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Exploitation of a natural pasture by wild horses: comparison between nutritive characteristics of the land and the nutrient requirements of the herds over a 2-year period

Published online by Cambridge University Press:  01 March 2008

N. Miraglia ,
M. Costantini ,
M. Polidori ,
G. Meineri  and
P. G. Peiretti
N. Miraglia*
Affiliation:
SAVA Department, Molise University, Via De Sanctis, 86100 Campobasso, Italy
M. Costantini
Affiliation:
SAVA Department, Molise University, Via De Sanctis, 86100 Campobasso, Italy
M. Polidori
Affiliation:
SAVA Department, Molise University, Via De Sanctis, 86100 Campobasso, Italy
G. Meineri
Affiliation:
DIPAEE Department, Torino University, Via L. Da Vinci 44, 10095 Grugliasco (TO), Italy
P. G. Peiretti
Affiliation:
ISPA, National Research Council, Via L. Da Vinci 44, 10095 Grugliasco (TO), Italy
*
E-mail: [email protected]
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Abstract

In the Molise region (Italy), some autochthonous populations are still bred and, between them, some wild horses named ‘Pentro horses.’ The breeding area is a natural pasture. It is 2200 ha extended including a broad plane surrounded by wooden hills. The aim of this research was to determine the nutritional characteristics of this area over a 2-year period to improve the management of the herd and to define the stocking rate in relation to the forage production in terms of production and quality. The forage samples were collected over two successive years during the grazing period (May to October) from five experimental areas and analysed for dry matter (DM), organic matter (OM), crude protein (CP), crude fibre (CF), neutral-detergent fibre (NDF), acid-detergent fibre (ADF), acid-detergent lignin (ADL) and gross energy (GE). Horse feed units (HFU) and horse-digestible crude protein (HDCP) were also predicted. Data were analysed with a one-way ANOVA test using month and area as factors. The DM, HFU and HDCP total production was determined to be compared with the total nutrient requirements of the herds from May to October. The results show that seasonal and yearly climatic variations significantly affect chemical composition and nutritive value of the pasture. The parameters most influenced were DM, CP, ADF and to a less extent NDF, while OM, ADL and GE show smaller differences during the observed period. The results show a low production per ha; nevertheless, because of the low stocking rate (0.3 to 0.6 head per ha), nutrient production meets the nutrient requirements of the horses regarding DM and energy. The differences among the areas have to be ascribed to the different botanical compositions and to the different draining capacity of the soil, and also in this case the greatest variations are for DM, CP and ADF.

Keywords

chemical compositionhorsesnatural pastureseasonal variations
Type
Full Paper
Information
animal , Volume 2 , Issue 3 , March 2008 , pp. 410 - 418
Copyright
Copyright © The Animal Consortium 2008

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