Excretion patterns of titanium dioxide and chromic oxide in duodenal digesta and feces of ewes

Myers, Wendy D.; Ludden, P. A.; Nayigihugu, V.; Hess, B. W.

doi:10.1016/j.smallrumres.2005.02.010

Cited by 40 publications

(26 citation statements)

References 11 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Additionally, the fecal contents of external markers decreased below average contents during vespertine and nocturnal periods. Similar patterns were reported for chromic oxide by Smith & Reid (1955), Brisson et al, (1957) and Hooper (1978); and for titanium dioxide by Myers et al (2006) and Glindemann et al (2009). On the other hand, the internal markers, even presented decrease in contents during vespertine period, kept fecal contents close to average concentration in the nocturnal period (Figures 1 and 2).…”

Section: Resultssupporting

confidence: 85%

“…Currently, some legal aspects regarding chromic oxide utilization has been highlighted due to its possible carcinogenic properties (Myers et al, 2006), being not approved for animal or human feeding by Food and Drug Administration (Titgmeyer et al, 2001).…”

Section: Introductionmentioning

confidence: 99%

“…The titanium dioxide (TiO 2 ) has been suggested as an alternative to oxide chromic in ruminant assays (Titgemeyer et al, 2001;Myers et al, 2006;Glindemann et al, 2009;Sampaio et al, 2011). This compound is usually present in some products for human feeding and has no limitation concerning its inclusion in animal food (Sampaio et al, 2011).…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Fecal excretion patterns and short term bias of internal and external markers in a digestion assay with cattle

et al. 2011

View full text Add to dashboard Cite

The objective of this work was to evaluate the fecal excretion profile and the short term bias of the external markers chromic oxide and titanium dioxide and the internal markers indigestible dry matter (iDM), indigestible neutral detergent fiber (iNDF) and indigestible acid detergent fiber (iADF) in a digestion trial with cattle fed different diets. Fourteen F1 Red Angus × Nellore bulls averaging 12 months old and 287 kg were kept in individual stalls. The animals were fed elephant grass silage, corn silage or signal grass hay, supplemented or not with 20% of concentrate mixture. The experiment consisted of two 13-day experimental periods according to a 2 × 2 Latin square design with seven squares grouping. The animals received 10 g of chromic oxide and 10 g of titanium dioxide through esophageal sounder daily. Fecal grab samples were obtained directly from the rectum of the animals at 1:30 a.m., 3:00 a.m., 4:30 a.m., 6:00 a.m., 7:30 a.m., 9:00 a.m., 10:30 a.m., 12:00 p.m., 1:30 p.m., 3:00 p.m., 4:30 p.m., 6:00 p.m., 7:30 p.m., 9:00 p.m., 10:30 p.m. and 12:00 a.m. There was no effect of forages or concentrate levels on the dimension of excretory cycle. The fundamental period of excretory cycle was 15.06 and 18.66 hours for chromic oxide and titanium dioxide, respectively and 9.93, 9.29 and 10.55 hours for iDM, iNDF and iADF, respectively. The oscillation range was higher for external markers. Considering the characteristics of all evaluated markers together, it is recommended fecal sampling designs with at least four collections, distributed during the day or only in the diurnal period for obtaining fecal excretion estimates free of short term bias.

show abstract

Section: Resultssupporting

confidence: 85%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Fecal excretion patterns and short term bias of internal and external markers in a digestion assay with cattle

et al. 2011

View full text Add to dashboard Cite

show abstract

“…Instead, the prediction is only slightly improved by a marker administration twice daily. TiO 2 concentration in duodenal digesta in the study by Myers et al (2006) increased until a maximum at 2 to 4 h after dosing and subsequently decreased until the next dosing. Hence, collecting the feces excreted from evening (16:30 h) until morning (6:30 h) feeding in our study included both, the maximum and the minimum fecal marker concentration.…”

Section: Discussionmentioning

confidence: 77%

“…Table 6 Dry matter (DM), organic matter (OM), digestible organic matter intake (DOM), neutral detergent fiber (NDF), acid detergent fiber (ADF), metabolizable energy (ME), crude protein (CP), and phosphorus (P) concentration of feed stuffs offered to goats during two feeding trials conducted on Al Jabal Dickhoefer, Mahgoub and Schlecht application and/or of feces collection largely determine the accuracy of fecal excretion estimates. Hence, Myers et al (2006) assumed that a frequent marker administration reduces variation in fecal marker concentration, because the marker is mixed more homogeneously with the digesta. Similarly, Glindemann et al (2009) found that two pulse doses per day resulted in an equal TiO 2 concentration in fecal grab samples collected at different times during the day.…”

Section: Discussionmentioning

confidence: 99%

Adjusting homestead feeding to requirements and nutrient intake of grazing goats on semi-arid, subtropical highland pastures

Dickhoefer

Mahgoub

Schlecht

2011

Animal

View full text Add to dashboard Cite

Intensive livestock grazing can largely deplete the natural fodder resources in semi-arid, subtropical highlands and together with the low nutritional quality of the pasture vegetation limit the growth and production of grazing animals. To evaluate the contribution of homestead feeding of grazing goats to rangeland conservation and animal nutrition, two researcher-managed on-farm trials were conducted in a mountain oasis of Northern Oman. Goats' feed intake on pasture in response to four rations containing different levels of locally available green fodder and concentrate feeds was determined in six male goats each (35 6 10.2 kg body weight (BW)). Total feed intake was estimated using titanium dioxide as external fecal marker as well as the diet organic matter (OM) digestibility derived from fecal crude protein concentration. The nutritional quality of selected fodder plants on pasture was analyzed to determine the animals' nutrient and energy intake during grazing. The pasture vegetation accounted for 0.46 to 0.65 of the goats' total OM intake (87 to 107 g/kg 0.75 BW), underlining the importance of this fodder resource for the husbandry system. However, metabolizable energy (7.2 MJ/kg OM) and phosphorus concentrations (1.4 g/kg OM) in the consumed pasture plants were low. Homestead feeding of nutrient and energy-rich by-products of the national fishery and date palm cultivation to grazing goats increased their daily OM intake ( R 2 5 0.36; P 5 0.005) and covered their requirements for growth and production. While the OM intake on pasture was highest in animals fed a concentrate-based diet ( P 5 0.003), the daily intake of 21 g OM/kg 0.75 BW of cultivated green fodder reduced the animals' feed intake on pasture ( R 2 5 0.44; P 5 0.001). Adjusting homestead supplementation with locally available feedstuffs to the requirements of individual goats and to the nutritional quality of the pasture vegetation improves animal performance and eases the grazing pressure exerted on the natural vegetation. This management strategy therefore appears to be a valuable alternative to intensive livestock feeding in zero-grazing systems and may contribute to sustainable livestock production in ecologically fragile, semi-arid mountain regions.

show abstract

Effect of marker dosage frequency and spot fecal sampling frequency in the prediction accuracy of fecal output using chromic oxide and titanium dioxide in grazing BON steers

et al. 2021

Trop Anim Health Prod

View full text Add to dashboard Cite

Excretion patterns of titanium dioxide and chromic oxide in duodenal digesta and feces of ewes

Cited by 40 publications

References 11 publications

Fecal excretion patterns and short term bias of internal and external markers in a digestion assay with cattle

Fecal excretion patterns and short term bias of internal and external markers in a digestion assay with cattle

Adjusting homestead feeding to requirements and nutrient intake of grazing goats on semi-arid, subtropical highland pastures

Effect of marker dosage frequency and spot fecal sampling frequency in the prediction accuracy of fecal output using chromic oxide and titanium dioxide in grazing BON steers

Contact Info

Product

Resources

About