The effect of litter materials on broiler performance: a systematic review and meta-analysis

Toledo, Taiani dos Santos de; Pich, Cloé Schiavon; Roll, Aline Arassiana Piccini; Prá, Marcos Antonio Dai; Leite, Felipe; Xavier, Eduardo Gonçalves; Roll, Victor Fernando Büttow

doi:10.1080/00071668.2019.1639143

Cited by 14 publications

(18 citation statements)

References 42 publications

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“…Broiler bedding has the property of reducing temperature variation, thus serving as a thermal insulator (Toledo et al, 2019). This experiment ratified this situation since there was no difference between materials regarding the surface temperature of the bedding TA B L E 6 Feed intake (FI) (g), weight gain (WG) (g), feed conversion (FC) (g/g), and viability (VB) (%) from 1 to 7, 1 to 21, and 1 to 42 days of broilers bred in shavings and rice husks with different inclusions of dehydrated grass in most of the breeding period.…”

Section: Discussionmentioning

confidence: 99%

“…The bedding where broiler are kept throughout the breeding period is an important component of breeding environment, as chickens spend more than 80% of their time lying on the bedding (Weeks et al., 2000). The substrate used as a bedding has the main function of preventing direct contact of birds with the floor, reducing temperature variations, and absorbing water, excreta, food, and feathers (Toledo et al., 2019).…”

Section: Introductionmentioning

confidence: 99%

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Characterization of different types of broiler bedding including dehydrated grass and their influence on production

Przybulinski

Garcia

Burbarelli

et al. 2021

Animal Science Journal

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The objective is to evaluate different bedding materials, including dehydrated grass, on performance and carcass yield and verify the physicochemical and microbiological characteristics of materials. The completely randomized experiment comprised 1,080 chicks in a 3 × 2 factorial design with three levels of dehydrated grass (0%, 25%, and 50%) and two bedding materials (rice husks and shavings). Total microorganism count and physicochemical characteristics, surface temperature of birds, and performance of birds were analyzed up to 42 days of age, when birds were slaughtered, and carcass yield was evaluated. The inclusion of grass showed a higher microbiological count after 1 day, stabilizing with materials after 28 days. The inclusion of 50% of dehydrated grass resulted in a higher surface bed temperature at 42 days. Inclusions above 25% of grass have a lower density and a greater water retention capacity, pH, moisture, and total nitrogen, in addition to a lower FDA in its structure. The highest ammonia emissions occurred with the inclusion of 25% of grass. The inclusion of dehydrated grass did not affect performance and carcass yield, favoring feed conversion at the initial stages. The inclusion of grass can replace up to 25% of shavings without harming physicochemical parameters of materials and birds' performance.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Characterization of different types of broiler bedding including dehydrated grass and their influence on production

Przybulinski

Garcia

Burbarelli

et al. 2021

Animal Science Journal

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“…The meta-analysis methods presented in this study have already been described and published by other authors [4,5,6,7]…”

Section: Methodsmentioning

confidence: 99%

An assessment of the impacts of litter treatments on the litter quality and broiler performance: A systematic review and meta-analysis

et al. 2020

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The choice of the most suitable litter treatment should be based on scientific evidence. This systematic review assessed the effectiveness of litter treatments on ammonia concentration, pH, moisture and pathogenic microbiota of the litter and their effects on body weight, feed intake, feed conversion and mortality of broilers. Methods The systematic literature search was conducted using PubMed (Medline), Google Scholar, ScienceDirect and Scielo databases to retrieve articles published from January 1998 to august 2019. Means, standard deviations and sample sizes were extracted from each study. The response variables were analyzed using the mean difference (MD) or standardized mean difference (SMD), (litter treatment minus control group). All variables were analyzed using random effects meta-analyses. Results Subgroup meta-analysis revealed that acidifiers reduce pH (P<0.001), moisture (P = 0.002) ammonia (P = 0.011) and pathogenic microbiota (P <0.001) of the litter and improves the weight gain (P = 0.019) and decreases the mortality rate of broilers (P<0.001) when compared with controls. Gypsum had a positive effect on ammonia reduction (P = 0.012) and improved feed conversion (P = 0.023). Alkalizing agents raise the pH (P = 0.035), worsen feed conversion (P<0.001), increase the mortality rate (P <0.001), decrease the moisture content (P<0.001) and reduce the pathogenic microbiota of the litter (P<0.001) once compared to controls. Superphosphate and adsorbents reduce, respectively, pH (P<0.001) and moisture (P = 0.007) of the litter compared to control groups.

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“…In regions where poultry production is carried out, waste materials emerging from agricultural production that are inexpensively available and have low moisture content are most commonly used. There is a body of research about the effect on bedding materials depending on absorption characteristics and pH levels on broiler performance, carcass characteristics, and inner-environmental conditions of broiler houses (Mutaf et al, 1977;Poyraz et al, 1990;Lien et al, 1998;Toledo et al, 2019). Litter quality has a significant effect on broiler growth and quality of carcass.…”

Section: Turkish Journal Of Agricultural and Natural Sciencesmentioning

confidence: 99%

Applicability of Cotton Gin Waste as Litter Material in Broiler Production

Balaban

Rathert

2020

Türk Tarım Ve Doğa Bilimleri Dergisi

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This study examined the applicability of gin waste for litter use in broiler production. 630 day-old Ross 308 hybrid birds were used in three treatment groups with three replications kept on commonly used wood shavings (L1), on gin waste (L2) and on a combination of 50% wood shavings and 50% gin waste (L3). During the 42-day experiment, changes in live weight, feed intake, feed conversion rate, vitality, carcass characteristics (weight, yield, gizzard, liver and heart weight), moisture content and enumeration of Eschericia coli in the bedding materials were examined. The study revealed that the effect of litter materials was significant on live weight and carcass weight (P<0.05). The best results regarding live weight and carcass weight (2177.93 g and 1643.10 g) were gained in L2, followed by L1 (2173.27 g and 1622.70 g), and L3 (2086.23 g and 1544.70 g). No statistically significant differences were found for liver, heart and gizzard. The differences in feed consumption and feed conversion ratio were statistically not significant. No statistically significant differences were found for vitality. At study end, moisture content was statistically different in L2. In L1 and L3, E coli colonization was determined, while it was not observed in L2. As a result, it can be concluded that gin waste is an alternative litter material to be used in broiler breeding.

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The effect of litter materials on broiler performance: a systematic review and meta-analysis

Cited by 14 publications

References 42 publications

Characterization of different types of broiler bedding including dehydrated grass and their influence on production

Characterization of different types of broiler bedding including dehydrated grass and their influence on production

An assessment of the impacts of litter treatments on the litter quality and broiler performance: A systematic review and meta-analysis

Applicability of Cotton Gin Waste as Litter Material in Broiler Production

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