Der Einfluß des Vegetationsstadiums auf den Mengen- und Spurenelementgehalt dreier Grasarten

Kirchgeßner, M.; Merz, G.; Oelschläger, W.

doi:10.1080/17450396009442117

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U 196141

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1965

2000

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Cited by 3 publications

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“…I n order to find some of the reasons for these variations we examined the effects of botanical composition and of time and method of harvesting on the trace element content of meadow grass (Kirchgessner, 1955(Kirchgessner, , 1957a(Kirchgessner, , 1957b; Wohlbier & Kirchgessner, 1 9 5 7~; Kirchgessner, Merz & Oelschlager, 1960).…”

Section: U 19614mentioning

confidence: 99%

Availability of minerals in foods of plant origin

Kirchgeßner

1965

Proc. Nutr. Soc.

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Section: U 19614mentioning

confidence: 99%

Availability of minerals in foods of plant origin

Kirchgeßner

1965

Proc. Nutr. Soc.

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1977

Trace Element Contamination of the Environment

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Cobalt requirement of beef cattle — feed intake and growth at different levels of cobalt supply

Schwarz

Kirchgeßner

Stangl

2000

Animal Physiology Nutrition

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Summary In a study using a total of 36 German Simmental beef bulls weighing between 236 kg and about 620 kg the question of what constitutes an adequate Co supply was investigated with reference to the performance criteria growth, feed intake, energy intake, nutrient intake and carcass criteria. The bulls received a diet of corn silage ad libitum and 2.5 kg concentrate for a period of 280 days. Ten rations (R) with graduated Co supplements were fed with mean concentrations of 0.07 (R1), 0.09 (R2), 0.11 (R3), 0.15 (R4), 0.18 (R5), 0.26 (R6), 0.33 (R7), 0.42 (R8), 0.59 (R9) and 0.69 (R10) mg Co per kg dry matter (DM) intake. The Co supplement was added as CoSO47H2O. The diets with no or low Co supplementation produced either distinctly lower daily gains of 1045g (R1) and 1130g (R2) or lower daily gains of about 1260 g (R3, R4) than rations R5–R10, where daily gains averaged 1340 g. The mean daily feed intake per animal was also significantly or marginally affected with values of 6.0 kg DM (R1) rising to 7.7 kg DM (R2–R4) versus 7.9 kg DM on average (R5–R10). Calculations using the broken line model and the quadratic model show that the optimal Co supply for maximum growth is 0.12 mg/kg dietary DM and for maximum feed intake, 0.16–0.18 mg Co/kg dietary DM. After taking further biochemical criteria into account (Stangl et al. 2000), a level of 0.20 mg/kg dietary DM is recommended as an adequate Co supply for growing cattle.

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Der Einfluß des Vegetationsstadiums auf den Mengen- und Spurenelementgehalt dreier Grasarten

Cited by 3 publications

References 21 publications

Availability of minerals in foods of plant origin

Availability of minerals in foods of plant origin

References

Cobalt requirement of beef cattle — feed intake and growth at different levels of cobalt supply

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