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| Sgavioli,S; Filardi,R da S; Praes,MFFM; Assuena,V; Pileggi,J; Andrade,P de C; Boleli,I C; Junqueira,OM. |
| This study was carried out to evaluate the performance and egg quality of laying hens, in their second laying cycle submitted to different forced-molting methods and three environmental temperatures. Six hundred layers were distributed in a completely randomized experimental design with 15 treatments with five replicates of eight birds each, according to 5x3 factorial arrangement (molting methods vs. temperatures). The following forced-molting methods were applied: 90%, 70%, 50% dietary alfalfa inclusion, addition of 2,800 ppm zinc, and feed fasting. Temperatures were: 20 ºC, 27 ºC and 35 ºC. At the end of each period of the second laying cycle, bird performance and egg quality were evaluated. Data were submitted to analysis of variance and means were... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Egg quality; Heat stress; Performance; Welfare. |
| Ano: 2011 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2011000300008 |
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| Sgavioli,S; Filardi,R da S; Praes,M F F M; Domingues,C H de F; Andrade,P de C; Pileggi,J; Boleli,I C; Junqueira,O M. |
| An experiment was conducted to evaluate the biometrics of organs (ovary, oviduct, liver, proventriculus and gizzard) of laying hens submitted to different forced-molting methods of molt and maintained at three different temperature. Organs were evaluated after molting and resting period. Six hundred birds were distributed according to a completely randomized experimental design in a 5x3 factorial arrangement (forced-molting methods x environmental temperatures) into 15 treatments with 5 replicates of 8 birds each. The molting methods applied were the dietary inclusion of 90%, 70%, 50% of alfalfa, 2,800 ppm zinc oxide, or total feed restriction. Birds were kept at ±20 ºC, ±27 ºC, or ±35 ºC. Data were submitted to analysis of variance and means were compared... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Heat stress; Ovary; Feed restriction; Welfare. |
| Ano: 2013 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2013000300011 |
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| Sgavioli,S; Filardi,R da S; Praes,M F F M; Domingues,C H de F; Pileggi,J; Andrade,P de C; Boleli,I C; Junqueira,O M. |
| The objective of the present experiment was to compare the performance, egg quality and organ morphometrics of commercial layers submitted to alternative forced molting methods using dietary fibers. The experimental period included the phases of molting, rest, and second laying cycle (six periods of 28 days each). In the trial, 320 commercial Isa Brown layers with 72 weeks of age were distributed, according to a completely randomized experimental design into five treatments with eight replicates of eight birds each, totaling 40 experimental units. Molting was induced by feeding diets with the inclusion of alfalfa or soybean husks at 80% and 60% or feed fasting. Treatments were applied for 14 days. Performance and egg quality parameters were evaluated for... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Alfalfa; Soybean husks; Egg production; Morphometrics. |
| Ano: 2013 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2013000400011 |
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