Effects of dietary iron supplementation on growth performance, hematological status, and whole-body mineral concentrations of nursery pigs1

Rincker, M. J.; Hill, G. M.; Link, Jane E.; Rowntree, Jason E.

doi:10.2527/2004.82113189x

Cited by 76 publications

(75 citation statements)

References 31 publications

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“…The hepatic Fe stores of the newborn piglet combined with the low Fe concentration in sows' milk are not sufficient to meet the pig's Fe need for rapid growth and increase in blood volume (88) . Consequently, the use of exogenous sources of Fe to prevent Fe deficiency in neonatal pigs has been well documented (89,90) .…”

Section: Biological Effects Of Dietary Nucleotidesmentioning

confidence: 99%

“…Consequently, the use of exogenous sources of Fe to prevent Fe deficiency in neonatal pigs has been well documented (89,90) . However, the bioavailability of Fe from different sources may vary considerably (91,92) , and, according to Rincker et al (88) , is not only dependent on the Fe status of the animal but also on dietary Fe as well as on various nutritional and non-nutritional substances within the diet. Dietary nucleotides, particularly the degradation product of IMP, inosine, might play a role in facilitating intestinal Fe absorption (93) .…”

Section: Biological Effects Of Dietary Nucleotidesmentioning

confidence: 99%

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The role of dietary nucleotides in single-stomached animals

2011

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The transition from liquid to solid feed during weaning results in morphological, histological and microbial changes in the young animal's intestinal tract and often is associated with diarrhoea. The ban of in-feed antibiotics in pig production in the European Union has led to increasing interest in alternatives to overcome weaning-associated problems. Among others, nucleotides may have the potential to alleviate health impairments due to weaning. Nucleotides are natural components of the non-protein fraction of milk and have important effects on the maintenance of health in young animals. Nucleotides and their related metabolic products play key roles in many biological processes and become essential dietary components when endogenous supply is insufficient for normal function. The present review summarises nucleotide composition of milk from different species, the biology of nucleotides and possible effects of dietary nucleotides on intestinal morphology and function, intestinal microbiota, immune function, nutrient metabolism, hepatic morphology and function as well as growth performance. Special attention is given to data available for pigs, and suggestions are made for inclusion of nucleotides in the diet to benefit piglets' health and reduce the consequences accompanying early weaning.

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Section: Biological Effects Of Dietary Nucleotidesmentioning

confidence: 99%

Section: Biological Effects Of Dietary Nucleotidesmentioning

confidence: 99%

The role of dietary nucleotides in single-stomached animals

2011

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“…Increases in pig liver iron levels with increasing levels of supplementation, demonstrating a high storage capacity of that organ, have been noted by several authors (FURUGOURI, 1972a;RINCKER et al, 2004;YU;HUANG;CHIOU, 2000) but not observed in this experiment.…”

Section: Resultsmentioning

confidence: 50%

Relative bioavailability of iron from organic sources for weanling piglets

et al. 2014

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Some authors consider minerals from organic sources more bioavailable for pig nutrition in comparison with inorganic sources. To evaluate the relative iron bioavailability from the organic source iron carbo-amino-phospho-chelate (ICAPC) to weanling piglets, it was conducted an experiment with 126 commercial piglets, using iron sulfate monohydrate (S) as standard. The experiment had a randomized block design with seven treatments (diet without adding specific source of iron, diet with 50, 100 and 150 ppm iron from S and diet with 50, 100 and 150 ppm iron from ICAPC), six replications and three animals per experimental unit. Performance parameters (average daily gain -ADG, feed:gain ratio -F:G) and blood variables (hemoglobin -Hb, hematocrit -Ht, transferrin -TR, latent iron-binding capacity -LIBC, total iron-binding capacity -TIBC, serum iron -Fe and transferrin saturation index -TSI) were evaluated. At the end of the experiment a piglet from each experimental unit was slaughtered and its liver and spleen removed for assessment of iron concentration by flame atomic absorption spectrometry (FAAS). The evaluated sources of iron yielded similar results for the variables of interest, but the increase in iron intake was followed by a linear increase in ADG, Hb, Ht, Fe and TSI as well as a linear decrease in the values of F:G, TR, LIBC and TIBC. Iron bioavailabilities from both ICAPC and S sources are similar for weanling piglets.

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“…Estes dados correspondem aos obtidos por outros autores, quando observaram que a redução de ferro nas rações não alterou o ganho de peso dos animais em fase de crescimento alimentados com a mesma fonte de ferro em diferentes concentrações (Amine et al, 1972). Essas observações foram destacadas em estudos com leitões após o desmame (Yu et al, 2000;Rincker et al, 2004).…”

Section: Resultsunclassified

Biodisponibilidade de ferro em diferentes compostos para leitões desmamados aos 21 dias de idade

Cocato¹,

Neto

Berto

et al. 2008

R. Bras. Zootec.

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RESUMO -Avaliou-se a biodisponibilidade de ferro de diferentes compostos visando sua utilização em dietas para leitões desmamados. Utilizaram-se 44 leitões (7 não-anêmicos e 37 anêmicos) desmamados aos 21 dias de idade (7,3 ± 1,8 kg) e distribuídos em dois grupos: grupo não-anêmico e grupo anêmico. Durante sete dias, os animais do grupo não-anêmico receberam dieta com FeSO 4 .7H 2 O (sulfato ferroso hepta-hidratado) na dose de 100 mg/kg e os do grupo anêmico, dieta sem ferro (<15 mg/kg ração). No sétimo dia, depois de determinada a concentração de hemoglobina sanguínea e diagnosticada a anemia, os leitões foram agrupados segundo o produto do peso (kg) × hemoglobina (g/dL) e alojados individualmente, durante 13 dias, em gaiolas para estudos de digestibilidade, onde foram alimentados com seis rações à base de milho e leite em pó: três rações-padrão com FeSO 4 .7H 2 O em quantidade equivalente a 80, 150 e 200 mg Fe/kg de ração; duas rações experimentais com ferro (150 mg/kg) na forma de FeSO 4 microencapsulado com carboximetilcelulose ou de ferro quelado com metionina; e uma controle com ferro (100 mg/kg). O consumo de ração foi medido diariamente. Nos dias 0, 3, 6, 9 e 13 do período de repleção, os animais foram pesados para avaliação do desempenho e o sangue foi coletado para determinação da concentração de hemoglobina.Ao final do ensaio, os animais foram sacrificados e o fígado foi coletado para determinação das concentrações de ferro total, ferro heme e ferro não-heme. As concentrações hepáticas de ferro heme, ferro não-heme e ferro total não diferiram entre os animais, entretanto, os do grupo controle apresentaram excesso de ferro total no fígado, relacionado à dose de ferro injetada nos leitões após o desmame. Em comparação ao FeSO 4 .7H 2 O não encapsulado, os compostos de ferro microencapsulado com carboximetilcelulose e de ferro quelado com metionina promovem melhor conversão alimentar em leitões desmamados. Palavras-chave: absorção, hemoglobina, ingrediente alternativo Bioavailability of iron in different compounds for piglets weaned at 21 days oldABSTRACT -Iron bioavailability from different compounds was evaluated to be used in diets for weaned piglets. Forty four piglets (7 non-anemic and 37 anemic) weaned at 21 days old (7.3 ± 1.8 kg) were distributed into two groups: non-anemic group and anemic group. During seven days, the animals from non-anemic group were fed diet with ferrous sulfate hepthydrate (FeSO4.7H2O) in the dose of 100 mg/kg and of the anemic group, diet without iron (<15 mg/kg diet). On the seventh day, after the determination blood hemoglobin concentration and diagnosed with anemia, piglets were grouped according to product of the weight (kg) × hemoglobin (g/dL) and individually housed, for 13 days in cages for digestibility studies, where they were fed with six diets based on corn and powdered milk: three standard diets with FeSO4.7H2O in equivalent amount of 80, 150 and 200 mg Fe/kg diet; two experimental diets, one with iron (150 mg/kg) in form of FeSO4 microencapsulated with carboxy...

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Effects of dietary iron supplementation on growth performance, hematological status, and whole-body mineral concentrations of nursery pigs1

Cited by 76 publications

References 31 publications

The role of dietary nucleotides in single-stomached animals

The role of dietary nucleotides in single-stomached animals

Relative bioavailability of iron from organic sources for weanling piglets

Biodisponibilidade de ferro em diferentes compostos para leitões desmamados aos 21 dias de idade

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