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1968 one-day old chicks of Isa brown hybrid were kept in an aviary system (Natura Typ AZ-187), which was divided in four groups of 492 animals each. At day 1, half of the animals were beak-trimmed by hot cut, whereas the beaks of the other chicks remained intact. At the beginning of week 16, 1500…

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…

“No two cows are alike in their behavioural characteristics. These individual differences become evident in the reactions and the sensitivity of cows towards environmental changes already in daily life situations. There is evidence that such behavioural characteristics predispose an animal’s stress responsiveness. We assessed two methods in order to quantify individual characteristics: (1) we asked…

The possibility to replace the milk substitute in the diet of the veal calf by cereals was studied in three feeding trials with 224 calves. The aim of the study was to reduce the production costs and to improve the image of veal production. The animals of the experimental group received either rolled barley or…

Three experiments with growing-finishing pigs were performed to evaluate the effects of dietary trivalent chromium (Cr) under certain feeding conditions. The results of the first study indicated that an amount of 200 mg Cr / t feedstuff (ppb) is sufficient since daily gain was increased when 200 ppb Cr was added compared to the control…

Self-feeding at a horizontal silo adjacent to the exercise yard is a labour-saving alternative in winter feeding. In an experiment with forty dairy cows divided into two groups, the impact of the animal/feeding place ratio (1,5:1, 2:1 and 2,5:1) on social and feeding behaviour of the cows was investigated. We also varied the distance between…

In a trial we investigated the influence of the filling time on silage quality. On the one hand we ensiled the pressed pulp after the transport from the sugar factory on the same day and on the other hand, ensiling was carried out after two days. In all variants we used 9 m3 silos and…

In a trial we investigated the efficacy of different silage additives. Besides seven chemical products we also tested an inoculant, which was applied in liquid and solid form, as well as a product which contained a combination of lactic acid bacteria and chemical substances. The tests were carried out in laboratory silos in two series.…

During 34 days 4 x 16 female and castrated male piglets of the large white breed received a complete feed with the following vitamin A-, E- and D-concentrations in two consecutive series: Treatment A: 4000 IE, 16 mg, 500 IE, treatment B: 6500 IE, 16 mg, 1100 IE, treatment C: 10000 IE, 25 mg, 1500…

66 newborn piglets of 11 litters were allotted to 6 treatments: 285 mg iron (Fe) as Fe methionine orally either within 12 h after birth or on the 2nd day (FeM1, FeM2), 290 mg Fe as Fe dextran orally either within 12 h after birth or on the 2nd day (FeD1, FeD2), 200 or 100…