Potential for Evaporative Cooling during Heat Stress Periods in Pig Production in Portugal (Alentejo)

Posted in: Welfare by admin on January 1, 2000 | No Comments

Do windbreaks minimize stress on cattle grazing foothill winter range?

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Grazing native rangeland can help lower costs of wintering livestock in northern climates. However, extreme cold and wind negatively affect an animal’s thermal balance, increasing energy demand when nutritive value of the forage is low. In a 2 year study, the authors determined whether exposure to winter wind elicits a stress response in pregnant cows (5 – 7 year old) grazing a foothill rangeland. They measured several indicators of stress-response of cows which had (windbreak) or did not have (non-windbreak) access to windbreaks. In winter 1, backfat thickness increased on windbreak and non-windbreak cattle. Body condition scores of both groups were lower at the end of the trial. In winter 2, backfat thickness decreased for windbreak and non-windbreak cattle. Body condition score did not change. Changes in backfat thickness indicate that cattle in winter 1 were catabolizing more lean muscle tissue, whereas cattle in winter 2 were catabolizing more fat. Cattle in access to windbreaks tended to have a stronger cell-mediated immune response than non-windbreak cattle. Birth and weaning weights of calves, and calving interval were similar for windbreak and non-windbreak cattle. Windbreaks were of minimal benefit to cattle grazing our foothill range site. Differences between windbreak and non-windbreak cattle were subtle, primarily reflected in slight differences in immune response and in backfat thickness.

The effect of early age feed restriction on subsequent response to high environmental temperatures in female broiler chickens

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Chicks were assigned to one of four feeding regimens; 1) ad libitum feeding, 2) 40 % feed restriction at 4, 5, and 6 days of age, 3) 60 % feed restriction at 4, 5, and 6 days of age, and 4) 80 % feed restriction at 4, 5, and 6 days of age. From 35 to 41 days of age, the birds were all exposed to 38 A

Detection of Trichinella infection in food animals.

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Consolidation in Meatpacking: Causes & Concerns

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The U.S. meatpacking industry consolidated rapidly in the last two decades, as todaya

SURFACE SEAL HYDRAULIC CONDUCTIVITY AS AFFECTED BY LIVESTOCK MANURE APPLICATION

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QUALITY CONTROL OF STANDARDIZED REFERENCE SPRAY NOZZLES

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RUNOFF AND SOIL LOSS AS AFFECTED BY THE APPLICATION OF MANURE

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Comparison Between Low-End Discrete and High-End Continuous Measurements of Air Quality in Swine Buildings

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AEROBIC THERMOPHILIC AND ANAEROBIC MESOPHILIC TREATMENT OF SWINE WASTE

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