Desempenho, carcaça e cortes de frangos caipira Francês Barré (Gris Barré Cou Plumé)

Santos, Marilú; Vieira, S. S.; Tavares, Fernando Barbosa; Andrade, Polyana de Assis; Manno, Maria Cristina; Costa, Heiciane Soares da; Moreira, Angelita da Silveira

doi:10.4321/s0004-05922012000200013

Cited by 7 publications

(8 citation statements)

References 3 publications

(4 reference statements)

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“…Differences weren't observed for carcass yield, feathers, legs and fat (p>0.05) between nutritional plans, housing densities and interaction. It was observed that nutritional plans with more phases, regardless of the density used, showed better results for carcass traits, with similar results observed by Lisboa et al (1999), Figueiredo et al (1999), Araújo et al (1999), Takahashi (2006) and Santos et al (2012) that studied different commercial lineages of broilers and didn't observed significant differences in relationship of management and carcass traits. Researchers affirm that the management is directly related to the carcass results for broilers, but, that doesn't mean that it will always influence the carcass results, cuts or visceras of the birds.…”

Section: Performance Carcass Traits and Economic Availability Of Mussupporting

confidence: 72%

Performance, Carcass Traits and Economic Availability of Muscovy Ducks Fed on Different Nutritional Plans in Different Housing Densities

Rufino

Cruz

Melo

et al. 2017

Rev. Bras. Cienc. Avic.

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The present study aimed to evaluate ducks on performance, carcass traits and economic availability, fed on different phases of nutritional plans and in different housing densities. Two hundred and forty Muscovy ducks of creole lineage were used, distributed in boxes with water and food ad libitum. The experimental design was completely randomized in a factorial arrangement of 3x2 with three nutritional plans (3, 4 and 5 phases) and two housing densities (2 and 3 birds/m2) with four replicates. The ducks had weekly performance evaluations, and after 90 days, four birds in each treatment were slaughtered for evaluation of carcass traits. Differences (p<0.05) were observed on performance, carcass traits and economic analysis. The nutritional plans with 3 phases showed better results for feed intake and weight gain, as well as provided lower total cost production and higher operating profit. Ducks in higher densities showed smaller feed intake, weight gain, higher pro-ventricle weight and better results for total meet production, crude income and operating profit. In summary, nutritional plans with reduced phases (3 phases) and extensions of energy-protein relationships showed better results for ducks on performance and carcass traits in densities of 3 birds/m². More studies are necessary to determine other nutritional requirements for ducks in housing for a better nutritional and management control.

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Section: Performance Carcass Traits and Economic Availability Of Mussupporting

confidence: 72%

Performance, Carcass Traits and Economic Availability of Muscovy Ducks Fed on Different Nutritional Plans in Different Housing Densities

Rufino

Cruz

Melo

et al. 2017

Rev. Bras. Cienc. Avic.

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“…There are not many companies that produce muscovy ducks in Brazil, especially due the lack of information's about adequate nutritional requirements, facilities and ideal management (Santos et al, 2012). Brazilian south region concentrates all national production of ducks, muscovy ducks and their derivatives.…”

Section: Introductionmentioning

confidence: 99%

Available Phosphorus Levels in Diets for Muscovy Ducks in Housing

Costa

Cruz

Rufino

et al. 2019

Braz. J. Poult. Sci.

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The present study aimed to determine ideal levels of available phosphorus for muscovy ducks in housing. Two hundred and forty muscovy ducks of creole lineage were used, distributed in boxes with water and food ad libitum. The experimental design was completely randomized with treatments consisting of six nutritional plans that included the initial, growth and termination phases and differed in relation to available phosphorus levels, and four replicates of 10 muscovy ducks each. The birds had weekly performance evaluations, and after 90 days, eight birds (four males and four females) in each treatment were slaughtered for evaluation of carcass traits. Data collected were subjected to Tukey test at 5% of significance. Differences were not observed (p>0.05) in performance. Higher available phosphorus levels presented a positive influence (p<0.05) on carcass. Results presented differences (p<0.05) among sexes for carcass development and commercial cuts, with better feed efficiency of males than females in same period. For mineral composition, differences (p<0.05) were observed to calcium (%), phosphorus (%) and Ca:Pratio. The present study indicates that nutritional plan 2 (initial = 0.60%; growth = 0.55% and termination = 0.50%) presented ideal nutritional requirement of available phosphorus for muscovy ducks in housing, with better carcass development and mineral deposition on bones.

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“…By contrast, Moreira et al (2012) found an increase in the feed intake as the feed energy level increased (3100, 3200 and 3300 kcal/kg), when working with slowgrowing broilers of both sexes of the lineage "Caipira Francês Exótico" from 29 to 90 days old in an intensive system. Santos et al (2012) evaluated 3 feed energy levels (3100, 3200 and 3300 kcal/kg) in broilers of the lineage "Caipira Francês Barré" of both sexes and found no effect of energy variation on feed intake.…”

Section: Results and Discussion Experiments 1 -Metabolizable Energy Inmentioning

confidence: 99%

Metabolizable energy for broilers with different genetic growth potentials under a free-range system

Massi¹,

Lima²,

Machado³

et al. 2018

Bol. Ind. Anim.

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The objective of this study was to evaluate the effects of different levels of metabolizable energy (ME) on performance parameters and carcass characteristics in slow-growing (experiment 1) and fast-growing (experiment 2) broilers in a free-range system. Were evaluated broilers from 35 to 70 days old in experiment 1 and 28 to 49 days old in experiment 2. A completely randomized experimental design was employed in both experiments, with five treatments and four replicates totaling 20 experimental units containing 15 broilers each. The treatments consisted of rations that had increasing metabolizable energy levels obtained by the substitution of soybean oil in the basal diet for the inert sand ingredient. The metabolizable energy levels studied in experiment 1 were 2700, 2800, 2900, 3000 and 3100 kcal/kg, and in experiment 2, they were 2800, 2900, 3000, 3100 and 3200 kcal/kg. In experiment 1, there was a linear (P<0,05) reduction in consumption with the increase in the metabolizable energy level, and a quadratic effect (P<0,05) on the feed conversion was observed, which was estimated as 3046 kcal/kg the level that resulted in a better feed conversion of 2.648. In experiment 2, the metabolizable energy level exerted a significant quadratic effect (P<0,05) on the feed intake and metabolizable energy consumption, with a maximum feed intake (3361.27 g) estimated for 2842 kcal/kg, and the maximum energy intake was estimated at 10020 kcal. The feed conversion decreased linearly (P<0,05) with there was an increase in the studied levels. For broilers reared in a free-range system, for better feed conversion, the recommended metabolizable energy levels are as follows: for slow-growing broilers from 35 to 70 days of age, 3046 kcal/kg, and 3200 kcal/kg is recommended for fast-growing broilers from 28 to 49 days of age.

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Desempenho, carcaça e cortes de frangos caipira Francês Barré (Gris Barré Cou Plumé)

Cited by 7 publications

References 3 publications

Performance, Carcass Traits and Economic Availability of Muscovy Ducks Fed on Different Nutritional Plans in Different Housing Densities

Performance, Carcass Traits and Economic Availability of Muscovy Ducks Fed on Different Nutritional Plans in Different Housing Densities

Available Phosphorus Levels in Diets for Muscovy Ducks in Housing

Metabolizable energy for broilers with different genetic growth potentials under a free-range system

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