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Integrazione energetica e qualita’ del latte in area Bitto in due alpeggi della provincia di Sondrio
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Il momento giusto per la lotta alla fasciolosi epatica dei bovini
No full textStudies on 2 farms in Como province, Italy, that moved their herds to mountain pastures for the summer showed that a mean infestation of 30-50 liver flukes resulted in a 10% loss in milk production, a prolongation of the parturition to conception interval of about 13 days, and an increase of 0.75 services per conception. Animals at risk should be monitored by ELISA tests on milk and faecal examination; treatment is with a fasciolicide (albendazole)
Milk production, feeding systems and environmental impact of dairy cattle farming in Alpine areas: results of a field study
Full text linkIntensification of milk production occurs even in areas traditionally characterized by low-intensive farming systems like mountain areas, leading to environmental concern. The aim of this study was to analyze management and feeding systems in a sample of 31 dairy farms in a mountain area of Lombardy (Valtellina) and their effects on milk production and environmental sustainability. In 2006 daily milk sold was 17.5±5.6 kg/cow on average and daily DMI was 19.4±1.3 kg/cow, with a high forages content (65.8±9.2% DM). Rations were quite energetically balanced (+0.09±17.6 MJ/d of ME). Rations higher in starch and lower in NDF resulted in higher milk yields but significantly compromised farm self-sufficiency (which was 62.9±16.8% DM on average). Average Metabolizable Protein balance was negative (-280±203 g/d of MP), mainly due to the low CP content of diets (13.5±1.5% DM). When CP content increased, N manure and N excreted in urine increased (P<0.05 and P<0.01 respectively), probably due to insufficient energy intake which is partly caused by the scarce quality of forages. An improvement in forages quality could increase ME and MP contents of diets without compromising farm self-sufficiency
Bilanci aziendali dell’azoto e del fosforo di un campione di allevamenti bovini della bassa Valtellina e Valchiavenna
No full textRelazione tra integrazione alimentare e qualità del latte in due alpeggi in area Bitto DOP
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Sostenibilità dell’allevamento bovino da latte nel fondovalle alpino lombardo: aspetti economici ed ambientali
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