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Teixeira, Fábio Andrade; Universidade Estadual do Sudoeste da Bahia; Silva, Fabiano Ferreira da; Universidade Estadual do Sudoeste da Bahia; Bonomo, Paulo; Universidade Estadual do Sudoeste da Bahia; Pires, Aureliano José Vieira; Universidade Estadual do Sudoeste da Bahia; Nascimento, Paulo Valter Nunes; Faculdade Católica do Tocantins; Gonçalves Neto, João; Faculdade Católica do Tocantins. |
Voluntary intake and performance of dairy heifers grazing on Urochloa decumbens pastures with two deferral periods are evaluated. The totally randomized experimental design consisted of two treatments and seven replications, with two deferral periods: T1 = 95 and T2 = 140 days. Fourteen Holstein-Zebu heifers, average body weight (BW) 300 kg, were used. Intake of forage dry matter was 2.5% and 1.2 BW respectively for treatments 95 and 140 days. In treatment T2 the animals had an intake of only 139.5 g of CP, due to low nutrient content, or rather, 3.4% of CP in the forage available. There was an intake of NDF of 1.7% and 1.0 of BW for T1 and T2, respectively. The average daily weight gain was 785.8 g day-1 for T1 and average weight loss of -31.1 g day-1 for... |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Pastagens structural features; Voluntary intake; Weight gain; Tropical pastures. |
Ano: 2014 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/21759 |
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RETORE, M.; ALVES, J. P.; ORRICO JUNIOR, M. A. P.; MENDES. S. S.. |
No Centro-Oeste do Brasil, durante o período chuvoso, há abundância na oferta de forragem para os animais, época em que as pastagens alcançam todo seu potencial produtivo. No entanto, no período seco, as pastagens tropicais têm seu crescimento reduzido e não conseguem suprir a demanda por nutrientes do rebanho. Por isso, é preciso planejar e definir a melhor estratégia para a alimentação dos animais no inverno, onde o processo de ensilagem pode ser a forma mais simples e econômica, principalmente para pequenas propriedades. |
Tipo: Folhetos |
Palavras-chave: Pastagem tropical; Forragem; Silagem; Nutrição Animal; Tropical pastures; Animal nutrition; Silage; Forage; Grass silage. |
Ano: 2020 |
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/1130009 |
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Pedreira,Márcio dos Santos; Primavesi,Odo; Lima,Magda Aparecida; Frighetto,Rosa; Oliveira,Simone Gisele de; Berchielli,Telma Teresinha. |
Ruminal gases, particularly methane, generated during the fermentative process in rumen, represent a partial loss of feed energy and are also pointed to as an important factors in greenhouse effect. This study aimed at quantifying methane (CH4) emission rates from lactating and dry cows and heifers, 24 month-old in average, on pasture under Southeast Brazil tropical conditions, using the tracer gas technique, sulphur hexafluoride (SF6), four animals per category, distributed in four blocks. Measurements were performed in February and June, 2002, with Holstein and Brazilian Dairy Crossbred (Holstein ¾ x Gir (Zebu) ¼), maintained on fertilized Tanzania-grass (Panicum maximum Jacq. cv. Tanzania) and fertilized Brachiaria-grass (Brachiaria decumbens cv.... |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Feeding; Genetical group; Sulphur hexafluoride; Tropical pastures. |
Ano: 2009 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162009000600004 |
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Sanches,Arthur Carniato; Souza,Débora Pantojo de; Jesus,Fernanda Lamede Ferreira de; Mendonça,Fernando Campos; Gomes,Eder Pereira. |
ABSTRACT: Crop coefficient (Kc) is the ratio between crop evapotranspiration (ETc) and reference evapotranspiration (ETo), representing the phenological effects on crop water consumption. Kc is fundamental to estimating ETc by agrometeorological methods. This research study aimed to determine Kc and ETc values for Guinea grass (Megathyrsus maximus cv. Mombaça) and Bermuda grass (Cynodon spp.), both single cropped for one year and overseeded with black oat (Avena strigosa) and ryegrass (Lolium multiflorum) during fall/winter. The experiment in the field comprised four plots, two for each tropical forage, with and without overseeding. At the center of each plot, there was a weighing lysimeter with an automated system for data collection. ETc was measured... |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Avena strigosa; Lolium multiflorum; Evapotranspiration; Lysimetry; Tropical pastures. |
Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162019001600448 |
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