Desempenho e qualidade de ovos de galinhas poedeiras criadas em gaiolas enriquecidas e ambiente controlado

Oliveira, Daniele Lopes; Nascimento, José Wallace Barbosa do; Camerini, Nerandi Luiz; Silva, Rafael C.; Furtado, Dermeval A.; Araújo, Tiago Gonçalves Pereira

doi:10.1590/1807-1929/agriambi.v18n11p1186-1191

Cited by 24 publications

(23 citation statements)

References 17 publications

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“…Ambient temperatures above 28 °C were recorded, which are above the ideal conditions of production of laying hens (Baêta & Souza, 2010;Biaggioni et al, 2008). These results are also in agreement with those observed by Oliveira et al 2011 Temperatures above ideal conditions cause a decrease in feed consumption and an increase in water intake on laying hens, and may negatively influence the percentage of laying and weight of eggs (Costa et al, 2012;Deng et al, 2012;Vercese et al, 2012;Kilic & Simsek, 2013;Mack et al, 2013;Guimarães et al, 2014;Oliveira et al, 2014).…”

Section: Methodssupporting

confidence: 85%

Use of Protection Screen in Conventional Aviaries (Californian Type) for Laying Hens

Lourençoni

Yanagi

Oliveira³

et al. 2019

Eng. Agríc.

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The objective of this work was to evaluate the thermal environment inside conventional cages for laying hens, with and without the use of protective screens. This research was conducted in two conventional cages (open cage), where each cage had half of its area surrounded by high density polyethylene mesh (HDPE) with a diameter of 2.0 cm, and the other half was kept fully open. Hyline W-36 and Dekalb Brown laying hens were housed in these cages. The wind speed, dry bulb temperature (tdb), black globe temperature, humidity index (BGHI), and enthalpy (H) were analyzed. The results indicate that the use of the screen reduced the wind speed inside the cage by 0.22 m s-1. The presence of the screen affected tdb, BGHI, and H in some of the evaluated periods evaluated, making these values higher than those of the treatment without screen. However, the obtained values are within or below the thermal comfort range for laying birds. Therefore, the use of HDPE screen in the cages altered their internal environment. However, it is not enough to hinder the thermal comfort of the housed animals.

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Section: Methodssupporting

confidence: 85%

Use of Protection Screen in Conventional Aviaries (Californian Type) for Laying Hens

Lourençoni

Yanagi

Oliveira³

et al. 2019

Eng. Agríc.

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“…The response of the analyzed variables measured in birds kept under different roofs is related to the environmental conditions, since FI is dependent on the thermal conditions and has a direct impact on the performance of the birds (OBA et al, 2012;OLIVEIRA et al, 2014). The differences in thermal conditions between sheds with different roofs are due to the thermal energy of the upper surface being transferred to the lower surface, which can increase the internal temperature of the shed (ABREU et al, 2011).…”

Section: Resultsmentioning

confidence: 99%

Effect of shed rooftype and babassu pie on the productive characteristics of meat quails

Borges

Siqueira

Diniz

et al. 2017

SCA

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We aimed to evaluate the effects of shed roof(SR) typeand the inclusion of babassu pie (BP) in rations on the productive characteristics ofmeat quailsfrom days 14 to 28 and days14 to 40. We studied 896 meatquails. The experimental design was completely randomized with a 4x4 factorial arrangement, using four types of shedroofs (fiber cement, ceramic, straw, and painted fiber cement) and four rations (with 0, 5, 10, and 15% inclusion of babassu pie). The performance variables evaluated from 14 to 28 and 14 to 40 days included food intake (FI, g/bird), mean weight gain (WG, g/bird), food conversion (FC, g/g), mean live weight on day 28 (MW28, g/bird), mean live weight on day 40 (MW40, g/bird), and energy efficiency (EF; g Mcal). After slautherthe birds on day 40, we measured the carcass weight (CW) and the carcass yield (CY, %), obtained for the breast (BY), legs (LGY), and wings (WINGY). We also obtained the relative weight of the heart (HRW), liver (LRW), gizzard (GRW), and intestine (IRW). To compare the economic efficiency between the experimental rations, we analyzed the cost of ration per kg of carcass (CC) and determined the gross margin (GM). Between day 14 and day 28, we found that the use of SR influenced the FI28, WG28, and the MW28 of the quails (p < 0.05). BP did not affect FI28 (p > 0.05), but it linearly improved WG28, FC28, MW28, and EF28. Between days 14 and 40, we found that SR influenced the WG40, FC40, MW40, and EF40 of the quails (p < 0.05) and that a BP increased the FI40, WG40, and MW40 in a quadratic manner. SR and BP did not affect the CW, BY, WINGY, LGY, HRW, LRW,or IRW. However, BP influenced MGRW, which increased linearly with the inclusion of BP. We concluded that a ceramic roof provides better environmental conditions than do other shed roofs. The inclusion of BP improved the performance characteristics, and it was technically feasible to include up to 15% BP in the rations of meat quails. Based on the current cost analysis, however, the inclusion of BP is economically unfeasible. ResumoObjetivou-se avaliar os efeitos do tipo de cobertura do galpão (TC) e da inclusão da torta de babaçu nas rações (TB), sobre as características produtivas de codornas de corte dos 14 aos 28 e dos 14 aos 40 dias de idade. Foram utilizadas 896 codornas de linhagem de corte. O delineamento experimental foi o inteiramente casualizado em arranjo fatorial 4x4, sendo quatro tipos de coberturas nos galpões (fibrocimento, cerâmica, palha e fibrocimento pintado) e quatro rações (0, 5, 10 e 15% de inclusão de torta de babaçu). As variáveis de desempenho avaliadas dos 14 aos 28 e dos 14 aos 40 dias foram: consumo de ração (CR; g/ave), ganho de peso médio (GP; g/ave), conversão alimentar (CA; g/g), peso vivo médio aos 28 dias (PM28; g/ave); peso vivo médio aos 40 dias (PM40; g/ave) e eficiência energética (EF; g/Mcal) e após o abate no 40º dia, foi obtido o peso da carcaça (PC) e o rendimento (%) de carcaça (RC) de peito (RP), pernas (RPN) e asas (RASA), bem como os pesos relativos do coração (PRC), fígado (...

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“…The eggs were arranged horizontally on a support adapted for this assay, so that the poles (major and minor) stayed on the X axis and the probe touched the equatorial region of the eggshell on the Y axis (Figure 1). An item of specific software was used to record the required force employed for total breaking of the bones in kilogram-force (Kgf), according to the methodology adapted from Oliveira et al (2014).…”

Section: Methodsmentioning

confidence: 99%

Correlation among the main parameters of eggshell quality analysis of hen and quail eggs

Reis¹,

Quintero²,

Moraes³

et al. 2019

Bol. Ind. Anim.

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Sixty fresh hen eggs and 60 quail eggs were used in an experiment conducted at UFRRJ in order to survey the correlation between the eggshell quality measurements by average of the following parameters: specific gravity, breaking strength, percentage and thickness of the shell. For hen eggs, specific gravity demonstrated a higher correlation (p <0.05) with shell thickness as compared to other methodologies; the breaking strength correlated with the shell percentage and shell thickness. In quail eggs, there was no correlation (p> 0.05) between specific gravity with the other shell quality analyses. There was a correspondence between breaking strength with the percentage and the thickness of the shell, this ratio was higher for the percentage of shell. For hen eggs, the measurement of the specific gravity method used in commercial poultry farms was adequate to indicate good shell quality in accordance with great correlation with shell thickness. However, the evaluation of shell quality through the specific gravity for quail eggs needs adaptation in the methodology for egg morphology for this species. The parameters of shell quality surveyed: specific gravity, breaking resistance, percentage of shell and thickness of shell in hen eggs showed a positive correlation to a moderate degree (0.54). For quail eggs, the shell percentage shows moderate match (0.60) only with breaking strength and shell thickness.

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Desempenho e qualidade de ovos de galinhas poedeiras criadas em gaiolas enriquecidas e ambiente controlado

Cited by 24 publications

References 17 publications

Use of Protection Screen in Conventional Aviaries (Californian Type) for Laying Hens

Use of Protection Screen in Conventional Aviaries (Californian Type) for Laying Hens

Effect of shed rooftype and babassu pie on the productive characteristics of meat quails

Correlation among the main parameters of eggshell quality analysis of hen and quail eggs

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