Activation of Physiological Thermoregulation Mechanisms in Hair Ewes by Effect of Heat Load Acquired during Summer
Ten non pregnant Katahdin×Pelibuey multiparous ewes were used to evaluate the effect of accumulated heat load during summer on the activation of physiologic thermoregulatory mechanisms in an arid-dry environment.Ewes were allocated in a penduring the summer of 2011.On day 15 0f each month,live weight (LW),hody condition score (BCS),rectal temperatures (RT),respiration rate (RR)and glucose concentration were recorded during the morning and afternoon.Mean comparisons were performed among months and times.The LW was similar (P>0.05 )among summer months,hut BCS increased (P<0.05 )in Septemher compared with the other months.In August,RT was lower (P<0.05)during the morning and higher (P<0.05 )during the afternoon compared with the other months.During the morning,RR in July was similar (P>0.05)to that of September,but greater (P<0.05)to those from June and August.Compared with other months.lower glucose concentration was observed in August during the morning and during the afternoon in Septemher(P<0.05 ).
Gastélum-Delgado,M.A Guerra-Liera,J.E Macías-Cruz,U Avenda(n)o-Reyes,L Moreno-Quiroz,J López-Juárez,L.A Chávez-Cazarez,L.E Corrales-Aguirre,J.L
Department of Zootechnics,Faculty of Agronomy,Autonomous University of Sinaloa,México Institute of Agricultural Sciences,Autonomous University of Baja California,México
国际会议
XVIth International Congress on Animal Hygiene(第十六届动物卫生国际会议(ISAH 2013))
南京
英文
142-144
2013-05-05（万方平台首次上网日期，不代表论文的发表时间）