Microbial contamination of artificially incubated Greater Rhea (<i>Rhea americana</i>) eggs

Lábaque, María Carla; Navarro, Joaquín L.; Martella, Mónica B.

doi:10.1080/00071660310005198319

Cited by 15 publications

(5 citation statements)

References 4 publications

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“…The slight delay of the date of laying onset (9 d) in the Aliba® group with respect to the control group might be attributed to the change in the food type made one month before the date of the laying onset reported in the literature (Lábaque et al, 2003(Lábaque et al, , 2004(Lábaque et al, , 2010Martella and Navarro, 2006). Hence, these individuals might have gone through a period of neophobia to the novel food (Marples and Kelly, 1999).…”

Section: Discussionmentioning

confidence: 75%

The influence of diet composition on egg and chick traits in captive Greater Rhea females

Lábaque

Martella²,

Maestri

et al. 2013

British Poultry Science

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1. This study was conducted to evaluate the influence of diet composition on egg number, physical and chemical characteristics of eggs and weight and survival of chicks throughout a breeding season in a captive-bred population of greater rheas (Rhea americana). 2. From August to December, individuals were offered two diets: processed feed for rheas and processed feed for chicken (which is the feed most commonly offered to farmed rheas in Argentina). Reproductive performance of 15 females was monitored and female body weight was recorded before egg-laying onset. Within each experimental group, the following variables were determined: egg morphometric variables and percentage of components, fatty acid composition, hatching success and initial weight of chicks and mortality during the first week of life. 3. Females that were fed on processed feed for rheas delayed onset of laying and reduced laying period and number of eggs produced. However, females of this group laid larger eggs, with higher percentages of yolk and yolk lipids, and exhibited higher hatching success and chick weight compared with those that received chicken diet. Survivorship of chicks in their first week of life was not affected by composition of the diet offered to parental female. 4. Some reproductive parameters of captive greater rhea females fed on processed feed for rheas were higher than those of individuals receiving processed feed for chicken.

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Section: Discussionmentioning

confidence: 75%

The influence of diet composition on egg and chick traits in captive Greater Rhea females

Lábaque

Martella²,

Maestri

et al. 2013

British Poultry Science

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“…Studies carried out so far have focused mainly on bacteria, primarily of the genus Salmonella (BRUCE & DRYSDALE 1983;CASON et al 1994;COX et al 2000;GAST et al 2005;KIZERWETTER-OEWIDA & BINEK 2008). However, only a few studies have investigated the contamination of hatching bird eggs with microscopic fungi and their impact on embryogenesis (LÁBAQUE et al 2003;GIGLI et al 2009;NOWA-CZEWSKI et al 2011). It was shown that the consequence of the presence of microscopic fungi in the egg is embryo mycosis.…”

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confidence: 99%

Microbiological Response of Japanese Quail Eggs to Disinfection and Location in the Setter During Incubation

Nowaczewski¹,

Szablewski²,

Cegielska‐Radziejewska³

et al. 2013

folia biol (krakow)

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The aim of this study was to evaluate the effectiveness of ethyl alcohol (75%) disinfection of Japanese quail (Coturnix coturnix japonica) hatching eggs and analysis of microbial contamination of eggs during incubation, depending on their location in the setter. Disinfected eggshells were found to have lower total bacteria (TBC) and fungi (TFC) count. Concerning the vertical location of eggs (top, middle, bottom), disinfected eggs were characterized by similar values of the TBC (x = 1.54 log CFU/shell surface). For eggs without disinfection, it was found that those from middle and bottom levels of the setter had similar and lower TBC (by about 1.22 log CFU/shell surface) as compared to eggs from the top level. No statistically significant differences between levels were found in the case of TFC. Hatch breakouts (dead-in-shell embryos) from non-disinfected eggs were characterized by higher TBC (on average 0.37 log CFU/g). Disinfected eggs, located at the middle and bottom levels of the incubator, had similar and lower TBC in comparison with eggs from the top level. There were no microscopic fungi inside disinfected eggs of hatch breakouts. On the other hand, the non-disinfected eggs, placed on trays from the middle level of the incubator, had greater TFC (by about 0.9 log CFU/g) than those from top and bottom levels. Regardless of whether the eggs were disinfected or not, the largest group of microscopic fungi included Aspergillus and Penicillium.

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“…and Cryptococcus spp. have been identified in the normal microbiota of the oropharynges and cloacae of ostriches (Cooper et al, 2009;Lábaque et al, 2003;Evans et al, 2004). While attempting to isolate filamentous fungi from the oropharynges and feces of ostriches obtained negative results; however, possible cases of pulmonary infection by these agents should be considered because their lower respiratory tracts are particularly affected by the inhalation of propagules present in the environment.…”

Section: Discussionmentioning

confidence: 99%

Outbreak due to Fusarium solani on a Brazilian ostrich farm

Bentubo

Silva

Mangiaterra³

et al. 2022

RSD

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The aim of this study was to present and discuss the laboratory finding of Fusarium solani as opportunistic agent of invasive mycosis in chicks and eggs on an ostrich farm located in Cosmópolis (São Paulo, Brazil). Dyspnea and tachypnea were the main signs and symptoms presented by the chicks. Multiple whitish foci were found scattered over the chicks’ air sac membranes, lungs and livers and over the external membranes of the eggs. Fungal mycelia were observed in the air compartments of some of the eggs. An isolate purified from a lung culture was subsequently identified as Fusarium solani based on its morphological and molecular profiles. It was likely that the high humidity and temperature, as well as the matte paint that had been applied to the hatchery and birth room walls, provided conditions favoring fungal growth. Strict environmental sanitary measures are necessary to maintain microbial control. Uncommon fungi such as Fusarium solani must be considered as opportunistic pathogens in commercial ostrich culturing.

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Microbial contamination of artificially incubated Greater Rhea (Rhea americana) eggs

Cited by 15 publications

References 4 publications

The influence of diet composition on egg and chick traits in captive Greater Rhea females

The influence of diet composition on egg and chick traits in captive Greater Rhea females

Microbiological Response of Japanese Quail Eggs to Disinfection and Location in the Setter During Incubation

Outbreak due to Fusarium solani on a Brazilian ostrich farm

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