Desempenho e qualidade dos ovos de codornas de quatro grupos genéticos

Móri, Cleusa; Garcia, Edivaldo Antônio; Pavan, Ana Claudia Lemes; Piccinin, Adriana; Scherer, Miriani Rosa; Pizzolante, Carla Cachoni

doi:10.1590/s1516-35982005000300018

Cited by 28 publications

(25 citation statements)

References 11 publications

(5 reference statements)

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“…Santos et al (2011), studying broiler breeders, obtained significant improvement in egg production after adding electrolytes in the feed. The mean egg production (81.53%) is consistent with the mean for quail production in Brazil, similar to the values reported by Móri et al (2005), 82.27%, and Guimarães et al (2014), who observed higher production values, with lower consumption of nutrients, in the comparison between Japanese and European strains, in two seasons of the year.…”

Section: Resultssupporting

confidence: 90%

Thermal comfort index, physiological variables and performance of quails fed with protein reduction

Rodrigues

Furtado

Costa

et al. 2016

Rev. bras. eng. agríc. ambient.

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A B S T R A C TThe objective of this study was to determine the effects of environment and electrolyte balance on environmental, physiological and productive indices of Japanese quails. For the experiment, 288 quails were distributed in a randomized block design with six treatments and six replicates of eight birds per experimental unit. The treatments consisted of one basal feed with 20.0% of crude protein (CP) and the others with a reduction of 3.0% CP to achieve six electrolyte balance levels (166.54; 153.47; 139.63; 139.63; 117.13 and 166.49). As to the environment, there was an increase in air temperature and temperature-humidity index at the hottest hours of the day, causing discomfort to the birds, which increased respiratory rate, but with the maintenance of homeothermy. Differences were observed in feed consumption, water consumption, production, weight of eggs and mass of eggs, due to the electrolyte levels in the feed. For feed conversion, both per mass and per dozen of eggs, there was no statistical difference. The electrolyte balance and environmental indices at the hottest hours of the day did not affect quail production.Índice de conforto térmico, variáveis fisiológicas e desempenho de codornas alimentadas com redução proteica R E S U M O Objetivou-se, neste trabalho, determinar o efeito do ambiente e do balanço eletrolítico sobre os índices ambientais, fisiológicos e produtivos de codornas japonesas. Utilizaram-se 288 aves distribuídas no delineamento em blocos casualizados com seis tratamentos e seis repetições de oito aves por unidade experimental. Os tratamentos consistiram em uma ração basal com nível de 20,0% PB e os demais com redução de 3,0% PB, para alcançar seis níveis de balanço eletrolítico (166,54; 153,47; 139,63; 139,63; 117,13 e 166,49). Quanto ao ambiente, verificou-se uma elevação na temperatura do ar e no índice de temperatura e umidade nos horários mais quentes do dia, causando desconforto às aves, que elevaram a frequência respiratória, porém com a manutenção da homeotermia. Foram observadas diferenças no consumo de ração, consumo de água, produção, peso e massa de ovo, em razão dos níveis eletrolíticos da ração. Quanto à conversão alimentar tanto por massa quanto por dúzia de ovos, não foi observada diferença estatística. O balanço eletrolítico e os índices ambientais nos horários mais quentes do dia não interferiram na produção das aves.

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Section: Resultssupporting

confidence: 90%

Thermal comfort index, physiological variables and performance of quails fed with protein reduction

Rodrigues

Furtado

Costa

et al. 2016

Rev. bras. eng. agríc. ambient.

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“…The highest Haugh unit was observed in the eggs from young quails (85 days), according to egg weight, which was influenced by age. Móri et al (2005b) used four strains of quails and analyzed egg production, egg weight and average feed intake. The authors found no differences (p > 0.05) among the groups within 42 to 210 days of age for the average feed intake and egg production, and the values for egg production ranged from 80 to 84.49% in this period.…”

Section: Influence Of European Quail Breeders Age On Egg Quality Incmentioning

confidence: 99%

Influence of european quail breeders age on egg quality, incubation, fertility and progeny performance

Santos

Murakami

Oliveira

et al. 2015

Rev. Bras. Cienc. Avic.

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The influence of age (85, 140, and 270 days) of European quails breeders on the egg quality and hatching, fertility and progeny performance was evaluated. The experimental design was completely randomized in a 3x3 factorial arrangement (females' age x males' age), with ten replicates and six birds per experimental unit (four females and two males). Egg production and quality were determined during 3 periods of 14 days and incubation parameters were evaluated in eggs obtained in five consecutive days. The live performance of the progenies was analyzed until 35 days. There was no effect of male age or any interaction between the age of males and females for the evaluated variable. The female's age influenced egg production, egg weight and chick weight, with better results obtained for 140-d-old breeders. The age of females reduced the hatchability, increased the late mortality in incubated eggs, and had no effect on fertility, total embryo mortality or eggshell structure, when analyzed by electron microscopy. The number of sperm trapped in the outer perivitelline layer (sptz/mm²) was determined in 10 fertile eggs per experimental unit. Young females fertilized by young males (80 days) had reduced sptz/mm². Progeny live performance was not affected by breeder's age. Breeders with 270 days retain fertility; however, their egg production, weight and hatchability of fertilized eggs is reduced. In conclusion, European quail breeders with 140 days of age have better egg quality, hatching and breeding results.

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“…Diferenças significativas (P>0,05) para peso e percentagem de gema também não foram encontrados por Costa et al (2004), ao avaliarem dietas com níveis de 2.700, 2.800 e 2.900 kcal de EM/kg e 17,5% de PB em galinhas poedeiras. Móri et al (2005) avaliaram a qualidade do ovo de quatro grupos genéticos de codornas europeias alimentadas com a mesma dieta contendo 2.900 kcal de EM/kg e 20% de PB. Não houve influência (P>0,05) do grupo genético com relação ao peso e percentagem de gema.…”

Section: Resultsunclassified

Efeito da redução da densidade energética de dietas sobre as características do ovo de codorna japonesa

2010

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RESUMO -Objetivou-se avaliar os efeitos da redução da densidade energética da dieta sobre a qualidade de ovo de codornas japonesas, mantendo a mesma relação energia metabolizável (EM):nutrientes. Foram utilizadas 400 codornas japonesas dos 76 aos 160 dias de idade, distribuídas em delineamento inteiramente casualizado, com cinco tratamentos, 10 repetições e 8 aves por unidade experimental. Utilizaram-se cinco dietas com densidades energéticas distintas (2.900, 2.800, 2.700, 2.600 e 2.500 kcal de EM/kg), mantendo constante a relação entre energia metabolizável e nutrientes da dieta, que continha 2.900 kcal de EM/kg. As aves foram arraçoadas à vontade durante todo o período experimental. Houve diferença significativa apenas no consumo de ração e peso no específico de ovo. Para consumo de EM, PB e aminoácidos, peso do ovo, massa do ovo, peso da gema, porcentagem da gema, peso do albúmen, porcentagem do albúmen, peso da casca, porcentagem da casca, diâmetro do ovo e altura do ovo, não foram encontradas diferença significativas entre as dietas.Recomenda-se utilizar dietas com 2.800 e 2.900 kcal de EM/kg, mantendo a mesma relação EM:nutrientes da dieta, quando o objetivo for qualidade de ovo.Palavras-chave: coturnicultura, Coturnix coturnix japonica, energia metabolizável, nutrição de codornas, nutrientes Effect of energetic density reduction of diets on characteristics of Japanese quail eggsABSTRACT -The aim of this study was to evaluate the effects of reduction of energetic density of the diet on the quality of Japanese quail eggs, keeping the same metabolizable energy (ME):nutrients relationship. It was used 400Japanese quails from 76 to 160 days of age, distributed in a complete random design, with five treatments, 10 replicates and 8 birds per experimental unity. It was used five diets with different energetic densities (2,900; 2,800; 2,700; 2,600;and 2,500 kcal ME/kg), keeping constant the relationship between metabolizable energy and nutrients of the diet, which had 2,900 kcal ME/kg. Diet was fed ad libitum during all the experimental period. There was a significant difference only on the ration intake and on the egg specific weight. It was not observed significant difference among diets for the following parameters: metabolizable energy intake, crude protein and amino acids, egg weight, egg mass, yolk weight, yolk percentage, albumen height, albumen percentage, shell weight, shell percentage, egg diameters and egg height. Diets with 2,800 and 2,900 kcal ME/kg, by keeping constant metabolizable energy:nutrients ratio, provide the same egg quality. IntroduçãoO ovo de codorna é considerado uma ótima alternativa para a alimentação humana, pois apresenta, na sua composição, uma proteína de alto valor biológico, elevado índice de digestibilidade (Albino & Barreto, 2003), além de vitaminas e minerais (Murakami et al., 1994).Para que todo esse potencial nutritivo seja utilizado pelo homem, a produção de ovos tem que remunerar satisfatoriamente o produtor e, ao mesmo tempo, beneficiar economicamente o consumidor. Dest...

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Desempenho e qualidade dos ovos de codornas de quatro grupos genéticos

Cited by 28 publications

References 11 publications

Thermal comfort index, physiological variables and performance of quails fed with protein reduction

Thermal comfort index, physiological variables and performance of quails fed with protein reduction

Influence of european quail breeders age on egg quality, incubation, fertility and progeny performance

Efeito da redução da densidade energética de dietas sobre as características do ovo de codorna japonesa

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