Commercial laying hens
Cobalt and Vitamin B 12 in Diets for Commercial Laying Hens on the Second Cycle of Production
... for commercial laying hens on the second production cycle w as ...light commercial laying hens, Lohmann LSL, w ere used at initial phase of forced molting laying ...12 ...
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Performance and Egg Quality of Commercial Laying Hens Fed Diets Formulated Using Non-Linear Programming
... of commercial laying hens. A total of 288 Hisex ® White laying hens, ...age. Hens were distributed in a completely randomized block design, including six treatments with six ...
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Digestibility and physico-chemical characteristics of acid silage meal made of pirarucu waste in diets for commercial laying hens
... for commercial laying hens on apparent digestibility and energy ...White hens with 71 weeks of age were assigned to a completely randomized with two treatments (control diet and diet with 3% ...
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Infection of Commercial Laying Hens with
... Aspartate aminotransferase enzymatic activity of semi-heavy birds w as significantly higher (p<0.05) five days post-inoculation as compared to the mean value previous to inoculation ([r] ...
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Enzyme complex at different levels in diets with enriched ingredients for commercial laying hens
... In view of the obtained results, we may state that the level of enzyme complex added to the diets does not influence the digestibility coefficients or energy values of laying-hen diets. The increasing enzyme ...
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Pathological, Immunohistochemical, and Molecular Findings in Commercial Laying Hens and in Backyard Chickens Naturally Infected with the Infectious Laryngotracheitis Virus
... lesions. Characteristic lesions of the disease were observed mainly in the larynx and trachea (25/78) (Figure 3), followed by lungs (21/78), turbinates (Figure 4), paranasal sinuses (15/78), and conjunctiva (24/78). The ...
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Use of Nicarbazin, Salinomycin and Zinc Oxide as Alternative Molting Methods for Commercial Laying Hens
... Based on the results obtained in the present study, it was concluded that methods alternative to feed fasting were efficient to induce feather molting in layers. Relative to the main performance parameters, only the diet ...
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Açaí meal on diet digestibility for commercial laying hens
... White laying hens (52-wks- old) were distributed in a completely randomized design, where treatments consisted of a control diet and an experimental diet (25% açaí meal) with six replicates of six birds ...
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Effect of oils sources on blood lipid parameters of commercial laying hens
... 204 concentrations. On the other hand, Bartov et al. (1971) and Washburn & Nix (1974) did not observe such effect. Oils have commonly been used as energy sources in diets for laying hens. Some of these ...
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Fish by-product meal in diets for commercial laying hens
... in laying diets, affirm that the use of agribusiness waste in feed can lead to a significant reduction in the production cost due to the substitution potential that they may have on the feed or a specific input, ...
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Energy values of traditional ingredients and sugarcane yeast for laying hens
... Considering that poultry regulate their feed intake according to their metabolizable energy intake, it is very important determine the metabolizable energy values of feedstuffs (Rostagno et al., 2005). Thus, this ...
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Syzygium cumini leaves (SCL) in laying hens diet
... monitoring commercial laying hens, since the productive performance of laying and egg quality, among other factors, depend on the availability of nutrients for the production ...of ...
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Limestone particle size and artificial light for laying hens in the second laying cycle
... production commercial units that do not provide artificial light to supplement the natural light and thereby subject the poultry to a photoperiod above 15 hours of light, as often recommended in the handling manual ...
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Chlorinated drinking water for lightweight laying hens
... for laying hens of different ages, there was no significant reduction in egg shell strength and ...If commercial laying hens do not receive water for 48 hours, egg production will ...
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Egg quality of laying hens fed diets with plant extracts
... on egg quality of Black Avifran laying hens in different periods of storage. A completely randomized design study with a 3x3 factorial scheme with three diets (control, paprika, and marigold flower extract) ...
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Requirement of Digestible Methionine + Cystine to Molted Laying Hens
... The present study aimed to determine the ideal requirement of digestible methionine + cystine to molted laying hens. The experimental period lasted 105 days, divided into five periods of 21 days. 144 Hisex ...
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Paprika and/or marigold extracts in diets for laying hens
... the laying rate and Haugh unit and reduced the cholesterol content in the yolk when compared with diets based on ...for laying, Altuntas & Aydin (2014) noted that egg weight decreased with the use of 20 ...
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Experimental infection of laying hens with Salmonella enterica serovar Gallinarum
... In the experiment with adult red birds, the green/green yellowish diarrhoea started 2-4 days after infection, but the birds continued eating, drinking and laying. Strong changes occurred closer to death. Birds ...
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Phenotypic and molecular detection of Salmonella sp. on growing, rearing and production phases in a commercial group of laying hens
... Rearing phase. When hens reached 13 weeks old, they were transported to other sheds. Using the same procedure described before, 96 cage swabs, 96 drinking fountain swabs, 96 cloacal swabs, 72 feed samples and 16 ...
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Digestible lysine levels for laying hens and their effects on egg quality
... Jardim Filho et al. (2010) registered a positive quadratic effect of supplemented digestible lysine for this parameter when studying 0.600, 0.700, 0.800 and 0.900% of digestible lysine for light laying ...
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