CORRELATION BETWEEN BODY WEIGHT &amp; EGG WEIGHT OF DOKKI AND FAYOUMI HEN IN PAKISTAN

Haq,

doi:10.6000/1927-5129.2011.07.02.14

Cited by 10 publications

(7 citation statements)

References 6 publications

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“…Higher egg weight for heavier birds as observed in this study is in agreement with the literature (ALKAN et al, 2010;HAQ et al, 2011). In the present study it was observed that the egg weight is directly related to body weight and sexual maturity, and birds that lay smaller eggs at the start of production will continuously produce smaller eggs.…”

Section: Resultssupporting

confidence: 93%

Digestible Lysine Levels for Grower Phase Brown Egg Layers

Leite¹,

Leandro²,

Stringhini³

et al. 2019

SCI. ANIM. HEALTH

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The objective was to determine the level of digestible lysine in the grower diet of brown egg layers at two weight categories, and assess the residual effect of the grower diet on the laying phase. A total of 400 13-week-old brown egg layers were used, in a randomized blocks design with a 2 x 4 factorial arrangement (two weight categories x four digestible lysine levels: 5.29, 6.29, 7.29 and 8.29 g/kg), with five replications and 10 birds per experimental unit. A metabolism assay was carried out during the 17th week of age. Body weight, feed intake, feed conversion and weight gain were evaluated between 23 and 35 weeks; and egg quality was assessed during three 28-day periods. Data were subjected to analysis of variance and polynomial regression. No link was found between layer weight categories and lysine levels in grower diet for all studied variables. Nitrogen balance increased as digestible lysine was added to diets. There was no effect of digestible lysine on weight gain and precocity of production. Birds in the standard weight category were more precocious and had higher egg production and weight during the laying phase. Digestible lysine levels in diet did not influence performance and egg quality during the laying phase. A level of 5.2 g/kg of digestible lysine is recommended in grower diet (13 to 20 weeks of age) for brown egg layers, which corresponds to an intake of 550 mg/bird/day.

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Section: Resultssupporting

confidence: 93%

Digestible Lysine Levels for Grower Phase Brown Egg Layers

Leite¹,

Leandro²,

Stringhini³

et al. 2019

SCI. ANIM. HEALTH

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“…Tabela 4 -Peso do ovo (PO), produção de ovos e massa de ovos de poedeiras semipesadas com duas categorias de peso no período de 28 a 40 semanas de idade alimentadas com diferentes níveis de Foi verificado efeito (p˂0,05) do peso da ave sobre o peso do ovo. As poedeiras com peso padrão apresentaram ovos mais pesados que aves de menor peso corporal (Tabela 4), o que está de acordo com outros estudos (ALKAN et al, 2010;HAQ et al, 2011;UDEH, 2007).…”

Section: Resultsunclassified

Níveis De Lisina Digestível Para Poedeiras Semipesadas Com Duas Categorias De Peso

Leite¹,

Leandro²,

Carvalho³

et al. 2019

SCI. ANIM. HEALTH

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Objetivou–se determinar a exigência de lisina digestível na dieta de postura (28 a 40 semanas) de poedeiras com duas categorias de peso corporal. Foram utilizadas 400 poedeiras semipesadas da linhagem Embrapa 031, em pico de postura, com peso considerado leve (1.630 g) e padrão (1.830 g), sendo estudado níveis de lisina digestível (0,590, 0,690, 0,790 e 0,890%) em delineamento em blocos ao acaso em esquema fatorial 2 x 4 (duas categorias de peso x quatro níveis de lisina digestível), com cinco repetições e 10 aves por parcela. Foram avaliados a digestibilidade dos nutrientes da dieta na 32ª semana, desempenho zootécnico e qualidade de ovos durante três ciclos de 28 dias, além do desenvolvimento do aparelho reprodutor. Os dados foram submetidos à análise de variância e a regressão polinomial. As aves de maior peso apresentaram maior consumo de ração e maior peso dos ovos. Não houve efeito do peso das aves sobre o percentual de albúmen, gema, casca, espessura de casca e unidade Haugh. As aves de peso leve obtiveram maior peso relativo do oviduto, no entanto não houve efeito do peso sobre o comprimento e número de pregas do magno e istmo. Houve efeito quadrático positivo dos níveis de lisina digestível sobre os resultados de ingestão de nitrogênio, balanço de nitrogênio e balanço de nitrogênio por massa de ovo. Conclui-se que níveis crescentes de lisina digestível não proporcionaram melhores resultados no desempenho e qualidade de ovos. Recomenda-se o nível de 0,590% de lisina digestível na ração de postura, o que corresponde ao consumo de 577 mg/ave/dia.

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“…The hatching weight of chicks follows egg size in a parental population (Abiola et al 2008). Similarly, there is a positive correlation between egg weight and hatch weight (Haq et al 2011). The Sasso chicken is an exotic breed that has been selected for higher body weight and egg size.…”

Section: Discussionmentioning

confidence: 99%

Growth performance, mortality, and carcass yield evaluation of pure and reciprocal crosses between Sasso and Wassache chickens

Dzungwe

Tozo

Chrysostome

2022

Trop Anim Health Prod

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The indigenous chicken production has become an integral part of smallholder farming systems in Africa. Their products are preferred due to their taste and flavor; crossbreeding using exotic breeds can improve the productivity of these chickens without sacrificing their genetic merits. This study was aimed at improving the Wassache chicken. F1 generations of the crosses between the Wassache and Sasso chickens were simultaneously evaluated for growth traits, mortality, and carcass yield in a pure and reciprocal cross design. Data on body weight, performance, and mortality were collected on 451 birds (Sasso × Sasso [SS] = 110; Wassache × Wassache [WW] = 113; Sasso × Wassache [SW] = 113 and Wassache × Sasso [WS] = 115) for 12 weeks. On the 12th week of the study, 20 birds from each genotype were dissected to determine carcass yield. All data collected were analyzed using Minitab 19. The results showed significantly higher (P < 0.05) values reported for the SS genotype in all parameters studied. Likewise, the reciprocal crosses showed higher performance in growth and carcass traits next to pure Sasso. However, the feed conversion ratio and dressing percentage of the hybrids did not differ (P < 0.05) from those of the SS and WW genotypes. Within the reciprocal crosses, there was no significant difference (P > 0.05) in all parameters measured except for hatch weight where the WS showed a higher (P < 0.05) hatch weight compared to the SW cross. The study encourages the crossbreeding of the Wassache and Sasso chickens for improved meat production in this region.

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CORRELATION BETWEEN BODY WEIGHT & EGG WEIGHT OF DOKKI AND FAYOUMI HEN IN PAKISTAN

Cited by 10 publications

References 6 publications

Digestible Lysine Levels for Grower Phase Brown Egg Layers

Digestible Lysine Levels for Grower Phase Brown Egg Layers

Níveis De Lisina Digestível Para Poedeiras Semipesadas Com Duas Categorias De Peso

Growth performance, mortality, and carcass yield evaluation of pure and reciprocal crosses between Sasso and Wassache chickens

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