Effects of low-protein diets supplemented with crystalline amino acids on performance and intestinal development in piglets over the first 2 weeks after weaning

Yue, Longyao; Qiao, Shiyan

doi:10.1016/j.livsci.2007.06.018

Cited by 121 publications

(105 citation statements)

References 27 publications

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“…In accordance with previous workers (e.g., Ball and Aherne, 1987;Heo et al, 2008;Yue and Qiao, 2008), feeding a diet decreased in CP reduced the incidence of PWD commensurate with increased fecal DM content in noninfected pigs, although effects were less consistent in the initial week after weaning because an interaction occurred between feeding regimen and ETEC infection. In this case, although feeding regimen had no effect in the noninfected pigs, feeding an LP diet significantly reduced PWD in their challenged counterparts.…”

supporting

confidence: 91%

“…Feeding decreased levels of dietary CP reduced concentrations of PUN and fecal NH 3 -N at 7 and 14 d after weaning, in accordance with other work (Hansen et al, 1993;Bikker et al, 2006;Nyachoti et al, 2006;Yue and Qiao, 2008). Greater concentrations of fecal NH 3 -N in the HP14-fed pigs presumably reflected the quantitatively greater entry of proteinaceous material into the distal GIT, given the lack of any difference in feed intake among treatments.…”

supporting

confidence: 87%

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Feeding a diet with decreased protein content reduces indices of protein fermentation and the incidence of postweaning diarrhea in weaned pigs challenged with an enterotoxigenic strain of Escherichia coli1

Heo

Kim

Hansen

et al. 2009

Journal of Animal Science

142

121

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This study evaluated the effect of feeding low protein (LP) diets for 7 or 14 d after weaning or a high protein (HP) diet for 14 d after weaning on postweaning diarrhea (PWD), indices of protein fermentation, and production in pigs infected or not infected per os with an enterotoxigenic strain of Escherichia coli. A total of 72 female pigs weaned at aged 21 d with initial BW of 5.9 ± 0.12 kg were used in a 3 × 2 factorial arrangement of treatments. The factors were 3 feeding regimens associated with different combinations of feeding duration and diet CP level: (i) HP diet (256 g of CP/kg) fed for 14 d after weaning, (ii) LP diet (175 g of CP/kg) fed for 7 d after weaning, and (iii) LP diet fed for 14 d after weaning; and infection or noninfection with an enterotoxigenic strain of E. coli (10 7 cfu/ mL, serotype O149:K91:K88) at 72, 96, and 120 h after weaning. The LP diets were fortified with crystalline Ile and Val to achieve an ideal AA pattern. A second-stage diet (213 g of CP/kg) was fed to pigs at the conclusion of each feeding regimen, and the study finished 4 wk after weaning. None of the diets contained antimicrobials. Feeding the LP diets decreased (P < 0.001) plasma urea nitrogen, fecal ammonia nitrogen concentrations, and the incidence of PWD, but increased (P = 0.001) fecal DM content compared with pigs fed HP in the 2-wk period after weaning. Infection increased shedding of β-hemolytic E. coli (P < 0.001), the incidence of PWD (P < 0.001), and fecal ammonia nitrogen concentrations (P < 0.01), but did not interact with feeding regimen, after weaning. Pigs challenged with E. coli grew more slowly (P < 0.001) and had decreased G:F (P < 0.01) compared with nonchallenged pigs in the 4-wk period after weaning. Feeding an LP diet for 7 or 14 d after weaning markedly reduced the incidence of PWD after infection with β-hemolytic E. coli. Infection was associated with decreased indices of protein fermentation in the distal gastrointestinal tract but did not compromise the growth of weaner pigs in the 4-wk period after weaning.

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supporting

confidence: 91%

supporting

confidence: 87%

Feeding a diet with decreased protein content reduces indices of protein fermentation and the incidence of postweaning diarrhea in weaned pigs challenged with an enterotoxigenic strain of Escherichia coli1

Heo

Kim

Hansen

et al. 2009

Journal of Animal Science

142

121

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“…Thus, low-crude protein diets have special environmental advantages for pig production. Moreover, studies with growing and fi nishing pigs also has been shown that low-crude protein diets supplemented with industrial amino acids had economic advantages compared to pigs fed normal CP diets when performance was maintained (YUE & QIAO, 2008).…”

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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“…Bikker et al (2006) pointed out that dietary protein level did not affected maltase, sucrase or aminopeptidase N activity in jejunum, but Pinheiro et al (2013) reported that dietary protein restriction increased disaccharidase activity such as lactase and sucrase in the small intestine. Yue and Qiao (2008) demonstrated that reducing dietary crude protein (CP) concentration from 23.1% to 17.2%, but not partial reduction to 18.9%, changed gut morphology and reduced disaccharidase activities in the small intestine. Some studies indicate that pancreatic enzymes were positively associated with dietary protein level and low dietary protein inhibited synthesis of pancreatic enzymes and pancreatic growth; little is known of the possible influence of low protein diets on pancreatic lipase (Lindemann et al, 1986;Makkink et al, 1994).…”

Section: Introductionmentioning

confidence: 99%

Influence of low protein diets on gene expression of digestive enzymes and hormone secretion in the gastrointestinal tract of young weaned piglets

Tian

Yang

et al. 2016

J. Zhejiang Univ. Sci. B

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Abstract:To investigate dietary protein level effects on digestive mechanisms, weaned piglets were fed for 45 d with diets containing 20%, 17%, or 14% crude protein (CP) supplemented to meet requirements for essential amino acids. This article describes the influence of dietary protein on gastrointestinal hormones and expression of an array of digestive enzymes in the gastrointestinal tract and pancreas. Results indicated that there were no significant differences in expression of enzymes involved in carbohydrate digestion, except for maltase in the duodenum. In the jejunum, amylase expression in pigs fed 20% CP was much higher than that in pigs fed other diets (P<0.05) and maltase expression in those fed 17% CP was higher than that in other treatments (P<0.05). Although there were no remarkable differences in expression of aminopeptidase in the small intestine or carboxypeptidase in the pancreas (P>0.05), there was a trend towards higher expression of various proteases in pigs fed 17% CP. The duodenal expression of enteropeptidase in diets with 14% and 17% CP was significantly higher than that with 20% CP (P<0.05), but treatment differences did not existed in jejunum (P>0.05). The expression of GPR93 as a nutrient-responsive G protein-coupled receptor in 14% and 17% CP diets was significantly higher than that in 20% CP diet in the small intestine (P<0.05). The expressions of genes for pancreatic enzymes, lipase and elastase, were significantly higher in pigs fed diets with low CP, while similar trends occurred for carboxypeptidase, chymotrypsin and amylase. Conversely, the gastric expressions of pepsinogen A and progastricsin were lower with the 17% CP diet. Differences between treatments were found in the gastric antral contents of cholecystokinin and somatostatin: both increased in pigs fed 17% CP, accompanied by decreased content of motilin, which was also seen in plasma concentrations. These patterns were not reflected in duodenal contents. In general, 17% dietary CP was beneficial to the digestion of nutrient substance in the gastrointestinal tract.

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Effects of low-protein diets supplemented with crystalline amino acids on performance and intestinal development in piglets over the first 2 weeks after weaning

Cited by 121 publications

References 27 publications

Feeding a diet with decreased protein content reduces indices of protein fermentation and the incidence of postweaning diarrhea in weaned pigs challenged with an enterotoxigenic strain of Escherichia coli1

Feeding a diet with decreased protein content reduces indices of protein fermentation and the incidence of postweaning diarrhea in weaned pigs challenged with an enterotoxigenic strain of Escherichia coli1

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

Influence of low protein diets on gene expression of digestive enzymes and hormone secretion in the gastrointestinal tract of young weaned piglets

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