Holstein Calves
Mostrando 13-24 de 60 artigos, teses e dissertações.
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13. Performance of Holstein calves having free access to milk and dosed with Megasphaera elsdenii
ABSTRACT Megasphaera elsdenii converts lactate and glucose into butyrate, the main volatile fatty acid responsible of papillae development and may benefit calf performance. Twenty-six Holstein calves (BW = 34.5 ± 1.65 kg) were randomly assigned at birth to a control group (Meg0) and a group that received an oral dose of M. elsdenii NCIMB 41125 at 14 d of ag
Sci. agric. (Piracicaba, Braz.). Publicado em: 2017-06
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14. Performance of calves submitted to protocols using extruded or ground starter
Feed processing can affect rumen development in new born calves, and potentially define animal performance. Two feed management systems, extruded starter (Ruter) with possible early weaning and ground starter (control), were evaluated in thirty-two Holstein calves (16 females and 16 males). Animals were randomly assigned to the treatments using a randomized
Braz. arch. biol. technol.. Publicado em: 2014-10
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15. AVALIAÇÃO DE COMPONENTES DA FIBRA COMO MARCADORES INTERNOS E DE ALCANOS PARA ESTIMAR O FLUXO DE DIGESTA NO DUODENO DE BOVINOS / EVALUATION OF FIBER COMPONENTS AS INTERNAL MARKERS AND ALKANES FOR DUODENAL DIGESTA FLOW ESTIMATION IN CATTLE
The use of ADF as internal Marker of duodenal digesta flow was evaluated, for this the intestinal degradability of fiber was studied. Four Holstein calves (156 33 kg), fitted with duodenal cannula T simple, and one calve fitted on the rumen, fed diet base with black oat and supplement, was used. Seven feeds were weighted on the polyester bags (7x5,5cm; 25
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 01/03/2012
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16. Aerobic fungi in the rumen fluid from dairy cattle fed different sources of forage
The objective of this study was to evaluate the aerobic microbiota of the rumen fluid from Holstein cows and heifers fed different tropical forage in the north of Minas Gerais, Brazil. A total of 30 samples of rumen fluid from cows fed with sorghum silage were collected: 32 from cows fed Brachiaria brizantha, 12 from heifers that received sorghum silage and
R. Bras. Zootec.. Publicado em: 2012-11
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17. Evaluation of mannan-oligosaccharides offered in milk replacers or calf starters and their effect on performance and rumen development of dairy calves
The objective of this study was to evaluate the route of administration of mannan-oligosaccharides in the diet of dairy calves and their effects on performance and plasma parameters indicative of rumen development. Following birth, twenty-four male Holstein calves were used in a completely randomized design and assigned to the following treatments: Control;
Revista Brasileira de Zootecnia. Publicado em: 2012-03
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18. Metabolic changes in ruminant calves fed cation-anion diets with different proportions of roughage and concentrate
Two experiments were carried out with twenty-four male weaned Holstein calves to verify the influence of different dietary cation-anion concentrate and roughage proportions on calves metabolism. In the first experiment, calves were fed rations with -100, +200 and +400 mEq cation-anion balance/kg of dry matter, containing 60% of roughage and 40% of concentrat
Revista Brasileira de Zootecnia. Publicado em: 2012-02
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19. 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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20. Enfermidades Cutâneas Digitais Bovina: Aspectos Genéticos E Terapêuticos / Digital dermatitis disease bovine: genetic and therapeutic aspects
This study has aimed do evaluate a risk factor for bovine digital dermatitis and the efficacy of 5% aqueous barbatimão extract solution as ancillary in interdigital skin incisional wound repair. One hundred bovine females, 50 Holstein and 50 Girolando, from two different farms were used for the risk factor study. Experimental units were divided into four gr
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 18/03/2011
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21. Avaliação clínica da infecção experimental de bezerros com Salmonella Typhimurium
The clinical conditions of healthy calves infected with 10(9) CFU of Salmonella Typhimurium were evaluated and the viability of the experimental model in disease induction was verified. Twelve male Holstein calves, 10 to 15-days old, were examined. They were allocated into two groups, control and experimentally infected. Animals were submitted to clinical ex
Arquivo Brasileiro de Medicina Veterinária e Zootecnia. Publicado em: 2011-12
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22. Comparação do isolamento microbiológico e da reação em cadeia da polimerase no diagnóstico de salmonelose em bezerros infectados experimentalmente com Salmonella Typhimurium
The efficiency of microbiological culture and polymerase chain reaction (PCR) for detection of Salmonella Typhimurium is compared in fecal samples of Holstein calves experimentally infected with 10(9) CFU of Salmonella Typhimurium. Seventy-two fecal samples were analyzed by microbiological culture and PCR associated with selenite cystine (SC) and Muller-Kauf
Arquivo Brasileiro de Medicina Veterinária e Zootecnia. Publicado em: 2011-10
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23. Production indices for dual purpose cattle in central Brazil
This study examined the effects of crossbreeding low genetic potential cows of Bos indicus origin characterized by Gyr crossed with Holstein-Friesian and Simmental bulls to produce animals in a low input dual purpose system. The farm is situated near Brasilia, in the savannah region of Brazil. The climate of the region is classified as Aw by Köppen. Data wa
Revista Brasileira de Zootecnia. Publicado em: 2011-07
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24. Decoquinate, Lasalocid and Monensin for starter feeds and the performance of Holstein calves to 20 weeks of age.
2002
Scientia Agricola. Publicado em: 2011