[{
  "type": "article-journal",
  "title": "PHYSIOLOGICAL PARAMETERS AND THERMAL COMFORT INDICES OF LAYERS FED VEGETABLE GLYCERIN",
  "author": [
    {
      "family": "Sena2",
      "given": ""
    },
    {
      "family": "Bastos-Leite",
      "given": ""
    },
    {
      "family": "Vasconcelos",
      "given": ""
    },
    {
      "family": "Goulart",
      "given": ""
    },
    {
      "family": "Farias",
      "given": ""
    },
    {
      "family": "S.Maranguape",
      "given": ""
    }
  ],
  "issued": {
    "date-parts": [[2019]]
  },
  "container-title": "Journal of Animal and Plant Sciences",
  "ISSN": "1018-7081",
  "volume": "29",
  "issue": "1",
  "page": "33-40",
  "DOI": "N/A",
  "abstract": "<p>The aim of this study was to evaluate the physiological parameters and thermal comfort indices of commercial layers<br>fed diets containing different levels of vegetable glycerin. A total of 378 Hy-Line White layers at 32 weeks of age were<br>housed in a shed at nine birds per cage. The experiment lasted 84 days. Treatments consisted of a control diet (without<br>glycerin) plus five diets with increasing levels of vegetable glycerin (3, 6, 9, 12, and 15%). The black globe humidity<br>index (BGHI) and radiant heat load (RHL) were out of the thermal comfort zone and were higher in the afternoon period<br>in all production cycles. Respiratory frequency was lower in the morning, when 3% glycerin were added to the diet. The<br>surface temperatures of comb, wattle, back, wings, head, and feet did not differ with the glycerin levels and were higher<br>in the 2nd cycle, but within the range recommended for the species. Glycerin inclusion levels of up to 12% can be used<br>to partially replace corn in diets for layers housed in sheds covered with ceramic tiles without compromising their<br>thermoregulation in a hot environment.</p>",
  "publisher": "Pakistan Agricultural Scientists Forum",
  "URL": "https://thejaps.org.pk/AbstractView.aspx?mid=AS-17-0200"
}]