Calves Performance
Mostrando 1-12 de 80 artigos, teses e dissertações.
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1. 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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2. 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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3. 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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4. Substituition of urea for soybean meal and forced intake of minerals on the performance of growing crossbred calves
RESUMO Quarenta e oito bezerros cruzados, com peso vivo de 203,6±3,7kg e idade de 11,8±1,0 meses, sendo 24 machos e 24 fêmeas, foram distribuídos nos tratamentos: MT - sal mineral à vontade e cana-de-açúcar adicionada de 10g kg -1 de uma mistura de ureia e sulfato de amônio na proporção de 9:1; MA - cana-de-açúcar adicionada de 16g kg -1 de uma
Arq. Bras. Med. Vet. Zootec.. Publicado em: 28/10/2019
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5. 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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6. Citrus pulp-based supplement reduces the detrimental effects of high grazing pressure on the performance of beef cattle under a rotational system of Urochloa brizantha
RESUMO Os objetivos foram avaliar o desempenho de tourinhos em duas estratégias de pastejo e a suplementação energética em um sistema de lotação rotacionadade capim marandu (Urochloa brizantha) e avaliar a composição morfológica e bromatológica da gramínea. Oitenta bezerros não castrados com 8 meses de idade [224 ± 2,4 kg peso vivo (PV)] distrib
Rev. bras. saúde prod. anim.. Publicado em: 15/07/2019
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7. 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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8. 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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9. Passive transfer of immunity in dairy calves with additional consumption of immunoglobulin through colostrum supplement: effects in health and performance
RESUMO O objetivo do presente experimento foi avaliar o efeito do consumo adicional de imunoglobulinas através do fornecimento de suplemento de colostro associado a colostro materno de alta qualidade na transferência de imunidade passiva, saúde e desempenho de bezerras da raça Holandesa recém-nascidas. Após o nascimento, 80 fêmeas foram distribuídas
Rev. bras. saúde prod. anim.. Publicado em: 02/05/2019
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10. Health benefits of subcutaneous zinc edetate and diphenyl diselenide in calves during the weaning period
Abstract: The aims of this study were to investigate whether treatments with zinc edetate (Zn) and diphenyl diselenide ((PhSe)2) enhance performance, immune responses, protein metabolism, and oxidant/antioxidant status in calf serum and muscle. Animals were divided into four groups (n=6 each): control (without supplementation), and groups supplemented on day
An. Acad. Bras. Ciênc.. Publicado em: 08/04/2019
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11. PRODUCTIVE PERFORMANCE OF PRE-WEANED CALVES REARED IN THE PANTANAL
Resumo A desmama precoce (DP) vem sendo adotada nas fazendas de cria do Pantanal como alternativa para o aumento dos índices de concepção das vacas. A principal receita dessas propriedades são os bezerros (as), sendo o seu valor dependente dos seus respectivos pesos. Assim é necessário que os bezerros submetidos à DP, apresentem pesos semelhantes ou a
Ciênc. anim. bras.. Publicado em: 04/02/2019
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12. Performance of Nellore calves in tropical pasture consuming different types of concentrated supplements
RESUMO Foi avaliada a utilização de tipos de suplementos concentrados sobre o desempenho de bezerros Nelore em pasto de Urochloa brizantha cv. Marandu na época seca. O experimento foi conduzido em 24ha divididos em 12 piquetes. Foram utilizados 72 bezerros com peso corporal (PC) inicial de 176±14kg por 140 dias de experimento. Os tratamentos foram: miner
Arq. Bras. Med. Vet. Zootec.. Publicado em: 2019-02