Breast meat quality in males and females of fast-, medium- and slow-growing chickens fed diets of 2 protein levels

Chodová, Darina; Tůmová, E.; Ketta, Mohamed; Skřivanová, V.

doi:10.1016/j.psj.2021.01.020

Cited by 28 publications

(27 citation statements)

References 23 publications

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“…Meat color is the most important appearance quality trait by the consumer and is used as an indicator of freshness and wholesomeness ( 32 ). In this study, we found that the LP diet improved the meat quality by improving the meat color in finishing pigs, especially for the yellowness (b * value) of 24 and 48 h. Similarly, a recent study also showed that the LP diet was associated with changes in meat color intensity, drip loss, and muscle fiber area in chickens ( 33 ). Indeed, dietary protein intake has been shown to regulate the expression of key genes for lipid metabolism in the skeletal muscle of finishing pigs ( 34 ).…”

Section: Discussionsupporting

confidence: 56%

Low Protein Diet Improves Meat Quality and Modulates the Composition of Gut Microbiota in Finishing Pigs

Zhu

Yang

et al. 2022

Front. Vet. Sci.

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This study investigated the effect of a low protein (LP) diet on growth performance, nitrogen emission, carcass traits, meat quality, and gut microbiota in finishing pigs. Fifty-four barrows (Duroc × Landrace × Yorkshire) were randomly assigned to three treatments with six replicates (pens) of three pigs each. The pigs were fed with either high protein (HP, 16% CP), medium protein (MP, 12% CP), and LP diets (10% CP), respectively. The LP diets did not influence the growth performance, but significantly decreased the plasma urea nitrogen contents and fecal nitrogen emission (P < 0.05). The LP diet significantly decreased the plasma contents of malondialdehyde (MDA) and increased the plasma glutathione (GSH) contents (P < 0.05). The LP diets significantly increased the backfat thickness at the first and last ribs, L* (lightness) value of meat color, and muscle fiber density in the longissimus dorsi (P < 0.05). The messenger RNA (mRNA) expression of fatty acid synthetase (FAS), peroxisome proliferator-activated receptor-gamma (PPARγ), leptin, and acetyl-CoA carboxylase (ACC) was significantly downregulated, while that of carnitine palmitoyltransferase 1 (CPT1) and myosin heavy chain (MYHC) IIx in the longissimus Dorsi muscle was significantly upregulated by LP diets (P < 0.05). The 16S sequencing analysis showed that the abundance of unidentified Bacteria at the phylum level, and Halanaerobium and Butyricicoccusat at the genus level in the colonic digesta were significantly decreased by LP diet (P < 0.05). The LP diet significantly decreased the observed species of α-diversity in both ileal and colonic microbiota (P < 0.05). Spearman correlation analysis identified a significant positive correlation between the abundance of the ileal genera Streptococcus and L* value at 24 and 48 h, and a significant negative correlation between unidentified_Ruminococcasceae in both ileum and colon with L* value at 24 h (P < 0.05). Collectively, the LP diet supplemented with lysine, methionine, threonine, and tryptophan could reduce the fecal nitrogen emission without affecting growth performance and improve meat quality by regulating the antioxidant capacity and gene expression involved in fat metabolism as well as modulating the gut microbiota composition in finishing pigs.

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Section: Discussionsupporting

confidence: 56%

Low Protein Diet Improves Meat Quality and Modulates the Composition of Gut Microbiota in Finishing Pigs

Zhu

Yang

et al. 2022

Front. Vet. Sci.

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“…Furthermore, slow-growing ISA Dual chickens showed lower ash content than both fast-and medium-growing genotypes. Interestingly, Chodova et al (2021a) did not find any significant differences in the cholesterol or ash content between genotypes. Similarly, in an earlier work by Fanatico et al (2007), differences were not found in the ash content in breast meat between fast-, medium-and slow-growing chickens.…”

Section: Carcass Characteristicsmentioning

confidence: 74%

“…As a result, modern meat-type genotypes reach more than 2 kg body weight at 35 days of age (Zaid et al 2020). Intensive selection for a high growth rate and breast yield has negative consequences, manifested by increased susceptibility of poultry to some health issues (Chodova et al 2021a). Over the last 15 years, due to significant economic losses, Supported by the Ministry of Agriculture of the Czech Republic (Project NAAR No.…”

mentioning

confidence: 99%

“…Medium-growing chickens are a crossbreed of fast-and slow-growing genotypes and are suitable for semi-intensive breeding systems. Slow-growing chickens are usually male layer hybrids used for meat production and dual-purpose chickens (Chodova et al 2021a). As a good alternative, dual-purpose chickens offer the use of both sexes, hens for eggs and cockerels for meat.…”

mentioning

confidence: 99%

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Carcass characteristics and breast meat quality in fast-, medium- and slow-growing chickens

Valenta¹,

Chodová²,

Tůmová³

et al. 2022

CZECH J ANIM SCI

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The aim of the present study was to compare carcass characteristics and meat quality of fast- (Ross 308), medium- (Hubbard JA757) and slow-growing (ISA Dual) chickens (n = 1 980). When the chickens reached an average live weight of 2 kg, 40 birds (males to females, 1 : 1) of each genotype were randomly selected and slaughtered for carcass analysis. Pectoralis major (PM) muscle samples were taken to determine the physical and chemical parameters of the meat quality. The fast- and medium-growing genotypes had higher (+3.24% and +3.84%, respectively) dressing out percentages than the slow-growing chickens. As expected, the breast percentage significantly decreased in the order of fast growth > medium growth > slow growth. The abdominal fat percentage was the lowest in Ross 308 chickens, but the abdominal fat percentage in JA757 and ISA Dual chickens did not differ. For edible organs, fast- and medium-growing chickens had heavier hearts and livers than slow-growing chickens. In contrast, ISA Dual chickens showed heavier gizzards. Genotype dramatically affected the chemical composition of PM muscle. The ISA Dual chickens exhibited a significantly higher proportion of dry matter and protein and lower ether extract and cholesterol content than Ross 308 chickens, with intermediate values for JA757 chickens. The ISA Dual group had a lower ash content than Ross 308 and JA757 groups. In terms of physical parameters, the ISA Dual chickens had higher lightness and yellowness and lower redness, pH 24, and cooking loss than those of the other genotypes. Concerning all genotypes, the shear force values increased from fast- to slow-growing chickens. In conclusion, this study found a difference between the genotypes. Although the slow-growing chickens showed the lowest dressing out and breast percentages compared with the other genotypes, the breast meat of the slow-growing chickens had more favourable nutritional properties.

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“…With respect to the effect of sex as a main factor, the lower CSA of type IIB fibres was detected in rabbit females and chicken males, which reflected the higher density https://doi.org/10.17221/186/2021-CJAS of these fibres in rabbit females and chicken males. In contrast, the sex in chickens had no influence on muscle fibre characteristics (Chodova et al 2021b).…”

Section: Histochemical Measurements Of Muscle Fibresmentioning

confidence: 87%

A comparative study on the effect of quantitative feed restriction in males and females of broiler chickens, rabbits and nutrias. II. Meat quality

Tůmová¹,

Chodová²,

Volek³

et al. 2022

CZECH J ANIM SCI

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The objective of the study was to evaluate the effects of feed restriction and sex on the physical, chemical and histochemical parameters of meat quality in chickens, rabbits and nutrias. Feed restriction was applied at a rate of 70% ad libitum from 14 to 21 days of age in chickens, 70% ad libitum from 42 to 49 days of age in rabbits, and 70% ad libitum from 12 to 15 weeks of age in nutrias. Animals were fed ad libitum prior to and following restriction. The results showed stronger effects of feed restriction, sex, and their interaction on the meat quality of broiler chickens than in rabbits and nutrias. The effect of feed restriction, sex and their interaction were mainly observed in the nutritional value of meat, while physical measurements of meat were negligibly affected. The interaction between feed restriction and sex affected the cross-sectional area of muscle fibre only in rabbits and nutrias. The data indicated the relationships between compensatory growth, muscle fibre distribution, and nutritional value of meat.

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Breast meat quality in males and females of fast-, medium- and slow-growing chickens fed diets of 2 protein levels

Cited by 28 publications

References 23 publications

Low Protein Diet Improves Meat Quality and Modulates the Composition of Gut Microbiota in Finishing Pigs

Low Protein Diet Improves Meat Quality and Modulates the Composition of Gut Microbiota in Finishing Pigs

Carcass characteristics and breast meat quality in fast-, medium- and slow-growing chickens

A comparative study on the effect of quantitative feed restriction in males and females of broiler chickens, rabbits and nutrias. II. Meat quality

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