Heifer
Mostrando 1-12 de 32 artigos, teses e dissertações.
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1. Behavior of dairy heifers after increasing the amounts of milk replacer powder added to whole milk
Resumo: O objetivo deste trabalho foi avaliar os efeitos do aumento das concentrações de sólidos totais (ST) no leite, pela adição de quantidades crescentes de sucedâneo do leite em pó, sobre o comportamento de bezerras leiteiras. Bezerras mestiças Holandês-Gir (n = 60) foram distribuídas em quatro tratamentos: 13,5, 16,1, 18,2 e 20,4% de ST. Dos 5
Pesq. agropec. bras.. Publicado em: 02/12/2019
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2. Effect of follicular wave synchronization on superovulatory response of Girolando embryo donors
The objective of this study was to evaluate the effect of the follicular wave synchronization method on the superovulatory response of Girolando embryo donors. Seven cows and five heifers were divided into three treatments according to the method of the follicular wave synchronization prior to superovulation. The donors were superovulated with eight FSH decr
R. Bras. Zootec.. Publicado em: 2014-11
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3. Qualitative characteristics of meat from confined crossbred heifers fed with lipid sources
Lipids have been used in ruminant feed to replace high amounts of grain for increasing the diet energy density, performance and meat quality. This study evaluated the qualitative characteristics of meat from feedlot heifers fed with sources of lipid supplements. Twenty-one crossbred heifers (1/4Nelore × 1/4Santa Gertrudis × 1/2Braunvieh) were used. Each he
Sci. agric. (Piracicaba, Braz.). Publicado em: 2012-10
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4. Heifer Retention Program in the Pantanal: a study with data envelopment analysis (DEA) and Malmquist index
The objective of this study was to propose Data Envelopment Analysis (DEA) models and non-parametric Malmquist indexes to evaluate the efficiency of 11 livestock farms in the Pantanal region. These farms took out a loan from 'Fundo Constitucional de Financiamento do Centro-Oeste' - FCO (Constitutional Financial Fund for the Midwest), a line of credit for fin
R. Bras. Zootec.. Publicado em: 2012-08
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5. Type of corn and grinding degree in a concentrate supplied to suckling calves
The objective was to assess the effects of a concentrate consisting of two types of corn: flint and dent, with three different grinding degrees (1, 3 and 5 mm), as a function of intake, performance and digestibility of three crossbred dairy suckling heifers. A randomized block design involving 54 crossbred heifers in a 2 × 3 factorial arrangement was used t
Revista Brasileira de Zootecnia. Publicado em: 2012-06
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6. Degradation kinetics and assessment of the prediction equation of indigestible fraction of neutral detergent fiber from agroindustrial byproducts
This study aimed at estimating the kinetic parameters of ruminal degradation of neutral detergent fiber from agroindustrial byproducts of cashew (pulp and cashew nut), passion fruit, melon, pineapple, West Indian cherry, grape, annatto and coconut through the gravimetric technique of nylon bag, and to evaluate the prediction equation of indigestible fraction
Revista Brasileira de Zootecnia. Publicado em: 2011-09
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7. Sensibilidade da PCR na amplificação do DNA bovino em diluição seriada e mistura de amostra macho e fêmea
A mixture of bovine DNA from a male and a female Jersey (Bos taurus taurus) bred in different proportions was used to determine the sensitivity of PCR to amplify and discriminate the bovine DNA samples. Samples were obtained from the peripheral blood of a bull and a heifer and DNA was isolated using a commercial kit for extraction and purification of nucleic
Arquivo Brasileiro de Medicina Veterinária e Zootecnia. Publicado em: 2011-08
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8. Genetic analyses of days to calving their relationships with other traits in a Canchim herd.
Heritabilities and genetic correlations in a Canchim beef cattle herd were estimated using data on the following traits: male scrotal circumference at twelve months (SC12); days to first calving (DFC) for heifers; days to calving (DC) for cows; male and female weight (W) at twelve months (W12); heifer weight at the start of the first breeding season (WFBS) a
Genetics and Molecular Biology. Publicado em: 2011
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9. Avaliação crítica da adoção de protocolos hormonais sobre o desempenho reprodutivo de fêmeas zebuínas
The experiments were conducted in five different farms located in Minas Gerais State, with particular management according to the use of breeding season, suckling restriction and artificial insemination. The animals were divided into categories (heifer, non-lactating and lactating cows) and their reproductive status were evaluated by rectal palpation and ult
Publicado em: 2009
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10. IMUNIZAÇÃO GENITAL DE BEZERRAS COM UMA CEPA RECOMBINANTE DO HERPESVÍRUS BOVINO TIPO 1 DEFECTIVA NA GLICOPROTEÍNA E / GENITAL IMMUNIZATION OF HEIFERS WITH A RECOMBINANT STRAIN OF BOVINE HERPESVIRUS TYPE 1 DEFECTIVE IN THE GLYCOPROTEIN E
We herein report an evaluation of the attenuation and protection conferred by genital vaccination of heifers with a bovine herpesvirus type 1 strain (BoHV-1) defective in the glycoprotein E (SV265gE-). A group of six seronegative heifers was vaccinated with SV265gE- in the submucosa of the vulva (group IV; 106.9TCID50); four heifers were vaccinated intramusc
Publicado em: 2009
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11. Efeito do Fornecimento Crônico de Leptina e da Nutrição na Maturação Sexual de Novilhas Zebuínas (Bos taurus indicus) / Effect of Chronic Leptin Administration on Sexual Maturation of Zebu Heifers (Bos taurus indicus)
This study was carried out to evaluate the effects of chronic administration of recombinant ovine leptin (oLeptin) and the energy level of the diet on age, body weight (BW), body condition score (BCS) and body composition at puberty, as well as to evaluate its effects on dominant follicle (DF) development and dry matter (DM) intake. Thirty six Nellore heifer
Publicado em: 2009
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12. The influence of the body weight and the characteristics of the carcass about the creatinine excretion and the use of spot sample of urine to estimate the excretion of purine derivatives and the nitrogenous compounds in nelore heifers / Influência do peso corporal e das características de carcaça sobre a excreção de creatinina e utilização de coleta spot de urina para estimar a excreção de derivados de purinas e de compostos nitrogenados em novilhas nelore
This study aimed to evaluate the relation between body weight, the amount of muscle in the carcass, the rib eye area and subcutaneous fat thickness with the daily excretion of creatinine in Nelore heifers of different weights. We also assessed the total creatinine excretion at intervals of 4 and 24 hours and the relation of purine derivatives (PD), urea (U)
Publicado em: 2009