Effects of high fibre and low protein diets on performance, digestibility, nitrogen excretion and ammonia emission in the heavy pig

Galassi, G.; Colombini, S.; Malagutti, L.; Crovetto, Gianni Matteo; Rapetti, L.

doi:10.1016/j.anifeedsci.2010.08.009

Cited by 71 publications

(81 citation statements)

References 35 publications

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“…The carcass proportion was similar among diets, and the average values (82.1% to 83.4%) were close to those found by Galassi et al (2010) in heavy pigs fed diets with a NDF content ranging from 17.5% to 19.0% DM. The average back fat was similar to that observed in other studies with Italian heavy pigs (Renaville et al, 2010), and the diet with the greatest WECS tended to lead to a higher back fat compared with the other 2 diets (30.5 vs. 28.1 and 28.0 mm, P < 0.05).…”

Section: Growth and Slaughter Performancessupporting

confidence: 55%

“…The growth performance of pigs (Table 5) was not affected by treatment except between wk 7 and 10 when pigs fed the diets containing WECS grew slower and had a lower G:F than those fed the CON diet (P < 0.05). Overall growth rate in the whole trial (from 737 to 774 g/d) was greater than that reported by Galassi et al (2010) for pigs of the same weight and has to be considered very satisfactory considering the intense fat deposition of the final phase of growth. Fecal samples collected in each pen from animals at 110, 130, and 150 kg BW (with a barn indoor temperature of 16.9°C, 24.6°C, and 23.4°C, respectively) were used to monitor the DM contents and pH of feces.…”

Section: Growth and Slaughter Performancesmentioning

confidence: 87%

“…The reduction of fecal pH of the heaviest weight of pigs could be due to more intensive fermentation activity in the gut as pigs grow. Indeed, previous studies with heavy pigs (Le Noblet and Le Goff, 2001;Le Goff et al, 2003;Galassi et al, 2004Galassi et al, , 2005Galassi et al, , 2007Galassi et al, , 2010) demonstrated better fiber utilization in the final part of the growth of finishing pigs.…”

Section: Growth and Slaughter Performancesmentioning

confidence: 99%

See 2 more Smart Citations

Digestibility and metabolic utilization of diets containing whole-ear corn silage and their effects on growth and slaughter traits of heavy pigs1

Zanfi

Colombini

Mason

et al. 2014

Journal of Animal Science

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Section: Growth and Slaughter Performancessupporting

confidence: 55%

Section: Growth and Slaughter Performancesmentioning

confidence: 87%

Section: Growth and Slaughter Performancesmentioning

confidence: 99%

See 1 more Smart Citation

Digestibility and metabolic utilization of diets containing whole-ear corn silage and their effects on growth and slaughter traits of heavy pigs1

Zanfi

Colombini

Mason

et al. 2014

Journal of Animal Science

Self Cite

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“…In contrast with the current results, Canh et al (1997) reported a reduction of pH of slurry in response to the dietary addition of digestible fibre in form of sugar beet pulp, and related it to a higher microbial fermentation in the hindgut. However, a lesser or none effect of dietary NDF on pH was observed in other studies when also supplementing diets with soluble fibre (Halas et al, 2010;Von Heimendahl et al, 2010), or with a mixture of soluble and insoluble fibre (Galassi et al, 2010).…”

Section: Effects Of Dietary N Concentrationmentioning

confidence: 80%

“…The reduction of protein content of feeds affects directly nitrogen excretion and reduces NH 3 emissions (Canh et al, 1998;Hayes et al, 2004). The inclusion of fermentable fibre in feeds have been reported to cause a shift in excreta from urinary to faecal nitrogen (Galassi et al, 2010;Halas et al, 2010) and reduce the pH of excreta (Kerr et al, 2006), thus reducing the emission of NH 3 . On the contrary, increasing fermentable fibre content of pig feeds also enhances the emission of CH 4 from enteric origin (Jør-gensen, 2007) and the CH 4 emission potential from slurry (Jarret et al, 2012).…”

Section: Description Of Farm Selection and Sample Collectionmentioning

confidence: 99%

Relationships among slurry characteristics and gaseous emissions at different types of commercial Spanish pig farms

Becaccia

Ferrer

Ibáñez

et al. 2015

Span. j. agric. res.

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This study aimed to analyse several factors of variation of slurry composition and to establish prediction equations for potential methane (CH 4 ) and ammonia (NH 3 ) emissions. Seventy-nine feed and slurry samples were collected at two seasons (summer and winter) from commercial pig farms sited at two Spanish regions (Centre and Mediterranean). Nursery, growing-fattening, gestating and lactating facilities were sampled. Feed and slurry composition were determined, and potential CH 4 and NH 3 emissions measured at laboratory. Feed nutrient contents were used as covariates in the analysis. Near infrared reflectance spectroscopy (NIRS) was evaluated as a predicting tool for slurry composition and potential gaseous emissions. A wide variability was found both in feed and slurry composition. Mediterranean farms had a higher pH (p<0.001) and ash (p=0.02) concentration than those located at the Centre of Spain. Also, type of farm affected ether extract content of the slurry (p=0.02), with highest values obtained for the youngest animal facilities. Results suggested a buffer effect of dietary fibre on slurry pH and a direct relationship (p<0.05) with fibre constituents of manure. Dietary protein content did not affect slurry nitrogen content but decreased (p=0.003) total and volatile solids concentration. Prediction models of potential NH 3 emissions (R 2 =0.89) and CH 4 yield (R 2 =0.61) were obtained from slurry composition. Predictions from NIRS showed a high accuracy for most slurry constituents (R 2 >0.90) and similar accuracy of prediction of potential NH 3 and CH 4 emissions (R 2 =0.84 and 0.68, respectively) to models using slurry characteristics, which can be of interest to estimate emissions from commercial farms and establish mitigation strategies or optimize biogas production. Additional key words: ammonia; methane; NIRS; animal nutrition; prediction model.

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Effects of low protein diet with a balanced amino acid pattern on growth performance, meat quality and cecal microflora of finishing pigs

et al. 2022

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BACKGROUND The present study aimed to investigate the effects of low protein diets balanced with four amino acids on growth performance, meat quality and cecal microflora of finishing pigs. Fifty‐four healthy hybrid barrows (Duroc × Landrace × Yorkshire) with an average body weight of 70.12 ± 4.03 kg were randomly assigned to one of the three dietary treatments with six replicate pens per treatment (three barrows per pen). The three dietary treatments included a normal protein diet (NP), a low protein diet (LP) and a very low protein diet (VLP). RESULTS The average daily gain, average daily feed intake and feed conversion ratio of pigs were not significantly changed with the LP and VLP diets compared to the NP diet (P > 0.05). The water holding capacity and shear force of longissimus dorsi muscle were decreased, whereas the intramuscular fat content of the longissimus dorsi muscle was increased (P < 0.05) in pigs fed with the LP and VLP diets compared to the NP diet. The contents of saturated fatty acids in muscle were decreased (P < 0.05), whereas the content of polyunsaturated fatty acids in muscle was increased (P < 0.01) with the VLP diet compared to the NP diet. The contents of histamine, spermidine, spermine and tyramine of muscle were decreased with the VLP diet compared to the NP diet (P < 0.05). The relative abundance of Turicibacter, Terrisporobacter, Clostridium_sensu_stricto_1 and UCG‐005 was higher (P < 0.05), whereas the relative abundance of Lactobacillus and Streptococcus was lower (P < 0.05) in pigs fed with the LP and VLP diets compared to the NP diet. Based on the correlation of cecal microbiota and cecal biogenic amine, the contents of tyramine, spermidine and histamine were negatively correlated with the abundance of Terrisporobacter (P < 0.01) and the content of histamine was positively correlated with the abundance of Lactobacillus (P < 0.01). CONCLUSION Balanced with four essential amino acids, the VLP diet with crude protein levels decreased by > 4% increased the intramuscular fat content, changed the fatty acid and amino acid composition of longissimus dorsi muscle and the profile of cecum microbiota, and reduced the content of cecum bioamine, with no negative effect on the growth performance of pigs. © 2022 Society of Chemical Industry.

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Effects of high fibre and low protein diets on performance, digestibility, nitrogen excretion and ammonia emission in the heavy pig

Cited by 71 publications

References 35 publications

Digestibility and metabolic utilization of diets containing whole-ear corn silage and their effects on growth and slaughter traits of heavy pigs1

Digestibility and metabolic utilization of diets containing whole-ear corn silage and their effects on growth and slaughter traits of heavy pigs1

Relationships among slurry characteristics and gaseous emissions at different types of commercial Spanish pig farms

Effects of low protein diet with a balanced amino acid pattern on growth performance, meat quality and cecal microflora of finishing pigs

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