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Titolo:
Fishmeal supplementation of steers fed on grass silage: effects on rumen function, nutrient flow to and disappearance from the small intestine
Autore:
Kim, EJ; Parker, DS; Scollan, ND;
Indirizzi:
AFRC, Inst Grassland & Environm Res, Aberystwyth SY23 3EB, Dyfed, Wales AFRC Aberystwyth Dyfed Wales SY23 3EB Aberystwyth SY23 3EB, Dyfed, Wales Univ Newcastle Upon Tyne, Dept Biol & Nutr Sci, Newcastle Upon Tyne NE1 7RU, Tyne & Wear, England Univ Newcastle Upon Tyne Newcastle Upon Tyne Tyne & Wear England NE1 7RU
Titolo Testata:
ANIMAL RESEARCH
fascicolo: 5, volume: 50, anno: 2001,
pagine: 337 - 348
SICI:
1297-9651(200109/10)50:5<337:FSOSFO>2.0.ZU;2-E
Fonte:
ISI
Lingua:
ENG
Soggetto:
LIVE-WEIGHT GAIN; VOLUNTARY INTAKE; MEAL SUPPLEMENTATION; NITROGEN DIGESTION; YOUNG CATTLE; PROTEIN; SHEEP; DIETS; FORMALDEHYDE; CALVES;
Keywords:
fishmeal; grass silage; amino acid; absorption;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Agriculture,Biology & Environmental Sciences
Citazioni:
35
Recensione:
Indirizzi per estratti:
Indirizzo: Scollan, ND AFRC, Inst Grassland & Environm Res, Plas Gogerddan, Aberystwyth SY23 3EB,Dyfed, Wales AFRC Plas Gogerddan Aberystwyth Dyfed Wales SY23 3EB ed, Wales
Citazione:
E.J. Kim et al., "Fishmeal supplementation of steers fed on grass silage: effects on rumen function, nutrient flow to and disappearance from the small intestine", ANIM RES, 50(5), 2001, pp. 337-348

Abstract

Four Hereford x Friesian mature steers equipped with rumen, duodenal and ileal cannulas were fed on either grass silage alone (S) or silage supplemented with fishmeal (150 g.kg(-1) silage dry matter intake; SFM) to assess effects on rumen fermentation, nutrient flow to and disappearance from the small intestine. The silage was a primary growth of perennial ryegrass with atotal-N content of 24.5 g.kg(-1) dry matter (DM). Ruminal concentrations of acetate, butyrate and ammonia-N were not different between treatments andaveraged 51.7, 8.9 and 8.4 mmol.l(-1), respectively. However, molar proportion of propionate was higher on SFM compared to S, 18.7 and 17.6 (SEM 0.18, P < 0.05), respectively. The amount and efficiency of microbial protein synthesis were not different between treatments and averaged 71.0 g.d(-1) and 35.8 g N.kg(-1) organic matter digested in the rumen, respectively. Fishmeal supplementation increased the flow of total-N (P < 0.05), non-ammonia-N(P < 0.05), and total amino acids (P < 0.05) at the duodenum. Amino acid disappearance was increased by fishmeal supplementation, 488 and 717 g.d(-1)(SEM 28.6, P < 0.05) for S and SFM, respectively. The apparent absorption coefficient for the total amino acids from the small intestine [( expressedas duodenal ileal)/duodenal] was also increased, 0.57 and 0.72 (SEM 0.028,P < 0.06) for S and SFM, respectively.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 24/01/20 alle ore 13:25:07