Crossbred Heifers
Mostrando 1-12 de 42 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. Concentrations of acute-phase proteins and immunoglobulins in serum and synovial fluid in clinically healthy heifers and steers
RESUMO: O objetivo do estudo foi determinar o padrão de concentração de proteínas de fase aguda e de imunoglobulinas intra-articulares (APPs) em bovinos mestiços saudáveis. As amostras de fluido sinovial (SF) foram coletadas da articulação radiocárpica de 25 novilhas e 25 novilhos. As concentrações de APPs foram mensuradas por SDS-PAGE. Os resulta
Pesq. Vet. Bras.. Publicado em: 18/07/2019
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3. Thermal comfort and grazing behavior of Girolando heifers in integrated crop-livestock (ICL) and crop-livestock-forest (ICLF) systems
ABSTRACT. To compare the integrated crop-livestock-forest (ICLF) and crop-livestock (ICL) systems in relation to thermal comfort and grazing behavior of Girolando heifers, a 2 × 2 crossover trial (two system and two periods) was carried out with eight – Holstein × ¼ Gyr heifers in Xaraés-palisade grass pasture under intermittent stocking with 10 days o
Acta Sci., Anim. Sci.. Publicado em: 04/07/2019
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4. Physiological responses and animal behavior in Bonsmara-Hereford crosses vs. Hereford purebred on environment stress
ABSTRACT: Adaptative traits (rectal temperature-RT, respiratory rate-RR) and grazing behavior (Grazing, Ruminating and Rest time, and Sun or Shade time) of Bonsmara-Hereford crossbred-BH, n = 15, and purebred Hereford-HH, n = 18, yearling heifers, in a grazing system of Uruguay. Environment characterization was made using THIadjusted by radiation and wind sp
Sci. agric. (Piracicaba, Braz.). Publicado em: 2018-12
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5. Relationship of post-weaning growth and age at puberty in crossbred beef heifers
ABSTRACT This study was intended to evaluate body size structure and growth parameters of crossbred heifers fed at four nutritional levels to achieve puberty earlier. Animals were classified depending on their level of crossing between Nelore and Hereford and subjected to four nutritional levels (kg day−1) as follows: 0.5 (light; n = 32), 0.75 (medium; n =
R. Bras. Zootec.. Publicado em: 2017-05
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6. Sugarcane bagasse as exclusive roughage for dairy heifers
ABSTRACT The objective of this study was to evaluate the effect of different concentrate levels (40, 50, 60, and 70% on dry matter basis) on intake, digestibility of nutrients, and performance of heifers fed sugarcane bagasse as exclusive roughage. Twenty Girolando heifers, with an average body weight of 198±25.6 kg were assigned to a completely randomized
R. Bras. Zootec.. Publicado em: 2017-01
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7. Different true-protein sources do not modify the metabolism of crossbred Bos taurus × Bos indicus growing heifers
The present study was conducted to investigate the effect of alternative true-protein sources to soybean meal, with different ruminal degradability, using a sugarcane-based diet, on nutrient digestion, ruminal fermentation, efficiency of microbial protein synthesis and passage rate in prepubertal dairy heifers. Eight crossbred rumen- and duodenum-cannulated
R. Bras. Zootec.. Publicado em: 2015-02
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8. Validação do nanolipe como indicador para estimativa do consumo em bovinos leiteiros
Five crossbred heifers were used in order to validate the NANOLIPE as a marker to estimate dry matter intake in dairy cattle. The results obtained with this marker were compared with three other methods: total collection, fecal crude protein and Klason Lignin (in combination with NANOLIPE). There was no difference between the methods tested (P>5%), a fact th
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 27/02/2012
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9. Grão de soja em suplementos múltiplos para novilhas de corte em pastejo / Soybean in multiple supplements for grazing beef heifers
This dissertation was prepared from two experiments with beef heifers submitted to different supplementation strategies on pasture. In the first experiment aimed to evaluate the effect of replacing soybean meal by soybean at different levels in multiple supplements on the nutritional characteristics and productive performance of heifers grazing in Uruchloa d
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 16/02/2012
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10. 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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11. Performance of supplemented heifers on Marandu grass pastures in the wet-to-dry transition and dry seasons
The objective of the present study was to evaluate the characteristics of the sward canopy of Marandu grass during the rainy season, the wet-to-dry transition and the dry seasons, between March and September 2004, under intermittent grazing, and to correlate those characteristics with the performance of crossbred heifers receiving mineral supplements ad libi
R. Bras. Zootec.. Publicado em: 2012-10
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12. Metabolism and ruminal parameters of Holstein × Gir heifers fed sugarcane and increasing levels of crude protein
The objective of this study was to evaluate the effect of increasing levels of crude protein (CP) in the diet (13, 15, 19 and 22 g/100 g of dry matter, DM) on the metabolism and ruminal parameters of crossbred heifers fed forage sugarcane. Four crossbred Holstein × Gir heifers of average initial weight of 200 kg and average age of 14 months were used. The e
R. Bras. Zootec.. Publicado em: 2012-09