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| Willems, H.; Kreuzer, M.; Leiber, F.. |
| A total of 110 lambs of the breeds Engadine Sheep and Valaisian Black Nose Sheep were fattened on one lowland and three different alpine pasture types. The experiment was conducted in two consecutive years and lasted for 9 weeks of grazing in each year. Immediately afterwards, the lambs were slaughtered. Perirenal adipose tissue and the Longissimus dorsi muscle were analysed for fatty acid composition. The lambs on the lowland pasture had the lowest proportions of linoleic and α-linolenic acid in the lipid fraction of these tissues. Additionally, there was a clear differentiation in these proportions when lambs grazed different alpine vegetation types. This was related to the content of phenolic compounds rather than the fatty acid contents of the swards,... |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Feeding and growth; Sheep and goats. |
| Ano: 2013 |
URL: http://orgprints.org/25179/1/Willems-etal-2013-FAOMP.pdf |
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| Kohler, M.; Leiber, F.; Willems, H.; Merbold, L.; Liesegang, A.. |
| This study investigated the influence of alpine grazing on vitamin D (vitD) and bone metabolism in sheep and goats. Two groups of five adult lactating East Friesian milk sheep and Saanen dairy goats were kept on pastures at 2000 to 2600 m a.s.l. (SA: sheep alpine; GA: goats alpine) and 400 m a.s.l. (SL: sheep lowland; GL: goats lowland). The animals were milked twice daily and the milk yield was measured. Blood, milk, skin and forage samples were collected and the left metatarsi were measured with peripheral quantitative computed tomography. The relative humidity and air temperature were recorded and the ultraviolet B (UVB) radiation was measured with a solar meter at both research stations. In addition, animals from the alpine group were equipped with a... |
| Tipo: Journal paper |
Palavras-chave: Feeding and growth; Sheep and goats. |
| Ano: 2013 |
URL: http://orgprints.org/24491/1/Kohleretal-2013-JAnimSci-91-p5259-5268.pdf |
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| Willems, H.; Kreuzer, M.; Leiber, Florian. |
| The special quality of foods from alpine grazing systems concerning their fatty acid (FA)composition is well established. However, the contribution of different specific vegetationtypes and the animal’s genotype to this alpine effect is still unclear. In the present study,the FA profiles of muscle and adipose tissue lipids were determined in lambs that hadgrazed either an intensively managed lowland pasture or one of three characteristic alpinevegetation types differing in plant species number and composition, forage quality andamount, and composition of phenolic compounds and FA. On each vegetation type and intwo subsequent years, two groups of lambs (seven Engadine sheep, ES; and seven ValaisianBlack Nose sheep, VS) grazed for 9 weeks and were... |
| Tipo: Journal paper |
Palavras-chave: Feeding and growth; Sheep and goats. |
| Ano: 2014 |
URL: http://orgprints.org/25010/1/Willems-etal-2014-SmallRumiResearch-116-p153-164.pdf |
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| Willems, H.; Kreuzer, M.; Leiber, F.. |
| Lambs of two Swiss mountain breeds, Engadine Sheep (ES; n=55) and Valaisian Black Nose Sheep (VS; n=55), were fattened in 2010 and 2011 on one lowland and three alpine pastures. Groups of six to seven lambs per breed were allocated to pastures of a size allowing ad libitum intake on the following four vegetation types: (i) species-poor and nutrient-rich lowland (400 m a.s.l.) ryegrass–clover ley on flat terrain (‘lowland-rich’); (ii) alpine, species-rich and nutrient-rich vegetation type on a flat terrain (1950 m; ‘alpine-rich’); (iii) alpine, species-rich vegetation type, moderate in nutrients on steep terrain (2150 m; ‘alpine-moderate’); and (iv) alpine, species-rich and nutrient-poor vegetation type on steep terrain (2150 m; ‘alpine-poor’). Lambs were... |
| Tipo: Journal paper |
Palavras-chave: Feeding and growth; Sheep and goats. |
| Ano: 2013 |
URL: http://orgprints.org/26530/1/Willems-etal-2013-LivSci-vol151-p80-91.pdf |
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