Catalogo Articoli (Spogli Riviste)

OPAC HELP

Titolo:
THE USE OF FRILLED FAT TO COAT AND PROTECT AMINO-ACIDS FROM RUMINAL DEGRADATION
Autore:
BLOCK SM; JENKINS TC;
Indirizzi:
CLEMSON UNIV,DEPT ANIM DAIRY & VET SCI,BOX 34036,151 POOLE AGR BLDG CLEMSON SC 29634 CLEMSON UNIV,DEPT ANIM DAIRY & VET SCI CLEMSON SC 29634
Titolo Testata:
Journal of the Science of Food and Agriculture
fascicolo: 4, volume: 65, anno: 1994,
pagine: 441 - 447
SICI:
0022-5142(1994)65:4<441:TUOFFT>2.0.ZU;2-E
Fonte:
ISI
Lingua:
ENG
Soggetto:
DAIRY-COWS; LACTATION PERFORMANCE; NUTRIENT DIGESTION; RUMEN BYPASS; RESPONSES; REPRODUCTION; METABOLISM;
Keywords:
PRILLED FAT; METHIONINE; LYSINE; RUMINAL DEGRADATION;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Science Citation Index Expanded
Citazioni:
18
Recensione:
Indirizzi per estratti:
Citazione:
S.M. Block e T.C. Jenkins, "THE USE OF FRILLED FAT TO COAT AND PROTECT AMINO-ACIDS FROM RUMINAL DEGRADATION", Journal of the Science of Food and Agriculture, 65(4), 1994, pp. 441-447

Abstract

A series of trials was conducted to determine the effectiveness and limitations associated with the use of partially hydrogenated triglycerides as a protective coating to enhance amino add escape from the rumen. Commercially prepared prills and laboratory-synthesized prills containing either lysine or methionine were incubated from 0-24 h in situ,in a fistulated cow fed hay and grain (1 : 1, w/w DM). Multiple factors were found to affect the ability of fat to protect amino acids. Examination of prill size where prills were separated by sieves into sizes ranging from 703 mu m to 2.5 mm indicated that, overall, larger prills provided greater protection than smaller prills. Differences in protection exist between amino acid source, as methionine recovery was consistently greater than lysine. Reduction of lysine particle size improved its protection, but was still not protected as well as methionine. Frills with iodine values (IV) of <1, 17 and 40 were also examined. Differences in protection between IV levels was not great, however, IV< 1 and 17 provided greater protection than IV 40. Utilizing results from the various trials, maximal protection level was achieved (approximately 90%) for methionine in prills made from IV 17 which ranged in size from 2 to 2.5 mm.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 03/12/20 alle ore 15:38:38