Effect of lowering dietary crude protein on nitrogen excretion, manure composition and ammonia emission from fattening pigs

Portejoie, S.; Dourmad, Jean-Yves; Martinez, J.; Lebreton, Yves

doi:10.1016/j.livprodsci.2004.06.013

Cited by 133 publications

(173 citation statements)

References 15 publications

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“…These significant reductions were achieved without a negative effect on N retention, resulting in an increase in N absorption in the low-CP diets. Reductions previously reported in total N, urinary N (Canh et al, 1998a;Carpenter et al, 2004) and faecal N (Lee and Kay, 2003;Portejoie et al, 2004;Leek et al, 2005) are in line with those found in the current study. Carpenter et al (2004) reported a proportional reduction of 0.06 in total daily N excretion per 10 g/kg reduction in dietary CP to 150 g/kg.…”

Section: Discussionsupporting

confidence: 93%

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: Discussionsupporting

confidence: 93%

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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“…In a study with growing-fi nishing pigs, CANH et al (1998) obtained a 31% reduction of N content in the manure (7.65 versus 11.13g N100 g -1 dry matter) and a 49% reduction of NH 3 emissions (4.79 versus 9.44g per pig per day) by lowering CP content from 165 to 125g kg -1 . PORTEJOIE et al (2004) obtained 56% reduction of N content in manure and 76% reduction of NH 3 emissions in a study with fi nishing pigs fed low-crude protein diets. Thus, low-crude protein diets have special environmental advantages for pig production.…”

Section: ----------------------------------Crude Protein (G Kg -1 ) Amentioning

confidence: 99%

Net energy for 60- to 120-kg pigs fed low-crude protein diets

et al. 2014

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Two experiments were conducted to determine the effects of dietary net energy content (NE) on performance and carcass traits of fi nishing barrows fed low-crude protein (CP)diets. Pigs (60.0±1.05kg, Exp. 1, 93.0±1.56kg, Exp. 2) RESUMO Dois experimentos foram conduzidos para determinar os efeitos da energia líquida (EL) da ração no desempenho e nas características de carcaça de suínos, recebendo dietas com proteína bruta reduzida (PB

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“…Reducing protein or nitrogen (N) concentration in excreta decreases the availability of substrates that microbes can metabolise to odorous compounds. It is clear from the literature that ammonia from animal production facilities can be decreased considerably by reducing the amount of protein in the diet and at the same time supplementing most essential AA to balance AA pattern and to maintain animal performance (Hobbs et al, 1996;Canh et al, 1998b;Zervas and Zijlstra, 2002;Portejoie et al, 2004). However, in the case of odour strength and offensiveness the situation is not so straightforward.…”

Section: Introductionmentioning

confidence: 99%

Effects of dietary crude protein level on odour from pig manure

Aarnink

Jongbloed

et al. 2007

Animal

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The objective of this study was to determine the effects of dietary crude protein (CP) level on odour emission, odour intensity, hedonic tone, and ammonia emission from pig manure and on manure composition (pH, total nitrogen, ammonium, volatile fatty acids, indolic, phenolic and sulphur-containing compounds). An experiment was conducted with growing pigs (n ¼ 18) in a randomised complete-block design with three treatments in six blocks. Treatment groups were 12%, 15% and 18% CP diets. Barley was exchanged for soya-bean meal. Crystalline amino acids (AA) were included in the 12% CP diet up to the level of pigs' requirement; the same amount of AA was added to the 15% and 18% CP diets. Pigs with an initial body weight (BW) of 36.5^3.4 kg (mean^s.d.) were individually penned in partly slatted floor pens and offered a daily feed allowance of 2.8 £ maintenance requirement for net energy (NE: 293 kJ/kg BW 0.75 ). Feed was mixed with water, 1/2.5 (w/w). Faeces and urine of each pig were accumulated together in a separate manure pit under the slatted floor. After an adaptation period of 2 weeks, the manure pits were cleaned and manure was collected. In the 5th week of the collection period, air samples for odour and ammonia analyses, and manure samples were collected directly from each manure pit. Air samples were analysed for odour concentration and for hedonic value and intensity above odour detection threshold. Manure samples were analysed for volatile fatty acids, and indolic, phenolic and sulphurous compounds, ammonium and total nitrogen concentrations. Reducing dietary CP from 18% to 12% lowered odour emission ( P , 0.05) and ammonia emission ( P ¼ 0.01) from pig manure by 80% and 53%, respectively. Reduced dietary CP decreased total nitrogen, methyl sulphide, carbon disulphide, ethanethiol, phenol, 4-ethyl phenol, indole and 3-methyl indole concentrations in the manure ( P , 0.05). Volatile fatty acids and cresols concentrations in the manure of pigs fed different dietary CP levels were similar. A reduction of dietary CP and at the same time providing essential AA is an option to reduce odour emission as well as ammonia emission from pig manure.

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Effect of lowering dietary crude protein on nitrogen excretion, manure composition and ammonia emission from fattening pigs

Cited by 133 publications

References 15 publications

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

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

Net energy for 60- to 120-kg pigs fed low-crude protein diets

Effects of dietary crude protein level on odour from pig manure

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