The goals of these trials were to investigate the effects of different dietary amino acid concentrations and valine:lysine ratios on piglet performance and health. Two 4-week trials with 90 weaned piglets each were conducted. Both trials were set up as a block design with 3 treatments and 6 replicates per treatment (a total of 18 pens with 5 piglets each). The following treatments were tested: Trial 1: (i) 14.0 MJ DE, 180 g CP, 12.5 g lysine, 8.6 g valine; (ii) 14.0 MJ DE, 165 g CP, 11.5 g lysine, 7.9 g valine; (iii) 14.0 MJ DE, 165 g CP, 11.5 g lysine, 8.5 g valine. Trial 2: (i) 14.0 MJ DE, 180 CP, 12.4 g lysine, 8.6 g valine; (ii) 14.0 MJ DE, 165 g CP, 12.4 g lysine, 7.9 g valine; (iii) 14.0 MJ DE, 165 g CP, 12.4 g lysine, 8.6 g valine. In trial 1, the higher crude protein and amino acid concentrations led to a significant improvement in FCR (1.43a, vs 1.53b and 1.51b kg/kg; P<0.05). Increasing the amino acid concentrations in the treatment with reduced CP concentration allowed maintain performance to be maintained at the level of the standard diet in trial 2. The supplementation of the essential amino acid valine did not affect performance or animal health in either trial.
Stable climate has an important impact on the respiratory health of horses. In a study on indoor climate quality, three different ventilation systems were tested.
Although milk-production oriented (MPO) cow breeds have also become established in the mountain region, farms with the dual-purpose ‘Original Simmental’ breed are proving to be economically viable, with lower costs and higher direct payments making up for lower revenues from milk.
High milk yields before drying-off increase the risk of udder infections during the dry period. An online survey highlights what drying-off methods are currently used and how farmers rate the ‘incomplete milking’ approach for reducing milk yield.