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Estimation of nitrogen volatilisation in the bedded-pack of dairy cow barns

Atzori, Alberto Stanislao and Boe, Roberta and Carta, Patrizia and Fenu, Antonio and Spanu, Gesumino and Francesconi, Ana Helena Dias and Cannas, Antonello (2009) Estimation of nitrogen volatilisation in the bedded-pack of dairy cow barns. Italian Journal of Animal Science, Vol. 8 (Suppl. 2), p. 253-255. eISSN 1828-051X. Article.

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DOI: 10.4081/ijas.2009.s2.253

Abstract

The objective of the study was to measure N volatilisation (NVOL) from bedded-pack dairy cow barns. Feed intake, milk production, bedding material used and meteorological variables were monitored in 3 dairy farms near the town of Arborea (39°46’26” N, 08°34’53” E, 7 m a.s.l.) during one month for each season from summer 2007 to spring 2008. NVOL was measured in the interval between excretion and removal of bedded-packs from barn floors. NVOL was measured using the N (nitrogen) to P (phosphorus) ratio marker method, considering P as an internal non-volatile marker in milk and manure. Nitrogen and P excretion was estimated by nutrient balance as intake minus N and P excreted in milk. NVOL coefficient and bad-pack temperature were almost constant among seasons. The annual mean NVOL in bedded-pack barns was equal to 38.8% of excreted N. Accounting also for the NVOL that occurred in the concrete floor of the feeding and walking areas of the barns, NVOL was 40.7% of N excreted.

Item Type:Article
ID Code:5749
Status:Published
Refereed:Yes
Uncontrolled Keywords:Bed-pack, nitrogen volatilisation, dairy cow
Subjects:Area 07 - Scienze agrarie e veterinarie > AGR/18 Nutrizione e alimentazione animale
Divisions:001 Università di Sassari > 01 Dipartimenti > Scienze zootecniche
Publisher:Avenue media on behalf of Scientific Association of Animal Production (ASPA)
eISSN:1828-051X
Publisher Policy:Depositato per gentile concessione dell'ASPA
Additional Information:Relazione presentata al 18. Congresso nazionale ASPA, Palermo, 9-12 giugno 2009.
Deposited On:16 Mar 2011 09:48

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