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Prairie Swine Centre is an affiliate of the University of Saskatchewan
Prairie Swine Centre is grateful for the assistance of the George Morris Centre in developing the economics portion of Pork Insight.
Financial support for the Enterprise Model Project and Pork Insight has been provided by:
NITROGEN TRANSFORMATIONS DURING ANAEROBICALLY STORED 15N-LABELLED PIG SLURRY
Posted in: Environment by admin on January 1, 1998 | No Comments
Dead Animal Management (Environmental Issues Resource Centre) French Version
Posted in: Prairie Swine Centre by admin on | No Comments
One of 12 chapters contained within the Environmental Issues Resource Centre. It examines various methods in which producers can effectively manage mortaliites associated with pig producltion units. The chapter also explores the future, in assessing what else needs to be done. This chapter is available in both French and English versions.
Odours and Swine Facilities – French Version
Posted in: Prairie Swine Centre by admin on | No Comments
Nutritional value of field peas ll
Posted in: Prairie Swine Centre by admin on | No Comments
Field peas are used increasingly as a source for protein and energy in swine rations in Western Canada. The variability of the DE content of field peas has been described in the 1997 Annual Report. The objective of the present study is tot determine the effects of increased knowledge of nutritional value on animal performance. The DE content in 11 field pea samples ranged from 3098 to 3739 kcal/kg. The specific objective of this study was to reach equal performance among growing pigs fed the described field pea samples. Thus, 30% field pea diets were formulated with equal DE protein, and total l amino acid content (3300 kcal DE, 16.3% CP, and 0.92% total lysine). Minimal differences were observed in average daily feed intake and subsequent pig performance among the 11 field pea diet, indicating that re-formulation of diets using known values for DE content resulted in fairly equal pig performance. More detailed knowledge of ingredient composition is needed to obtain uniform pig performance.
Vocal quality is correlated with levels of stress hormones in domestic pigs.
Posted in: Welfare by admin on | No Comments
Effects of stocking density on lambs being transported by road.
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Manure Handling Strategies for Minimizing Environmental Impacts.
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The environmental impact of manure production are presented with the odour and ammonia emissions. Social aspects are discussed as to what are the elements triggering individuals and communities reaction to the environmental impact of agricultural production. A portrait of the possible risks (water contamination, nutrient build up in soil, odour and ammonia emissions to the air) associated with manure storage ((clay-lined or clayey soils made earthen storage) and handling is also presented and reassurance is made indicating that the recommended practices for manure storage and recommended application rates if followed lower those risks. Appropriate manure spreading techniques that favor injection or rapid incorporation of manure over broadcast spreading will also lower the odour emissions and retain more nitrogen which increase the fertilizing value of the manure.
This articles provides general information about the impacts of manure management at a social level as well as at an environmental level. Following good practices that have been established and improving general management are the keys to lower impacts from manure management.
Digestible energy contents and apparent ileal amino acid digestibilities in regular or partial mechanically dehulled canola meal samples fed to growing pigs.
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A study was carried out to determine the influence of partial mechanical tail-end dehulling on apparent ileal amino acid (AA) digestibilities and digestible energy content in canola meal (CM) samples for growing pigs. Twenty Landrace x Yorkshire barrows, with an initial body weight of 35 kg, were fitted with a simple T-cannula at the distal ileum. Digestibilities were determined in 12 experimental diets with observations from five pigs per diet. Five batches of regular CM were obtained from five different crushing plants in Western Canada. A fraction of these batches was partially dehulled. The regular and partially dehulled CM samples were included at 20% in a barley-based diet. One pooled high-fiber CM sample and a straight barley diet were evaluated as well. Partial dehulling increased (P < 0.05) the digestible energy (DE) content from 12.2 to 13.3 MJ kg DM-1, respectively, and the level of crude protein (CP) from 40.6 to 43.8% in regular and partially dehulled CM samples, respectively. The digestibility of threonine was increased (P < 0.05) by partial dehulling, from 72.1 to 75.5%, the digestibilities of CP, lysine methionine and cysteine were not affected (P > 0.05). Only the digestibilities of methionine and threonine were lower (P < 0.05) in the high-fiber CM sample than in the regular and partially dehulled samples. Digestible energy content, which ranged from 10.8 to 14.2 MJ kg DM-1, differed (P < 0.05) between crushing plants for both regular and partially dehulled CM samples. The digestibility of lysine did not differ (P > 0.05) between processing plants for the regular CM samples. The digestibility of lysine did not differ (P > 0.05) between processing plants for the regular CM samples.
In contrast, there were differences (P < 0.05) in lysine digestibility, ranging from 74.8 to 83.8%, and methionine, ranging from 80.4 to 86.9%, between crushing plants for partially dehulled samples. There were low negative relationships between apparent ileal AA digestibilities and NDF, ADF and CF levels (r < 0.39) and between DE content and NDF, ADF and CF levels (r < 0.36) in the CM samples. In conclusion, the reduction in fiber content by mechanical tail-end dehulling increased the supply of DE and the level of CP, but did not influence apparent ileal CP or AA digestibilities, except for threonine which was slightly increased.