Attack of Concrete Floors in Pig Houses by Feed Acids: Influence of Fly Ash Addition and Cement-bound Surface Layers

Posted in: Environment by admin on January 1, 1997 | No Comments

Concrete AYoors in pig houses are subject to attack by lactic and acetic acid, formed in spilled and soured mealA?water mixtures. Accelerated degradation tests, comprising cyclical exposure to acidic liquids and detachment of the unstable concrete by brushing, were used to simulate the attack of concrete AYoors and of cementbound surface layers. It is estimated that the eA

EFFECT OF FREE PHOSPHINE ON ANAEROBIC DIGESTION

Posted in: Environment by admin on | No Comments

Evaluation of Feeders for Grower Finisher Pigs

Posted in: Prairie Swine Centre by admin on | No Comments

Injecting liquid hog manure for improving crop yields

Posted in: Prairie Swine Centre by admin on | No Comments

The application of hog manure resulted in significant increases in soil fertility, soil structure and crop production; and when applied at a rate of 8,000 gallons per acre , these effects lasted into the second year. The inclusion of elemental sulphur resulted in the greatest increase in crop production on a sulphur-deficient soil at Star City. However, at the other sites the sulphur appeared to decrease the effectiveness of the hog manure. Our research indicates that the acidification process of S-mineralization may negatively affect N-mineralization.

Do stabled horses cope?

Posted in: Welfare by admin on | No Comments

Behavioural and anatomical consequences of two beak trimming methods in 1- and 10-d-old domestic chicks.

Posted in: Welfare by admin on | No Comments

Book Review: ‘PORCINE REPRODUCTIVE AND RESPIRATORY SYNDROME (PRRS)’

Posted in: Air Filtration, Pork Insight Articles by admin on August 31, 1996 | No Comments

This is a short review of the book Porcine Reproductive and Respiratory Syndrome (PRRS). When PRRS was first discovered it caused a large amount of concern and even more when it was found in Germany in 1990. Since then a lot has been learned about the virus that is responsible for the disease and it is recognized as a disease to be lived with rather than eliminated. Fortunately the disease was not as severe for most farms as originally feared. This does not take away from the importance of the work being done to understand the disease. The author of the review believes it is an important book for swine veterinarians.

Rearing piglets in a poor environment: developmental aspects of social stress in pigs.

Posted in: Production, Uncategorized by admin on July 14, 1996 | No Comments

Water Delivery Equipment – How it can Impact Overall Water Use and Wastage Within a Facility

Posted in: Energy by admin on January 1, 1996 | No Comments

This article looks at the impact of water delivery equipment on overall water use and wastage. Nipple drinkers, wet/dry feeders and total manure volume are linked with regards to water usage and waste. Drugs added to water should not be altered if water use is reduced compared to expectations due to equipment selection. Pigs consume the same amount of water regardless of delivery device.

Survival of Specific Pathogens in Material and Leachate from Composted Swine Carcasses.

Posted in: Environment by admin on | No Comments

The ability to survive of several pathogens was measured in the compost material and leachate produced by composting swine carcasses. The survival of the bacterium, Serratia Marcescens (similar by its characteristics to Salmonella but non-pathogenic) have been studied throughout composting process. The results obtained showed that under most individual farming conditions the composting of carcasses do not present biosecurity risks. In case of serious health outbreaks other measures may be necessary to protect the herd.
The tests were done as part of the broader experiment on composting ( see: The Effect of Sawdust and Straw on Composting Swine Carcasses by the same authors). As mentioned in the other article, the sawdust seems to more adequate as the temperature is higher, conditions more appropriate for pathogen killing. On the other hand leachate may cause problems as results showed that some of the pathogen could survive for at least 5 days. The control of leachates would than be important in order to prevent contamination.