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Transdermal Measurement of Glomerular Filtration Rate in Mechanically Ventilated Piglets

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Published on: September 13, 2022

Alternative methods of pig chilling.

A Gigiel¹, F Butler, B Hudson

¹AFRC Institute of Food Research-Bristol, Langford, Bristol BS18 7DY, UK.

|November 8, 2011

Summary

High humidity chilling systems significantly reduce pork weight loss compared to conventional methods. Texture variations were primarily animal-dependent, not treatment-related, suggesting cost-effective chilling options exist.

Area of Science:

Food Science
Meat Science
Refrigeration Technology

Background:

Optimizing pork chilling is crucial for meat quality and economic viability.
Traditional chilling methods face challenges in minimizing weight loss and maintaining texture.
Exploring alternative refrigeration systems is essential for the pork processing industry.

Purpose of the Study:

To compare the effects of different pork chilling systems on cooling rate, weight loss, texture, bacterial counts, drip, and appearance.
To evaluate the impact of rapid pre-chill, delayed chilling, high humidity (ice bank), and water spray interventions.
To determine the most economically viable and quality-preserving chilling method for pork sides.

Main Methods:

Pork sides (average 75 kg) were subjected to various chilling regimes, including high humidity (ice bank) vs. conventional chilling, with/without rapid pre-chill or delayed chilling, and water spray.

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Cooling rates were monitored to reach 7°C in the deep leg post mortem.

Weight loss, M. longissimus dorsi texture, bacterial numbers, drip, and visual appearance were assessed across treatments.

Main Results:

All treatments achieved the target cooling temperature within 15.7–19 hours post mortem.
Weight loss ranged from 0.95% (delay and spray) to 2.17% (conventional chilling).
M. longissimus dorsi texture was significantly tougher in rapid pre-chill and conventional chilling compared to other methods. Bacterial numbers, drip, and appearance showed no significant differences (P > 0.05) between treatments.
Animal-to-animal variation in texture was greater than treatment-related variation.

Conclusions:

Chilling system selection should prioritize weight loss reduction and cost-effectiveness.
The delay and spray treatment offers substantial annual savings (£37,800 per 3,080 tonnes) compared to conventional chilling.
High humidity chilling systems show promise for reducing weight loss without negatively impacting bacterial load, drip, or appearance.