Intestinal iron absorption in chickens

Sáiz, M. P.; Marti, M. T.; Mitjavila, M. T.; Planas, Jordi

doi:10.1007/bf02783825

Cited by 8 publications

(1 citation statement)

References 21 publications

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“…A significant increase in the whole intestinal weight which appeared during the laying process was observed. This had already been seen in chickens (Saiz, Marti, Mitjavila & Planas, 1980), and gave morphological support to the enhancement of intestinal iron absorption during this period.…”

Section: Discussionsupporting

confidence: 69%

Iron Content and Distribution in Japanese Quail

1987

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SUMMARYDetermination of blood haematocrit and haemoglobin, plasma iron content, total iron binding capacity and phosphoprotein (vitellogenin), and the iron content of different organs (pectoral muscle, liver, spleen, intestine, femur bone marrow, blood, gonad and eggs, and feathers) were carried out in prelaying, onset of laying and full laying females, as well as in adult males. The whole iron content was also determined on incinerated specimens giving these results: 53-7 parts per million (p.p.m.) iron in the prelaying group, 54 5 p.p.m. iron at the onset of laying, 64-3 p.p.m. iron in full laying and 53-5 p.p.m. iron in males. The plumage represented 5-8% of the total body weight, and its iron content oscillated between 152-163 p.p.m. iron in males and non-laying females and 177-3 p.p.m. iron at full laying. The laying period induced important variations in plasma levels and in organ distribution, but not in haematological values. The first eggs laid were smaller (9.2 g) and richer in iron (427 ,ug iron) than those laid by older layers (11 8 g and 305 jug iron). The percentage distribution of the total iron content of organs was, in prelaying females: feathers, 21-9; blood, 56 6; pectoral muscle 8-1; liver, 9 7; intestine, 2 7. In laying females: 29 I; 46-6; 11 5; 7 4; 4 2. In males: 17 4; 59 6; 11 4; 7 9; 2-3.The increase in intestinal iron content in laying quails coincided with a double intake of food. This distribution differs from the mammalian model, as egg production (where each egg represented 2-5-5-5% of the total iron) and the great inert iron deposits in the plumage require an elaborate iron metabolism control system to cover all the iron needs in birds.

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Section: Discussionsupporting

confidence: 69%

Iron Content and Distribution in Japanese Quail

1987

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Iron absorption by small intestine of chickens

Sáiz

Marti

Mitjavila

et al. 1993

Biol Trace Elem Res

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Iron (Fe) absorption by three segments (duodenum, jejunum, and ileum) of the small intestine of chickens was studied by a perfusion technique in vivo in closed circuit using 59Fe Cl3 and was related to the histological characteristics of each segment. The serosal transfers of Fe for the duodenum and jejunum were the same (14%/cm), but significantly different (p < 0.05) from those of the ileum (9%/cm), which may be explained by the morphological and histological properties of the gut of chickens. However, the presence of Fe in blood and in liver was significantly lower after perfusion of the jejunum and ileum than after perfusion of the duodenum. It is concluded that chickens show an early adaptation of small intestine to Fe absorption in response to the considerable loss of Fe suffered during the laying process.

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Organ iron content in New Hampshire chickens

Marti

Sáiz

Mitjavila

et al. 1990

Biol Trace Elem Res

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We have studied some hematological parameters and iron and ferritin iron contents in different organs of New Hampshire chickens at the ages of 4, 8, 13, and 18 wk for both sexes, as well as 24 wk for laying hens, in order to study the variations with age, the existence of sex differences, and the accommodations to laying. The hematocrit and hemoglobin levels did not show important variations, but plasma iron increased at laying. The iron and ferritin iron concentrations in liver and spleen increased more slowly during growth than the total iron and ferritin iron contents, and no significant decline was observed at laying. The iron concentration in the heart and pectoral muscle stayed constant throughout the period studied, and kidneys showed slight increase with age. However, the iron concentration in the intestine decreased from the proximal to the distal segments and also increased in the duodenum at laying. No differences caused by sex have been detected in the organs studied. The absence of differences caused by sex in the organ iron stores in favor of females, especially in liver, and the lack of influence of the laying process in iron stores could be a consequence of the low laying frequency of this strain.

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Intestinal iron absorption in chickens

Cited by 8 publications

References 21 publications

Iron Content and Distribution in Japanese Quail

Iron Content and Distribution in Japanese Quail

Iron absorption by small intestine of chickens

Organ iron content in New Hampshire chickens

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