Creatinine excretion and relationship with body weight of Nellore cattle

Silva, Luiz Fernando Costa e; Filho, Sebastião de Campos Valadares; Chizzotti, Antônio; Rotta, Polyana Pizzi; Prados, Laura Franco; Valadares, Rilene Ferreira Diniz; Zanetti, Diego; Braga, Jercyane Maria da Silva

doi:10.1590/s1516-35982012000300046

Cited by 70 publications

(32 citation statements)

References 10 publications

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“…Although creatinine excretion rates (coefficient; mg/kg of BW per d) among cows are variable as shown previously, diurnal variation of creatinine production in the body and excretion in urine within cow is likely small. Creatinine is produced from muscle and is rarely reused in the body (Silva et al, 2012), and the production of creatinine occurs at constant rate proportional to the mass of body muscle, resulting in a constant excretion of creatinine in urine (de Groot and Aafjes, 1960;Erb et al, 1977;Chizzotti et al, 2008). Therefore, the large diurnal variation of creatinine concentration in urine could be mainly attributed to diurnal changes in urine volume rather than diurnal changes in creatinine production.…”

Section: Resultsmentioning

confidence: 99%

Validating and optimizing spot sampling of urine to estimate urine output with creatinine as a marker in dairy cows

Lee

Morris

Dieter

2019

Journal of Dairy Science

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Section: Resultsmentioning

confidence: 99%

Validating and optimizing spot sampling of urine to estimate urine output with creatinine as a marker in dairy cows

Lee

Morris

Dieter

2019

Journal of Dairy Science

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“…The total daily urine volume was estimated as the ratio between the calculated daily urinary creatinine excretion and urine creatinine concentration. Daily creatinine excretion was calculated using the equation for estimation of urinary creatinine excretion (UCE): UCE (g/day)¼0.0345 Â SBW 0.9491 , where SBW¼shrunk body weight, which was obtained by Silva et al (2012). Creatinine was quantified by a colorimetric system based on the Jaffe reaction, using picrate and acids in commercial kits (Labtest s , Belo Horizonte, Minas Gerais).…”

Section: Experimental Procedures and Sample Collectionsmentioning

confidence: 99%

Intake, digestibility, and nitrogen efficiency in Holstein heifers fed treated jatropha (Jatropha curcas L.) kernel cake

et al. 2015

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a b s t r a c tThe effects of dietary substitution of soybean meal (SBM) with ethanol-treated jatropha kernel cake with seed shells (TJC) on nutrient intake and digestibility, nitrogen balance, pH, rumen ammonia nitrogen (NH 3 -N), serum levels of alanine aminotransferase (ALT, EC 2.6.1.2) and aspartate aminotransferase (AST, EC 2.6.1.1), and ruminal degradation kinetics of SBM and TJC crude protein (CP) in Holstein heifers were evaluated. Four rumen-cannulated heifers were distributed in a 4 Â 4 Latin square design, [body weight (BW) ¼ 379 72.13 kg]. Each experimental period lasted 15 days, with eight days for diet adaptation and seven days for data collection. The heifers were fed four complete isonitrogenous diets containing 65% corn silage and 35% concentrate on a dry matter (DM) basis. The treatments consisted of four levels of SBM substitution for TJC þurea/ammonium sulfate: 0, 33, 67, and 100%, on a DM basis. Ethanol treatment of the jatropha kernel cake removed 4 99% of the phorbol esters. The effective degradability of the CP for TJC was 425.6 g/kg. Intakes of DM, organic matter (OM), CP, ether extract (EE), neutral detergent fiber (NDF) and total digestible nutrients (TDN) decreased linearly with the substitution of SBM with TJC. The DM intakes were 18.0, 16.2, 16.8 and 11.3 g/kg BW for 0, 33, 67 and 100% substitution, respectively. There was no effect of the TJC inclusion level on nutrient digestibility. The rumen pH increased linearly with increasing substitution levels. The rumen NH 3 -N was not affected by the inclusion of jatropha (7.79 mg/dL overall mean). The amounts of ingested and absorbed nitrogen (N) and the N-balance decreased linearly with increasing TJC levels. The serum levels of ALT and AST were not affected by the inclusion of TJC in the diets. Despite the decrease in phorbol esters, ethanol treatment of jatropha kernel cake was not enough to promote adequate nutrient intake by the heifers.

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“…The non-specific chromogens were eliminated by a pre-reading because they had an immediate formation. The determination of urinary daily was done using the relation between the daily excretion of creatinine, adopting the equation proposed by Silva et al (2012) and its concentration in the "spot" samples. Where: CWF = corporal weight in fasting.…”

Section: Chemical Analysismentioning

confidence: 99%

Replacement of soybean meal by soybean in multiple supplements for beef heifers grazing Urochloa decumbens during the dry season

Almeida

Paulino

Marcondes

et al. 2015

SCA

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This study aimed to evaluate the effect of replacing soybean meal with soybean in multiple supplements on nutritional parameters, microbial efficiency and productive of heifers grazing in Urochloa decumbens during the drought period. Were used 39 crossbred heifers of initial age and initial weight of 21 months and 309.5±7 kg, respectively. The experimental design was completely randomized with four treatments with eight replicates, and a control treatment with seven replications. Two treatments had soybean meal as the protein source and two treatments had soybean as the protein source, containing 25% and 40% crude protein. The amount of supplement offered was 1.0 kg/animal/day. The animals of the control group received only mineral salt ad libitum. The supplemented animals had higher average daily gain (ADG) than control animals (P<0.10), and there was no difference in ADG among the supplements (P>0.10). There was an effect of supplementation (P <0.10) on intake of dry matter (DM), organic matter (OM), crude protein (CP), ether extract (EE), non-fiber carbohydrates (NFC), total digestible nutrients (TDN) and neutral detergent fiber corrected for ash and protein (NDF). There were no differences (P>0.10) on intake of OM and DM grazing between the supplemented and nonsupplemented. Supplementation improved DM digestibility and all constituents of the diet (P<0.10). It was found that the provision of multiple supplements optimises the performance of heifers grazing during the dry season, and that the substitution of soybean meal by soybean does not change productive performance of animals. ResumoObjetivou-se avaliar o efeito da substituição do farelo de soja pelo grão de soja sobre parâmetros nutricionais, eficiência de síntese microbiana e desempenho produtivo de novilhas Nelore sob pastejo em Urochloa decumbens durante o período da seca.Foram utilizadas 39 novilhas, com idade média inicial de 21 meses e peso médio inicial de 309,5±7 kg. O delineamento experimental foi o inteiramente casualizado, com quatro tratamentos com oito repetições, e o tratamento controle com sete repetições. Dois tratamentos tinham como fonte proteica o farelo de soja, e dois tratamentos tinham como fonte proteica o grão de sojain natura, contendo 25% e 40% de proteína bruta na MS. Ofertou-se 1 kg MS dia -1 de suplemento por animal. Os animais do grupo controle receberam apenas mistura mineral ad libitum. Os animais suplementados apresentaram GMD superior aos animais não suplementados (P<0,10), e não houve diferença de GMD entre os suplementados (P<0,10). Foi verificado efeito positivo da suplementação (P<0,10) sobre o consumo de matéria seca (MS), matéria orgânica (MO), proteína bruta (PB), extrato etéreo (EE), carboidratos não fibrosos (CNF), nutrientes digestíveis totais (NDT) e fibra em detergente neutro corrigida para cinzas e proteína (FDNcp). Não houve diferenças (P<0,10) no consumo de MO e MS de pasto entre os suplementados e os não suplementados. A suplementação melhorou a digestibilidade da MS e de todos os constituintes ...

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Creatinine excretion and relationship with body weight of Nellore cattle

Cited by 70 publications

References 10 publications

Validating and optimizing spot sampling of urine to estimate urine output with creatinine as a marker in dairy cows

Validating and optimizing spot sampling of urine to estimate urine output with creatinine as a marker in dairy cows

Intake, digestibility, and nitrogen efficiency in Holstein heifers fed treated jatropha (Jatropha curcas L.) kernel cake

Replacement of soybean meal by soybean in multiple supplements for beef heifers grazing Urochloa decumbens during the dry season

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