Izvorni znanstveni članak

https://doi.org/10.24099/vet.arhiv.160130

Supplemental chromium in cold-stressed buffalo calves (Bubalus bubalis): effects on growth performance, nutrient utilization and cell mediated and humoral immune response

Muneendra Kumar orcid.org/0000-0002-1316-9249 ; Department of Animal Nutrition, College of Veterinary Science and Animal Husbandry, DUVASU, Mathura, India
Harjit Kaur ; Agricultural Extension Division, Indian Council of Agricultural Research, Pusa, New Delhi, India
Veena Mani ; Dairy Cattle Nutrition Division, National Dairy Research Institute, Karnal, India
Rijusmita S. Deka ; Krishi Vigyan Kendra, Dhemaji, India
Amrish K. Tyagi ; Dairy Cattle Nutrition Division, National Dairy Research Institute, Karnal, India
Gulab Chandra ; Department of Veterinary Physiology and Biochemistry, Sardar Vallabhbhai Patel University of Agriculture and Technology, Meerut, India
Ajay K. Dang ; Dairy Cattle Physiology, National Dairy Research Institute, Karnal, India
Raju Kushwaha ; Department of Animal Nutrition, College of Veterinary Science and Animal Husbandry, DUVASU, Mathura, India

Sažetak

Various stressors significantly increase urinary excretion of chromium (Cr), suggesting that Cr may be physiologically linked to the responses to control stress. The aim of this study was to determine the physiological responses of buffalo calves to increased Cr supply under low ambient temperature. In a randomized complete block design, twenty-four Murrah buffalo calves were assigned to 4 treatments for a period of 120 days. Treatments included either no supplemental Cr (control), 0.5 mg of supplemental Cr/kg DM, 1.0 mg of supplemental Cr/kg DM, or 1.5 mg of supplemental Cr/kg DM. Buffalo calves were monitored daily for physiological variables, dry matter intake (DMI) and fortnightly for body mass change. Blood samples were collected at fortnightly intervals and analyzed for the biomarkers of immunity and plasma trace mineral concentration. At the end of the 120 day experimental period, a 7 day metabolic trial was conducted. The average temperature-humidity index (THI) and relative humidity (RH) during the study were 58.10 units and 52.0% respectively. Physiological variables, DMI and growth performance did not differ among all treatments. 1.5 mg Cr/kg DM increased B and T-cell proliferation, neutrophil phagocytic activity and ferric reducing antioxidant power (FRAP) value, whereas plasma total immunoglobulin (TIg) and immunoglobulin G (IgG) concentrations were the highest in the 1.0 and 1.5 mg Cr/kg DM group. Nutrient digestibility, nitrogen (N) metabolism and trace mineral bioavailability did not differ between treatments, while the bioavailability of Cr showed a positive correlation with supplemental Cr level. The results suggest that in cold conditions, increased Cr supply can improve immune response without affecting physiological response, growth performance and nutrient utilization in buffalo calves.

Ključne riječi

buffalo calves; chromium; growth performance; immunity; cold-stressed

Hrčak ID:

185592

URI

https://hrcak.srce.hr/185592

Datum izdavanja:

3.7.2017.

Podaci na drugim jezicima: hrvatski

Posjeta: 1.835 *