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238 Uppsatser om Beef cattle - Sida 5 av 16
Cross-sectional study of the prevalence of Babesia bigemina in Uganda : wildlife-livestock interface at and around LMNP
Ticks and the diseases they transmit are of major importance throughout the world. In Uganda, cattle are the most important livestock from an economic point of view. Livestock keepers fear bi-directional transmission of tick-borne pathogens between their livestock and wild animals. This cross-sectional study was conducted to establish and compare the sero-prevalence of the tick-borne pathogen Babesia bigemina among randomly selected Ankole Long-horned cattle and European crossbred cattle on 30 farms in Kiruhura district, in two sub-counties near Lake Mburo National Park in South-western Uganda. Half of the farms were situated in close proximity to the park and thereby housed cattle with more frequent wildlife-livestock interface (Sanga), whereas the other half had less frequent contact (Kikatsi).
En jämförelse mellan får- och nötkreatursbetade hagmarker med avseende på populationsstorlek samt artsammansättning hos dagfjärilar och örter
Many of Europe?s day-living butterflies have shown decreasing populations during the last decades and many species are threatened. Many butterflies are dependent on managed semi-natural grasslands because of their richness in nectar sources and host plants for the butterfly larva. Swedish pastures are mostly managed through grazing. The number of cattle in Sweden have been decreasing while the number of sheep in the country increased by 30%.
Läggning och resning hos ungtjurar i liggbås : inverkan av båsfrontsutförande
Cattle have a species specific movement pattern when lying down and getting up. They need sufficient space for their heads to perform these movements normally. The aim of this study was to investigate the lying down and getting up behaviour of beef bulls at a Swedish farm operation. The hypothesis was that bulls older than 10 months (over approximately 400 kg) were disturbed by a horizontal front rail and that the time to lie down and get up differed from what can be regarded as normal based on earlier scientific studies. The bulls were Swedish Red and White (SRB), Swedish Friesian (SLB) or crossbreeds of these two, and were kept in a cubicle system with a stall front design where there was a horizontal rail 40 cm above the stall floor.
Fri utfodring av halm som strategi för att förhindra stereotypier hos uppbundna kvigor :
At present indoor tethering of dairy cows is still common but is not predicted to take part of modern dairy production. When conducting scientific studies of cattle it is generally necessary to tether the animals to maintain a controlled environment. Studies confirm that tethering and confinements of cattle severely affects the development of stereotypies in cattle. The feeding regime and feeding level have an immense affect on the stereotypi level in cattle.
The aim of this experiment was to study dairy heifers that had never been tethered before the start of the experiment, to evaluate the affect of tethering on the development of stereotypies and the impact of the feeding regime on the behavior of the animals.
Sixteen dairy heifers were tethered in a tie stall and divided in two groups with different treatments. Heifers in treatment E were fed restrictedly with silage and treatment EH was fed with the same amount of silage but also straw ad libitum.
Crossbreeding in dairy cattle
The aim of this literature review is to give an overview of the differences between pure- and crossbreeding systems. Crossbreeding is a mating system with individuals of different lines or breeds. It is one of several breeding strategies in dairy production used to increase the economic profit. The use of crossbreeding increases due to changes in the dairy market and an increase of inbreeding among purebred Holstein. The main benefit of crossbreeding is heterosis, which is the improvement in genetic level in a hybrid offspring above the average of the parent breeds.
Vivesholm : djurbenen belyser den gotländska medeltida borgens husdjurshållning samt husgrundernas användningsområden
The castle Vivesholm is located about two miles north of Klintehamn on the west side of Gotland. The castle was built around year 1395 and burned down in the end of the 14thcentury. Around the 17th and the 18th century the castle was re-used. However, the emphasis on its use is during the middle ages.This paper aims at getting an insight in the animal husbandry at Vivesholm by analyzing the osteological material. The analysis revealed that bones from sheep/goat were more common than bones from cattle.
Improvement in agricultural production in a rural area of Cambodia between 2004 and 2011 - with an emphasis on small scale cattle production
Cambodia is located in Southeast Asia with a tropical monsoon climate and distinctive wet and dry seasons. Poverty is a widespread problem in Cambodia and 30 percent of the population were classified as poor in 2009. About 80 percent of the populations live in rural areas where poverty is an even greater problem. In agriculture, rice cultivation is dominating and the crop is cultivated on 85 percent of the arable land. Livestock keeping is also a traditional part of Cambodian agriculture.
Artificiell insemination i dikobesättningar
Den vanligaste produktionsformen av nötkött sker i dikobesättningar, där kor och kvigor förväntas föda en kalv per år. I sådana besättningar är fertilitet hos djuren en viktig faktor, då förmågan att föda fram en kalv varje år påverkar inkomsten. I Sverige används naturlig betäckning i störst utsträckning, men ett alternativ är artificiell insemination. Syftet med detta arbete är att undersöka för- och nackdelar med artificiell insemination och varför det inte används i samma utsträckning inom dikobesättningar som hos mjölkkor, samt när det kan vara aktuellt att använda sig av.
Den artificiella inseminationens påverkan på dräktighetsresultat varierar mycket i studierna, från 37 till 74 %, men det antyds att 50 % är ett gränsvärde där resultat över detta kan anses godtagbara. Ekonomiskt finns fördelar så som ökade kalvvikter och mindre förluster relaterat till kalvningssvårigheter, men nackdelar i form av ökade kostnader för veterinärtjänster och mediciner samt för arbete.
Utvärdering av olika diagnostiska metoder för infektioner med bovint coronavirus hos nötkreatur :
This paper shortly describes the coronavirus family, bovine corona viruses (BCV)
properties and two diseases that BCV causes, winter dysentery and calf diarrhoea.
The purpose of the study was to compare different diagnostic methods to detect
BCV. Different methods are discussed, PCR, ELISA, immunofluorescense and
virus isolation.
Investigations were made in three different herds with winter dysentery; one dairy
cattle farm with about 100 cows of different ages, one testing station for bulls with
about 150 bulls and another small dairy cattle farm with 26 cows and 20
replacement heifers and calves. Faeces and nasal swabs were analysed with PCR
and ELISA.
The result shows that PCR seems to be a reliable method for detecting BCV but
that the ELISA test can not be used as a reliable diagnostic method to analyse
samples from animals with winter dysentery..
Traditional milk production in cattle in a semi-arid area in Kenya
Livestock of pastoralists provide meat, milk, blood, dung and are useful for transportation purposes. In semi-arid and arid areas with very low precipitation the herder must often walk far distances to feed the livestock. This affects the animals? production, especially of milk. Previous studies have investigated how to improve milk production in terms of milking strategies in cattle.
Produktkvalitet på svenskt nötkött : en kartläggning av kvalitetsfaktorer inom IP Sigill
Sigill Quality Systems has been certifying beef since the autumn of 2006 using the brand
name label Swedish Sigill. IP Sigill (the certifying system for integrated production)
encompasses the values: animal ethics, food safety, free range and environmental concerns. Product quality is not yet one of these values, and there is a variation in the quality of Swedish beef. Swedish Sigill wanted to investigate the factors that influence product quality, review which of the present regulations that have an influence on product quality and formulate new regulations with the purpose of enhancing the product quality (sensorial, technological and nutritional quality).
A survey of quality parameters and factors that influence product quality was done in order to establish a scientific foundation to work from.
Bovin tuberkulos : smittvägar mellan människa och nötkreatur på den östafrikanska landsbygden
Tuberculosis is one of many infectious diseases in the world and is responsible for a large number of human deaths each year. The cause is Mycobacterium ssp included in the tuberculosis-complex, there among Mycobacterium bovis and Mycobacterium tuberculosis. Infection with M. bovis causes bovine tuberculosis in cattle which in 90 % has a pulmonary location. Humans are infected mainly by milk from infected cows but also by close contact with coughing animals or by eating raw meat.
Potentiella alternativ till antibiotika vid behandling av Staphylococcus aureus-mastit
Tuberculosis is one of many infectious diseases in the world and is responsible for a large number of human deaths each year. The cause is Mycobacterium ssp included in the tuberculosis-complex, there among Mycobacterium bovis and Mycobacterium tuberculosis. Infection with M. bovis causes bovine tuberculosis in cattle which in 90 % has a pulmonary location. Humans are infected mainly by milk from infected cows but also by close contact with coughing animals or by eating raw meat.
Seroprevalence and risk factors for bovine brucellosis, salmonellosis and bovine viral diarrhea in urban and peri-urban areas of Kampala, Uganda
Africa is expected to go through a rapid urbanization over the next four decades and the demand for food is increasing in the rapidly growing urban and peri-urban (UPU) areas. Keeping livestock in urban areas is in particular associated with health hazards. This is due to close interaction between humans and animals, and it has been shown that zoonotic diseases are increasing in urban areas. The benefits of urban and peri-urban agriculture (UPA) are related to improved food security, in particular among low-income groups. Apart from the negative public health impact of zoonotic diseases, animal disease could have a devastating impact on the economy and food security of many households in these areas.
In the present study, three important endemic diseases, including brucellosis, salmonellosis and Bovine viral diarrhea (BVD), were analyzed in regard to seroprevalence and risk factors.
Tidsstudie - grovfoderhantering :
Since feeding fodder crops to dairy cows is a heavy and time-consuming but often
disregarded line of work, this study wishes to view the different possibilities that are
currently available to decrease the time to feed and apply this knowledge on an
existing farm. For this purpose, four farms have been studied due to what feeding
systems that are currently used and how long time the feeding required. The occurring
systems are either mobile, i.e. a feed mixer operated by a tractor witch feeds the cattle
via a drivable fodder table, or a stationery mixer, i.e. an electrically powered mixer
which fills an automatic feeder.