Zobrazeno 1 - 10
of 68
pro vyhledávání: '"H. Willeke"'
Autor:
L. Richter, H. Willeke
Publikováno v:
Zeitschrift für Tierzüchtung und Züchtungsbiologie. 96:38-43
Publikováno v:
Zeitschrift für Tierzüchtung und Züchtungsbiologie. 97:86-94
Publikováno v:
Archives Animal Breeding. 50:356-362
Title of the paper: Fattening- and slaughter performance of bulls and heifers of beef breeds and the cross breed German Angus x Simmental The objective of this study was to analyze the differences between fattening and slaughter performances as well
Autor:
H. Willeke, T. Dürsch
Publikováno v:
Archives Animal Breeding. 45:23-28
Title of the paper: Prediction of the body weight of Simmental heifers using heart girth measurements The decision of the date of the first insemination of heifers is mainly based on the weight. In most of the dairy farm no scale exists, therefore a
Autor:
H. Willeke, M. Wufka
Publikováno v:
Archives Animal Breeding. 44:497-504
Title ofthe paper: Influence of breed and lactation number on udder traits of dairy cows For using automatic milking Systems (AMS) a distance of 33 cm between teat and floor and of 1.5 cm between two backteats is necessary. To estimate the percentage
Publikováno v:
Exchange and Transport of Air Pollutants over Complex Terrain and the Sea ISBN: 9783642631603
The transport of energy, moisture and ozone in the atmospheric boundary layer over heterogeneous terrain was investigated in the context of the field experiment TRACT. An area of 12 km by 10 km in the upper Rhine valley was selected for this study of
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d1de38997ba4d3ffa88be516912a0436
https://doi.org/10.1007/978-3-642-57252-4_31
https://doi.org/10.1007/978-3-642-57252-4_31
Autor:
F. Pirchner, H. Willeke
Publikováno v:
Journal of Animal Breeding and Genetics. 106:312-317
Autor:
H Willeke
Publikováno v:
Livestock Production Science. 8:535-540
In a simulation study, the following four selection methods were compared: I selection of best 50% (parity ignored); II selection of best 50% within parity; III selection of all sows with litter size > 8, excluding sows of 1st parity; IV selection of
Autor:
H. Willeke
Publikováno v:
Livestock Production Science. 14:205-210
The effect of the Halothane-type of the sow on its lifetime prolificacy was studied on five farms. One-hundred and seventy Herdbook sows were typed according to the Halothane results of their progenies. The means and standard deviations of litter siz
Publikováno v:
Poultry Science. 65:616-620
Environmental factors affecting fasting metabolic rate (FMR) were quantified and a short-time recording system was developed. Discontinuous measurements of gas exchange of 1,120 medium weight brown egg layers were taken after 24 and 36 hr of starvati