Holstein Calves
Mostrando 1-12 de 60 artigos, teses e dissertações.
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1. Association between heart rate, heart rate variability, cortisol, glucose and electrolytes in healthy newborn calves
RESUMO Este estudo teve como objetivo avaliar os efeitos dos níveis de eletrólitos, glicose e cortisol sobre a frequência cardíaca (FC) e a variabilidade da frequência cardíaca (VFC) em bezerros recém-nascidos e saudáveis. Dezessete bezerros da raça Holandesa foram avaliados durante o primeiro mês de vida e foram analisadas as concentrações plasm
Arq. Bras. Med. Vet. Zootec.. Publicado em: 13/12/2019
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2. Phytogenic as feed additive for suckling dairy calves’ has a beneficial effect on animal health and performance
Abstract: The aim of this study was to evaluate whether the use phytogenic as feed additive of Holstein calves could exert beneficial effects on animal health and performance. Thirty newborn calves were randomly divided into two groups (control and treated), and the treated consisted of 10 g of the phytogenic product diluted in milk once a day for 30 days. B
An. Acad. Bras. Ciênc.. Publicado em: 28/11/2019
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3. Association between gestation length and lactation performance, lactation curve, calf birth weight and dystocia in Holstein dairy cows in Iran
Abstract In this study, 252,798 lactations on 108,077 cows in 433 herds were used to determine the association between gestation length (GL) and lactation performance, lactation curve, calf birth weight and dystocia in Holstein dairy cows in Iran. The GL averaged 278.1 ± 5.41 d, was categorized as short (SGL; at 1 SD below the population mean), average (AGL
Anim. Reprod.. Publicado em: 25/11/2019
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4. Passive immune transfer, health, pre-weaning performance, and metabolism of dairy calves fed a colostrum supplement associated with medium-quality maternal colostrum
ABSTRACT The objective of this study was to evaluate passive immunity transfer, health, performance, and metabolism of Holstein calves fed colostrum supplement associated with medium-quality colostrum. After birth, calves were blocked according to birth weight and date and distributed into the following treatments: high-quality colostrum (> 50 mg of Ig/mL; n
R. Bras. Zootec.. Publicado em: 28/10/2019
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5. Evaluation of pulmonary maturity in bovine neonates: analysis of amniotic fluid
RESUMO: O objetivo desse estudo foi reunir novos dados práticos sobre a avaliação da maturidade pulmonar em neonatos bovinos, padronizando as características do líquido amniótico de bezerros maduros e hígidos, o que proporcionará a oportunidade de tratamento precoce dos animais prematuros, evitando prejuízos econômicos, principalmente quando consid
Pesq. Vet. Bras.. Publicado em: 14/10/2019
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6. Myelography in calves: a comparative study between the contrast agents iopamidol and iohexol
RESUMO Devido à escassez de estudos mielográficos em bovinos e relatos de complicações no procedimento, o presente estudo teve por objetivo avaliar a eficácia e a distribuição dos meios de contraste iopamidol e ioexol em bezerros, a fim de nortear a melhor conduta para o diagnóstico de afecções vertebrais e medulares nesses animais. Foram utilizado
Arq. Bras. Med. Vet. Zootec.. Publicado em: 10/10/2019
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7. Performance and development of gastric compartments of calves fed with cheese whey and transition milk
RESUMO: Objetivou-se avaliar se o soro de queijo associado ou não ao leite de transição poderia servir como uma alternativa adequada ao leite integral para a criação de bezerros. Para isso, 24 bezerros machos, mestiços Holandês-Zebu, foram distribuídos em delineamento inteiramente casualizado com três tratamentos (oito bezerros por tratamento) e al
Cienc. Rural. Publicado em: 19/08/2019
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8. Effect of feeding heat-treated and unheated colostrum on immunoglobulin G absorption, health and performance of neonatal Holstein dairy calves
ABSTRACT. First colostrum is an important source of nutrients and immune factors which are necessary for calves in the first weeks of life. Despite these benefits, colostrum can also represent one of the earliest potential exposures of dairy calves to infectious agents which these patogens can act directly on growth and cause diseases such as scours or septi
Acta Sci., Anim. Sci.. Publicado em: 04/07/2019
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9. The effect of vinasse on the growth performance and feed digestibility of Holstein male calves
ABSTRACT. Industrial effluents of alcohol production are problematic for the environment. One of the proposed solutions to the reduction of harmful effects of the wastewater is to convert it into vinasse. The purpose of the present study is to investigate effects of rations with different levels of vinasse as a source of protein in the diet of 28 male Holste
Acta Sci., Anim. Sci.. Publicado em: 04/07/2019
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10. Analysis of tRNA halves (tsRNAs) in serum from cattle challenged with bovine viral diarrhea virus
Abstract Acute infections of bovine viral diarrhea virus (BVDV) lead to a range of clinical presentations. Laboratory tests for detection depend on collection of samples during a short viremia. Acutely infected animals remain largely undiagnosed. Transfer RNA halves (tsRNAs) are hypothesized to function like microRNAs to regulate gene expression during an im
Genet. Mol. Biol.. Publicado em: 27/06/2019
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11. Performance and fatty acid profile of Holstein calves slaughtered at different weights
ABSTRACT Our objective was to evaluate performance and fatty acid contents of the meat of Holstein veal fed in feedlots and slaughtered at four different pre-determined live weights (140, 180, 220, and 260 kg). Twenty-three non-castrated calves with initial average ages of 58 days and 57 kg live weight were used in this study. Average daily gain, dry matter
R. Bras. Zootec.. Publicado em: 23/11/2018
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12. Productive performance of Holstein calves finished in feedlot or pasture
ABSTRACT The use of animals from dairy farms is an alternative to meat production since it provides an increment of total income for farmers. This study aims to evaluate the performance of Holstein calves finished in two feeding systems (feedlot or pasture). Forty-three animals with 58 days old and 57 kg were divided in two treatments: 23 animals finished in
An. Acad. Bras. Ciênc.. Publicado em: 31/07/2017