In situ dry matter and crude protein degradation kinetics of some forages in Eastern Turkey

Turgut, Leyla; Yanar, Mete

doi:10.1016/s0921-4488(03)00261-x

Cited by 11 publications

(23 citation statements)

References 14 publications

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“…The mean DegN for the three sainfoin forages (0.62) in the present work was close to the value reported by O. Necdet (personal communication), whereas Turgut and Yanar (2004) found a DegN of 0.70 for lucerne and sainfoin hays. As expected, the DegN for lucerne decreased with the growth stage, while small differences were observed among sainfoin fresh forages (S 3 G, P , 0.001), probably as a result of the opposite effects of growth stage and variation in CT content.…”

Section: Rumen Degradabilitysupporting

confidence: 90%

In vivo and in situ measurements of the digestive characteristics of sainfoin in comparison with lucerne fed to sheep as fresh forages at two growth stages and as hay

Aufrere

Dudilieu

Poncet

2008

Animal

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In vivoandin situdigestive characteristics of sainfoin (Onobrychis viciifoliaL., a tannin-rich forage) and lucerne (Medicago sativa L., a tannin-free forage) were compared to evaluate the effects of condensed tannins (CT) and growth stage (vegetativev. early flowering) in experiment 1. In experiment 2, the hays of the two forages, harvested at early flowering, were compared. Ingestibility, organic matter digestibility (OMD) and nitrogen (N) retention were measured in sheep fed sainfoin and lucerne fresh forages and hays. The loss of dry matter (DM) and N from polyester bags suspended in the rumen, abomasum and small intestine was also measured using rumen fistulated sheep and other intestine fistulated sheep. Nitrogen content was lower in sainfoin than in lucerne. Content of CT in sainfoin decreased with growth stage (3.5 to 2.5 g CT/kg DM) and was lower for sainfoin hay (0.6 g CT/kg DM). Ingestibility and OMD did not differ between fresh-fed forage species. Total N tract digestibilityin vivowas much lower for sainfoin than for lucerne fresh forages (mean value 0.540v. 0.721,P< 0.001) and for sainfoin hay than lucerne hay (0.464v. 0.683,P< 0.001). In both species, N digestibility was not altered by growth stage. The rumen degradation of N was lower in sainfoin than in lucerne, resulting in a lower proportion of N intake excreted in urine. The intestinal digestibility of sainfoin was also lower than that of lucerne, resulting in a higher N excretion in faeces. Hence the efficiency of N utilisation by sheep (ENr) was similar (mean value 0.205 and 0.199 g N retained/g N intake for fresh sainfoin and lucerne, respectively). The coefficient of N retention by the animal was higher for sainfoin at the vegetative stage than for all the other forages. Nitrogen degradability in the rumen determined by the nylon bag technique (DegN) was lower for sainfoin than for lucerne when forages were studied both fresh (mean value 0.608 and 0.818, respectively) and as hays (0.631 and 0.767). The efficiency of forage N digestion (ENd) was higher for sainfoin at the vegetative stage. Compared with lucerne, sainfoin greatly increased thein situestimate of forage N escaping the rumen but decreased its intestinal digestibility.

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Section: Rumen Degradabilitysupporting

confidence: 90%

In vivo and in situ measurements of the digestive characteristics of sainfoin in comparison with lucerne fed to sheep as fresh forages at two growth stages and as hay

Aufrere

Dudilieu

Poncet

2008

Animal

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“…The highest effective degradability of DM was recorded in L.humilis (0.665 g.g -1 ) and the lowest in P.ansrina (0.397 g.g -1 ) at a 0.02 h -1 passage rate. Similar effect of forages species on the effective degradability of DM was also indicated by Susmel et al (1990) and Turgut and Yanar (2004). Although E.nutans had the highest effective degradability of CP (0.566 g.g -1 ) at a 0.02 h -1 passage rate, this value is lower than the findings of Kaya et al (2004) for pasture samples (0.669 g.g -1 ).…”

Section: Resultssupporting

confidence: 75%

“…The effective degradability of C.satakeana and E.nutans at three rumen outflow rates were generally higher than for the other forages tested. These differences may be associated with the greater CP found in these two forages, as indicated by Balde et al (1993) and Turgut and Yanar (2004). Grazing of N rich forages in combination with grasses, particularly in the summer months, should help in meeting the requirements for rumen degradable protein and should improve animal performance (Long et al, 1999).…”

Section: Resultsmentioning

confidence: 99%

“…S.aliena and E.nutans were harvested at heading, the rest were at the anthesis stage. Samples were oven dried at 55°C for 48 h and then ground to pass a 1 mm screen for chemical analysis, and a 2 mm screen for the in rumen degradability study (Turgut and Yanar, 2004).…”

Section: Samplesmentioning

confidence: 99%

“…Washing loss was determined by similarly washing duplicate bags containing samples that were not incubated in the rumen. The bags were oven dried in an air-forced oven for 48 h at 55°C, weighed and used for analysis of nutrients (Turgut and Yanar, 2004).…”

Section: In Situ Incubationsmentioning

confidence: 99%

See 2 more Smart Citations

In vivo degradation kinetics of Tibetan forage

Cao¹,

Hu²,

Jun³

et al. 2010

Ital J Animal Sci

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The objective of the current study was to evaluate chemical composition and degradation characteristics for eight forages harvested in July from the Tibetan plateau of China. Duplicate bags containing 2 g of forage species were incubated in the rumen of six ruminally cannulated Tibet Peng-Po sheep for 0, 3, 6, 12, 24, 48 and 72 h. Significant differences were observed in degradation kinetics and effective degradability values of the different forages. The rapid degradable value and potential degradability for DM and NDF in Lagotis humilis was higher (P<0.01) than for the other forages. Carex satakeana had the most rapidly degradable CP fraction of all forages tested and Elymus nutans had the highest potential degradability of CP. L. humilis, C. satakeana and E. nutans had high effective degradability of DM and CP indicated their high quality as ruminal forage in cold areas of Tibet

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Ruminal dry matter and crude protein degradation kinetics of five sainfoin (Onobrychis viciifolia Scop) accessions differing in condensed tannin content and obtained from different harvests

Azuhnwi

Thomann

Arrigo

et al. 2012

Animal Feed Science and Technology

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In situ dry matter and crude protein degradation kinetics of some forages in Eastern Turkey

Cited by 11 publications

References 14 publications

In vivo and in situ measurements of the digestive characteristics of sainfoin in comparison with lucerne fed to sheep as fresh forages at two growth stages and as hay

In vivo and in situ measurements of the digestive characteristics of sainfoin in comparison with lucerne fed to sheep as fresh forages at two growth stages and as hay

In vivo degradation kinetics of Tibetan forage

Ruminal dry matter and crude protein degradation kinetics of five sainfoin (Onobrychis viciifolia Scop) accessions differing in condensed tannin content and obtained from different harvests

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