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Abstract

In plasma of control, untreated calves, physiological concentrations (ng/ml) of oestrogens were: total oestrogens 0.084 ± 0.037, free oestradiol-17β 0.011 ± 0.012, conjugated oestradiol-17β 0.038 ± 0.029. In urine, total oestrogen concentration was 1.315 ± 1.122 ng/ml. Oestradiol-17β was...

Author(s)
Schopper, D.; Hoffmann, B.; Karg, H.; Berende, P. L. M.; Weerden, E. J. van; Wal, P. van der
Citation
Zentralblatt für Veterinärmedizin, A, 1983, 30, 8, pp 585-600
Abstract

A review, dealing with the effects of anabolic sex hormones and β-agonists on growth and meat quality in cattle and the effects of somatotropin on growth and dairy performance.

Author(s)
Karg, H.; Meyer, H. H. D.; Schams, D.
Citation
Monatshefte für Veterinärmedizin, 1992, 47, 3, pp 113-118
Abstract

Blood samples, obtained from 35 German Brown heifers during the oestrous cycle, shortly after insemination, and at various intervals from day 9 to 35 of pregnancy, were analysed. The frequency of gonadotropin and progesterone release was similar in pregnant and cycling ♀♀, whereas the amplitude of...

Author(s)
Schallenberger, E.; Meyer, H. H. D.; Schams, D.; Karg, H.
Citation
Wiener Tierärztliche Monatsschrift, 1989, 76, 1, pp 21-26
Abstract

From 10 to 38 wk post partum, 48 German Simmental cows were treated with 500 mg bovine somatotropin or a placebo at fortnightly intervals, and 2 blood samples were obtained from each cow with an interval of 1 wk between samples (group 1) or on successive days (group 2). In the 2 groups, an...

Author(s)
Matzke, P.; Schams, D.; Hollwich, W.; Karg, H.
Citation
Tierzüchter, 1991, 43, 5, pp 208-209
Abstract

Anabolic steroids influencing sex hormones, β-agonists and growth hormones are currently at the centre of discussions on meat and milk production. Biologically active residues can result from illegal treatment only in exceptional circumstances, and it is considered that control measures,...

Author(s)
Karg, H.
Citation
Monatsschrift für Kinderheilkunde, 1990, 138, 1, pp 2-5
Abstract

Blood samples were collected from 42 wk before parturition to 1 wk after parturition from 7 cows and 5 heifers and during lactation from 4 non-pregnant cows. The blood concentration of IGF-I peaked between 10 and 5 wk before parturition for cows and between 18 and 10 wk for heifers, and there was a ...

Author(s)
Theyerl-Abele, M.; Meyer, H. D. D.; Schams, D.; Karg, H.
Citation
Deutsche Tierärztliche Wochenschrift, 1990, 97, 10, pp 382-385
Abstract

The milk production-enhancing property of bovine somatotropin (GH) can be explained as a partitioning effect (fat mobilization) in favour of the energy balance and as a stimulation of the anabolic insulin-like growth factor-1. Concerns on animal health are not GH-specific but comparable with those...

Author(s)
Karg, H.; Schams, D.
Citation
Wiener Tierärztliche Monatsschrift, 1990, 77, 11, pp 348-350, 352-354
Abstract

A review of the use of steroid hormones and somatotropin as growth promoters in cattle.

Author(s)
Karg, H.
Citation
Schriftenreihe, Verband Deutscher Landwirtschaftlicher Untersuchungs- und Forschungsanstalten, Reihe Kongressberichte, 1986, 20, pp 29-47
Abstract

A review of work, mainly on cattle and pigs, of the effects of, and interactions among, somatotropin, insulin-like growth factors I and II and insulin on growth and lactation.

Author(s)
Karg, H.
Citation
Bayerisches Landwirtschaftliches Jahrbuch, 1988, 65, Suppl. 1, pp 167-175
Abstract

A review, dealing with the effects of somatotropin, insulin, insulin-like grown factor, androgens, oestrogens and trenbolone on the growth of lean, fat and bone in cattle and pigs, and the effects of bovine somatotropin on milk yield. Possibilities of using recombinant somatotropin are discussed,...

Author(s)
Karg, H.
Citation
Bayerisches Landwirtschaftliches Jahrbuch, 1988, 65, 4, pp 501-512

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