Production and utilisation of green feed dried by hot air. 2. Briquettes and cobs as the only basal feed for dairy cattle

Burgstaller, G.; Averdunk, G.

Wirtschaftseigene Futter 18(4): 305-315


Accession: 000170210

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For part 1 see NAR 43, 662.2. During 4 months 16 German Simmental and 12 German Simmental X German Red Pied cows, fed singly, were given initially roughage as hay and wilted grass silage and then 2 groups were adapted to briquettes or cobs made from pressed hot-air dried chopped grass, supplied also during the main period of 8 weeks, and the third group still got the hay and silage, which were given to all groups in the final periods. The average initial number of days of lactation was about 130 or more and the daily yield of milk about 15 kg. The cows had 2 kg roughage daily and the other feeds were supplied freely. Concentrate, mainly of cereals with oilmeals, was given according to milk yield and to type of basal feed given. Digestibility of the basal feeds was estimated during periods of 20 days with 3 adult wethers. Composition and digestibility of the feeds are shown. With briquettes and cobs intake of DM from basal feed increased, supply of nutrients, including energy, and their digestibilities were good and the amount of concentrate was less. The average intake from the pressed products was 2.33 kg DM/100 kg liveweight and the total intake of starch equivalent from basal feed and concentrate exceeded that in the group given no briquettes or cobs. With briquettes or cobs the yields of milk and of fat-corrected milk increased, that of milk fat fell significantly and milk protein did not change. There was no adverse effect on health. In spite of the high digestibility of nutrients in briquettes and cobs and the good results obtained, they were not recommended as the only feed for dairy cows in practical conditions.