Desempenho de novilhas leiteiras sob manejo para crescimento compensatório recebendo suplementação com ionóforo

Costa, Patrícia Barcellos; Queiróz, Augusto César de; Rodrigues, Marcelo Teixeira; Magalhães, André Luíz Rodrigues; Costa, Marcone Geraldo; Toral, Fábio Luiz Buranelo; Carvalho, Thony Assis; Monteiro, Luana Pereira; Zorzi, Karina; Duarte, Márcio de Souza

doi:10.1590/s1516-35982007000200025

Cited by 5 publications

(3 citation statements)

References 29 publications

(13 reference statements)

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“…The results of the present study are in agreement with those observed in the literature (Bail et al, 2000;Costa et al, 2007), in which, after having their intake moderately restricted, the animals showed greater weight gain in the subsequent period, feeding ad libitum, in relation to the animals that never went through feeding restrictions. In the postweaning phase, the animals that remained on 15 cm pastures underwent restricted dry matter intake in relation to the others, which was caused by non-nutritional factors related to the canopy structure (Casagrande, 2010).…”

Section: Resultssupporting

confidence: 93%

Performance and carcass quality of feedlot- or pasture-finished Nellore heifers according to feeding managements in the postweaning phase

et al. 2013

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-The objective of this study was to evaluate the postweaning history of heifers kept on marandu grass pastures with three canopy heights, in a continuous-grazing system, during the rainy period, on feedlot-or pasture finishing. The effects of three canopy heights (15, 25 and 35 cm) associated with two supplements (mineral salt and protein-energy supplement) and two finishing systems in the dry period (feedlot and open pasture) were studied in the postweaning period during the rainy season. The adopted design was completely randomized, with seven replications (animals) in a 2 × 2 factorial arrangement. The animals which received protein-energy supplement reached the finishing period with greater body weight in relation to those fed mineral salt. In both feedlot and pasture finishing systems, compensatory gain effect was observed in the animals that remained on the low pastures during postweaning compared with the high pastures. This compensatory gain was not verified in the animals that received protein-energy supplement in relation to the mineral salt, and thus the animals were slaughtered beforehand. The heifers on pastures with 25 or 35 cm in height were slaughtered in the same period, and those kept on the low pastures were slaughtered afterwards. The studied factors in the postweaning phase did not affect the carcass characteristics. Animals finished in feedlot slaughtered with the same body weight as those finished on pasture show greater carcass yield, subcutaneous fat deposition and renal pelvic and inguinal fat and greater losses with trimmings for cleaning the main hindquarter meat cuts; however, they provide cuts with the same weight but greater fat cover.

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Section: Resultssupporting

confidence: 93%

Performance and carcass quality of feedlot- or pasture-finished Nellore heifers according to feeding managements in the postweaning phase

et al. 2013

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“…Segundo Costa et al (2007) Rabelo et al (2007) afirmam que as exigências nutricionais de Ca, P, Mg, Na e K não diferem entre as raças Guzerá e Holandesa para novilhas com peso vivo (PV) entre 200 e 300kg. A concentração corporal (g/kg de peso de corpo vazio -PCVZ) e as exigências líquidas (g/kg de ganho de PCVZ ou PV) de Ca, P, Mg, Na e K diminuem à medida que o peso dos animais se eleva.…”

Section: Exigências Nutricionais De Novilhas Leiteirasunclassified

Cana de açúcar na alimentação de novilhas leiteras: Revisão

Caetano¹,

Júnior²,

Oliveira³

et al. 2016

Pubvet

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RESUMO.A presente revisão de literatura tem como objetivo apresentar como a cana de açúcar é utilizada na recria de novilhas leiteiras. Algumas características relacionadas à cultura da cana de açúcar, tais como a facilidade de seu cultivo, a execução da colheita justamente na época de estiagem, possibilidade de auto armazenamento ou conservação a campo, persistência da cultura e a grande produção obtida em nossas condições tornaramna um alimento de grande interesse dos criadores. Fêmeas em recria necessitam de um ganho de peso que garanta uma idade ao primeiro parto aos vinte e quarto meses de idade. Serão relatados os sistemas de recria de novilhas, os aspectos importantes ligados à nutrição de novilhas, limitações do uso da cana de açúcar para bovinos, composição e a produtividade da cana de açúcar. Os resultados de diferentes trabalhos de pesquisa sugerem várias formas de utilização da cana de açúcar para a obtenção de resultados satisfatórios como a cana in natura, cana com ureia, a silagem de cana, cana hidrolisada e o bagaço da cana de açúcar. Apesar da baixa digestibilidade da cana de açúcar e do menor ganho de peso das novilhas quando comparadas com outros tipos de alimentações como, por exemplo, a silagem de milho, a cana de açúcar mostrou-se ser uma alternativa viável para recria de novilhas leiteiras em propriedades pouco tecnificadas. Palavras chave: Bovinos leiteiros, novilhas, formas de utilização de cana de açúcarSugar cane in feeding of milker heifers: Review ABSTRACT. This review aims to present how sugarcane is used in the rearing of dairy heifers. Some characteristics related about the culture of sugarcane, such as ease of cultivation, implementation of crop in the dry season, the possibility of self-storage or conservation field, persistence of culture and great production obtained in Brazilian conditions They made it a food of great interest to breeders. Females in growing need an average weight gain that guarantees an age at first calving at twenty-four months old. Will be reported the dairy heifer's systems, important aspects of heifers' nutrition, limitations of use of sugarcane for cattle, composition and productivity of sugarcane. The results of different research papers suggest several ways of using sugarcane to obtain satisfactory results as in natural cane, cane with urea, silage cane, hydrolyzed cane and bagasse from sugarcane. Despite the low digestibility of sugarcane and less weight gain for heifers as compared to other feeds, for example, silage corn, sugarcane proved to be a viable alternative for rearing dairy heifers little technicality properties.

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“…Estimativas indicam que 15 a 20 % do custo total da produção de leite são decorrentes de despesas com a criação de novilhas para reposição do rebanho e que aproximadamente 50 % desse custo de produção resulta da alimentação dos animais (Costa et al, 2007). Um meio de reduzir os custos com a criação das novilhas é a aceleração do crescimento, propiciando a diminuição da idade ao primeiro parto e elevando a vida útil do animal.…”

Section: Introductionunclassified

Comportamento ingestivo de novilhas suplementadas a pasto sob nutrição compensatória

et al. 2013

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Desempenho de novilhas leiteiras sob manejo para crescimento compensatório recebendo suplementação com ionóforo

Cited by 5 publications

References 29 publications

Performance and carcass quality of feedlot- or pasture-finished Nellore heifers according to feeding managements in the postweaning phase

Performance and carcass quality of feedlot- or pasture-finished Nellore heifers according to feeding managements in the postweaning phase

Cana de açúcar na alimentação de novilhas leiteras: Revisão

Comportamento ingestivo de novilhas suplementadas a pasto sob nutrição compensatória

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