Alteration of nutrition as a means to reduce environmental pollution by pigs

Jongbloed, A.W.; Lenis, N.P.

doi:10.1016/0301-6226(92)90057-b

Cited by 100 publications

(67 citation statements)

References 24 publications

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“…As a result, incomplete digestion and consumption of excess amino acids are largely responsible for unnecessary nitrogen (N) excretion and half of ingested N is excreted as urea in urine (Jongbloed and Lenis, 1992). The urea is then rapidly converted into ammonia by the urease enzyme present in faeces, whereas faecal N in the form of bacterial protein degrades gradually (Van der Peet-Schwering et al, 1999).…”

Section: Introductionmentioning

confidence: 99%

The effect of high and low dietary crude protein and inulin supplementation on nutrient digestibility, nitrogen excretion, intestinal microflora and manure ammonia emissions from finisher pigs

Lynch

Sweeney

Callan

et al. 2007

Animal

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A 2 3 2 factorial experiment was performed to investigate the interaction between a high-and low-crude-protein (CP) diet (200 v. 140 g/kg) and inulin supplementation (0 v. 12.5 g/kg) on nutrient digestibility, nitrogen (N) excretion, intestinal microflora, volatile fatty acid (VFA) concentration and manure ammonia emissions from 24 boars (n 5 6, 74.0 kg live weight). The diets were formulated to contain similar concentrations of digestible energy and lysine. Pigs offered the high-CP diets had a higher excretion of urinary N (P , 0.001), faecal N (P , 0.01) and total N (P , 0.001) than the pigs offered the low-CP diets. Inulin supplementation increased faecal N excretion (P , 0.05) and decreased the urine N : faeces N ratio (P , 0.05) compared with the inulin-free diets. There was no effect (P . 0.05) of dietary treatment on N retention. There was an interaction (P , 0.05) between dietary CP concentration and inulin supplementation on caecal Enterobacteria spp. Pigs offered the diet containing 200 g/kg of CP plus inulin decreased the population of Enterobacteria spp. compared to those with the inulinsupplemented 140 g/kg CP diet. However, CP level had no significant effect on the population of Enterobacteria spp. in the unsupplemented diets. Inulin supplementation increased caecal Bifidobacteria (P , 0.01) compared with the inulin-free diets. There was no effect of inulin supplementation on VFA concentration or intestinal pH (P . 0.05). Pigs offered the 200 g/kg CP diets had higher (P , 0.05) manure ammonia emissions from 0 to 240 h of storage than pigs offered the 140 g/kg CP. In conclusion, inulin supplementation resulted in an increase in Bifidobacteria concentration and a reduction in Enterobacteria spp. at the high CP level indicating that inulin has the ability to beneficially manipulate gut microflora in a proteolytic environment.

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Section: Introductionmentioning

confidence: 99%

The effect of high and low dietary crude protein and inulin supplementation on nutrient digestibility, nitrogen excretion, intestinal microflora and manure ammonia emissions from finisher pigs

Lynch

Sweeney

Callan

et al. 2007

Animal

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“…Ammonia loss from the animal building is stimulated by the area of flooring covered by excreta, the chemical composition of the excreta, the temperature in the house and the ventilation rate of the house (Hutchings and Sommer, 2001). Of the total nitrogen ingested into the finishing animal approximately 50% is returned in the urine and 20% in the faeces (Jongbloed and Lenis, 1992). Ammonia is the product of the degradation of nitrogenous compounds.…”

Section: Introductionmentioning

confidence: 99%

The influence of diet crude protein level on odour and ammonia emissions from finishing pig houses

Hayes

Leek

Curran

et al. 2004

Bioresource Technology

113

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Publication information Bioresource Technology, 91 (3): 309-315Publisher Elsevier Item record/more information http://hdl.handle.net/10197/4333 Publisher's statementThis is the author's version of a work that was accepted for publication in Bioresource Technology. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in Bioresource Technology ( and 8.27 g day -1 animal -1 respectively (P 0.001). There was no significant difference in the average daily intake and the average daily gain for the four diets (P>0.05).Manipulation of dietary crude protein levels would appear to offer a low cost alternative, in relation to end of pipe treatments, for the abatement of odour and ammonia emissions from finishing pig houses.

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“…Dourmad et al (1996) 1996). Jongbloed and Lenis (1992) suggested that nitrogen and phosphorus excretion could be reduced by 2-10% under phase feeding.…”

Section: The Need Of Application Of Phase Feedingmentioning

confidence: 99%

“…Recently, it has been recognized that phase feeding could be used to reduce nitrogen and phosphorous excretion by feeding pigs in better agreement with age and physiological state (Jongbloed and Lenis, 1992;Paik et al, 1996;Mosenthin, 1996;Honeyman, 1996). Phase feeding is a term used to describe the feeding of several diets for a relatively short period of time in order to closely meet the pigs nutrient requirements.…”

Section: Introductionmentioning

confidence: 99%