An index to measure the activity attitude of broilers in extensive system

Failla, S.; Buttazzoni, L.; Zilio, David Meo; Contò, Michela; Renzi, Gianluca; Castellini, Cesare; Amato, Monica Guarino

doi:10.1016/j.psj.2021.101279

Cited by 9 publications

(10 citation statements)

References 31 publications

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“…The ratio between n-3 LC-PUFA and ALA could be taken as an indicator of energy consumption (β-oxidation; (17)). This should be higher in oxidative than in glycolytic muscles [ 19 ] and therefore in animals with higher kinetic activity [ 33 ]. Activity Index = (Σ n-3 PUFA)/(C18:3n-3) …”

Section: Methodsmentioning

confidence: 99%

Indexing of Fatty Acids in Poultry Meat for Its Characterization in Healthy Human Nutrition: A Comprehensive Application of the Scientific Literature and New Proposals

et al. 2022

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Chicken meat is becoming the most consumed in the world for both economic and nutritional reasons; regarding the latter, the lipid profile may play positive or negative roles in the prevention and treatment of diseases. In this study, we define the state of the art of lipid-based nutritional indexes and used the lipid content and fatty acid profile (both qualitative and quantitative) of breast meat of two poultry genotypes with different growth rates and meat traits. Further, we summarize and review the definitions, implications, and applications of nutritional indexes used in recent years and others of our own design to provide a useful tool to researchers working in the field of meat quality (not only in poultry) to select the most appropriate index for their own scientific purposes. All indexes show advantages and disadvantages; hence, a rational choice should be applied to consider the nutritional effect of meat on human health and for a possible assessment of the most suitable rearing systems (genotype, feeding, farming system or postmortem handling).

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Section: Methodsmentioning

confidence: 99%

Indexing of Fatty Acids in Poultry Meat for Its Characterization in Healthy Human Nutrition: A Comprehensive Application of the Scientific Literature and New Proposals

et al. 2022

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“…Mancinelli et al [ 6 ] demonstrated that although a prerequisite of adaptability to ERS is a daily weight gain (DWG) below 45 g/d, the genotype can also affect this adaptability. Accordingly, slow weight gain is a prerequisite of adaptation, but SG chickens also differ in other aspects, such as walking and foraging behavior [ 8 , 9 , 12 , 13 ], demonstrating that interest in outdoor spaces strongly depends on the intrinsic behavior and genetics of animals.…”

Section: Introductionmentioning

confidence: 99%

Intake of nutrients (polyunsaturated fatty acids, tocols, and carotenes) and storage efficiency in different slow-growing chickens genotypes reared in extensive systems

Mattioli

Mancinelli²,

Bosco³

et al. 2022

PLoS ONE

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An extensive rearing system (ERS) for poultry requires an outdoor run, which enhances the foraging activity of chickens. Slow-growing (SG) strains are more adapted to ERS than fast-growing (FG); and generally, have higher levels of bioactive compounds in their meat. The aim of this paper was to assess the storage efficiency of n-3 and n-6 polyunsaturated fatty acids (PUFA), tocols and carotenes in the meat of seven commercial SG genotypes (SG1-7). One hundred SG chicks/strain of both sexes were included and their walking activity (High- or Low-W) was classified: SG1-4, HW comprised more than 10% of the time budget, and SG5-7, less than 10% (LW). Chickens were reared in pens (4 pens/strain) with indoor (0.10 m2/bird) and outdoor (4 m2/bird) areas, and they were fed the same diet ad libitum (starter feed for 1–21 d, grower feed from 22 d to slaughter at 81 d). The chickens were weighed weekly; feed consumption and grass intake were also estimated. At 81 days of age, 32 chickens/genotype were selected on the basis of the average weight (1:1, M:F) and slaughtered. The breast, thigh and drumstick meat were excised from 30 carcasses/genotype, sampled and stored at -20°C until analysis. Nutrients (e.g., n-3, n-6, carotenes and tocols) of feed, grass and meat were analyzed. The storage efficiency of nutrients was estimated as the ratio between the amount deposited in the body muscles (OUT) and the dietary intake (feed and grass, IN). The genotype affected chickens foraging behavior and the intake of nutrients. For SG1, SG2 and SG3, more than 50% of the intake of n-3 came from grass, whereas in the other genotypes, less than 20%. Accordingly, chickens that foraged more showed better meat nutritional profiles (less fat, more n-3 and antioxidants), which, in ERS, was ascribed to grass ingestion. However, the storage efficiency of nutrients into meat was inversely correlated with the grass intake: strains with higher grass intake (SG1, SG2, and SG3) had lower storage rates. Several hypotheses were proposed to explain these trends.

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“…In addition, bone health and gait scores can also be affected by the genotype. Slow-growing and active genotypes have better gait scores, better tibia conformation, and less tibial dyschondroplasia [ 65 , 67 , 89 , 90 , 91 ]. A study that compared the breast and gastrocnemius fiber muscle of two fast-growing lines reared in different housing conditions found that pathological changes were mainly seen in birds with outdoor access, and were indicative of their worse adaptability to the outdoors [ 92 , 93 ].…”

Section: Methodology Of the Literature Reviewmentioning

confidence: 99%

“…Several authors investigated the genetic ability of chickens to utilize open air for movement and pasturing [ 17 , 84 , 88 , 90 , 91 , 94 , 95 , 96 ], underlining the differences that the activity of genotypes brought to different welfare and meat traits. Meat from pasture-raised chickens may present nutritional benefits, such as flavor, and contribute to positive sensory attributes of meat [ 97 ].…”

Section: Methodology Of the Literature Reviewmentioning

confidence: 99%

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Adaptability Challenges for Organic Broiler Chickens: A Commentary

Amato¹,

Castellini

2022

Animals

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As organic and conventional poultry production increased in the last decade, so did consumers’ concerns, sustainability requirements, and animal welfare as well as health issues. According to Reg. EU 848/2008 on organic production, poultry must be adapted to organic outdoor systems and cope with all the regulatory constraints in terms of nutrition, health, and welfare. Adaptability must take into account the above challenges, constraints, and concerns. Chicken adaptability should not only mean being able to use pasture and outdoor areas, but also mean being able to overcome, or be resilient to, the challenges of organic farming without compromising welfare, performance, and product quality. This commentary identifies solutions to the new challenges that organic poultry chains must face in future productive scenarios, detects consumer viewpoints to provide a perspective on organic poultry production, and summarizes as well as defines chicken adaptability to organic production, assessing the main factors of chicken adaptability.

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An index to measure the activity attitude of broilers in extensive system

Cited by 9 publications

References 31 publications

Indexing of Fatty Acids in Poultry Meat for Its Characterization in Healthy Human Nutrition: A Comprehensive Application of the Scientific Literature and New Proposals

Indexing of Fatty Acids in Poultry Meat for Its Characterization in Healthy Human Nutrition: A Comprehensive Application of the Scientific Literature and New Proposals

Intake of nutrients (polyunsaturated fatty acids, tocols, and carotenes) and storage efficiency in different slow-growing chickens genotypes reared in extensive systems

Adaptability Challenges for Organic Broiler Chickens: A Commentary

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