Institute For Landtechnik Und Tierhaltung

Grub, Germany

Institute For Landtechnik Und Tierhaltung

Grub, Germany
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Maier S.,Institute For Landtechnik Und Tierhaltung | Fiedler A.,Tierarztpraxis in Munich | Maierl J.,Ludwig Maximilians University of Munich | Haidn B.,Institute For Landtechnik Und Tierhaltung
Tierarztliche Praxis Ausgabe G: Grosstiere - Nutztiere | Year: 2013

Objective: Only limited scientific information on the efficiency of claw cleaning systems for dairy cows is currently available. For this reason, this investigation aimed to test the devio AG's claw hygiene system regarding its cleaning effect as well as its impact on the cow traffic and the quality of its washing water. Material and methods: During the first of two investigative phases of this controlled study, main water was used to clean the claws, while in the second phase a biozide was additionally applied. Every 4 weeks the hind claws of approximately 55 dairy cows (German Fleckvieh breed) were evaluated and their degree of soiling classified into four categories. In addition to the system's cleaning effect, its effect on cow traffic was investigated using video recordings and the quality of the recycled washing water was tested using bacteriological sampling. Results: In the second investigation phase, claw cleanliness in the treatment group was significantly higher than in the control group. However, there was no significant difference between the two groups during the first investigation phase. The video analysis showed, that after a short period of adaptation, there was undisturbed cow traffic. Within one week of installing the claw hygiene system, the length of stay in the system increased from a mean of 23 s to 32 s and the time the cows spent waiting in front of the system was reduced from a mean of 3 min 51 s to 2 min 20 s. Water analysis revealed an increasing bacterial count from initially 1.2 × 106 to 7.3 × 107 CFU/ml. Conclusions: The undisturbed cow traffic allows the easy integration of the claw cleaning system into a free-stall barn. The improvement of claw cleanliness can make a positive contribution to claw hygiene. However, the increasing bacterial contamination of the washing water gives cause for concern in terms of infections being passed between cows when using this system. © Schattauer 2013.


Icken W.,Lohmann Tierzucht GmbH | Cavero D.,Lohmann Tierzucht GmbH | Thurner S.,Institute For Landtechnik Und Tierhaltung | Schmutz M.,Lohmann Tierzucht GmbH | And 2 more authors.
Archiv fur Geflugelkunde | Year: 2011

From field reports and scientific papers, it is known that sunlight can have an effect on the egg shell colour of brown layers. Therefore, on the basis of up to 243 brown layers with individual recordings, the relation between the time spent in a winter garden and egg shell colour were analysed in this study. The effect daylight was represented by the average time which each single hen spent in a winter garden between 10 a.m. and 3 p.m. per day. The number of days with shell colour recordings range between 11 and 15 days per flock. The hens of flocks 1 and 2 were tested at an age of 25 to 28 weeks, whereas the hens of flock 3 were already 47 weeks old. During data recording, the season was the same for all hens. The average duration of stay per hen and day varied for each flock between one and a half to nearly two and a half hours. For the hens of flock 1, which when compared to the others, spent the shortest time span outside, the eggs had the darkest average shell colour index. In regard to this relationship, more detailed information was expected from a regression analysis. However, widely spread dots, with a very low negative tendency for one of the tested flocks did not give the desired results. A highly significant influence of the duration in the winter garden on the egg shell colour index was also only estimated for two of the three tested flocks. A negative genetic correlation of r g = -0.54, confirms the assumingly negative relationship. However, it is not possible to emphasise that in general daylight makes egg shell paler. © Verlag Eugen Ulmer, Stuttgart.


Neumaier G.,Institute For Landtechnik Und Tierhaltung | Frohlich G.,Institute For Landtechnik Und Tierhaltung | Bernhardt H.,TU Munich
Landtechnik | Year: 2014

The state of the art equipment for harvesting valerian roots is not efficient enough. Therefore, the aim of this study is to create a method for careful lifting and successful cleaning of the roots. For that purpose, a new cleaning system "rotation" is developed and compared with two other existing systems in a field trial with regard to the parameters "root mass loss", "ingredients loss" and "cleaning intensity". No differences regarding the ingredients are found, but there are significant differences with respect to the root mass loss and the cleaning efficiency. However, taking all results into consideration, all three systems are suited for agricultural practice.


Neumaier G.,Institute For Landtechnik Und Tierhaltung | Frohlich G.,Institute For Landtechnik Und Tierhaltung
Zeitschrift fur Arznei- und Gewurzpflanzen | Year: 2014

The state of the art equipment for harvesting valerian roots is not efficient enough. Therefore, the aim of this study is to create a harvester for careful lifting and successful cleaning of the roots. For that purpose, a new cleaning system "rotation" is developed and compared to two other existing systems in a field trial with regard to the parameters "root mass loss", "ingredients loss" and "cleaning intensity". No differences regarding the ingredients are found, but there are significant differences with respect to the root mass loss and the cleaning efficiency. However, taking all results into consideration, all three systems are suited for agricultural practice. According to the particularly advantageous features of these three cleaning systems and based on the trial outcomes a new efficient harvester is elaborated.


Adikaram K.K.L.B.,TU Munich | Adikaram K.K.L.B.,Institute For Landtechnik Und Tierhaltung | Adikaram K.K.L.B.,Ruhuna University | Hussein M.A.,TU Munich | And 2 more authors.
Mathematical Problems in Engineering | Year: 2014

With the increasing demand for online/inline data processing efficient Fourier analysis becomes more and more relevant. Due to the fact that the bit reversal process requires considerable processing time of the Fast Fourier Transform (FFT) algorithm, it is vital to optimize the bit reversal algorithm (BRA). This paper is to introduce an efficient BRA with multiple memory structures. In 2009, Elster showed the relation between the first and the second halves of the bit reversal permutation (BRP) and stated that it may cause serious impact on cache performance of the computer, if implemented. We found exceptions, especially when the said index mapping was implemented with multiple one-dimensional memory structures instead of multidimensional or one-dimensional memory structure. Also we found a new index mapping, even after the recursive splitting of BRP into equal sized slots. The four-array and the four-vector versions of BRA with new index mapping reported 34% and 16% improvement in performance in relation to similar versions of Linear BRA of Elster which uses single one-dimensional memory structure. © 2014 K. K. L. B. Adikaram et al.


Adikaram K.K.L.B.,TU Munich | Adikaram K.K.L.B.,Institute For Landtechnik Und Tierhaltung | Adikaram K.K.L.B.,Ruhuna University | Hussein M.A.,TU Munich | And 2 more authors.
Scientific World Journal | Year: 2014

We introduce a new nonparametric outlier detection method for linear series, which requires no missing or removed data imputation. For an arithmetic progression (a series without outliers) with n elements, the ratio (R) of the sum of the minimum and the maximum elements and the sum of all elements is always 2 / n: (0,1 ]. R ≠ 2 / n always implies the existence of outliers. Usually, R < 2 / n implies that the minimum is an outlier, and R > 2 / n implies that the maximum is an outlier. Based upon this, we derived a new method for identifying significant and nonsignificant outliers, separately. Two different techniques were used to manage missing data and removed outliers: (1) recalculate the terms after (or before) the removed or missing element while maintaining the initial angle in relation to a certain point or (2) transform data into a constant value, which is not affected by missing or removed elements. With a reference element, which was not an outlier, the method detected all outliers from data sets with 6 to 1000 elements containing 50% outliers which deviated by a factor of ± 1.0 e - 2 to ± 1.0 e + 2 from the correct value. © 2014 K. K. L. B. Adikaram et al.


Jais C.,Institute For Landtechnik Und Tierhaltung | Oppermann P.,Institute For Landtechnik Und Tierhaltung | Schwanfelder J.,Versuchs und Fachzentrum der LfL in Schwarzenau tatig
Landtechnik | Year: 2013

During a two year lasting study the floor in the lying area in a pen for 30-40 pregnant sows was fitted with rubber mats, while in an identically designed control pen, the lying area was equipped with slatted (with holes) concrete floor. The activity area of both pens consisted of slatted concrete floor. To evaluate the effect of rubber mats on the sows, claws and joints were judged regularly. Sows entered in the study with their second pregnancy and stayed, depending on their lifetime and their time of entering, up to five pregnancies in the study. Lateral abrasions of claw's horn were significantly reduced by rubber mats in the sow's lying area. The other criteria, alterations of the ball, injuries of the skin above of the claws, fractures of the claw's horn, comparison of the length of the inner and outer claw, length of dewclaw, alterations of the joints and motion were not influenced by the type of floor in the lying area.


Jais C.,Institute For Landtechnik Und Tierhaltung | Oppermann P.,Institute For Landtechnik Und Tierhaltung | Schwanfelder J.,Institute For Landtechnik Und Tierhaltung | Ebert J.,Institute For Landtechnik Und Tierhaltung
Landtechnik | Year: 2013

During a two year lasting study the floor in the lying area in a pen for 30-40 pregnant sows was fitted with rubber mats, while in an identically designed control pen, the lying area was equipped with slatted concrete floor with round holes. The activity area of both pens consisted of slatted concrete floor. To evaluate the effect of rubber mats on the sows, claws and joints were judged regularly. Sows entered in the study with their second pregnancy and stayed, depending on their lifetime and their time of entering, up to five pregnancies in the study. For the analysis of claw's length and growth the data of 341 pregnancies of 137 sows could be used. For none of the two criteria a difference between experimental and control pen could be identified, that would indicate a reduced abrasion of claws caused by rubber mats in the lying area.


Heinrich A.,Institute For Landtechnik Und Tierhaltung | Bock S.,Institute For Landtechnik Und Tierhaltung | Thurner S.,Institute For Landtechnik Und Tierhaltung | Wendl G.,Institute For Landtechnik Und Tierhaltung | And 2 more authors.
Landtechnik | Year: 2013

To improve the breeding of laying hens for alternative housing systems, the aim of the present study was, to record the oviposition of individual hens in group housing systems with family nest boxes by the change of body weight caused by the oviposition. Therefore, a weighing perch was developed. 3/4 of the ovipositions were found, but major changes in body weight were also measured in nest visits without oviposition. It is possible to detect the oviposition of individual hens with the weighing perch in group housing systems with family nest boxes, but the recognition rates have to be improved.


PubMed | Ruhuna University, TU Munich and Institute For Landtechnik Und Tierhaltung
Type: | Journal: TheScientificWorldJournal | Year: 2014

We introduce a new nonparametric outlier detection method for linear series, which requires no missing or removed data imputation. For an arithmetic progression (a series without outliers) with n elements, the ratio (R) of the sum of the minimum and the maximum elements and the sum of all elements is always 2/n : (0,1]. R 2/n always implies the existence of outliers. Usually, R < 2/n implies that the minimum is an outlier, and R > 2/n implies that the maximum is an outlier. Based upon this, we derived a new method for identifying significant and nonsignificant outliers, separately. Two different techniques were used to manage missing data and removed outliers: (1) recalculate the terms after (or before) the removed or missing element while maintaining the initial angle in relation to a certain point or (2) transform data into a constant value, which is not affected by missing or removed elements. With a reference element, which was not an outlier, the method detected all outliers from data sets with 6 to 1000 elements containing 50% outliers which deviated by a factor of 1.0e - 2 to 1.0e + 2 from the correct value.

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