Increasing levels of supplementation for crossbred steers on pasture during the dry period of the year

Neves, Daniele Soares Barroso; Silva, Robério Rodrigues; Silva, Fabyano Fonseca e; Santos, Laize Vieira; Filho, George Abreu; Souza, S. O. de; Santos, Marceliana da Conceição; Rocha, Wéder Jânsen Barbosa; Silva, Ana Paula Gomes da; Lisboa, Mateus de Melo; Pereira, Maria Magna Silva; Carvalho, Venício Macêdo

doi:10.1007/s11250-018-1574-y

Cited by 13 publications

(6 citation statements)

References 10 publications

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“…Depending upon economic conditions and farmers´ preferences (Poppi et al 2018), supplementation of cattle grazing these tropical pastures would be expected to increase their performance. Several studies conducted in the Brazilian Cerrado have unequivocally shown a positive response of fattening cattle grazing Brachiaria-based pastures to energy and protein supplements (da Silva-Marques et al 2018a, 2018bNeves et al 2018). On the other hand, supplementation of tropical beef cows has been little studied, but da Silva et al (2017) reported a small positive effect on weight losses in early lactation when Nellore (Bos indicus) cows, grazing Bd were supplemented with concentrates during the last 60 days of pregnancy; nevertheless, the effect of supplementation did not translate into reduced calving intervals.…”

Section: Discussionmentioning

confidence: 99%

Long term beef production in extensive cow-calf systems in the tropical savannas of eastern Colombia

Vera-Infanzón

Ramírez-Restrepo

2020

Rev. Med. Vet. Zoot.

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Replacement beef heifers in extensive systems of the neotropical savannas of Colombia are low priority animals and are assigned to native savannas and low-quality pastures, with scarcely researched long-term consequences. The study pooled data from four contemporary grazing experiments to determine the effects of low growth rates of heifers on their lifetime production of liveweight gains (LWGs) per year and per hectare (ha) subject to different management strategies. Three growth rates were imposed on grazing heifers during the growing phase (i.e. nine-36 months of age) on Brachiaria humidicola pastures. Upon the end of the previous phase, animals were allocated to a B. humidicola paddock with a reduced stocking rate or introduced to a B. decumbens sward to allow compensatory LWGs during the breeding phase (i.e. cows plus weaned calves). Severely limited heifers allowed to make compensatory growth did not reach the outputs of better fed animals. Regardless of the strategy followed, high producing years tended to be followed by lower production in the following year. Comparison with reasonably fed breeding cows full-time on well-managed B. decumbens showed important and significant differences in favor of the more intensive system over the lifetime of the animals. Over the nine-year period, the systems’ beef output (i.e. weaned calves plus cows’ LWGs) ranged between 86 and 206 kg/ha/year and demonstrated that a wide array of low input management alternatives is feasible. Beef output increases if the LW of cull cows is considered, particularly if they are allowed a short period of fattening during the rainy reason on a low input pasture.

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Section: Discussionmentioning

confidence: 99%

Long term beef production in extensive cow-calf systems in the tropical savannas of eastern Colombia

Vera-Infanzón

Ramírez-Restrepo

2020

Rev. Med. Vet. Zoot.

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“…To date, animal performance has been compared in steers ( 10 ), beef cows ( 11 ), and calves ( 12 ) under grazing and supplementation conditions, mainly reflecting a mixed effect of feed type and amounts. However, few studies have compared the growth performance in heifers by supplementing concentrate until now.…”

Section: Introductionmentioning

confidence: 99%

Dietary Concentrate Supplementation Alters Serum Metabolic Profiles Related to Energy and Amino Acid Metabolism in Grazing Simmental Heifers

et al. 2021

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Supplementation plays a vital role in the growth performance of grazing heifers. We investigated the effects of maize-based concentrate supplementation on the serum metabolome in grazing heifers. Twenty-four 7-month-old heifers (211.65 ± 4.25 kg BW) were randomly divided into a supplement (SUP) group and a control (CON) group. The results indicated that concentrate supplementation increased the final body weight (BW) of grazing heifers, and the average daily gain (ADG) was 61.5% (P = 0.011) higher in the SUP group than in the CON group. Serum concentrations of total protein (TP), triglyceride (TG), and leptin were higher in the SUP group than in the CON group (p < 0.05). Supplementation increased serum metabolites and amino acids and markedly altered glucose, lipid, and protein metabolism, which contributed to the heifer growth. Furthermore, by multivariate analysis, 45 serum metabolites were identified as significantly different between the two groups. Enrichment analysis revealed that arginine biosynthesis and tryptophan metabolism as well as glycerophospholipid metabolism were significantly enriched between the two groups. We concluded that the growth potential of heifers could be improved by maize-based concentrate supplementation, and the main biological pathways affected were those related to energy and amino acid metabolism.

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“…Similarly, Neves and colleagues [22] investigated the effect of increasing concentrations of concentrated supplementation on intake, nutrient digestibility and performance of crossbred steers during the dry period of the year. Based on the findings, the authors recommended protein supplementation of 0.5% body weight (BW) with 24% CP to obtain gains of up to 0.500 kg/ day for steers in pasture systems during the post-weaning phase in the dry season of the year.…”

Section: Performance Of Beef Cattle Fed Tropical Pasture Supplementedmentioning

confidence: 99%

Protein Supplementation Is Vital for Beef Cattle Fed with Tropical Pasture

Bezerra¹,

Ferreira²,

Edvan³

et al. 2018

Grasses as Food and Feed

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The production of beef on pasture is one of the potentials of Brazilian agriculture, mainly due to the territorial extension and climatic conditions. Therefore, the production of beef on tropical pastures mainly consists of the use of tropical forages; when correctly handled, forage plants show good productivity and improvement in the nutritive value. Among main factors that affect the performance of beef cattle fed on pastures, the availability and quality of the pasture stand first. In tropical regions, during the dry period of the year, the production of forage as well as its nutritive value is diminished. Hence, it is necessary to use protein supplements as a feed strategy to promote increased intake and improved nutrient utilization efficiency by animals. In view of this, by-products of biodiesel from oilseeds, such as peanuts, cottonseed and sunflower seeds, with high nutritional values can be used as an animal feed alternative to the protein sources commonly used for the formulation of supplements. Protein supplementation contributes to an increase in live weight gain as well as improvement in ruminal microbiota activity and, consequently, potentiates nutrient utilization efficiency in beef cattle fed with tropical pasture.

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Increasing levels of supplementation for crossbred steers on pasture during the dry period of the year

Cited by 13 publications

References 10 publications

Long term beef production in extensive cow-calf systems in the tropical savannas of eastern Colombia

Long term beef production in extensive cow-calf systems in the tropical savannas of eastern Colombia

Dietary Concentrate Supplementation Alters Serum Metabolic Profiles Related to Energy and Amino Acid Metabolism in Grazing Simmental Heifers

Protein Supplementation Is Vital for Beef Cattle Fed with Tropical Pasture

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