Publication Date
1997
Description
Grazing system, stocking rate and monensin controlled release capsule (CRC) administration were investigated to determine impacts on methane (CH4) production by steers grazing alfalfa (Medicago sativa L.)/meadow bromegrass (Bromus biebersteinii Roem & Schult.)/Russian wildrye (Psathyrostachys juncea (Fisch.) Nevski) pastures. Pasture treatments consisted of 2 replications each of two grazing systems (continuous stocking or 10-paddock rotational stocking) at each of two stocking rates (low, 1.1 steer ha-1 or high, 2.2 steers ha-1). Half of the animals in each pasture were administered a monensin CRC while untreated animals served as controls. During the grazing season, 1 steer per treatment combination (n = 16) was sampled on four occasions for a 24 h period. Chemical composition of diets was affected by grazing management and sampling date, however, voluntary intake ( x = 13.8 kg d-1) and methane production (x = 0.69 ± 0.1L•kg BW-1•d-1) were unaffected by grazing treatment or sampling period. The energy lost through eructation of methane averaged 8.9% of gross energy intake.
Citation
McCaughey, W P.; Wittenberg, K; and Corrigan, D, "Methane Production By Steers on Pasture" (2024). IGC Proceedings (1993-2023). 4.
https://uknowledge.uky.edu/igc/1997/session9/4
Included in
Agricultural Science Commons, Agronomy and Crop Sciences Commons, Plant Biology Commons, Plant Pathology Commons, Soil Science Commons, Weed Science Commons
Methane Production By Steers on Pasture
Grazing system, stocking rate and monensin controlled release capsule (CRC) administration were investigated to determine impacts on methane (CH4) production by steers grazing alfalfa (Medicago sativa L.)/meadow bromegrass (Bromus biebersteinii Roem & Schult.)/Russian wildrye (Psathyrostachys juncea (Fisch.) Nevski) pastures. Pasture treatments consisted of 2 replications each of two grazing systems (continuous stocking or 10-paddock rotational stocking) at each of two stocking rates (low, 1.1 steer ha-1 or high, 2.2 steers ha-1). Half of the animals in each pasture were administered a monensin CRC while untreated animals served as controls. During the grazing season, 1 steer per treatment combination (n = 16) was sampled on four occasions for a 24 h period. Chemical composition of diets was affected by grazing management and sampling date, however, voluntary intake ( x = 13.8 kg d-1) and methane production (x = 0.69 ± 0.1L•kg BW-1•d-1) were unaffected by grazing treatment or sampling period. The energy lost through eructation of methane averaged 8.9% of gross energy intake.
