Influência da monensina e levedura sobre parâmetros ruminais e metabólicos em cordeiros semiconfinados

Tabeleão, Vinícius Coitinho; Pino, Francisco Augusto Burcket Del; Goulart, Maikel Alan; Schwegler, Elizabeth; Moura, Sandra Vieira de

doi:10.4025/actascianimsci.v30i2.4687

Cited by 3 publications

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“…In Brazil, the evaluation of the metabolic profile through analysis and assessment of indicators of protein and energy profiles as well as of enzymes that are related to liver activity (aspartate aminotransferase [AST] and γ-glutamyl-transferase [GGT]) has made it possible to differentiate the nutritional status of sheep under various feeding regimens (Tabeleão et al, 2008). This confirms the importance of evaluating the metabolic profile as a way to monitor nutritional status and understand responses in the productive performance of lambs in different production systems.…”

Section: Introductionmentioning

confidence: 99%

Metabolic profile and histopathology of kidneys and liver of lambs fed silages of forages adapted to a semi-arid environment

Campos¹,

Carvalho²,

Santos³

et al. 2019

SA J. An. Sci.

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Thirty-two mixed-breed ram lambs (average age, 5.6 ± 0.4 months, and average live weight, 17.61 ± 2.63 kg) were used to evaluate the effect of diets containing silages of forages adapted to a semi-arid environment on the metabolic profile in serum and the histopathological assessment of liver and kidney tissues of the lambs. Lambs were allocated, in a completely randomised design, to four treatments (silage of old man saltbush (Atriplex nummularia Lind), buffelgrass (Cenchrus ciliaris), gliricidia (Gliricidia sepium) and 'pornunça' (Manihot sp.). The feedlot period was 49 days, and animals were slaughtered at an average weight of 27 ± 4.6 kg. On the last day of the experiment, blood was collected from the jugular vein of all animals to measure the protein, metabolic and energy profiles of the lambs. At slaughter, kidney and liver samples were collected for histopathological examination. The consuming of the diet containing buffelgrass silage resulted in a significantly higher activity of alanine-aminotransferase (30.14 IU/L) and the concentrations of urea (44.25 mg/dL), creatinine (0.94 mg/dL) and albumin (4.48 g/dL) in serum. Diets containing gliricidia silage resulted in significantly higher gamma-glutamyl transferase activity (92.0 IU/L), while the diets with pornunça silage resulted in higher serum levels of triglycerides (37.85 mg/dL). The diets had no effect on aspartate-aminotransferase enzyme activity and total protein, cholesterol and globulin concentrations, or the albumin : globulin ratio in serum. Mild congestion, necrosis and foci of mineralisation were observed in the kidneys of animals fed diets containing old man saltbush (50%) and pornunça (25%) silages, and mild fatty degeneration and mild mononuclear inflammatory infiltrate in their livers. In conclusion, diets containing silages of forages that are adapted to semi-arid environments may be used for feeding lambs, given the absence of dysfunctioning plasmatic levels of liver enzymes and energy and protein profiles. Additionally, kidney failure was not observed in lambs fed these diets during the feedlot period.

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Section: Introductionmentioning

confidence: 99%

Metabolic profile and histopathology of kidneys and liver of lambs fed silages of forages adapted to a semi-arid environment

Campos¹,

Carvalho²,

Santos³

et al. 2019

SA J. An. Sci.

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“…On the final experimental day, using an oral gavage adapted to a vacuum pump, 100 mL rumen liquid were collected after animals were fasted for 12 hours (Tabeleão et al, 2008). The pH of the rumen fluid was measured immediately after collection using a digital potentiometer; an average value of 7.0±0.15 was obtained.…”

Section: Methodsmentioning

confidence: 99%

Intake and digestibility of lamb fed diets containing banana crop residues

Carmo

Barbosa

Geraseev

et al. 2018

Pesq. agropec. bras.

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The objective of this work was to evaluate the effects of the inclusion of banana leaf or pseudostem hay in complete diets on the intake, nutrient digestibility, and ruminal short-chain fatty acid production by lambs. A total of 30 Santa Inês x Dorper lambs were allocated to five treatments: 400 g kg-1 Cynodon spp. hay; 200 g kg-1 banana leaf hay + 200 g kg-1 Cynodon spp. hay; 400 g kg-1 banana leaf hay; and 200 g kg-1 banana pseudostem hay + 200 g kg-1 Cynodon spp. hay and 400 g kg-1 banana pseudostem hay. The inclusion of banana crop residues had no effect on dry matter intake, organic matter, crude protein, neutral detergent fiber (NDF), acid detergent fiber, non-fiber carbohydrates, and total carbohydrates, which presented averages of 1,086.8, 1,000.1, 182.7, 374.3, 194.7, 390.2, and 771.6 g per day, respectively. There was a reduction in NDF digestibility with the inclusion of 400 g kg-1 leaf hay, but no differences were observed in the other treatments. The addition of both banana leaf and pseudostem hay can replace Cynodon spp. hay without affecting intake, nutrient digestibility, and ruminal concentration of short-chain fatty acids.

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“…Os teores séricos de Ca, Mg, creatinina (Creat) e glicose (Gli) foram analisados por métodos colorimétricos, usando kits comerciais 4 [23]. Os AGNE 5 foram mensurados pelo micro-método descrito por Ballou et al [1] e a insulina (Ins) por meio de kit comercial de imunoensaio enzimático 6 .…”

Section: Coleta De Amostras E Análisesunclassified

Calcium and Magnesium Urinary Excretion in Dairy Cows with Different Fee of Glucose Metabolization

Schwegler

Montagner

Schmitt

et al. 2018

Acta Scientiae. Vet.

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Background: The post-partum period in dairy cows is accompanied by a low glucose metabolism in adipose tissue and skeletal muscle tissue, being glucose conducted to the milk production. In humans, low glucose metabolism is associated with metabolic syndromes, the high glucose levels reduce tubular reabsorption of Magnesium (Mg) and Calcium (Ca), leading to hypomagnesemia and hypocalcemia. These minerals are important to the dairy cow, as their decrease leads to diseases. The aim of this study was to evaluate the relationship between glucose metabolism rate with the urinary excretion of Ca and Mg in multiparous dairy cows during the post-partum period.Materials, Methods & Results: Twenty dairy cows were used from a commercial farm southern Brazil, in the semi-extensive system. Glucose tolerance tests were performed (TTG) on day 9 relative to calving. The cows were categorized into three groups according to the glucose metabolism rate (area under the glucose curve, glucose half-life and glucose consumption rate): High Glucose Metabolization (GA); Intermediate Glucose Metabolizing (GI); and Low Glucose Metabolization (GL). Blood and urine samples were collected on days 0, + 3, + 6, + 9, +16 and +2 3 in relation to calving for to determine the levels of Ca, Mg, insulin (Ins), non-esterified fatty acids (NEFA) and Glu. In urine was evaluated the excretion of Ca and Mg. The cows were milked twice a day (at 3:00 a.m. and 3:00 p.m.) and the milk yield (kg/cow) was recorded daily and averages were generated every five days from day 15 to day 60 postpartum. The statistical analyses were performed with the MIXED procedure to assess the main effect of group, time (in days) and their interaction by using version 9.2 SAS software. The influence of the different rates of glucose metabolism on milk production was observed, the GB group had a production than GH group (30.88 ± 1.44 kg vs 23.96 ± 1.43 kg, P < 0.01), but did not differ from GI. The GL group showed higher levels of Glu compared to GA (P < 0.05). The plasma Ca levels were higher in GL (P < 0.05) compared with GH. The NEFA, insulin, and excretion of minerals did not differ between groups (P > 0.05).Discussion: The low glucose metabolism in humans causes an increase in the excretion of Ca and Mg urine, however, in the animals studied, these changes were not observed. This result can be attributed to the fact that insulin resistance is transitory in dairy cattle. The higher glucose levels in the GL group are related due to the lower capacity of glucose entry in the peripheral tissues (adipose and skeletal muscle), which reflected in the higher milk production observed this group. However, the higher calcium concentrations were not expected, since the release of insulin by β-pancreatic cells is dependent on calcium. Possibly, these higher calcium levels in GB, are related to higher milk production, requiring a greater amount of calcium for the production of casein, increasing bone mobilization, intestinal absorption. The energy metabolites, non-esterified fatty acids and insulin, did not differ between groups, suggesting that the animals did not present different metabolic conditions. We conclude that multiparous dairy cows with low glucose metabolism rate (GB) have higher levels of glucose after delivery and increased milk production. The metabolism rate of glucose did not influence the excretion of the Ca and Mg minerals.

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Influência da monensina e levedura sobre parâmetros ruminais e metabólicos em cordeiros semiconfinados

Cited by 3 publications

References 1 publication

Metabolic profile and histopathology of kidneys and liver of lambs fed silages of forages adapted to a semi-arid environment

Metabolic profile and histopathology of kidneys and liver of lambs fed silages of forages adapted to a semi-arid environment

Intake and digestibility of lamb fed diets containing banana crop residues

Calcium and Magnesium Urinary Excretion in Dairy Cows with Different Fee of Glucose Metabolization

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