Dietary protein effects on growth performance, carcass traits and expression of selected jejunal peptide and amino acid transporters in broiler chickens

Corzo, A.; Loar, II Re; Kidd, M. T.; Burgess, S. C.

doi:10.1590/s1516-635x2011000200008

Cited by 13 publications

(7 citation statements)

References 21 publications

(26 reference statements)

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“…Non-ruminant animals acquire nitrogen from their diet in the form of proteins and other foodstuff (Bergen e Wu 2009). Protein digestion in poultry yields amino acids and peptides, which are, in part, absorbed by the organism and used in new protein synthesis, and in part, eliminated by the kidneys (Corzo et al 2011). Thus, poultry excretion primarily serves to eliminate nitrogenous substances (Donsbough et al 2010); uric acid is the primary metabolite excreted in urine (as a whitish paste).…”

Section: Resultsmentioning

confidence: 99%

Litter quality of broiler fed with to different levels of sulfur amino acid

Carvalho¹,

Neto²,

Martins³

et al. 2018

JABB

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The objective of this study was to determine the effect of sulfur amino acid (methionine+cystine) supplementation included in the diet of broiler chickens raised under Brazilian commercial conditions on the concentration of ammonia gas, moisture, pH, temperature, and nitrogen excretion in litter on the 14th, 28th, and 42nd day of breeding. A total of 900 male chicks of the Cobb500 line were used, distributed in a completely randomized design with five treatments, with six replicates of 30 birds. A basal diet (without methionine) was formulated and was supplemented with DL-methionine (0.072, 0.168, 0.239, 0.311% and 0.058, 0.134, 0.192, 0.250% for days 1 to 21 and days 22 to 42 of breeding respectively) replacing the corn starch in order to achieve the desirable digestible methionine + cysteine levels (0.545 (basal diet), 0.616, 0.711, 0.782 and 0.853%) and (0.514 (basal diet); 0.571; 0.647; 0.704 and 0.761% and digestible methionine + cysteine for the phase 1 to 21 and 22 to 42 days of breeding, respectively. There was no significant effect on the temperature and concentration of ammonia gas in any of the phases evaluated. Met+cys supplementation influenced moisture and pH of litter in all the evaluated phases. For nitrogen, a significant effect was observed at 14 days, not exhibiting effects during the other phases, suggesting that nitrogen excretion increases with increasing levels of met+cys in the diet for up to 14 days.

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Section: Resultsmentioning

confidence: 99%

Litter quality of broiler fed with to different levels of sulfur amino acid

Carvalho¹,

Neto²,

Martins³

et al. 2018

JABB

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“…Another theory for the reduced performance in broilers fed diets with crude protein reduction above four percentage points is related to a likely decrease in the concentration of intestinal amino acids transporters (Corzo et al, ; Nyachoti et al, ; Tuitoek et al, ). In the present study, quail performance was worsened by reducing the dietary protein from 22% to 17.6%.…”

Section: Resultsmentioning

confidence: 99%

“…Some hypotheses for the reduced performance have been discussed, such as: reductions in dietary potassium intake and changes in electrolyte balance (Vieira et al, 2015); changes in the ratio between essential and non-essential amino acids (Waldroup et al, 2005a); increases in serum ammonia concentrations (Namroud et al, 2008), indicating an imbalance between amino acids; reductions in serum levels of triiodothyronine and thyroxine (Namroud et al, 2010); and changes in intestinal transporters (Corzo et al, 2011).…”

Section: Re Sults and Discussionmentioning

confidence: 99%

“…Several research studies try to elucidate the cause of the impaired performance in broilers fed diets with reduced protein levels. The hypotheses include: decreases in digestible glycine levels (Namroud et al, 2010;Vasconcellos et al, 2015Vasconcellos et al, , 2011Yuan et al, 2012); decreases in digestible lysine levels (Saima, Jabbar, Mehmud, Abbas, & Mahmood, 2010); decreases in digestible glycine/threonine ratio (Waldroup, Jiang, & Fritts, 2005b); changes in electrolyte balance (Han, Suzuki, Parsons, & Baker, 1992;Vieira et al, 2015); decreases in the ratio between essential and non-essential amino acids (Waldroup et al, 2005a); reductions in dietary nitrogen levels (Bregendahl, Sell, & Zimmerman, 2002); reductions in feed intake (Namroud et al, 2010); changes in serum levels of triiodothyronine, thyroxine and ammonia (Carew, Evarts, & Alster, 1998;Namroud et al, 2008Namroud et al, , 2010; changes in the concentration of intestinal transporters, as well as in the absorption efficiency (Corzo, Loar, Kidd, & Burgess, 2011;Nyachoti, Omogbenigun, Rademacher, & Blank, 2006;Tuitoek, Young, de Lange, & Kerr, 1997;Wu et al, 2015) and increases in fat content in the carcass (Yamazaki, Murakami, & Takemasa, 1998), which reduces muscle tissue deposition.…”

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confidence: 99%

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Supplementation of L‐glycine and L‐glutamate to Japanese quails from 01 to 36 days of age using the ideal protein concept

Vieira

Silva

Costa

et al. 2018

Animal Physiology Nutrition

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Experiment I: T1‐1 = basal diet with 25% crude protein (CP) + limiting amino acids (LA); T1‐2 = 20% CP + LA; T1‐3 = 20% CP + LA + L‐glycine; T1‐4 = 20% CP + LA + L‐glutamate; T1‐5 = 20% CP + LA + L‐glycine + L‐glutamate. Experiment II: T2‐1 = basal diet with 22% CP + LA; T2‐2 = 20% CP + LA; T2‐3 = 17.6% CP + LA + L‐glycine; T2‐4 = 17.6% CP + LA + L‐glutamate; T2‐5 = 17.6% CP + LA + L‐glycine + L‐glutamate. The reduction of dietary protein based on the concept of ideal protein decreases nitrogen excretion in quails when L‐glycine is added to the diets. Quails fed diets supplemented with L‐glutamate as the non‐specific nitrogen source equivalent to the nitrogen level of the control diet had increased nitrogen excretion. However, quails had reduced nitrogen excretion in both experiments when L‐glycine was added to diets with L‐glutamate. Carcass fat was increased by reducing dietary protein, but fat deposition was reduced by adding L‐glutamate and L‐glycine, or both. The dietary addition of L‐glutamate and L‐glycine in quails based on the ideal protein concept is not necessary (Exp. I). Although the total nitrogen, electrolytic balance and glycine level were adjusted in diets, quails had decreased performance. Therefore, other hypotheses besides protein reduction need to be studied (Exp. II). Protein reduction with supplementation of only limiting essential amino acids does not affect quail performance. Dietary addition of L‐glycine reduces nitrogen excretion.

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“…(1992) Male 0 to 42 193 224 2042 2077 1.940 1.880 17.1 3 14.4 3 Kidd and Kerr (1996) Mixed 21 to 42 168 200 1323 1386 2.110 2.040 23.8 3 19.9 3 Aletor et al. (2000) Male 22 to 42 153 225 1539 1522 1.920 1.800 10.6 2 7.1 2 Erwan et al, 2009 Mixed 21 to 42 180 200 1170 1226 1.920 2.130 12.4 3 11.3 3 Corzo et al. (2011) Male 21 to 42 189 202 2030 2050 1.830 1.770 15.7 3 13.5 3 Belloir et al.…”

Section: Introductionmentioning

confidence: 99%

Facilitating the acceptance of tangibly reduced-crude protein diets for chicken-meat production

et al. 2020

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Inclusions of non-bound amino acids particularly methionine, lysine and threonine, together with the “ideal protein” concept have allowed nutritionists to formulate broiler diets with reduced crude protein (CP) and increased nutrient density of notionally “essential” amino acids and energy content in recent decades. However, chicken-meat production has been projected to double between now and 2050, providing incentives to reduce dietary soybean meal inclusions further by tangibly reducing dietary CP and utilising a larger array of non-bound amino acids. Whilst relatively conservative decreases in dietary CP, in the order of 20 to 30 g/kg, do not negatively impact broiler performance, further decreases in CP typically compromise broiler performance with associated increases in carcass lipid deposition. Increases in carcass lipid deposition suggest changes occur in dietary energy balance, the mechanisms of which are still not fully understood but discourage the acceptance of diets with reductions in CP. Nevertheless, the groundwork has been laid to investigate both amino acid and non-amino acid limitations and propose facilitative strategies for adoption of tangible dietary CP reductions; consequently, these aspects are considered in detail in this review. Unsurprisingly, investigations into reduced dietary CP are epitomised by variability broiler performance due to the wide range of dietary specifications used and the many variables that should, or could, be considered in formulation of experimental diets. Thus, a holistic approach encompassing many factors influencing limitations to the adoption of tangibly reduced CP diets must be considered if they are to be successful in maintaining broiler performance without increasing carcass lipid deposition.

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Dietary protein effects on growth performance, carcass traits and expression of selected jejunal peptide and amino acid transporters in broiler chickens

Cited by 13 publications

References 21 publications

Litter quality of broiler fed with to different levels of sulfur amino acid

Litter quality of broiler fed with to different levels of sulfur amino acid

Supplementation of L‐glycine and L‐glutamate to Japanese quails from 01 to 36 days of age using the ideal protein concept

Facilitating the acceptance of tangibly reduced-crude protein diets for chicken-meat production

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