Can urea associated with alternative carbohydrate sources replace conventional concentrate for lambs?

Santos, Kelly Cristina dos; Carvalho, Francisco Fernando Ramos de; Magalhães, André Luíz Rodrigues; Silva, Felipe José Santos da; Cardoso, Daniel Barros; Sousa, Daurivane Rodrigues; Silva, Letycia Cristine Fernandes Lira da; Nascimento, Andreza Guedes de Oliveira; Batista, Ângela Maria Vieira

doi:10.1016/j.livsci.2020.104172

Cited by 3 publications

(3 citation statements)

References 40 publications

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“…The reduction in the concentration of urinary creatinine provided by diets containing cactus cladodes is due to the increase in water intake (overhydration) and, therefore, in the production of urine (González and Scheffer, 2002;Pordeus Neto et al, 2016). The higher UEI of uric acid observed in animals fed with varieties of cactus cladodes is due to the increase in microbial protein synthesis, a result already found in studies using cactus cladodes in the sheep diets (Cardoso et al, 2019;Santos et al, 2020). The lower urinary Ca concentrations caused by diets containing cactus cladodes, in addition to the lower UEI and FER caused by Miúda cactus cladodes, are probably related to the high absorption rates of this element by sheep that receive cactus-based diets (Santos et al, 2009;Lucena, 2011;Silva, 2018), causing animals to excrete less Ca in the urine.…”

Section: Discussionmentioning

confidence: 87%

Section: Discussionmentioning

confidence: 99%

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Water balance and urinary parameters of lambs fed diets containing cactus cladodes varieties

Silva

Lopes²,

Carvalho³

et al. 2022

J. Agric. Sci.

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The water balance and urinary parameters of lambs fed diets containing cactus cladodes varieties were evaluated. Thirty-six uncastrated male Santa Inês lambs (22.0 ± 2.9 kg initial body weight) were distributed in a completely randomized design, with three treatments and 12 replicates. The animals were fed a control diet (Tifton-85 hay as exclusive roughage), Miúda or Orelha de Elefante Mexicana (OEM) cactus-based diets. Urine samples were collected 45 days after the introduction of the tested diets, and voluntary water intake was measured over 10 days, during the experimental period. Diets containing Miúda or OEM cactus caused a reduction of 68.35 and 77.03% in voluntary water intake, respectively. In addition, the Miúda cactus cladodes caused urinary alkalinization (pH = 8.14) and reduction in the urinary excretion index (UEI) and on the fractional excretion rate (FER) of total calcium (Ca). The diets with OEM cactus cladodes caused higher oxalates intake (6.21 g/day) and increase in urinary volume. Regardless of the variety, there was a reduction in the urinary concentrations of urea, creatinine, total proteins, Ca, phosphorus (P), UEI of urea and P, as well as in FER of P, compared to the control diet. Urinary Mg content and UEI of uric acid and Mg increased and FER of P decreased by diets supplemented with different varieties of cactus cladodes. In conclusion, the cactus cladodes increased water intake and retention, and diuresis in lambs, altered urine parameters, without compromising kidney function.

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Section: Discussionmentioning

confidence: 87%

Section: Discussionmentioning

confidence: 99%

Water balance and urinary parameters of lambs fed diets containing cactus cladodes varieties

Silva

Lopes²,

Carvalho³

et al. 2022

J. Agric. Sci.

View full text Add to dashboard Cite

show abstract

“…However, some factors such as the high moisture (85.0 to 90.8%) of cactus pear (Monteiro et al, 2014;Monteiro et al, 2019;Santos et al, 2020;Moura et al, 2020) is considered a limiting factor in the fermentation process, even with the presence of mucilage. In this context, the search for alternatives that favor the preservation and optimization of the nutritional input of the food to be preserved is necessary.…”

Section: Introductionmentioning

confidence: 99%

The inclusion of cactus pear changes the fermentation process, chemical composition and aerobic stability of arboreal cotton silages

Melo¹,

Leite²,

Lima³

et al. 2022

J PROF ASSOC CACTUS

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The objective was to evaluate the fermentation process, nutritional quality, and aerobic stability of mixed silages of arboreal cotton and cactus pear. This was a completely randomized design, with five levels of inclusion of cactus pear (0, 15, 30, 45, and 60%) in the arboreal cotton silage and four replications per treatment, totaling 20 experimental units. Data were submitted to analysis of variance and regression at a 5% probability level for type I error. The inclusion of cactus pear resulted in increased losses from gases (P<0.001), effluents (P<0.001), buffering capacity (P<0.001), aerobic stability (P = 0.010), and pH upward trend (P<0.001). There was a decreasing linear effect on dry matter recovery (P<0.001), pH (P<0.001), ammonia nitrogen (P <0.001), the maximum difference in the temperature of the silage in relation to the environment (P = 0.005) and maximum pH (P<0.001) of silages. The inclusion of cactus pear affected the maximum temperature (P<0.001) of silages in a quadratic way. There was a decreasing linear effect of dry matter (P<0.001), ether extract (P<0.001), Organic matter (P<0,001), crude protein (P = 0,002) and neutral detergent fiber corrected for ash and protein (P = 0.030). The use of cactus pear promoted an increasing linear effect for the levels of mineral matter (MM) (P<0.001), corresponding to an increase of 0,271%, for each 1% inclusion of cactus pear. The increase in the proportions of cactus pear in the silages promoted an increasing linear effect for mineral matter (P<0,001). The inclusion of cactus pear by up to 60% in arboreal cotton silages alters the fermentation profile with increased fermentation losses and nutritional reduction. However, it still presents characteristics of good quality silages.

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Urea as a substitute for soybean meal in growing lambs fed diets containing buffel grass hay

Silva

Santos

Ribeiro

et al. 2021

New Zealand Journal of Agricultural Research

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Can urea associated with alternative carbohydrate sources replace conventional concentrate for lambs?

Cited by 3 publications

References 40 publications

Water balance and urinary parameters of lambs fed diets containing cactus cladodes varieties

Water balance and urinary parameters of lambs fed diets containing cactus cladodes varieties

The inclusion of cactus pear changes the fermentation process, chemical composition and aerobic stability of arboreal cotton silages

Urea as a substitute for soybean meal in growing lambs fed diets containing buffel grass hay

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