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Titolo:
Short communication: Effect of pH on absorption of immunoglobulin G in neonatal calves
Autore:
Quigley, JD; French, P; James, RE;
Indirizzi:
Amer Prot Corp, Ruminant Prod Div, Ames, IA 50010 USA Amer Prot Corp AmesIA USA 50010 p, Ruminant Prod Div, Ames, IA 50010 USA Virginia Tech, Dept Dairy Sci, Blacksburg, VA 24061 USA Virginia Tech Blacksburg VA USA 24061 Dairy Sci, Blacksburg, VA 24061 USA
Titolo Testata:
JOURNAL OF DAIRY SCIENCE
fascicolo: 8, volume: 83, anno: 2000,
pagine: 1853 - 1855
SICI:
0022-0302(200008)83:8<1853:SCEOPO>2.0.ZU;2-5
Fonte:
ISI
Lingua:
ENG
Soggetto:
COLOSTRUM; SERUM;
Keywords:
calves; colostrum; IgG;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Agriculture,Biology & Environmental Sciences
Citazioni:
9
Recensione:
Indirizzi per estratti:
Indirizzo: Quigley, JD Iowa State Univ, Dept Anim Sci, Ames, IA 50011 USA Iowa State Univ Ames IA USA 50011 nim Sci, Ames, IA 50011 USA
Citazione:
J.D. Quigley et al., "Short communication: Effect of pH on absorption of immunoglobulin G in neonatal calves", J DAIRY SCI, 83(8), 2000, pp. 1853-1855

Abstract

We fed newborn calves (n = 60) maternal colostrum (n = 12) or a colostral supplement product derived from edible bovine serum (n = 48). Sodium citrate was added to supplements to achieve a final pH of 7.5, 7.0, 6.0, and 5.0. Calves were fed colostrum (2 L/feeding) or supplement (454 g reconstitutedin 2 L of water) at 1.2 and 12.6 h of age, which provided a total of 156 (colostrum) or 90 (supplement) g of IgG. We sampled jugular blood at 0 and 24 h of age to determine plasma IgG. Mean plasma IgG concentrations at 0 and24 h of age were 0 and 6.7 g/L and were markedly higher in calves fed maternal colostrum compared with supplements (10.7 vs. 6.5 g/L) and were higherin Jersey vs. Holstein calves (8.5 vs. 6.1 g/L). Estimated apparent efficiency of IgG absorption was unaffected by treatment and averaged 20%. These data indicate that pH of colostral supplements between 7.5 and 5.0 do not markedly influence the efficiency of IgG absorption.

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Documento generato il 02/06/20 alle ore 01:46:53