University of Natural Resources and Life Sciences, Vienna (BOKU) - Research portal
Gewählte Master / Diploma Thesis:
Juergen Haidvogl
(2007):
Auswirkungen der temporären Ammenkuhhaltung auf die Milchinhaltsstoffe.
Master / Diploma Thesis,
BOKU-Universität für Bodenkultur,
pp 100.
UB BOKU
obvsg
- Abstract:
- In the current study the varying of the milk components after transposing from dairy production to temporary suckler cows was examined by using 35 milk cows. During the lactation (after about 200 milking days) the milking of the cows by milking machines had stopped and calves suckled the udders. 21 days before transposing and on the day of transposing from dairy production to temporary suckler cows milk was sampled mechanically. Also milk was sampled manual 2, 4, 8 and 49 days after transposing to temporary suckler cows. This milk was observed about milk fat, milk protein, nonfat dry matter, somatic cells and ketone. Also the influence of lactations number, milk amount and the nursing quality of the suckler cows on the varying milk components after transposing was observed. The study exhibited that the milk components milk fat, nonfat dry matter and ketone weren't systematically influenced by transposing. For a short time the results exhibited that the milk protein increased after transposing about 0.35 percentage. The somatic cell account increased also about 300.000 cells per ml milk after transposing from dairy production to temporary suckler cows. This effect was by younger cows at about 50 percent higher than by cows with 3 or more lactations. The milk components were also influenced by the nursing quality of the suckler cows. Cows with a low nursing quality had at the end of lactation 100 percent more somatic cells in the milk than cows with a high nursing quality (900.000 cells per ml milk to 470.000 cells per ml milk). The increase of the somatic cell account of cows with a lower milk amount was 50 percent slower than of cows with a higher milk amount. In the end of the lactation all cows with higher and lower milk amount showed the same somatic cell account.
- Beurteilende(r): Windisch Wilhelm Matthias