tailieunhanh - Milk Production on Smallholder Dairy Cattle Farms in Southern Vietnam

Spatial analysis by way of weighted overlay was used to determine possible locations where the Boran cattle may strive. By considering elevation and annual rainfall data within the Dry Kolla agro-ecological zone of Ethiopia, one could extract a refined suitability map for the Boran. Within the Dry Kolla ‘mask’, one would extract the two variables or layers (elevation and rainfall) and conduct a simple statistical description by which the means and standard deviations are determined. Classes of suitability are assigned around the mean values according to their standard deviation. A weighted overlay of the two layers defines the final suitability. | Milk Production on Smallholder Dairy Cattle Farms in Southern Vietnam Management in relation to udder health Vo Lam Faculty of Veterinary Medicine and Animal Science Department of Animal Nutrition and Management Uppsala Doctoral Thesis Swedish University of Agricultural Sciences Uppsala 201 1 Acta Universitatis Agriculturae Sueciae 2011 37 Cover Milking on Smallholder Dairy Farms in Southern Vietnam photo Vo Lam 2006 ISSN 1652-6880 ISBN 978-91-576-7582-8 2011 Vo Lam Uppsala Print SLU Service Repro Uppsala 2011 Milk Production on Smallholder Dairy Cattle Farms in Southern Vietnam Abstract Dairy production is a rather new and not a traditional system in Vietnam. It is mainly based on smallholder dairy farms. The general aim of the studies in this thesis was to improve milk production on smallholder dairy farms in Southern Vietnam and also to create a foundation that could be used in the advisory service or and in further research for better milking management routines. Studies were done to cover the specific objectives of this thesis. The studies were designed to identify the problems for dairy production on smallholder dairy farms to investigate which are the management factors that influenced milk somatic cell count SCC in lactating cows identify the prevalence of subclinical mastitis based on SCC and to study the protein degradation caused by Streptococcus Str. agalactiae. The survey study indicated that the majority of the farmers kept between 2 to 17 cows mean 12 . The main breed of dairy cow was Holstein Friesian HF crosses. This HF cows produced about 16 kg day cow. Around 35 of the farms provided fresh water ad libitum for the cows while 51 provided less than 30 L of water per cow per day. Moreover milk SCC was high 1 300 000 cells mL milk in many of the studied farms. The second study found that limited to drinking water significantly increased herd SCC. Str. agalactiae was found to be a predominant species in infected udders. Further investigation showed .

• Nông nghiệp
• non adherent sometimes
• assess adherence
• dispense and review
• Biotechnological Aspects
• Utilisation of Fusel
• Biolubricant Production
• AISI 304 Stainless
• Immersed in Mixtures
• Fungal Suspensions
• Sodium Caseinate
• Carboxymethylcellulose
• Electrochemical Behaviour
• Journal of Chemistry
• Saturated palm fatty acid distillate
• Polyhydric alcohol
• D optimal design
• Lubrication properties analysis
• Esters structural characterization
• cause cancers