Network


Latest external collaboration on country level. Dive into details by clicking on the dots.

Hotspot


Dive into the research topics where M. Ulbrich is active.

Publication


Featured researches published by M. Ulbrich.


Archives of Animal Nutrition | 1981

Untersuchungen zum Einfluß verschiedener Faktoren auf Kennzahlen der Pansenprotozoen bei Mastbullen

E. Dierchen; Hoffmann M; E. Boldt; M. Ulbrich

(1982). Untersuchungen zum Einflus verschiedener Faktoren auf Kennzahlen der Pansenprotozoen bei Mastbullen. Archiv fur Tierernaehrung: Vol. 32, No. 3, pp. 209-220.


Archives of Animal Nutrition | 1993

Die verwendung eines hydrolyserückstandes aus der lysinherstellung im strohkonzentratgemisch für mastlämmer

M. Ulbrich; Y. Al‐Bakkour; C. Geißler; R. Goebel; R. Thiele

In einem Wachstumsversuch mit 2 Gruppen zu je 25 Kreuzungslammern und in einem N‐Bilanzversuch mit 5 Lammern wurde die Eignung eines Hydrolyseruckstandes aus der ersten Stufe einer Extraktionsschrothydrolyse zur Lysinerzeugung als Zusatzstoff fur Wiederkauer gepruft. Im Wachstums versuch waren die Lammer zu Versuchsbeginn durchschnittlich 25 kg schwer. Eine Gruppe erhielt industriell hergestelltes Lammermastmischfutter. Die zweite Gruppe bakam ein pelletiertes Strohkonzentratgemisch mit 30 % Stroh‐ und 52 % Gerstenanteil sowie je 5 % Sojaextraktionsschrot, Trockenschnitzel und Hydrolyseruckstand. Das Gemisch enthielt 10,71 MJ ME bzw. 5,51 MJ NEFr und 166 g Rohprotein je kg Trockensubstanz. Im Durchschnitt der 43 Versuchstage nahmen die Lammer der Gruppe 2 um 8 % weniger Trockensubstanz, 26 % weniger Energie und 32 % weniger verdauliches Rohprotein auf als die der Gruppe 1. Die Masttagszunahmen der Gruppe 1 bzw. 2 betrugen 374 g bzw. 241 g. Der Unterschied von 35 % war signifikant. Die Gruppe 2 benotigte j...


Archives of Animal Nutrition | 1987

Einfluß von Emulgatoren und Fettmischungen auf die Verdaulichkeit und den Ansatz von Fettsäuren bei Kälbern

M. Ulbrich; Ramona Eibicht; Geissler C; E. Boldt; Hoffmann M

In a digestibility experiment with 4 X 4 calves the animals received 100 g mixture for calves, 50 g dried green fodder and either 656 g dried whole milk and 164 g dried skim milk (VM) or 656 g dried whole milk and 164 g added fat. The added fat consisted of a mixture of tallow and lard in a 1:1 ratio plus 10% emulgator ES 20 (FE) or 8% ES 20 and 2% soybean lecithin (FL) or 25% lard, 25% tallow, 40% rape/sunflower oil with 10% ES 20 (FO). The apparent digestibility of the fat amounted to 91% in group VM and in groups FE/FL/FO to 66/70/67% resp. The composition of fatty acids and the use of an unsuitable charge of dried skim milk are considered to be the causes of the low apparent digestibility. The apparent digestibility of the fatty acids decreased with their growing chain length. The higher digestibility of the unsaturated fatty acids is largely caused by changes due to bacterial activity in these fatty acids in the intestines and by the influence of metabolically changed faecal fat. The combination of the synthetic emulgator with lecithin did not improve fat digestion but diminished the total fat content in the blood.


Archives of Animal Nutrition | 1978

Untersuchungen zum Blutglukosegehalt bei Lämmern

M. Ulbrich; U. Nienke; N. Fahmy Abdel Hakim

After the oral administration of lactose or starch the blood sugar content was proofed as an indicator for the carbohydrate digestion and resorption of lambs at the age of 7 to 35 days. With increasing age the blood sugar level during fasting decreased, on an average of all lambs, from 65 to 50 mg glucose/100 ml blood. The administration of lactose resulted in an increase of the blood glucose content on all days. In contrast to this, the administration of starch only resulted in an increase of the blood glucose content of lambs that were at least three weeks old.


Archives of Animal Nutrition | 1992

Beziehungen Zwischen Wollertrag Und Cyst(E)Ingehalt Im Blutplasma

A. A. El-Meadawy; M. Ulbrich; Geissler C

Abstract Durch Veroffentlichungen von Williams angeregt, sind Untersuchugen uber die Bezichungen zwischen Wollertrag und Cyst(e)in-Konzentration im Blutplasma von Schafen vorgesehen. Dazu erfolgten zunachst methodische Versuche, bei denen zwei Methoden gut reproduzierbare Analysendaten ergaben. Dabei muste das austauschbare Bindungsverhalten eines Teiles des freien Cystins im Blutplama mit den Plasmaproteinen und dessen Wirkung auf die Analysenergebnisse berucksichtigt werden. Die beiden Methoden und ihre Anwendung werden unter Beachtung der auf die Analysenergebnisse wirkenden Einflusfaktoren beschrieben, und die Schlusfolgerung gezogen, das sie fur den vorgesehenen Zweck geeignet sind. RELATIONS BETWEEN WOOL YIELD AND CYST(E)INE CONCENTRATION IN BLOOD PLASMA. 1. DESCRIPTION OF THE PROBLEM AND ANALYSIS Publications from Williams were the stimulation to study the relations between wool yield and cyst(e)ine concentration in blood plasma. Methodical experiments were carried out and the two methods used each...


Archives of Animal Nutrition | 1991

Zum Nitratgehalt in der Milch

Geissler C; O. Steinhöfel; M. Ulbrich

Analytical possibilities for nitrate determination in milk on the base of photometric methods are discussed. An automated method, similar to Nijhuis u. a. (1979), is proposed using flow stream analyser ADM 300. Natrium nitrate (5 g and 10 g/kg live weight resp.) was given to two dairy cows after morning feeding on the 1st and on the 3rd day of experiment. The increase of nitrate content in the milk was very quick, maximal concentrations after 2 h were found as 5.6 mg/l (animal 1) and 3.2 mg nitrate-N/l (animal 2). But nitrate also disappeared relatively quickly, after 24 h there only values were observed corresponding to normal range of 1 mg/l.


Archives of Animal Nutrition | 1987

Vergleich von Schmalz-Talg-Gemisch und Knochenfett im Verdauungs- und Wachstumsversuch mit Kälbern

M. Ulbrich; E. Boldt; K. Richter; Marei Torzewski

Male calves between 15 and 26 days old and with a live weight between 45 and 46 kg received dried skim milk dissolved in water plus fat concentration from lard--suet mixtures made with a synthetic emulsifier of the type ethoxylated partial ester with and without soybean lecithin supplement. One group received bone fat with an emulsifier as sole fat component. In the course of 9 experiment weeks the calves of the lard--suet group without lecithin reached an average daily weight gain of 710 g, which was not significantly better than the gains of 689 g of the lard--suet group with lecithin and of 674 g of the bone fat group. The calves of the lard--suet group with lecithin did not digest the feed fat significantly better than the calves in the other two groups. The quota of fatty acids in the feed distinctly influenced the composition of the fatty acids in the intestines, the kidneys and the hypodermis. With the example of suet the general relationship between the fatty acid patterns of the feed and body fats are recognizable, with the fatty acids C 16:0, C 18:2 and C 18:3 having a lower and C 16:1, C 18:0 and C 18:1 having a higher quota in the suet than in the feed fat. Due to the application of high amounts of bone fat, vegetable oil or sea animal fat there are deviations from this rule. There is a higher quota of linolenic acid in the suet of the calves than in butter fat but a lower quota than in foreign fat.


Archives of Animal Nutrition | 1986

Harnstoffverwertung Wachsender Lämmer

Hoffmann M; M. Ulbrich; Baumeier A; H.-P. Fix


Archives of Animal Nutrition | 1989

Influence of energy concentration and source on the utilization of feed protein and NPN in lambs. 2. 15N balance and utilization of pure protein and NPN

M. Ulbrich; Bassuny Sm; Geissler C; Hoffmann M


Archives of Animal Nutrition | 1988

Urea utilization in growing lambs. 6. N balance with 15N urea

M. Ulbrich; Nikitin S; Geissler C; Hoffmann M

Collaboration


Dive into the M. Ulbrich's collaboration.

Top Co-Authors

Avatar
Top Co-Authors

Avatar
Top Co-Authors

Avatar
Top Co-Authors

Avatar
Top Co-Authors

Avatar
Top Co-Authors

Avatar
Top Co-Authors

Avatar
Top Co-Authors

Avatar
Top Co-Authors

Avatar
Top Co-Authors

Avatar
Researchain Logo
Decentralizing Knowledge