Poultry rearing on perforated plastic floors and the effect on air quality, growth performance, and carcass injuries—Experiment 1: Thermal Comfort

Almeida, Eduardo Alves de; Sant’Anna, Aline Cristina; Bahiense, Raphael Nogueira; Macari, Marcos; Furlan, Renato Luís

doi:10.3382/ps/pex131

Cited by 30 publications

(39 citation statements)

References 25 publications

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“…This could be explained by the direct dropping of duck feces in NRS, which makes ducks less opportunity to contact with their excreta. Wang et al [44] and Almeida et al [8] reported that FRS had higher microbial contamination and higher concentrations of NH 3 and CO 2 in the air than NRS, hence the better air quality in NRS also helped reduce the burden on duck immune system.…”

Section: Discussionmentioning

confidence: 99%

“…Though CRS makes full use of the breeding house space, ducks were vulnerable as individual activities are much constrained [1]. Whereas, FRS is usually to lay a thick pad of 5-10 cm by straw, sawdust or wood shavings on a cement oor [6][7][8], which could absorb excess moisture but has defects in rearing management. Plastic oor net-rearing and wire oor net-rearing are national wide applied NRS.…”

Section: Introductionmentioning

confidence: 99%

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Changes in production performance, antioxidant capacity and immune status of meat ducks under different rearing systems

Guo¹,

Wang²,

Z³

et al. 2020

Preprint

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Background As potential substitutes of traditional free-range rearing, floor rearing system (FRS) and net rearing system (NRS) are currently predominant dryland rearing systems. In this study, a total of 720 Nonghua ducks were assigned to a 2 × 3 factorial arrangement with two rearing systems (FRS and NRS) and three ages (4w, 8w, and 13w) to study the effects of FRS and NRS on production performance, antioxidant capacity and immune status. Results The production performance was mainly affected at 8w. Body weight, average daily gain, eviscerated weight and semi-eviscerated weight were higher in NRS at 8w, but carcass yield was decreased at 8w and 13w (P < 0.05). Lipid deposition was enhanced in NRS with higher sebum and abdominal fat yield at 8w and 13w (P < 0.05). NRS resulted in the liver developmental retardation at 4w and decreased gizzard index at all ages (P < 0.05). Antioxidant capacity was not affected by rearing systems (P > 0.05), but a tendency of better antioxidant capacity in NRS at 4w was found, while glutathione peroxidase (GSH-Px) activity was higher in NRS at 13w (P < 0.05). Spleen and thymus were promoted in NRS and immune cytokines were extensively affected by rearing system (P < 0.05), exhibiting general higher profiles of IFN-γ, IL-1β, IL-4, immunoglobulins in NRS. Serum biochemical parameters (AST, ALT, and ALP) indicated NRS was better for liver health, and in liver, ALP was higher in FRS at 13w, while ALP and IFN-γ in 13w-FRS were both higher than 4w-FRS and 8w-FRS (P < 0.05). Conclusions Compared with FRS, NRS was conducive to production performance and duck liver health to some extent but it had defects in visceral organ development and lipid deposition. Though antioxidant capacity was not significantly affected, NRS ducks might have better antioxidant capacity at the early stage of breeding, while GSH-Px activity was increased for scavenging excess free radicals at the later one. NRS increased the levels of IFN-γ, IL-1β, IL-4, immunoglobulins in serum and promoted the development of thymus and spleen to improve duck immune function. These results revealed the physiological impacts of FRS and NRS on ducks and provided a reliable reference for rearing system selection.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Changes in production performance, antioxidant capacity and immune status of meat ducks under different rearing systems

Guo¹,

Wang²,

Z³

et al. 2020

Preprint

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“…Almeida ve ark. 8 derin altlık ve plastik ızgara üzerinde yetiştirilen hızlı gelişen genotiplerin kullanıldığı bir çalışmada, derin altlık zeminde yetiştirilen erkek ve dişi hayvanlarda yemden yararlanma oranını sırası ile 1,63 ve 1,72; plastik ızgaralı zeminde erkeklerde 1,64; dişilerde 1,71 bulmuşlar ve yemden yararlanma için zemin sistemleri arasındaki farkın önemsiz olduğunu bildirmişlerdir. Mikulski ve ark.…”

Section: Tartışma Ve Sonuçunclassified

“…Almeida ve ark. 8 odun talaşı kullanılan derin altlık zemin ile plastik ızgaralı zeminin etlik piliçlerin büyüme performansına etkilerini incelediği çalışmada 42 günlük büyütme dönemi sonunda derin altlık sistemde yetiştirilen hayvanlardan erkeklerin canlı ağırlıklarının 3111 gr, dişilerin ise 2708 gr, plastik zemin üzerinde yetiştirilen erkek hayvanların 3167, dişi olanların 2760 gr canlı ağırlığa ulaştıklarını bildirmişler ve gruplar arası farklılıkları önemli bulmuşlardır. Yine aynı çalışmada, derin altlık zeminde yetiştirilen hayvanların yem tüketimleri erkeklerde 5082 gr, dişilerde 4665 gr, yemden yararlanma oranının erkeklerde 1,63; dişilerde 1,72; ölüm olanlarını erkeklerde %5,96; dişilerde %1,08 olarak bulunmuştur.…”

Section: Introductionunclassified

Effects of Slatted Floor and Slow Growing Broilers on Growth Performance and Production Economics

Çavuşoğlu¹,

Petek²

2018

Uludağ Üniversitesi Veteriner Fakültesi Dergisi

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The aim of this study was to evaluate the effects of g e notype an d flo or typ e on broiler growth per formance and p ro duction eco nomics. In the study, slow-growing (Hubbard JA57) and fast-growing (Ross 308) broilers with slatted floor and deep litter were used, so there were four main groups (2x2), and each main group consisted of 5 replicates. Each replicate consisted of 10 male chicks, so 200 birds were used in total. The experiment lasted for 8 weeks. Live weight gain, feed consumption, and dead birds were recorded throughout the experiment. Variable costs of each group and its percentages within total costs were calculated, gross profit and profitability were calculated to analyze economic performance. As expected, the growth performance of fast-growing broiler was found to be better than slower-growings, and the effect of floor type on growth performance was found to be insignificant. In general, slow-growing genotypes were found to be better in terms of economic benefit. As a result of this study, even though fast-growing broilers had a better production performance, slowergrowing broilers had a better economic performance at the end of the experiment. However, considering that the slaughter ages of slowand fast-growing birds are different in commercial conditions, it would be more beneficial to make an economic comparison with the total production in the same unit in one year.

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“…However, environmental conditions, human population density, and land availability limit the use of organic or FR farming systems (20). Confined systems such as caged rearing are still used in broiler production (9).…”

Section: Introductionmentioning

confidence: 99%

Effects of genotype and housing system on some bone biomechanical characteristics in broiler chickens

Suzer¹,

Tüfekçi²,

Arican³

et al. 2019

Ankara Üniversitesi Veteriner Fakültesi Dergisi

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The aim of this study was to determine the effects of two genotypes (slow-growing and fast-growing) and three housing systems (deep litter, plastic slat and free-range) on some bone biomechanical properties of broiler chickens and to evaluate the interaction between genotype and housing systems. Broilers from two genotypes were reared at three different housing conditions. Fifteen bones were randomly selected from each housing system in both slow-growing and fast-growing groups, and the experiment was performed on 90 bones in total. To determine bone characteristic and biomechanical traits of tibiotarsi, bones collected from right leg and then weighed, cortical area measurements and three-point bending tests were applied. Both live body weight and carcass weight were significantly affected by genotype and housing systems. There was no interaction between genotype and housing system in terms of bone weight, cortical area, breaking strength, bending strength, and deflection. Also, housing systems had no statistical effect on these parameters. Fast-growing broilers were significantly had heavier tibiotarsi, larger cortical area and higher breaking strength than slow-growing broilers, while bending strength was significantly lower in fast-growing broilers. Deflection was not affected by genotype or by housing system. In conclusion, bone geometry and biomechanical properties were not affected by housing systems but by genotype. Fast-growing broilers had better bone morphology and stronger bones than slow-growing genotype. Therefore, fast-growing genotype can provide positive effects on bone growth and mechanical properties in broilers.

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Poultry rearing on perforated plastic floors and the effect on air quality, growth performance, and carcass injuries—Experiment 1: Thermal Comfort

Cited by 30 publications

References 25 publications

Changes in production performance, antioxidant capacity and immune status of meat ducks under different rearing systems

Changes in production performance, antioxidant capacity and immune status of meat ducks under different rearing systems

Effects of Slatted Floor and Slow Growing Broilers on Growth Performance and Production Economics

Effects of genotype and housing system on some bone biomechanical characteristics in broiler chickens

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