Thermal comfort and performance of feedlot lambs finished in two climatic conditions
作者： Volmir Antonio Polli , Ricardo Zambarda Vaz , Sérgio Carvalho , Pablo Tavares Costa , Renius de Oliveira Mello
DOI: 10.1016/J.SMALLRUMRES.2019.03.002
关键词: Texel 、 Body weight 、 Animal science 、 Rectal temperature 、 Dry matter 、 Thermal comfort 、 Silage 、 Feedlot 、 Residual feed intake 、 Biology
摘要: Abstract The aim of this study was to evaluate the thermal comfort, performance, and behavior feedlot lambs finished in two climatic conditions. Twenty castrated Texel at an average age 75 days were used experiment. Diets consisted corn silage as roughage component plus concentrate, with roughage-to-concentrate ratios 50:50 50.5:49.5 for higher lower heat conditions, respectively. Higher respiratory frequencies temperatures eye region observed temperature, whereas rectal temperature did not differ between Lambs conditions experienced 15 four under stress, respectively, which correspond 27.7 6.5% period. group remained on six hours per day whose peak occurred 14h30 16h30. Dry matter intake relative body weight metabolic cold season more efficient using feed based their residual rumination efficiencies. Climatic affected performance a result discomfort.
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