Níveis de sódio em dietas para codorna japonesa em pico de postura

Barreto, Sergio Luiz de Toledo; Araújo, Márcio S.; Umigi, Regina Tie; Moura, Weylisson César Oliveira; Costa, Cinthia Cabral da; Sousa, Mariele Freitas

doi:10.1590/s1516-35982007000700014

Cited by 11 publications

(10 citation statements)

References 8 publications

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“…The distribution of absolute deviation (Figure 4) indicates that the fuzzy system realistically estimated the weight of the eggs for the environmental conditions in this work, since the deviations were concentrated below 0.20g (79.49%), which represents 2% of the average weight for Japanese quail eggs that is 10g as reported by Albino and Barreto (2003). The development of the membership functions for the output variables was based on field data collection and on research conducted by Pinto et al (2003), Araujo et al (2007), Barreto et al (2007), Umigi et al (2007), Moura et al (2010a), Moura et al (2010b), and Vercese (2010), Lima et al (2011); who reported information regarding egg weight under six temperatures and four humidity levels, totaling twenty-four thermal conditions.…”

Section: Resultsmentioning

confidence: 99%

“…Quail rearing proves interesting because of the small physical space required, in addition to several inherent characteristics of the animal, such as low feed intake, short breeding interval, early sexual maturity and persistence in high egg production. In addition, the high quality of final product and the easy breeding and management of these birds should be highlighted (BARRETO et al, 2007), as the egg is the main product for commercial exploitation (MOURA et al, 2010b).…”

Section: Introductionmentioning

confidence: 99%

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Estimate of the weight of japanese quail eggs through fuzzy sets theory

et al. 2012

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Quail breeding is a viable alternative for animal production and due to its low investment, fast return of invested capital, use of small areas and creation of jobs has aroused much interest in Brazil. The aim of this study was to develop a model based on fuzzy set theory to predict the weight of eggs from Japanese quails. The proposed fuzzy model was based on data from field measurement experiments, as well as from literature referring to the influence of environment over the weight of eggs. To develop the fuzzy system, air dry-bulb temperature (t db, ° C) and relative air humidity (RH, %) were defined as input variables and trapezoidal and triangular membership functions were used, respectively. The absolute deviation between the values for observed egg weight and egg weight estimated by the fuzzy system, varied between 0.01 g and 0.32 g, and the average deviation was 0.14 g. The average error found was 2.33%, and the determination coefficient (R²) was equal to 0.668. The fuzzy system developed to estimate the weight of Japanese quail eggs, based on the t db and RH provided low values for absolute deviation and percentage error, allows a realistic estimate of the weight of eggs in different environmental conditions.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Estimate of the weight of japanese quail eggs through fuzzy sets theory

et al. 2012

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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. The reproduction strategies of male birds usually involve the rapid production, maturation, and transport of spermatozoa through the genital organs, which is associated with the sperm storage capacity in the genital tract limited to merely one day (Clulow & Jones, 1982).…”

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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“…As melhorias alcançadas para o desempenho produtivo e qualidade interna e externa dos ovos de galinhas poedeiras, são em virtude, dos constantes estudos aplicados em melhoramento genético, portanto, segundo BARReto et al (2007), torna-se necessário balancear de forma adequada os nutrientes da dieta. Entre os nutrientes que demandam pesquisas, os minerais exercem funções importantes no metabolismo, uma vez que os minerais presentes no ovo são em decorrência da concentração no sangue (MACARi e MenDeS, 2005;GoMeS et al, 2013).…”

Section: Introductionunclassified

Níveis de sódio na ração de poedeiras semipesadas após o pico de postura criadas em clima quente

Assunção¹,

Martins²,

Lima³

et al. 2017

Bol. Ind. Anim.

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RESUMO: Objetivou-se com este trabalho estimar a exigência nutricional de sódio (Na) para poedeiras semipesadas criadas em clima quente, após o pico de postura. Foram utilizadas 120 galinhas da linhagem Hisex Brown, com 48 semanas de idade. As aves foram distribuídas em delineamento experimental inteiramente casualizado, com cinco tratamentos, seis repetições e quatro aves por unidade experimental. As rações experimentais foram formuladas a base de milho e farelo de soja e os tratamentos foram constituídos por cinco níveis de sódio (0,12; 0,17; 0,22; 0,27 e 0,32%) derivados do sal comum. Foram avaliados: consumo de ração (g), produção de ovos (%), peso dos ovos (g), massa de ovos (g), conversão alimentar por massa (kg/kg) e por dúzia (kg/dz) de ovos, gravidade específica (g/cm 3 ), espessura de casca (mm), elementos dos ovos, tais como, gema (g e %), albúmen (g e %) e casca (g e %), viabilidade (%) e variação do peso corporal (g) das aves. Não foi verificado efeito (P>0,05) dos níveis de sódio sobre o peso da gema (g) e porcentagem de albúmen. Houve efeito linear (P<0,01) decrescente para o consumo de ração, diminuindo o consumo à medida que aumentou o nível de sódio na ração. Verificou-se efeito quadrático (P<0,01) para a produção de ovos, peso dos ovos, conversão alimentar por massa e dúzia de ovos, pesos de albúmen e casca, gravidade específica, espessura de casca e porcentagem de casca e gema (P<0,05). Os níveis de sódio analisados influenciaram os componentes dos ovos e o desempenho zootécnico das aves acima de 0,27%, negativamente. Recomenda-se a inclusão de 0,20% de sódio na ração de poedeiras semipesadas criadas em clima quente, após o pico de postura, para proporcionar melhor qualidade dos ovos e desempenho produtivo.Palavras-chave: gallus gallus domesticus, poedeiras comerciais, produção de ovos, sal comum. SODIUM LEVELS IN THE DIETS OF SEMI-HEAVY LAYING HENS REARED IN A HOT CLIMATE AFTER PEAK LAYABSTRACT: The objective of this study was to estimate the sodium (Na) requirements of semiheavy laying hens reared in a hot climate after peak lay. A total of 120 Hisex Brown hens, 48 weeks of age, were used. The birds were allocated in a completely randomized design consisting of five treatments, six replicates and four animals per experimental unit. The experimental diets were formulated with corn and soybean meal and the treatments consisted of five levels of sodium (0.12, 0.17, 0.22, 0.27 and 0.32%) derived from common salt. The following parameters were evaluated: feed intake (g), egg production (%), egg weight (g), egg mass (g), feed conversion (kg) per kilogram of eggs and per dozen eggs, specific gravity (g/cm 3 ), shell thickness (mm), egg components including egg yolk (g and %), albumin (g and %) and shell (g and %), viability (%), and variation in body weight (g) of the birds. There was no effect (P>0.05) of sodium levels on egg yolk weight (g) or albumin percentage. A decreasing linear effect (P<0.01) was observed for feed intake, which decreased with increasing sodium level in the diet. A quadra...

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Níveis de sódio em dietas para codorna japonesa em pico de postura

Cited by 11 publications

References 8 publications

Estimate of the weight of japanese quail eggs through fuzzy sets theory

Estimate of the weight of japanese quail eggs through fuzzy sets theory

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

Níveis de sódio na ração de poedeiras semipesadas após o pico de postura criadas em clima quente

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