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.
Which stakeholders in the dairy sector have an influence on the productive life of dairy cows? Research results from FiBL and Agroscope suggest that broad-based cooperation is needed to create structures for a longer productive life.
Agriculture is aiming to reduce greenhouse gas and ammonia emissions. Agroscope showed that for dairy cattle housing, feed composition plays a role in these emissions as well as wind and temperature.
Lazzari G., Münger A., Eggerschwiler L., Borda-Molina D., Seifert J., Camarinha-Silva A., Schrade S., Zähner M., Zeyer K., Kreuzer M., Dohme-Meier F.
Tannin-containing feedstuffs like Acacia mearnsii and sainfoin (Onobrychis viciifolia) have a measurable impact in reducing methane emissions from dairy cows. However, since these feedstuffs in some cases lead to productivity losses, careful consideration must be given to their use.