Intake and digestive responses by ruminants fed fresh temperate pasture supplemented with increased levels of sorghum grain: A comparison between cattle and sheep

Aguerre, Martín; Cajarville, Cecilia; Kozloski, Gilberto Vilmar; Repetto, José Luis

doi:10.1016/j.anifeedsci.2013.08.007

Cited by 25 publications

(32 citation statements)

References 24 publications

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“…In another paper derived from the present experiment, we reported that the increase in the percentage of supplementation led to differential responses in feed intake, nutrient digestibility, and microbial synthesis in cattle and sheep fed temperate forage (Aguerre et al., ). In cattle, the increase of sorghum in the diet was effective in enhancing feed intake and digestive utilisation of the diet, while in sheep it resulted in a high ruminal fermentation that reduced fibre digestibility and total OM intake (Aguerre et al., ). These different responses between species probably determined different patterns in the glucose homeostatic mechanisms in cattle and sheep.…”

Section: Introductionmentioning

confidence: 54%

“…() could be explained by greater glucose absorption from the small intestine and/or greater hepatic or renal gluconeogenesis. Supplemented cattle had greater starch intake than non‐supplemented ones (9.52 vs. 0.87 ± 0.08 g/kg of BW, p < 0.05; Aguerre et al., ). Because, according to Offner et al.…”

Section: Discussionmentioning

confidence: 96%

“…Finally, the greater plasma glucose and insulin and reduced glucagon concentrations and hepatic PCK1 mRNA would indicate a greater anabolism in supplemented cattle in comparison with the cattle fed only pasture. These results were associated with a greater OM intake and digestibility, greater rumen total VFA and propionate concentrations (Aguerre et al., ), and higher nitrogen retention in supplemented than non‐supplemented cattle and suggest that supplementation would result in a more productive response of cattle fed on pasture.…”

Section: Discussionmentioning

confidence: 97%

“…Organic matter intake decreased from 1780 to 1445 ± 111 g/day as pH decreased from 6.45 to 5.52 ± 0.15 with supplementation in sheep. However, at the same time, supplementation increased OM digestibility from 0.68 to 0.75 ± 0.02; thus, digestible OM intake did not differ between groups (Aguerre et al., ). In spite of the similar digestible OM intake between non‐supplemented and supplemented sheep, diet composition differed between groups.…”

Section: Discussionmentioning

confidence: 99%

“…In sheep, the metabolic‐endocrine response to sorghum supplementation was not as clear as in cattle because supplementation did not affect plasma glucose, insulin and insulin‐to‐glucagon ratio. Sorghum grain fed to sheep resulted in greater ruminal fermentation and reduced ruminal pH that decreased fibre digestibility and total OM intake (Aguerre et al., ). Organic matter intake decreased from 1780 to 1445 ± 111 g/day as pH decreased from 6.45 to 5.52 ± 0.15 with supplementation in sheep.…”

Section: Discussionmentioning

confidence: 99%

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Effect of sorghum grain supplementation on glucose metabolism in cattle and sheep fed temperate pasture

Aguerre

Carriquiry

Astessiano

et al. 2014

Animal Physiology Nutrition

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The aim of this work was to evaluate the effect of sorghum grain supplementation on plasma glucose, insulin and glucagon concentrations, and hepatic mRNA concentrations of insulin receptor (INSR), pyruvate carboxylase (PC), and phosphoenolpyruvate carboxykinase (PCK1) mRNA and their association with nutrient intake, digestion and rumen volatile fatty acids (VFA) in cattle and sheep fed a fresh temperate pasture. Twelve Hereford × Aberdeen Angus heifers and 12 Corriedale × Milchschaf wethers in positive energy balance were assigned within each species to one of two treatments (n = 6 per treatment within specie): non-supplemented or supplemented with sorghum grain at 15 g/kg of their body weight (BW). Supplemented cattle had greater plasma glucose concentrations, decreased plasma glucagon concentrations and tended to have greater plasma insulin and insulin-to-glucagon ratio than non-supplemented ones. Hepatic expression of INSR and PC mRNA did not differ between treatments but PCK1 mRNA was less in supplemented than non-supplemented cattle. Supplemented sheep tended to have greater plasma glucagon concentrations than non-supplemented ones. Plasma glucose, insulin, insulin-to-glucagon ratio, and hepatic expression of INSR and PC mRNA did not differ between treatments, but PCK1 mRNA was less in supplemented than non-supplemented sheep. The inclusion of sorghum grain in the diet decreased PCK1 mRNA but did not affect PC mRNA in both species; these effects were associated with changes in glucose and endocrine profiles in cattle but not in sheep. Results would suggest that sorghum grain supplementation of animals in positive energy balance (cattle and sheep) fed a fresh temperate pasture would modify hepatic metabolism to prioritize the use of propionate as a gluconeogenic precursor.

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Section: Introductionmentioning

confidence: 54%

Section: Discussionmentioning

confidence: 96%

Section: Discussionmentioning

confidence: 97%

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

See 3 more Smart Citations

Effect of sorghum grain supplementation on glucose metabolism in cattle and sheep fed temperate pasture

Aguerre

Carriquiry

Astessiano

et al. 2014

Animal Physiology Nutrition

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In vitro digestibility of mountain‐grown irrigated perennial legume, grass and forb forages is influenced by elevated non‐fibrous carbohydrates and plant secondary compounds

et al. 2020

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BACKGROUND Perennial legumes cultivated under irrigation in the Mountain West USA have non‐fibrous carbohydrate (NFC) concentrations exceeding 400 g kg−1, a level commonly found in concentrate‐based ruminant diets. Our objective was to determine the influence of NFC concentration and plant secondary compounds on in vitro rumen digestion of grass, legume and forb forages compared with digestion of their isolated neutral detergent fiber (NDF) fraction. Forages were composited from ungrazed paddocks of rotationally stocked, irrigated monoculture pastures between May and August 2016, frozen in the field, freeze‐dried, and ground. RESULTS The maximum rate (RMax) of gas production was greater for the legumes alfalfa (ALF; Medicago sativa L.) and birdsfoot trefoil (BFT; Lotus corniculatus L.) than for the legume cicer milkvetch (CMV; Astragalus cicer L.) the grass meadow brome (MBG; Bromus riparius Rehm.) and the non‐legume forb small burnet (SMB; Sanguisorba minor Scop.), and intermediate for the legume sainfoin (SNF; Onobrychis viciifolia Scop.). The RMax of isolated NDF was greatest for BFT and CMV, intermediate for ALF, SNF and SMB and least for MBG. CONCLUSIONS More than 900 g of organic matter kg−1 dry matter of legumes was digested after 96 h. Across forages, the extent of whole‐plant digestion increased with NFC and crude protein concentrations, decreased with NDF concentrations, and was modulated by secondary compounds. The extent of digestion of isolated NDF decreased with concentration of lignin and residual tannins. © 2020 Society of Chemical Industry

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Does it make a difference supplementing pasture silage with starchy concentrates or soyhulls on intake, digestion and rumen environment?

2018

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Intake and digestive responses by ruminants fed fresh temperate pasture supplemented with increased levels of sorghum grain: A comparison between cattle and sheep

Cited by 25 publications

References 24 publications

Effect of sorghum grain supplementation on glucose metabolism in cattle and sheep fed temperate pasture

Effect of sorghum grain supplementation on glucose metabolism in cattle and sheep fed temperate pasture

In vitro digestibility of mountain‐grown irrigated perennial legume, grass and forb forages is influenced by elevated non‐fibrous carbohydrates and plant secondary compounds

Does it make a difference supplementing pasture silage with starchy concentrates or soyhulls on intake, digestion and rumen environment?

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