Milk Urea Nitrogen
Mostrando 13-24 de 38 artigos, teses e dissertações.
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13. Silagem de colostro: caracterização do perfil de fermentação anaeróbia e desempenho de bezerros leiteiros / Colostrum silage: dynamics of anaerobic fermentation and dairy calves performance evaluation
The objective of this study was to characterize the fermentative dynamic of bovine colostrum, under anaerobic condition, and determine the nutritional value, as well as evaluate dairy calves´ performance receiving colostrum silage as liquid diet. In the first experiment, bovine colostrum from second and third milking was fermented at room temperature in PET
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 03/10/2011
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14. MILK UREA NITROGEN FROM COWS FORRAGING WINTER OATS AND RYEGRASS / NITROGÊNIO URÉICO NO LEITE DE VACAS MANTIDAS EM PASTAGENS DE AVEIA E AZEVÉM
Milk urea nitrogen (MUN) is derived from protein metabolism as well as ammonia formed with the rumen. MUN can be used to estimate Blood Urea Nitrogen (BUN). The ammonia which is formed in the rumen and is not utilized in bacterial metabolism is absorbed by rumen wall and trnsformed into urea in the liver The objective of the present paper evaluate a possible
Publicado em: 2010
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15. Dietary nitrogen sources with differents ruminal degradability rates in sheep nutrition / Fontes nitrogenadas com diferentes taxas de degradação ruminal na alimentação de ovinos
Foram realizados três experimentos com o objetivo de determinar os efeitos do aumento da PDR da ração por meio do uso de fontes nitrogenadas com diferentes taxas de degradação ruminal. Exp. 1: 28 cordeiros da raça Santa Inês foram utilizados para avaliação do desempenho, características da carcaça e da carne e parâmetros sanguíneos. Além disso,
Publicado em: 2010
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16. Crossbred dairy cows on pasture fed with different supplements on dry-water transition period. / Vacas leiteiras mestiças a pasto alimentadas com diferentes suplementos no período de transição seca-águas ; Palma forrageira
This study evaluated the intake and apparent digestibility of nutrients; production and chemical composition of milk; the additional cost of the supplements; microbial synthesis of nitrogen and rude protein, and their efficiencies; plasma levels of glucose and urea; and excretions of urea in crossbred dairy cows on pasture during the dry-water transition. It
Publicado em: 2009
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17. Levels of crude protein in diets for dairy Holstein cows in tie stall / Níveis de proteína bruta em dietas para vacas leiteiras da Raça Holandesa em confinamento
It was evaluated the effect of diets with levels crude protein - CP (10, 12, 14 and 16% in dry matter - DM) on the performance and efficiency of utilization of nutrients in dairy cows. Twelve Holstein cows with average body weight (BW) of 570 kg, milk production (MP) of 13 kg/day were distributed in three 4x4 Latin squares. The feed consisted of 75% of corn
Publicado em: 2009
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18. Levels of concentrate and rumen undegradable protein in the diet of lactating cows / Níveis de concentrado e de proteína não degradável no rúmen na dieta de vacas em lactação
The modern consumer increasingly choose quality products, and industry, seeking to adapt to this new trend, has sought to reward the producer by milk quality, especially with regard to its total solids composition. This way, an experiment was conducted at the Dairy Cattle Teaching, Research and Extension Unit of Animal Science Department of Universidade Fede
Publicado em: 2009
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19. Desempenho produtivo e reprodutivo e parâmetros sanguíneos de vacas leiteiras alimentadas com diferentes fontes de gordura no período de transição e inicio de lactação / Productive and reproductive performance and blood parameters of dairy cows feeding with different fat sources in transition period and early lactation
This study was carried out to evaluate the use of different fat sources in dairy rations, in transition period and early lactation on follicular dynamics, reproductive efficiency, nutrients intake and digestibility, composition and milk yield, composition of protein fraction and energy balance. Third Holstein cows, with production of 30,0 Kg/cow/day on previ
Publicado em: 2009
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20. Silagens e fenos em associação à palma forrageira para vacas em lactação e ovinos
This study was conducted to determine the performance of lactating Holstein/zebu cows fed diets based on spineless cactus with different fiber sources, namely sorghum silage, sunflower silage, guandu hay, leucena hay and elephant-grass hay. Five cows (body weight 500 kg and average milk production 12kg) were used in 5 x 5 Latin square design with 12-day peri
Publicado em: 2008
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21. Performance and nutritional characteristics of beef heifers in growing submitted different strategies of supplementation in grazing / Desempenho e características nutricionais de fêmeas de corte em cria e recria submetidas a diferentes estratégias de suplementação em pastejo
With the objective of evaluate the productive performance and nutritional characteristics of beef females in growing, submitted to different supplementation strategies on grazing, four experiments were conducted contemplating the periods of transition rainy-dry, dry, transition dry- rainy and rainy. In the first experiment, its was evaluated the productive p
Publicado em: 2008
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22. Evaluation in vitro and vivo of the cheese whey fermented by the consortium of bacteria Enterococcus faecium and Veilonella parvula in the feeding of ruminants / Avaliação in vitro e in vivo do soro de leite fermentado pelo consórcio de bactérias Enterococcus faecium e Veilonella parvula na alimentação de ruminantes
The industry of dairy products is gradually growing along the last years, standing out the cheese production. One of the by-products obtained of the production of the cheese is the cheese whey. This one presents high demand biochemistry of oxygen (DBO), that when being discarded in rivers or public sewers, it represents important environmental problem. Like
Publicado em: 2008
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23. Silagem de cana-de-açúcar tratada com aditivo químico ou microbiano na alimentação de cabras em início de lactação / Sugar cane silage treated with microbial or chemical additives fed to goats in early lactation
Sugar cane is an important roughage source for ruminants. Sugar cane silage is an alternative feed which may improve operation efficiency at farm level. However, high levels of ethanol found in sugar cane ensiled without additive may reduce voluntary feed intake and may affect animal performance. Two experiments were performed to evaluate the effects of usin
Publicado em: 2007
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24. Utilização do grão tostado de soja (Glicine max (L) Merril) na alimentação de vacas em lactação / Roasted soybeans (glycine max. (l) merril) for lactating dairy cows
Soybeans were roasted in an experimental roaster during 2 or 3 minutes either at 380 or 490 ºC air temperature and kept or not for 30 minutes under steeping. The heat treatment effects on soybeans were evaluated in a first trial through two different procedures: a) after 16 hours of an “in situ” ruminal incubation period, all heat treated soybeans showe
Publicado em: 2007