Characteristics of dairy farms in the North-Eastern part of Italy: rations, milk yield and nutrients excretion
This survey was aimed to evaluate the characteristics of dairy farms in the North- Eastern part of Po valley in terms of ration composition, milk yield and N and P excretions. Eightynine farms, with Italian Holstein Friesian cows, were selected in order to cover different situations in term of farm...
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| Format: | Article |
| Language: | English |
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Taylor & Francis Group
2010-01-01
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| Series: | Italian Journal of Animal Science |
| Subjects: | |
| Online Access: | http://www.aspajournal.it/index.php/ijas/article/view/429 |
| _version_ | 1819182628620730368 |
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| author | Stefano Schiavon Silvia Miotello Andrea Fracasso Mirko Cattani Franco Tagliapietra Matteo Dal Maso |
| author_facet | Stefano Schiavon Silvia Miotello Andrea Fracasso Mirko Cattani Franco Tagliapietra Matteo Dal Maso |
| author_sort | Stefano Schiavon |
| collection | DOAJ |
| description | This survey was aimed to evaluate the characteristics of dairy farms in the North- Eastern part of Po valley in terms of ration composition, milk yield and N and P excretions. Eightynine farms, with Italian Holstein Friesian cows, were selected in order to cover different situations in term of farm size and milk yield (MY). MY and quality were obtained from the national database of functional controls. Each farm was visited in order to collect information about ingredients and chemical composition of rations used. Farms were classified in four groups differing for dietary crude protein density (LCP<15.3% DM; HCP>15.3% DM) and for MY (LMY<30 kg/d; HMY>30 kg/d). N and P excretions were quantified by following a mass balance approach. Dietary crude protein content (CP) was not correlated to milk yield (MY) and quality. The estimated amounts of N excreted, discounted for 28% of N losses in atmosphere, were 78.5, 78.2, 87.2 and 89.1 kg/cow/year, and P excreted were 20.2, 18.6, 18.7 and 19.8 kg/cow/year for the LCPLMY, LCPHMY, HCPLMY, HCPHMY groups, respectively. On corn silage and cereals based rations, a dietary CP of 14.3% DM can support 31 kg MY/cow/day. |
| first_indexed | 2024-12-22T22:49:09Z |
| format | Article |
| id | doaj.art-188abb40b55b449aac9b095ca3b26c39 |
| institution | Directory Open Access Journal |
| issn | 1594-4077 1828-051X |
| language | English |
| last_indexed | 2024-12-22T22:49:09Z |
| publishDate | 2010-01-01 |
| publisher | Taylor & Francis Group |
| record_format | Article |
| series | Italian Journal of Animal Science |
| spelling | doaj.art-188abb40b55b449aac9b095ca3b26c392022-12-21T18:10:00ZengTaylor & Francis GroupItalian Journal of Animal Science1594-40771828-051X2010-01-0182s29529710.4081/ijas.2009.s2.295Characteristics of dairy farms in the North-Eastern part of Italy: rations, milk yield and nutrients excretionStefano SchiavonSilvia MiotelloAndrea FracassoMirko CattaniFranco TagliapietraMatteo Dal MasoThis survey was aimed to evaluate the characteristics of dairy farms in the North- Eastern part of Po valley in terms of ration composition, milk yield and N and P excretions. Eightynine farms, with Italian Holstein Friesian cows, were selected in order to cover different situations in term of farm size and milk yield (MY). MY and quality were obtained from the national database of functional controls. Each farm was visited in order to collect information about ingredients and chemical composition of rations used. Farms were classified in four groups differing for dietary crude protein density (LCP<15.3% DM; HCP>15.3% DM) and for MY (LMY<30 kg/d; HMY>30 kg/d). N and P excretions were quantified by following a mass balance approach. Dietary crude protein content (CP) was not correlated to milk yield (MY) and quality. The estimated amounts of N excreted, discounted for 28% of N losses in atmosphere, were 78.5, 78.2, 87.2 and 89.1 kg/cow/year, and P excreted were 20.2, 18.6, 18.7 and 19.8 kg/cow/year for the LCPLMY, LCPHMY, HCPLMY, HCPHMY groups, respectively. On corn silage and cereals based rations, a dietary CP of 14.3% DM can support 31 kg MY/cow/day.http://www.aspajournal.it/index.php/ijas/article/view/429Dairy farms, Rations, Milk quality, Milk yield, Nitrogen excretion |
| spellingShingle | Stefano Schiavon Silvia Miotello Andrea Fracasso Mirko Cattani Franco Tagliapietra Matteo Dal Maso Characteristics of dairy farms in the North-Eastern part of Italy: rations, milk yield and nutrients excretion Italian Journal of Animal Science Dairy farms, Rations, Milk quality, Milk yield, Nitrogen excretion |
| title | Characteristics of dairy farms in the North-Eastern part of Italy: rations, milk yield and nutrients excretion |
| title_full | Characteristics of dairy farms in the North-Eastern part of Italy: rations, milk yield and nutrients excretion |
| title_fullStr | Characteristics of dairy farms in the North-Eastern part of Italy: rations, milk yield and nutrients excretion |
| title_full_unstemmed | Characteristics of dairy farms in the North-Eastern part of Italy: rations, milk yield and nutrients excretion |
| title_short | Characteristics of dairy farms in the North-Eastern part of Italy: rations, milk yield and nutrients excretion |
| title_sort | characteristics of dairy farms in the north eastern part of italy rations milk yield and nutrients excretion |
| topic | Dairy farms, Rations, Milk quality, Milk yield, Nitrogen excretion |
| url | http://www.aspajournal.it/index.php/ijas/article/view/429 |
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