Creatinine as a metabolic marker to estimate urinary volume in growing goats

Santos, Stefanie Alvarenga; Prates, Luciana L.; Carvalho, Gleidson Giordano Pinto de; Santos, Antônio Carneiro Santana dos; Filho, Sebastião de Campos Valadares; Tosto, Manuela Silva Libânio; Mariz, Lays Débora Silva; Neri, F.; Sampaio, Mariana de Queiroz

doi:10.1016/j.smallrumres.2017.08.007

Cited by 13 publications

(10 citation statements)

References 25 publications

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“…In this study, averages between 13.52 and 15.15 mg/dl of serum urea N were similar to those values recommended by Valadares et al (1997), which represent a more efficient use of dietary protein for microbial protein synthesis and for increased DM digestibility. (Chizzotti et al, 2008;Costa e Silva et al, 2012;Santos et al, 2017;Schutte et al, 1981). The lack of the effect of collection day and CT on daily creatinine excretion agrees with the observations made by Valadares et al (1997), who, in feedlots, did not find any differences in creatinine excretions for 12, 24, 48 or 72 sampling hours.…”

Section: Ta B L Esupporting

confidence: 91%

Estimating purine derivatives and nitrogen compound excretion using total urine collection or spot urine samples in grazing heifers

Júnior

Rodrigues

Filho

et al. 2021

Animal Physiology Nutrition

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The study aimed to evaluate the excretion of purine derivatives (PDs) and nitrogen compounds (NCs) and their ratios with creatinine in supplemented Zebu heifers kept on pastures by comparing total urine collection and spot sampling. Five Nelore heifers (400 ± 15 kg) were used in a 5 × 5 Latin square design. The treatments were the amount of concentrate (220 g of crude protein/kg dry matter) offered (0, 3, 6, 9 and 12 g/kg BW). In each period, the total urine collection was performed continuously for 3 days (subsampled at intervals of 4 h

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Section: Ta B L Esupporting

confidence: 91%

Estimating purine derivatives and nitrogen compound excretion using total urine collection or spot urine samples in grazing heifers

Júnior

Rodrigues

Filho

et al. 2021

Animal Physiology Nutrition

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“…Urine volume was estimated based on urine creatinine content using a commercial kit and a spectrophotometer reading, using the equation urine volume (mL) = [(Body weight (kg) × 14.25) × 100]/creatinine concentration (mg/dL), assuming that each lamb excreted 14.25 mg of creatinine per kg of body weight [ 26 ]. For the estimation of ruminal microbial synthesis, analyses of purine derivatives (allantoin, uric acid, xanthine and hypoxanthine) were performed on urine samples.…”

Section: Methodsmentioning

confidence: 99%

Inclusion Prosopis juliflora Pod Meal in Grazing Lambs Diets: Performance, Digestibility, Ingestive Behavior and Nitrogen Balance

Almeida

Bagaldo

Soares

et al. 2022

Animals

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Prosopis juliflora is an arboreal legume that concentrates its nutritive value in pods (fruits), constituting a rich source of carbohydrates and with a crude energy concentration comparable to ground corn. Therefore, we aimed to evaluate the effect of inclusion of Prosopis juliflora pod meal (0 or control, 250, 500 and 750 g/kg total DM) as a replacement for ground corn in the diet of lambs on performance, digestibility, ingestive behavior, and nitrogen balance of lambs grazing in the Megathyrsus maximus pasture. Forty Santa Inês uncastrated lambs with an average body weight (BW) of 24.2 ± 0.55 kg were distributed in a completely randomized design. There was a linear increase in the non-fiber carbohydrates (NFC), ether extract (EE) and neutral detergent fiber (NDF) digestibility with Prosopis juliflora pod meal supplementation in the diet of the lambs. Dry matter (DM), crude protein (CP) and total digestible nutrients (TDN) intake, and digestibility and time spent ruminating were not affected by Prosopis juliflora meal supplementation. Prosopis juliflora pod meal inclusion increased time spent feeding and idling of lambs, however, without affecting spent time ruminating. Lambs fed with Prosopis juliflora pod meal presented greater final BW, gain: feed ratio, N-balance, microbial protein production ef-ficiency, N-urea urinary (NUU) and blood urea nitrogen (BUN). However, the average daily weight (ADG), total weight gain and hot carcass yield as well as N ingested, N excreted in feces and urine, total purines, ab-sorbed purines and N microbial production in lambs were not influenced by Prosopis juliflora pod meal inclusion. The Prosopis juliflora pod meal inclusion up to the 750 g/kg level in the concentrate supplement totally replace ground corn in the diet of grazing lambs improving the NFC intake and NDF digestibility, supplement acceptability, microbial protein production efficiency and consequently the performance. The addition of Prosopis juliflora pod meal as a replacement for ground corn in the concentrate does not influence the microbial protein production; however, there was an improvement in the efficiency of microbial synthesis.

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“…The average creatinine excretion of 0.197 mmol/kg body weight, previously determined by total urine collection in adult Hereford cows [22], was used to calculate urine volume as: urine volume (L) = (0.197 (mmol/kg body weight) × body weight (kg))/creatinine excretion (mmol). This choice is supported by [23,24], which according to their studies in ruminants (cattle, buffaloes, sheep and goats) and rabbits, urinary creatinine concentration is affected neither by diet nor by the physiological state of the animal but is excreted in proportion to the body weight of any of the species studied. To ensure the absence of animal weight change during the study, the goats were weighed each morning after complete milking.…”

Section: Sample Collection and Chemical Analysesmentioning

confidence: 99%

“…ECH4 was estimated from the equation of [23][24][25][26][27][28][29][30], using ECH4%GE = 3.67 + 0.062 × dE, where ECH4%GE is the energy lost in CH4 in kcal/100kcal GE, dE the apparent energy digestibility coefficient, and ECH4 (Kcal/animal//day) was obtained as GE ×% CH4. q = (GE -FE -UE − ECH4)/GE = ME/GE (7) and klm was estimated from 0.65 + 0.247 × (q − 0.63), INRA, 2018 [31].…”

Section: Calculations and Statistical Analysismentioning

confidence: 99%

Comparative Study of Intake, Apparent Digestibility and Energy and Nitrogen Uses in Sahelian and Majorera Dairy Goats Fed Hay of Vigna unguiculata

Sow

Niang

Camara

et al. 2020

Animals

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This study aimed to compare digestive and metabolic characteristics in Sahelian (S) and Majorera (M) goat breeds. Six lactating females from each breed, with an average weight 27.0 ± 1.93 and 23.7 ± 1.27 kg, respectively, were used. Cowpea hay, variety 58/74, was offered as sole feed ingredient, at a rate of 2 kg of fresh matter per animal per day. The animals were placed in metabolic cages and a digestibility test was conducted according to an adaptation period of 15 days and a collection period of 7 days. The daily chemical components offered and refused and recovered faeces, urine and milk were measured in order to assess energy and nitrogen utilization. The M and S goats had similar levels of dry matter (DM) intake as well as nutrient digestibility. On a metabolic weight basis, dry matter intake, gross energy intake, metabolizable and energy intake, digestible energy and energy lost as methane production were significantly higher (p < 0.01) in M than in S goats. Urinary energy excretion was similar (p = 0.9) between breeds, while faecal energy output was higher in M than in S goats. The milk energy output from the M goats was higher than that the S goats (p < 0.05). However, metabolizable to net energy conversion efficiency (klm) was not affected by breed (p = 0.37), while N intake, milk N yield and faecal N losses, relative to metabolic weight, were significantly higher (p < 0.05) in M than in S goats. Similarly, the percentage of dietary N intake excreted in urine (UNIN) was higher in S than in M breeds. The breed factor had no effect on N retained, N digestibility, urinary N and N use efficiency. In conclusion, the M and S goats were similar in terms of energy and nitrogen use efficiency, despite higher daily milk production and DM consumption in the M goat. This suggests that the M breed is possibly more dependent on a dense nutrition diet than the S breed but requires less maintenance nitrogen.

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Creatinine as a metabolic marker to estimate urinary volume in growing goats

Cited by 13 publications

References 25 publications

Estimating purine derivatives and nitrogen compound excretion using total urine collection or spot urine samples in grazing heifers

Estimating purine derivatives and nitrogen compound excretion using total urine collection or spot urine samples in grazing heifers

Inclusion Prosopis juliflora Pod Meal in Grazing Lambs Diets: Performance, Digestibility, Ingestive Behavior and Nitrogen Balance

Comparative Study of Intake, Apparent Digestibility and Energy and Nitrogen Uses in Sahelian and Majorera Dairy Goats Fed Hay of Vigna unguiculata

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