Feeding strategy during growing phase on the performance and carcass traits in beef bulls finished on the pasture.

The objective of this study was to evaluate the performance, feed intake, carcass traits, and economic aspects of cattle fed different levels of supplementation during the growing phase (mineral supplementation-MS; low protein supplementation-PS, at 0.15% of body weight (BW); and a high protein-energy supplementation-PES at 0.40% of BW) and finished on the pasture with concentrate supplementation at 1.

Effects of feeding 25-hydroxyvitamin D with an acidogenic diet during the prepartum period in dairy cows: Mineral metabolism, energy balance, and lactation performance of Holstein dairy cows.

Our objective was to determine the effects of feeding 25-hydroxyvitamin D [25(OH)D], or vitamin D (cholecalciferol) on plasma, mineral, and metabolite concentrations, mineral balance, mineral excretion, rumination, energy balance, and milk production of dairy cows. We hypothesized that supplementing 3 mg/d of 25(OH)D during the prepartum period would be more effective than supplementing vitamin D at the National Research Council (2001) levels to minimize calcium imbalance during the transition period and improve milk production of dairy cows. Forty multiparous, pregnant nonlactating-Holstein cows were enrolled in this study.

Sward characteristics and performance of dairy cows in organic grass-legume pastures shaded by tropical trees.

The silvopastoral system (SPS) has been suggested to ensure sustainability in animal production systems in tropical ecosystems. The objective of this study was to evaluate pasture characteristics, herbage intake, grazing activity and milk yield of Holstein×Zebu cows managed in two grazing systems (treatments): SPS dominated by a graminaceous forage (Brachiaria decumbens) intercropped with different leguminous herbaceous forages (Stylosanthes spp., Pueraria phaseoloides and Calopogonium mucunoides) and legume trees (Acacia mangium, Gliricidia sepium and Leucaena leucocephala), and open pasture (OP) of B.

Determining the adaptation potential of entomopathogenic nematode multiplication of Heterorhabditis riobravus and Steinernema carpocapsae (Rhabditida: Heterorhabditidae, Steinernematidae) in larvae of Alphitobius diaperinus (Coleoptera: Tenebrionidae) and Galleria mellonella (Lepidoptera: Pyralidae).

Our objective was to determine the mean production of entomopathogenic nematodes (EPNs) infective juveniles (IJs) from Alphitobius diaperinus and Galleria mellonella larvae and the possible morphometric changes of emergent IJs. Heterorhabditis riobravus and Steinernema carpocapsae nematodes were placed on 20 larvae of each host individually located in Petri dishes, which were maintained in an environmental control chamber. After death, each larva was individually transferred to White traps where they remained for a maximum of 20 days in environmental control chambers.