Research Note: The effects of genotype, sex, and feeding regime on performance, carcasses characteristic, and microbiota in chickens

Tůmová, E.; Chodová, Darina; Skřivanová, E.; Laloučková, Klára; Salmonová, Hana Šubrtová; Ketta, Mohamed; Machander, Vlastislav; Cotozzolo, Elisa

doi:10.1016/j.psj.2020.11.047

Cited by 22 publications

(22 citation statements)

References 8 publications

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“…Moreover, the daily weight gain (DWG) in males was significantly higher at p > 0.05. A similar trend was observed by van der Sluis [39] in ISA broiler chickens fed with organic feed and T ůmová et al [20] for Ross, JA and Dual chickens. In traditional rearing systems (intensive vs. semi-intensive), the sex of the birds was a factor determining slaughter performance, as confirmed in studies by Cygan-Szczegielniak et al [7].…”

Section: Growth and Slaughter Performancessupporting

confidence: 88%

“…A clear sexual dimorphism in relation to body weight was also noted in Milanino hens managed in the free-range system [41]. The inherent differences in the size of carcasses between the sexes directly influence other parameters of the slaughter performance in chickens [6,7,20,21].…”

Section: Growth and Slaughter Performancesmentioning

confidence: 89%

“…Sex, however, is a vital factor determining both the physicochemical parameters as well as the growth and slaughter performance of chickens [7]. In addition, the evident impact of sexual dimorphism on the size of carcasses directly affects other parameters of the slaughter performance of chickens and the quality of meat [6,7,20,21]. Usually, males have a higher final live body weight (BW), daily weight gain and carcass weight, which can affect and be related to other parameters [7,14].…”

Section: Introductionmentioning

confidence: 99%

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Growth Performance, Carcass Characteristics and Meat Quality of Organically Reared Broiler Chickens Depending on Sex

Cygan-Szczegielniak

Bogucka

2021

Animals

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Given the growing interest of consumers in naturally produced meat, we decided to examine the muscles of Ross 308 broiler chickens kept in an ecological system, with the division into two research groups depending on sex. All the analyses were carried out using the appropriate methods recommended by the AOAC and in accordance with the Polish standards (PN), which are described in detail in the relevant section of the publication. The aim of the experiment was to investigate the effect of sex on the growth performance, carcass traits and meat quality, as well as the fatty acid profile and histological parameters, of the pectoral muscles from organic broiler chickens. A total of 60 one-day-old Ross 308 chickens (half males and half females) were divided into two groups, according to the sex, and reared under organic conditions (Org.) until 82 days of age (ten birds, i.e., five males and five females in each of three pens; replications for experimental groups). Compared with the female group, the male group had a higher final BW and carcass weight (p < 0.05). The males had a better growth and slaughter performance than the females. The meat quality traits and fatty acids content were also affected by sex. The meat from females showed a significantly higher (p < 0.05) protein, dry matter, fiber diameter and shear force and a significantly lower (p < 0.05) fat level than the male group. In this research, the suitability of these fast-growing broilers for natural and organic production systems has been researched with regard to the performance, meat quality and histological characteristics of the muscles.

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Section: Growth and Slaughter Performancessupporting

confidence: 88%

Section: Growth and Slaughter Performancesmentioning

confidence: 89%

Section: Introductionmentioning

confidence: 99%

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Growth Performance, Carcass Characteristics and Meat Quality of Organically Reared Broiler Chickens Depending on Sex

Cygan-Szczegielniak

Bogucka

2021

Animals

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“…Moreover, several studies undertaken over the last decade have shown the relevance of the intestinal microbiota in animal growth and health; most of them have investigated poultry gut microbiota composition and modifications under different dietary treatments [33][34][35][36]. The described taxonomic profiles in each GIT trait differ considerably among studies due to many factors, including sex, individual genetics, diet, antimicrobials, and animal husbandry [37]. However, several studies demonstrated that the early bacterial community, dominated by Enterobactericeae and, to a lesser extent, by Enterococcus, increased its diversity within the first days of life, stabilizing immediately after 14 days [38] and that it increases in cell densities in the distal section of the GIT with age [39].…”

Section: Discussionmentioning

confidence: 99%

Analysis of the Microbial Intestinal Tract in Broiler Chickens during the Rearing Period

Stamilla

Ruiz-Ruiz

Artacho

et al. 2021

Biology

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Gut microbiota contributes to animal health. However, identifying which microorganisms or associated functions are involved remains, still, difficult to assess. In the present study, the microbiota of healthy broiler chickens, under controlled diet and farm conditions, was investigated by 16S rRNA gene sequencing in four intestine segments and at four ages. In detail, 210 Ross-308 male chickens were raised according to the EU guidelines and fed on a commercial diet. The duodenum, jejunum, ileum, and caecum microbiota were analyzed at 11, 24, 35, and 46 days of life. Although the microbial composition was revealed as homogeneous 11 days after chicks hatched, it was found to be similar in the proximal intestine segments and different in ileum and caecum, where almost the same genera and species were detected with different relative abundances. Although changes during the later growth stage were revealed, each genus remained relatively unchanged. Lactobacillus mostly colonized the upper tract of the intestine, whereas the Escherichia/Shigella genus the ileum. Clostridium and Bacteroides genera were predominant in the caecum, where the highest richness of bacterial taxa was observed. We also analyze and discuss the predicted role of the microbiota for each intestine segment and its potential involvement in nutrient digestion and absorption.

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“…Chicken genotype affects the microbiota ( Pandit et al, 2018 ; Ji et al, 2020 ; Tumova et al, 2021 ), although this effect appears to be limited to specific taxa ( Chintoan-Uta et al, 2020 ; Wen et al, 2021 ). Kers et al (2018) compiled data from 12 studies reporting 16S rRNA sequencing of cecal samples of Cobb and Ross breeds.…”

Section: The Microbiota Of the Chicken Intestinal Tractmentioning

confidence: 99%

Centennial Review: Factors affecting the chicken gastrointestinal microbial composition and their association with gut health and productive performance

Bindari

Gerber

2022

Poultry Science

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Maintenance of “gut health” is considered a priority in commercial chicken farms, although a precise definition of what constitutes gut health and how to evaluate it is still lacking. In research settings, monitoring of gut microbiota has gained great attention as shifts in microbial community composition have been associated with gut health and productive performance. However, microbial signatures associated with productivity remain elusive because of the high variability of the microbiota of individual birds resulting in multiple and sometimes contradictory profiles associated with poor or high performance. The high costs associated with the testing and the need for the terminal sampling of a large number of birds for the collection of gut contents also make this tool of limited use in commercial settings. This review highlights the existing literature on the chicken digestive system and associated microbiota; factors affecting the gut microbiota and emergence of the major chicken enteric diseases coccidiosis and necrotic enteritis; methods to evaluate gut health and their association with performance; main issues in investigating chicken microbial populations; and the relationship of microbial profiles and production outcomes. Emphasis is given to emerging noninvasive and easy-to-collect sampling methods that could be used to monitor gut health and microbiological changes in commercial flocks.

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Research Note: The effects of genotype, sex, and feeding regime on performance, carcasses characteristic, and microbiota in chickens

Cited by 22 publications

References 8 publications

Growth Performance, Carcass Characteristics and Meat Quality of Organically Reared Broiler Chickens Depending on Sex

Growth Performance, Carcass Characteristics and Meat Quality of Organically Reared Broiler Chickens Depending on Sex

Analysis of the Microbial Intestinal Tract in Broiler Chickens during the Rearing Period

Centennial Review: Factors affecting the chicken gastrointestinal microbial composition and their association with gut health and productive performance

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