Effect of concentrate supplementation at pasture and inclusion of condensed tannins (Quebracho) in concentrates on lamb performance and faecal egg and worm counts

Dawson, L. E. R.; McCoy, M. A.; Edgar, H.W.J.; Carson, A. F.

doi:10.1016/j.livsci.2010.07.006

Cited by 11 publications

(9 citation statements)

References 30 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The effect of the inclusion of quebracho in the concentrate during the fattening period on carcass weights varies between studies. In agreement with the present results, Dawson et al 19 reported similar carcass characteristics when 0, 80 or 100 g of quebracho per kilogram fresh matter was included in the diet of lambs. However, several studies reported a lower carcass weight when forages with different CT contents were included, probably as a consequence of a reduction I the BW at slaughter.…”

Section: Carcass Characteristicssupporting

confidence: 93%

“…The effect of the inclusion of CTs in the concentrate on weight gains depends on both its dose and the CP content of the diet . The inclusion of quebracho in the concentrate fed to weaned grazing lambs increased weight gains when they were fed a concentrate low in CP, but not when they were fed a high CP concentrate . According to the aforementioned study, when CP was high, quebracho did not contribute to any further protein supply in the small intestine.…”

Section: Discussionmentioning

confidence: 89%

“…18 The inclusion of quebracho in the concentrate fed to weaned grazing lambs increased weight gains when they were fed a concentrate low in CP, but not when they were fed a high CP concentrate. 19 According to the aforementioned study, when CP was high, quebracho did not contribute to any further protein supply in the small intestine. In a diet with intermediate CP content (175 g kg −1 ), an inclusion of 20 g kg −1 quebracho increased weight gains, but not inclusions of 10 and 30 g kg −1 quebracho.…”

Section: Animal Performancementioning

confidence: 92%

See 2 more Smart Citations

Effects of feeding strategies during lactation and the inclusion of quebracho in the fattening on performance and carcass traits in light lambs

et al. 2018

View full text Add to dashboard Cite

show abstract

Section: Carcass Characteristicssupporting

confidence: 93%

Section: Discussionmentioning

confidence: 89%

Section: Animal Performancementioning

confidence: 92%

See 1 more Smart Citation

Effects of feeding strategies during lactation and the inclusion of quebracho in the fattening on performance and carcass traits in light lambs

et al. 2018

View full text Add to dashboard Cite

show abstract

“…Finishing lambs on a high plane of nutrition has been reported to increase carcass fat content, especially in early-maturing hill breed types of low lean growth potential (Carson et al, 2001). In agreement with Dawson et al (2011), there was no effect of concentrate supplementation on fat score in grass-fed lambs, although there was evidence of a dietary effect on fat partitioning with lambs fed concentrate-based diets having a greater weight of abdominal fat and a greater depth of subcutaneous fat on the lateral surfaces of the loin and leg compared with those fed grass-based diets. However, it should be noted that fat levels were acceptable across all treatments and that the higher level of fat in concentrate-fed lambs is unlikely to influence consumer choice when purchasing lamb.…”

Section: Discussionsupporting

confidence: 69%

Effects of supplementation with fish oil and barium selenate on performance, carcass characteristics and muscle fatty acid composition of late season lamb finished on grass-based or concentrate-based diets

Annett

Carson

Fearon

et al. 2011

Animal

Self Cite

View full text Add to dashboard Cite

The objectives of this study were to investigate the effects of fish oil supplementation on performance and muscle fatty acid composition of hill lambs finished on grass-based or concentrate-based diets, and to examine the interaction with selenium (Se) status. In September 2006, 180 entire male lambs of mixed breeds were sourced from six hill farms after weaning and finished on five dietary treatments: grazed grass (GG), grass 10.4 kg/day cereal-based concentrate (GC), grass 10.4 kg/day cereal-based concentrate enriched with fish oil (GF), ad libitum cereal-based concentrate (HC) and ad libitum fish oil-enriched concentrate (HF). Within each treatment, half of the lambs were also supplemented with barium selenate by subcutaneous injection. At the start of the trial, the proportion of lambs with a marginal (,0.76 mmol/l) or deficient (,0.38 mmol/l) plasma Se status was 0.84 and 0.39, respectively. Compared with control lambs, GG lambs treated with Se had higher ( P , 0.01) plasma Se levels, whereas erythrocyte glutathione peroxidase activity was higher ( P , 0.01) for Se-supplemented lambs fed diets GG and GF. However, Se supplementation had no effects on any aspect of animal performance. Fish oil increased ( P , 0.05) levels of 22:5n-3 and 22:6n-3 in the Longissimus dorsi of HF lambs but otherwise had no effect on the health attributes of lamb meat. There were no significant effects of fish oil on dry matter intake, animal performance or lamb carcass characteristics. Daily carcass weight gain (CWG; P , 0.001), carcass weight ( P , 0.01) and conformation score ( P , 0.01) increased with increasing concentrate inputs. Lambs fed concentrate-based diets achieved a higher mean CWG ( P , 0.001), dressing proportion ( P , 0.001) and carcass weight ( P , 0.011), and were slaughtered up to 8.3 days earlier ( P , 0.05) and at 1.2 kg lower ( P , 0.05) live weight than pasture-fed lambs. However, carcasses from grass-fed lambs contained lower levels of perinephric and retroperitoneal fat ( P , 0.05), and had less fat over the Iliocostalis thoracis ( P , 0.001) and Obliquus internus abdominis ( P , 0.05). Meat from grass-fed lambs also had lower levels of 18:2n-6 and total n-6 fatty acids compared with those finished indoors. The results of this study demonstrate that fish oil supplementation has some benefits for the health attributes of meat from lambs fed concentrate-based diets but not grass-based diets. Supplementing Se-deficient lambs with barium selenate will improve Se status of lambs fed zero-concentrate diets, but has no additional benefit when lambs are already consuming their daily Se requirement from concentrates or when fish oil-enriched diets are fed.

show abstract

“…Using tannin containing feeds in animal ration may improve the nutrient utilization and productivity of ruminants. In an experiment, inclusion of red quebracho (Schinopsis quebracho-Colorado (Schlecht) and Barkley & T. Meyer) tannin in the diet increased the live weight gain (LWG) of lambs in comparison to control group (Dawson et al, 2010). To our best knowledge, no information is available on the effect of RW and its tannins on performance of growing lambs and rumen fermentation parameters.…”

Section: Introductionmentioning

confidence: 99%

Effect of different levels of raisin waste on performance, nutrients digestibility and protozoal population of Mehraban growing lambs

Saremi

Alipour

Azarfar

et al. 2014

Span. j. agric. res.

View full text Add to dashboard Cite

The aim of this study was to assess the effects of different inclusion levels of raisin waste (RW) in the diet on the animal performance and ruminal fermentation parameters of growing lambs. Four levels of RW inclusion (i.e., R 0 , R 1 , R 2 and R 3 for 0, 100, 200 and 300 g RW kg -1 dry matter of diet, respectively) were tested. The experimental diets were fed to 24 male lambs (six months old) and six animals were allocated to each treatment. In the first experiment, effects of different levels of RW on the animals' performance, some rumen parameters and protozoa populations were studied. In the second experiment, the apparent total tract digestibility of diets and nitrogen balance were measured. The highest final body weights were observed for the R 2 and R 3 diets. The R 3 diet had the lowest dry matter intake (1156 vs. 1303 g day -1 for R 3 and R 0 , respectively) and feed conversion rate (6.4 vs. 8.7 for R 3 and R 0 , respectively). Total number of protozoa increased with the addition of RW, but Epidinium spp. completely disappeared with the R 3 diet. Inclusion of RW at levels higher than 200 g RW kg -1 DM of diet significantly reduced crude protein (p = 0.042) and neutral detergent fiber digestibility (p = 0.049). Our findings showed that RW could be included in the diets of growing lambs up to 200 g kg -1 DM without compromising their production performance.

show abstract

Effect of concentrate supplementation at pasture and inclusion of condensed tannins (Quebracho) in concentrates on lamb performance and faecal egg and worm counts

Cited by 11 publications

References 30 publications

Effects of feeding strategies during lactation and the inclusion of quebracho in the fattening on performance and carcass traits in light lambs

Effects of feeding strategies during lactation and the inclusion of quebracho in the fattening on performance and carcass traits in light lambs

Effects of supplementation with fish oil and barium selenate on performance, carcass characteristics and muscle fatty acid composition of late season lamb finished on grass-based or concentrate-based diets

Effect of different levels of raisin waste on performance, nutrients digestibility and protozoal population of Mehraban growing lambs

Contact Info

Product

Resources

About