Níveis de cromo orgânico na dieta de codornas japonesas mantidas em estresse por calor na fase de postura

Araújo, Márcio S.; Barreto, Sergio Luiz de Toledo; Donzele, Juarez Lopes; Oliveira, Rita Flávia Miranda de; Umigi, Regina Tie; Oliveira, Will Pereira de; Balbino, Éric Márcio; Assis, Ana Paula de; Maia, Gustavo Vaz Corrêa

doi:10.1590/s1516-35982007000300010

Cited by 9 publications

(6 citation statements)

References 11 publications

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“…Segundo MaCleod & Dabhuta (1997), as codornas toleram temperaturas mais elevadas que os frangos de corte devido à sua maior superfície corporal em relação à massa, aumentando a dissipação de calor gerado no metabolismo proteico. Araújo et al (2007) observaram, avaliando níveis de cromo orgânico na dieta de codornas mantidas em estresse por calor na fase de postura, que a conversão alimentar por massa de ovos e por dúzia de ovos não foi influenciada (P > 0,05) pela alta temperatura ambiente (32 o C) com umidade relativa do ar de 70%.…”

Section: Resultsunclassified

Efeito da estação do ano sobre o desempenho produtivo de codornas no semiárido paraibano

Guimarães

Furtado²,

Nascimento³

et al. 2014

Rev. bras. eng. agríc. ambient.

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Objetivou-se, com este trabalho, avaliar o efeito das estações chuvosa e seca no desempenho produtivo e na qualidade dos ovos de codorna no semiárido paraibano. Utilizaram-se 2.400 codornas das linhagens japonesa (Coturnix coturnix japonica) e europeia (Coturnix coturnix coturnix), com 60 dias de idade no início e 150 dias ao final. Utilizou-se o delineamento inteiramente casualizado, esquema fatorial 2 x 2 x 3 correspondendo às duas linhagens, duas estações e três meses, com 12 repetições. Mensurou-se a temperatura ambiente, umidade relativa do ar, velocidade do vento, carga térmica radiante e o índice de temperatura de globo negro e umidade, durante 24 h por dia e se avaliaram o consumo de ração, produção de ovos, conversão alimentar por massa e por dúzia de ovos. Para qualificação do ovo foram mensuradas as variáveis: peso do ovo, peso do albúmen, peso da gema, peso da casca e espessura da casca. O desempenho produtivo das aves foi melhor na estação chuvosa quando foram registrados os melhores índices de conforto térmico e as aves da linhagem japonesa foram mais eficientes quanto às características quantitativas dos ovos do que a europeia.

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Section: Resultsunclassified

Efeito da estação do ano sobre o desempenho produtivo de codornas no semiárido paraibano

Guimarães

Furtado²,

Nascimento³

et al. 2014

Rev. bras. eng. agríc. ambient.

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“…The systematic literature review found 41 articles, out of which 24 were selected: Araújo et al (2007), Barreto et al b, 2007Barreto et al c, 2007, Costa et al (2007), Costa et al (2008Costa et al ( a, 2008 Soares et al (2007), and Umigi et al (2007).…”

Section: Resultsmentioning

confidence: 99%

Classification of the coefficients of variation of parameters evaluated in Japanese quail experiments

Leal¹,

Filho

Oliveira

2014

Rev. Bras. Cienc. Avic.

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The objective of this study was to design a classification range of the coefficients of variation (CV) of traits used in experiments with eggtype Japanese quails (Coturnix coturnix japonica). The journal Revista Brasileira de Zootecnia was systematically reviewed, using the key word 'quail' during the period of January, 2000 to 2010. The CV of feed intake (g/bird/d), egg production (%/bird/d), egg weight (g), egg mass (g/bird/d), feed conversion ratio per dozen eggs (g/dozen), feed conversion ratio per egg mass (g/g), and egg specific gravity (g/mL) were collected. For each parameter, CV were classified using the following median (MD) and pseudo-sigma (PS) ratio as follows: low (CV ≤ MD -PS), medium (MD -PS < CV ≤ MD + PS), high (MD + PS < CV ≤ MD + 2PS) and very high (CV > MD + 2PS). According to the results, it was concluded that each parameter has a specific classification range that should be taken into account when evaluating experimental precision.

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“…The most studied aspect of quail production is nutrition, particularly of Japanese egg-type quails (Garcia et al, 2000;Ribeiro et al, 2003;Murakami et al, 2006;Araujo et al, 2007;Murakami et al, 2007). On the hand, there are few studies on the egg production potential of European meat-type quails (Mori et al, 2005;Barreto et al, 2007b), and therefore, on their reproduction capacity.…”

Section: Introductionmentioning

confidence: 99%

Production and reproduction of egg- and meat-type quails reared in different group sizes

Santos

Murakami

Fanhani

et al. 2011

Rev. Bras. Cienc. Avic.

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Egg- and meat-type quails were reared in groups of different sizes with a fixed female-to-male ratio of 2 to 1 and an area of 158 cm² per bird. The aim was to investigate the influence of group size on quail production and reproductive variables. To this end, 360 quails (180 meat and 180 egg-type quails) were assigned in a completely randomized experimental design to one of three treatments with ten replicates each. The treatments consisted of groups with nine, six, or three quails per cage. Birds were observed for three cycles of 14 days. Daily feed intake and feed conversion ratio were influenced (p < 0.05) by group size in both types of quails. Quail type influenced (p < 0.05) daily feed intake, feed conversion, and egg weight due to the typical differences between meat and egg-type birds. Despite the observed differences in production parameters, the mean values observed were typical of meat- and egg-type quails. The number of hydrolysis points (holes) per mm² on the vitelline membrane on the germinal disc area was higher in meat quails (2.89 ± 0.21) than in egg quails (2.15 ± 0.13). This parameter was not influenced by the number of birds per cage, which suggests that the number of males inside the cage did not modify the spermatozoa pool inside the female oviduct. We concluded that a ratio of two females per male in cages with three, six, and nine birds/cage is recommended, as no deleterious effect on quail reproduction was observed

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Níveis de cromo orgânico na dieta de codornas japonesas mantidas em estresse por calor na fase de postura

Cited by 9 publications

References 11 publications

Efeito da estação do ano sobre o desempenho produtivo de codornas no semiárido paraibano

Efeito da estação do ano sobre o desempenho produtivo de codornas no semiárido paraibano

Classification of the coefficients of variation of parameters evaluated in Japanese quail experiments

Production and reproduction of egg- and meat-type quails reared in different group sizes

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