsequent heat stress challenge.

Monitoring the evolution of the main biomarkers of autophagy and muscle antioxidant defense in the muscle tissue within the first 24 h postmortem may help the detection of animal stress and its potential effect on the postmortem muscle metabolism.

Improving farmers’ clinical diagnosis ability does not appear sufficient to effectively reduce this risk.

The present study emphasizes the need for both training of the laboratory staff in monitoring HCCP in routine semen production and audits in such AI centers for the external control of hygiene parameters.