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| Vieira Filho,JA; Garcia,EA; Oba,E; Santos,TA; Molino,AB; Silva,AP; Pelícia,K; Paz,ICLA. |
| ABSTRACT The aim of this study was to compare the effects of beak trimming by hot blade or infrared radiation on production indicators and plasma levels of corticosterone in pullets. During the rearing phase, an entirely random delineation was used a 2 x 3 factorial design (two different techniques for beak trimming x 3 strains), a total of six treatments with six repetitions of 20 hens. In the growing phase, the previous treatments were divided into 12, with eight repetitions with seven hens. These treatments were then distributed in a factorial design of 2 x 3 x 2 (two methodologies for beak trimming during rearing phase x three strains x with or without beak trimming at ten weeks of age). In the rearing phase the birds treated by infrared radiation had... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Beak treatment; Infrared radiation; Poultry production; Stress; Welfare.. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2018000100063 |
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| Pelicia,K; Garcia,EA; Santos,TA; Santos,GC; Vieira Filho,JA; Silva,AP; Moreira,J; Rabello,CBV; Garcia,RG. |
| ABSTRACT This study aimed at evaluating beak-trimming methods and intensities on the performance, beak length and uniformity, and egg parameters of commercial layers. During the rearing period, birds were distributed in randomized blocks, with a 2x3 factorial design + two treatments, consisting of beak trimming with infrared (IR) radiation (moderate or severe); three IR intensities (low: 42 nm, intermediate: 46 nm, or high: 52 nm); and two control hot blade (HB) beak trimming treatments (moderate or severe) with eight treatments and five replicates of 21 chicks each, totaling 840 birds. During the growing phase (second experiment) the factorial design was modified to 2 x 3 x 2 + 4, comprising two IR beak-trimming intensities (moderate or severe); three IR... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Alternative beak-trimming methods; Beak-trimming; Infrared radiation; Lohmann White layers. |
| Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2019000100300 |
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| Hafezi, Negar; Sheikhdavoodi, Mohammad Javad; Sajadiye, Seyed Majid. |
| The effect of drying behaviour on the drying rate and quality characteristics of potato slices in a vacuum-infrared drying system was studied. In this research, the effect of the infrared radiation powers (100, 150, and 200 W) and vacuum levels (20, 80, 140 mmHg and atmosphere pressure) at different slice thickness (1, 2 and 3 mm) on drying rate and shrinkage percentage and rehydration capacity were investigated. It was concluded that infrared radiation power amount has a significant effect on processing time and drying rate. With increasing radiation power, drying time is reduced and consequently drying rate is increased. The drying rate curve of potato slices at initial drying time is in the ascending phase because of surface moisture evaporation and... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Potato; Drying rate; Vacuum; Infrared radiation; Shrinkage; Rehydration. |
| Ano: 2016 |
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/3583 |
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