Suplementação de bovinos de corte em pastejo

Lemos, B. J. M.; Souza, F. M. de; Moreira, Kíria Karolline Gomes; Guimarães, Tiago Pereira; Pereira, Marcela Luzia Rodrigues; Ferreira, Sérgio Fernandes; Silva, Rodrigo Medeiros da

doi:10.22256/pubvet.v6n32.1457

Cited by 2 publications

(1 citation statement)

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“…In tropical and subtropical regions, forages are the main components of the diet in most cow-calf herds (Bell and Greenwood, 2013). Such a scenario promotes variation in pasture availability and quality throughout the year, which is insufficient to meet the nutritional requirements of pregnant cows, mainly during mid-to late gestation (Lemos et al, 2012). Therefore, maternal restriction during critical periods of fetal skeletal muscle and adipose tissue development may compromise the performance and meat quality of the offspring (Figure 2).…”

Section: The Impact Of Maternal Nutrition On the Performance Carcass ...mentioning

confidence: 99%

Prenatal origins of productivity and quality of beef

Santos¹,

Costa²,

Ramírez-Zamudio³

et al. 2022

Revista Brasileira De Zootecnia

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RuminantsBoard-invited review Prenatal origins of productivity and quality of beef ABSTRACT -The productive traits of beef cattle are orchestrated by their genetics, postnatal environmental conditions, and also by the intrauterine background. Both under-or overnutrition, as specific dietary components, are able to promote persistent effects on the offspring. This occurs because dietary factors act not only affecting the availability of substrates for fetal anabolism and oxidative metabolism, but also as signals that regulate several events toward fetal development. Therefore, this study aimed to summarize the gestational nutrition effects on the offspring performance and meat quality in a long term. Overall, studies have shown that many of these alterations are under the control of epigenetic mechanisms, as DNA methylation, histones modification, and non-coding RNA. The current knowledge has indicated that the fetal programming responses are dependent on the window of fetal development in which the dietary treatment is applied, the intensity of maternal nutritional stimuli, and the treatment application length. Collectively, studies demonstrated that muscle cell hyperplasia is impaired when maternal requirements were not achieved in the second third of gestation, which limits the formation of a greater number of muscle fibers and the offspring growth potential in a long term. Changes in muscle fibers metabolism and in collagen content were also reported as consequence of a dietary perturbation during pregnancy. In contrast, a maternal overnutrition during the late pregnancy has been associated with beneficial responses on meat quality. In summary, ensuring an adequate maternal environment during the fetal development is crucial to enhance the productive responses in beef cattle operations.

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Section: The Impact Of Maternal Nutrition On the Performance Carcass ...mentioning

confidence: 99%