PMID: 11900962Mar 20, 2002Paper

Effects of aging and weaning on mRNA expression of leptin and CCK receptors in the calf rumen and abomasum

Domestic Animal Endocrinology
S YonekuraY Obara

Abstract

In order to know the effects of weaning and volatile fatty acid feeding on gastric leptin expression, we investigated the expression of leptin and CCK receptor mRNA in the bovine rumen, abomasum and duodenum using RT-PCR in 3-week-old pre-weaning, 13-week-old post-weaning and adult animals. Leptin mRNA was expressed in the rumen and abomasum of 3-week-old pre-weaning animals, but it was abolished in 13-week-old and adult animals. In the duodenum, leptin expression was observed in the 3-, 13-week-old and adult animals. In the rumen, CCK(A) receptor mRNA was expressed in 3-week-old animals, but not in 13-week-old and adult animals. In the abomasum, CCK(B) receptor expression gradually decreased from 3-week-old to adult animals. Expression of CCK(B) receptor and of CCK(A) receptor was slight in the rumen and abomasum, respectively. In the next study, we examined the effect of weaning of 6 weeks or non-weaning (fed on milk replacer alone (milk) or milk replacer with volatile fatty acids (milk+VFA) until 13 weeks old) on leptin mRNA expression in the rumen and abomasum. In 13-week-old calf rumen and abomasum, leptin mRNA expression was detected in non-weaning milk-fed animals at 13 weeks old, although it was not observed in weaning ...Continue Reading

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Citations

Feb 1, 2009·Animal : an International Journal of Animal Bioscience·K W Romański
Jan 13, 2010·Zoological Science·Qinggang XuMuyuan Zhu
Jan 24, 2007·Domestic Animal Endocrinology·Hnin ThidarMyintHideto Kuwayama
Aug 7, 2012·Animal Science Journal = Nihon Chikusan Gakkaihō·Swe YannaingHideto Kuwayama
Nov 27, 2010·Animal Science Journal = Nihon Chikusan Gakkaihō·Tomomi Ban-TokudaTsutomu Fujihara
Oct 4, 2005·Domestic Animal Endocrinology·Shinichi YonekuraYoshiaki Obara
May 10, 2005·Domestic Animal Endocrinology·T BarthaP Rudas
Apr 12, 2006·Journal of Dairy Science·H HayashiY Obara
Dec 1, 2006·Nutrition Research Reviews·P GuilloteauR Zabielski
May 22, 2017·Journal of Dairy Science·Sarah J MealeMichael A Steele

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