Zobrazeno 1 - 10
of 96
pro vyhledávání: '"H. Spiekers"'
Publikováno v:
Archives Animal Breeding, Vol 66, Pp 265-273 (2023)
This research project aimed to generate basic data for specifying the trace mineral requirements of Fleckvieh (German Simmental) bulls. Hence, the concentrations of the trace minerals iron (Fe), zinc (Zn), copper (Cu), and manganese (Mn) in the empty
Externí odkaz:
https://doaj.org/article/c654e40f16d146ad86b6b4dc165eef42
Publikováno v:
Journal of Dairy Science, Vol 105, Iss 12, Pp 9738-9750 (2022)
ABSTRACT: Selection for feed efficiency (FE) is a hot topic in dairy cow breeding. Dry matter intake (DMI) and residual energy intake (REI) are mostly discussed as new selection traits. Selection for lower DMI or REI seems to increase FE if other tra
Externí odkaz:
https://doaj.org/article/dae5fe5089364e0fb56acf99ecd5818c
Publikováno v:
Animal, Vol 15, Iss 11, Pp 100366- (2021)
The objective of this study was to evaluate the effect of supplementing a CP-reduced diet with rumen-protected methionine on growth performance of Fleckvieh bulls. A total of 69 bulls (367 ± 25 kg BW) were assigned to three feeding groups (n = 23 pe
Externí odkaz:
https://doaj.org/article/72be2bc806654ff1a29319c56aef6bf5
Publikováno v:
Archives of Animal Nutrition. 75:251-262
It is useful to predict metabolisable energy (ME) concentration based on crude nutrients which can be determined on a laboratory scale to formulate compound feeds for pigs based on ME concentration and to control the declared concentration. In 2008 s
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c989c34cb1cc62693463de6bb703de8b
https://doi.org/10.1080/1745039x.2021.1947066
https://doi.org/10.1080/1745039x.2021.1947066
Publikováno v:
Journal of Dairy Science. 103:10175-10194
A new evaluation scheme to assess the nutritional status of dairy cows on the basis of milk constituents was derived from 7.37 million German records of milk testing. The aim of this work was to validate this new scheme. Two data sets with fertility
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::9e6b96535d8d778ab12bc3c906bd4c2c
https://doi.org/10.3168/jds.2019-17981
https://doi.org/10.3168/jds.2019-17981
Autor:
H. Sauerwein, N. Kraus, B. Kuhla, T. Ettle, C. Urh, E. Stamer, H. Spiekers, Rolf Schmitz, E. Gerster, C. Koch, J. Denißen, I. Harder
Publikováno v:
Domestic Animal Endocrinology. 69:1-12
Dairy cows experience a negative energy balance due to increasing energy demands and insufficient voluntary feed intake in the transition from late pregnancy to early lactation. For supplying sufficient energy toward the conceptus and the mammary gla
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::da154186dcc9cef1cb8a362905cea2b3
https://doi.org/10.1016/j.domaniend.2019.01.001
https://doi.org/10.1016/j.domaniend.2019.01.001
Publikováno v:
Journal of Dairy Science. 102:6672-6678
Dairy cows face metabolic challenges in the transition from late pregnancy to early lactation. The energy demands for the growing fetus and the onset of milk production are increasing but voluntary feed intake often decreases around parturition and c
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::fdc044555a47414457fa135c309fc81a
https://doi.org/10.3168/jds.2019-16248
https://doi.org/10.3168/jds.2019-16248
Publikováno v:
Journal of dairy science. 104(10)
Residual energy intake (REI) is an often-suggested trait for direct selection of dairy cows for feed efficiency. Cows with lower REI seem to be more efficient but are also in a more severe negative energy balance (EB), especially in early lactation.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e7844e463d13ef3fd3858714c6fadaf1
https://pubmed.ncbi.nlm.nih.gov/34334207
https://pubmed.ncbi.nlm.nih.gov/34334207
Autor:
Dirk von Soosten, Jürgen Rehage, Liane Hüther, Ulrich Meyer, Karina Schnabel, Rolf Schmitz, H. Spiekers, Sven Dänicke
Publikováno v:
Archives of Animal Nutrition. 72:458-477
The aim of this study was to assess differences of ruminal pH and rumination activity between the prepartal and postpartal period of cows and to investigate changes of feeding behaviour and ruminal fermentation depending on postpartal rations with sl
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::dacb9795db3196c12fa976c5db12335d
https://doi.org/10.1080/1745039x.2018.1526535
https://doi.org/10.1080/1745039x.2018.1526535
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