Author(s):

Pradeep Kumar Godwal, Anil Moolchandani, Hakim Manzer, Vijay Kumar, Meenaxi Sareen, Amit Kumar Chotiya, NS Rathore and Jitendra Kumar

Abstract: Diurnal rhythm of blood haematological parameters was studied in adult and apparently healthy, male Martina franca (Poitou) jacks (n=6). The jacks weighing between 270 to 350 kg, and were fed with standard ration for maintenance as per NRC (2007) between 10:00h to 14:00h the donkeys remained exposed to solar radiation. Blood was collected for haematological parameters at 07:00 h, 10:00 h, 14:00 h and 16:00 h on 1^st, 4^th and 7^th day in a seven day experimental period during October 2016 heat stress period (HS). Thermal heat index (THI) =69.90 at7.00h and 80.14 at 14.00h) and on a single day in peak winter in December 2016 Control ‘C’, THI: 63.93 at 7.00h and 80.14 at 14.00h). Haematological indices were studied on 1^st, 4^th and 7^th day in the heat stress period which were compared with that on a single day in winter. WBC count increased significantly from 7:00h to 10.00h in both the seasons. Maximum significant increase was observed from 07:00h to 14.00h in heat stress period on 7^th day of exposure. RBC, Hb and Hct concentrations increased in the afternoon on day 1 and 4 only in the heat stress period. Higher WBC, HCT, Hb and RBC were observed due to heat stress in the afternoons in the heat stress period and the significance varied.

DOI: 10.22271/phyto.2021.v10.i1s.13533

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