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Publication type: Baccalaureate Thesis

Year: 2013

Author(s): Küsters, Julienne

Title: Der Gehalt von Mengen- und Spurenelementen im Pferdeheu und dessen Beitrag zur Bedarfsdeckung in der Pferdeernährung.

Other title: The content of minerals and micronutrients in hay and its contribution to covering needs in horsefeeding - a comparison of the provinces North Rhine-Westphalia and Berlin-Brandenburg

Source: Bakkalaureatsarbeit, Vet. Med. Univ. Wien, pp. 65.


Advisor(s):

Zentek Jürgen

Reviewer(s):
Iben Christine

Vetmed Research Units:
Institute of Animal Nutrition and Functional Plant Compounds


Graduation date: 16.08.13


Abstract:
In the context of this Bachelor Thesis twenty samples of hay from the German provinces North Rhine-Westphalia (NRW) and Berlin-Brandenburg (BB), respectively, were collected and analyzed regarding their content of the micronutrients calcium, phosphor, sodium, potassium, magnesium as well as zinc, copper, iron, manganese and selenium. The analysis as well as the organoleptic test revealed a number of differences between the said two regions. On average, the samples from NRW contained higher feed and hygienic values, which is due to the time of harvest as in NRW hay is harvested earlier than in BB. The earlier the harvest, the higher the percentage of sheets, which are the carriers of the main share of micronutrients. In the course of the analyses of micronutrients, the samples of NRW consistently contained larger amounts. The sole exception is copper. The statistics only revealed significant differences between the regions regarding sodium, potassium and selenium. In the comparison between different growth levels during the first and the second harvests, respectively, the study shows that the contents of micronutrients are generally higher in the second harvest. Furthermore the samples were divided according to their time of harvesting, to show the trend during vegetation. It became apparent that the content of micronutrients has a decreasing tendency, which strongly correlated with the main content of micronutrients in the sheets, as in the late stadium of vegetation there are fewer sheets than at its beginning. The sole exception was iron as its content has a rising tendency. Moreover, the comparison of both states in terms of the vegetation showed partial differences. With regard to manuring, only slight differences appeared. There are different ranges between samples from manured grassed areas and not manured grassed areas in both regions. In addition, the samples were tested as to whether they contained sufficient micronutrients to meet the requirements of horses with basic needs as well as of lactating mares. This comparison illustrated that generally the daily ration of hay is not able to fulfill the horse’s need of micronutrients, and that feeding supplements is required. The analysis of micronutrients in hay and the consequent juxtaposition of NRW and BB revealed that, considering several factors, there are some differences between the two regions. However, the differences do not have statistical significance concerning each item.


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