Efeito da idade da matriz sobre o rendimento e qualidade da carne de frangos de corte

Dalanezi, J. A.; Mendes, Ariel Antônio; Garcia, Edivaldo Antônio; Garcia, Rodrigo Garófallo; Moreira, Joerley; Takita, Tânia Sayuri; Paz, Ibiara Correia de Lima Almeida

doi:10.1590/s0101-20612004000400035

Cited by 5 publications

(5 citation statements)

References 8 publications

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“…Young breeders tend to produce lighter eggs, and consequently, lighter day-old chicks (Dalanezi et al, 2004); however, egg with the same weight can be produced by breeders of different ages as well breeders of the same age can produce eggs with different weights. Some studies showed that chick weight is independent of breeder age and it is only influenced by egg weight (Pinchasov, 1991).…”

Section: Introductionmentioning

confidence: 99%

What determines hatchling weight: breeder age or incubated egg weight?

Traldi¹,

Menten²,

Silva³

et al. 2011

Rev. Bras. Cienc. Avic.

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Two experiments were carried out to determine which factor influences weight at hatch of broiler chicks: breeder age or incubated egg weight. In Experiment 1, 2340 eggs produced by 29-and 55-weekold Ross ® broiler breeders were incubated. The eggs selected for incubation weighed one standard deviation below and above average egg weight. In Experiment 2, 2160 eggs weighing 62 g produced by breeders of both ages were incubated. In both experiments, 50 additional eggs within the weight interval determined for each breeder age were weighed, broken, and their components were separated and weighed. At hatch, hatchlings were sexed and weighed, determining the average initial weight of the progeny of each breeder age. Data were analyzed using the Analyst program of SAS ® software package. In Experiment 1, the weight difference between eggs produced by young and mature breeders was 10.92 g, and the component that mostly influenced this difference was the yolk (7.51 g heavier in mature breeders, compared with 4.23 g difference in albumen and 0.8 g in eggshell weights). Hatchling weight difference was 9.4 g higher in eggs from mature breeders. In Experiment 2, egg weight difference was only 0.74 g, but yolk weight was 4.59 g higher in the eggs of mature breeders. The results obtained in the present study indicate that hatchling weight is influenced by egg weight, and not by breeder age. INTRODUCTIONA chicken egg generally consists of 58.5% albumen, 31% yolk, and 10.5% shell, but this composition varies according to genetic strain and breeder age (Vieira & Moran, 1999).Chick weight at hatch is directly related to egg weight, corresponding to 62 to 76% of egg weight. This correlation between increases after the 11th day of incubation and may remain the same during the entire rearing period (Wilson, 1991).Breeder age strongly influences egg weight, as well as egg quality and composition. Young breeders tend to produce lighter eggs, and consequently, lighter day-old chicks (Dalanezi et al., 2004); however, egg with the same weight can be produced by breeders of different ages as well breeders of the same age can produce eggs with different weights. Some studies showed that chick weight is independent of breeder age and it is only influenced by egg weight (Pinchasov, 1991).Egg weight increases with breeder age due to the increase in yolk size, whereas the variation in the weight of the eggs produced by breeders of the same age results from an increase in albumen proportion (Lima et al., 2001). It must be mentioned that eggs with the same weight, independently of breeder age, produce day-old chicks with the same weight and quality. Mail Adress

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Section: Introductionmentioning

confidence: 99%

What determines hatchling weight: breeder age or incubated egg weight?

Traldi¹,

Menten²,

Silva³

et al. 2011

Rev. Bras. Cienc. Avic.

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“…The correlation between weights of eggs and hatched chicks strengthens on th day after eggs are incubated and sustains during the rest of incubation period until the eggs are hatched (Wilson, 1991). Older hens tend to lay heavier eggs, and consequently hatch heavier chicks (Dalanezi et al, 2004).…”

Section: Effect Of Housing System On Total Egg Lay Its Hatchability and Quality Of Chicks It Hatchedmentioning

confidence: 96%

“…Mature breeders lay heavier eggs than younger flocks (Dalanezi et al, 2004) but eggs of similar weights can often be laid by hens of different ages. Similarly, hens of similar ages may lay eggs having different weights.…”

Section: Effect Of Housing On Egg Quality Traitsmentioning

confidence: 99%

“…Male chicks weighed more than female chicks. Older hens tend to lay heavier eggs, and consequently hatch heavier chicks (Dalanezi et al, 2004). Studies have shown that it is the weight of the egg that determines the weight of the chick and that flock age has minimal influence on chicks" quality parameters (Pinchasov, 1991).…”

Section: Effect Of Housing On Egg Quality Traitsmentioning

confidence: 99%

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Production performance of broiler breeders under cage versus floor housing systems

2018

Int. J. Biosci.

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Research trials were conducted at commercial farms (n=20,000) to evaluate the production performance of meat-type floored and cage housed Hubbard breeder flocks during 1 st egg lay cycle under controlled environment. Hens (n=20,000) were divided into two groups, housed in cages (n=10,000) or floored (n=10,000) and were artificially inseminated weekly. The cage housed hens consumed 10% less (P<.01) feed, than floored hens. Feed intake gradually increased (P<.01) from pre-peak through peak stage of egg lay and then declined after the peak, supplemented (P<.01) by the interaction of housing and production stages. Consequently, the trend for feed conversion ratio (FCR) per dozen of eggs was reversed (P<.01) both for floored (3.80±0.86 kg) and cage housed (2.65±0.45 kg) hens. Survival rate was higher (P<.01) in cage housing (99.74±0.07) by (0.05%) than floor (99.69±0.09) that declined with advancement in stage of production. Floored hens were heavier (P<.01) than cage housed hens whereas the cockerels" weight was similar (P>.05). Cage housed flocks had (3%) more (P<.01) egg lay (70.60±12.75) with 4% more (P<.05) settable eggs (95.99±14.00) that hatched (86.46±4.24) better (P<.01) than floored flocks (67.35±15.04; 91.99±14.00; 84.46±8.95). The quality of chicks was equally (P>.05) better in both housings that improved (P<.01) with advancement in production. Neither egg quality parameters nor weight of chicks they hatched differed (P>.05) with housing although significantly (P<.01) increased as the production stage advanced. The levels of biochemical and haematological parameters were almost similar (P>.05) in all flocks. Better performance of caged flocks leads us to recommend cage housing.

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“…Matrizes mais jovens tendem a produzir ovos mais leves e, consequentemente, pintos mais leves, além de apresentarem menor taxa de eclodibilidade e elevada mortalidade embrionária comparada aos ovos produzidos por matrizes mais velhas (DALANEZI et al, 2004). Ao passo que, pintinhos provenientes de matrizes mais velhas apresentam maior peso corporal e se desenvolvem mais rápido devido à maior disponibilidade de nutrientes no ovo (ARAÚJO et al, 2016).…”

Section: Influência Da Idade Da Matriz No Frango De Corteunclassified

Imunidade Materna Do Frango Nas Artrites Causadas Por Reovírus

Silva¹,

Caillouel²,

Pelissaro³

et al. 2023

Zootecnia: Tópicos Atuais Em Pesquisa

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O frango de corte após o nascimento não é imunocompetente e depende da transferência de anticorpos maternos via ovo para que desenvolva proteção contra patógenos nos primeiros dias de vida. Esta é a fase onde as aves estão mais susceptíveis a microrganismos patogênicos, entre os quais são causadores de artrite infecciosa, como o reovírus aviário. A idade da matriz é um fator que pode afetar tanto a imunidade dos frangos de corte quanto o desenvolvimento intestinal, qualidade do pintinho, eclosão, mortalidade embrionária, entre outros. Neste sentido, a idade da matriz que dará origem ao frango. também pode influenciar no peso do ovo e as proporções de seus constituintes. Apesar do conhecimento sobre fatores que contribuem para aumento do tamanho e conteúdo do saco vitelino, pouco se sabe sobre como a idade da matriz influencia na transferência de imunoglobulinas para a gema de ovo e, consequentemente, na concentração de imunoglobulinas para a progênie. Atualmente as artrites infecciosas representam um dos maiores desafios sanitários e econômicos na avicultura industrial em todo o mundo, sendo o reovírus um agente etiológico comumente envolvido. Neste contexto, os níveis de anticorpos maternos desempenham um papel crucial no estado de saúde das aves devido ao curto tempo de vida dos frangos de corte e as inúmeras perdas frente a infecções causadas por reovírus.

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Efeito da idade da matriz sobre o rendimento e qualidade da carne de frangos de corte

Cited by 5 publications

References 8 publications

What determines hatchling weight: breeder age or incubated egg weight?

What determines hatchling weight: breeder age or incubated egg weight?

Production performance of broiler breeders under cage versus floor housing systems

Imunidade Materna Do Frango Nas Artrites Causadas Por Reovírus

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