Herbage production and live weight gain in dairy heifers grazing forest habitats in Norway

Autor:	H. S. Hansen, U.-B. B⊘e, H. Okkenhaug
Rok vydání:	2009
Předmět:	geography Biomass (ecology) geography.geographical_feature_category Bilberry Peat Wetland Biology Food Animals Agronomy Grazing medicine Animal Science and Zoology medicine.symptom Weight gain Bog Dairy cattle
Zdroj:	Acta Agriculturae Scandinavica, Section A - Animal Science. 59:161-166
ISSN:	1651-1972 0906-4702
DOI:	10.1080/09064700903302858
Popis:	We examined the herbage production of different vegetation types and the live weight gain of dairy heifers grazing forest habitats over three consecutive years. Thirty-five heifers were grazing at high-grazing intensity (1 animal/ha) and 18 heifers at low-grazing intensity (0.5 animal/ha) in a ca. 15-year-old spruce forest with the vegetation types: bilberry spruce forest (57%); peat bogs (25%); and meadow spruce forest (18%). The herbage production was on average for all years highest in meadow spruce forest (2001 kg DM/ha), while it was similar in bilberry spruce forest and peat bogs (629 and 536 kg DM/ha, respectively). The average weight gain of the heifers was 509 g/d, with means ranging from 385 to 653 g/d for different years and grazing intensities. We conclude that estimates of herbage production were improved when the vegetation types of the grazing areas were taken into account.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::d2adaef9c50032f6ec475c0f20c9543a https://doi.org/10.1080/09064700903302858 Zobrazit plný text záznamu Plný text ve formátu PDF Plný text ve formátu HTML
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