Effect of Force Molting Programs on Egg Production and Quality of Laying Hens

Hassanien, Hanan

doi:10.3923/ajpsaj.2011.13.20

Cited by 7 publications

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“…El más común de estos métodos es el programa de muda convencional mediante ayuno prolongado con pérdida de peso que las lleve al peso obtenido a las 18 semanas de vida. Después de un cese total de la producción de huevos durante al menos 2 semanas se logra una mejor producción, ya que se mejora el porcentaje de postura, la calidad del huevo y de la cáscara (11). No obstante, bajo estas condiciones disminuye…”

Section: Introductionunclassified

“…The most common methods is the conventional molt program through prolonged fasting with weight loss that leads to a goal weight obtained at 18 weeks. After a complete cessation of egg production for at least 2 weeks, an improved production is achieved, since the laying is improved, as well as egg and shell quality (11). However, these conditions significantly reduce fertility and hatchability in breeding hens (12).…”

Section: Introductionmentioning

confidence: 99%

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Supplementation with humic substances affects the innate immunity in layer hens in posfasting phase

2016

Rev MVZ Córdoba

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El suplemento de sustancias húmicas afecta la inmunidad innata en gallinas ponedoras en fase posmuda ABSTRACTObjective. Asses the effect of supplementation with Humic substances (HS) over some innate immunity parameters (serum bactericidal activity, phagocytosis, bacterial agglutination, respiratory burst and lisozyme activity) in phase after fasting of layer hens. Materials and methods. 120 posfasting phase Hy Line Brown layer hens were taken which were distributed into four groups: The first and the second were supplemented with 0.1 and 0.2% of HS, respectively. The third group was supplemented with 0.25 mg/kg on levamisole hydrochloride and fourth group have no supplementation; during sixty days period. Blood samples were collected on 8th, 30th and 60th of experiment day. Results. The phagocytic index and respiratory burst increased significantly at day 30th in HS supplemented groups. Alike, serum bactericidal activity and lisozyme activity improved on 8 th day, nevertheless, changes were no evident latter. The bacterial agglutination was high in supplemented groups evaluated at everyone times. Conclusions. Results showed that HS behave as immunostimulant in the early phase after fasting layer hens.Key words: Agglutination, bactericide activity, Lisozyme, phagocytosis (Source: DeCS). RESUMENObjetivo. Evaluar el efecto de las sustancias húmicas (SH) sobre algunos parámetros de la inmunidad innata (actividad bactericida del suero, fagocitosis, aglutinación bacteriana, explosión respiratoria y actividad de la lisozima) en la fase posmuda de gallinas ponedoras. Materiales y métodos. Se utilizaron 120 gallinas ponedoras Hy Line Brown en la fase de posmuda, las cuales fueron divididas en cuatro grupos: Los dos primeros fueron suplementados con 0.1 y 0.2% de SH respectivamente, el tercer grupo fue suplementado con 0.25 mg/kg de Clorhidrato de levamisol y el cuarto grupo control sin suplemento; durante un período de 60 días. Las muestras sanguíneas se tomaron los días 8, 30 y 60 del experimento. Resultados. El Índice fagocítico y la explosión respiratoria se incrementaron significativamente a partir del día 30 de suplementación con SH. De la misma manera, la actividad bactericida del suero y la actividad de la lisozima aumentaron al día 8; no obstante no se evidenciaron cambios posteriores. La aglutinación bacteriana fue significativamente mayor en los grupos suplementados en todos los tiempos evaluados. Conclusiones. Los resultados demuestran que las SH se comportan como agentes inmunoestimulantes en la fase temprana de la posmuda en gallinas ponedoras Hy Line Brown. Palabras clave: Actividad bactericida, aglutinación, fagocitosis, lisozima (Fuente: DeCS).Rev.MVZ Córdoba 21(1):5198-5210, 2016. ISSN: 0122-0268 ORIGINAL 5199 INTRODUCCIÓNLos mecanismos de la respuesta inmune, innata o adaptativa durante una infección demandan un gasto energético que puede interferir con la capacidad productiva de animales susceptibles. Tradicionalmente, el abordaje de los problemas infecciosos incluye, además, de la disminución de los...

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Section: Introductionunclassified

Section: Introductionmentioning

confidence: 99%

Supplementation with humic substances affects the innate immunity in layer hens in posfasting phase

2016

Rev MVZ Córdoba

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“…In the production of commercial laying hens, the economic benefits of the late laying period decrease with decreasing of laying rate ( Zhang et al, 2022 ). Induced molting ( IM ) can restart a new laying cycle, restore a high rate of laying, and improve the quality of eggs and immune ability ( Hassanien, 2011 ). Molting can improve the laying performance of poultry ( Berg and Bearse, 1947 ; Len et al, 1964 ), but it can also cause a series of physiological effects.…”

Section: Introductionmentioning

confidence: 99%

Effect of induced molting on ovarian function remodeling in laying hens

Wang,

Gong,

et al. 2023

Poultry Science

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“…The main reason for the implementation (application) forced (forced) molting hens the extension of their production period, usually 69 weeks at 105 to 110 weeks of hen. This rule increases the cost of the respective type of production, reduce the costs of procurement 18 weeks, while the market is continuously supplied eggs for consumption (Anderson, 2016a;Elson and Croxall, 2006;Senčić i Butko, 2006;Hassanien, 2011;Radovic , 2011;Pandurevic, 2011;Maslić-Strižak, 2012;Zemcov, 2015). Common methods of eating their food restrictions, water and light regime, ie the length of the light days and light intensity.…”

Section: Introductionmentioning

confidence: 99%

Impact on productivity of forced molt and duration of production cycle of commercial laying hens held in cage systems

Mitrovic¹,

Pandurević²,

Dimitrijevic-Radoicic³

et al. 2016

Act Agr Serb

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The main objective of this study was to analyze the results of table egg production Lohmann Brown hybrid chickens before and after forced moulting, or study of the impact of forced molting on productivity and the duration of its lifetime hens. The surveys cover three periods, namely:-the first production of eggs in the first year (from 19-71. Weeks of age hens); the second-moulting period (from 72-76. Sunday); the third-after the forced molting period (from 77-106. weeks of age hens). The experiment was conducted on a total of 44,400 commercial laying hens reared in a cage system, "enriched" cages, family farm "Rakic-Commerce" (Batkovic, Bijeljina, Republic of Serbian, BiH). From 19 to 48 weeks of age with a hen housed load intensity was 85,11%, from 19 to 71 weeks of age to 82.49%, while the second phase capacity uu after moulting after laying hen housed intensity of the load was 74.36%. From 19 to 48 weeks of age mortality rate was 4.21%, up 8.47% 71 weeks, during moulting 1.35%, from 77 to 106 weeks of age 3.24%. Between the age of hens and intensity of capacity in the first 30 weeks egg production was determined by the mean positive correlation connection (rp = 0.470) (P <0.01). In other phases of the production cycle of these indicators did not exist or were very weak negative correlation.

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Effect of Force Molting Programs on Egg Production and Quality of Laying Hens

Cited by 7 publications

References 0 publications

Supplementation with humic substances affects the innate immunity in layer hens in posfasting phase

Supplementation with humic substances affects the innate immunity in layer hens in posfasting phase

Effect of induced molting on ovarian function remodeling in laying hens

Impact on productivity of forced molt and duration of production cycle of commercial laying hens held in cage systems

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