Se and I status in pregnant ewes from a pastoral system and the effect of supplementation with Se and I or only Se on wool quality of lambs

Guerra, M. H.; Cabrera, M.C.; Abella, D. Fernández; Saadoun, A.; Burton, Antony J.

doi:10.1016/j.heliyon.2019.e02486

Cited by 5 publications

(6 citation statements)

References 48 publications

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“…Iodine levels are similar to those obtained by Guerra et al [16] in Uruguay. According to Suttle [42] the iodine requirements in animals of 50 kg average are in a range of 50-100 μg / kg DM so in the present study the requirements of this mineral were covered during the experiment.…”

Section: Content Of Se I Ndf and Cp In Natural Pasturessupporting

confidence: 90%

Response to iodine supplementation in the growth and quality of Texel lamb meat

Daniel¹,

Andrés²,

David³

et al. 2021

GSC Adv. Res. Rev.

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Iodine deficiency determines reproductive problems especially in the production of thyroid hormone, affecting the functions that thyroidal hormones regulate, such as energy metabolism, thermoregulation, reproduction, growth, muscle and bone tissue function. Indeed a certain concentration of iodine in the diet can promote performance in production in terms of fattening and growth. The main goal of the work was the supplementation with iodine salt from weaning to work on the production and quality of carcass and meat of early lambs of the Texel breed. Three random groups were formed. In one group, iodine salt was administered daily individually, in another group salt without iodine and finally a third "control" group without salt aggregate. All these animals were fed on natural field with an energy-protein supplement. The weaning weight and its evolution (daily gain) were determined, fortnightly until the work weight (35 kg) was reached. Blood levels of thyroid-stimulating hormone (TSH) and Selenium (Se) were evaluated. In the carcass were measured the hot and cold carcass weight, pH, colour; GR point and in the meat tenderness will be determined in the Longissimus dorsi muscle. Se concentrations, neutral detergent fiber, crude protein and iodine in pastures were also determined. The results show that no significant differences were found for any of the characters measured.

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Section: Content Of Se I Ndf and Cp In Natural Pasturessupporting

confidence: 90%

Response to iodine supplementation in the growth and quality of Texel lamb meat

Daniel¹,

Andrés²,

David³

et al. 2021

GSC Adv. Res. Rev.

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“…Also, season and fertilization can affect the level of copper in native grass and cultivated pastures [22,26]. Suboptimal content in selenium in pasture mixed received in this study was observed previously Guerra et al [6] related to season, particularly in the littoral Region where this study was carried out. Still, it could change with the season, as reported before [6].…”

Section: Resultssupporting

confidence: 64%

“…Traditionally, sheep production in the Country carry out in pastoral systems, associated with an image of animal welfare and natural product, whose exploitation is essential for export promotion and to offer healthy food for consumers [5]. A Region in the littoral Northwest of the Country, with abundant high-quality grasses in natural conditions, is traditionally lamb producer, mainly small-scale and predominately Merino for the wool [6]. Red meat is highly nutritional and has a high biological value of protein, bioavailable iron, trace minerals, and vitamins, including a high content of B12 [7].…”

Section: Introductionmentioning

confidence: 99%

Macrominerals, trace elements and hem and non–hem iron status in muscle Longissimus dorsi, from five double purpose lambs breed reared on pasture system in Uruguay

Guerra,

Moreni,

Saadoun

et al. 2024

RC FCV-LUZ

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Sheep meat production is facing new challenges, so a thorough knowledge of the attributes of lamb meat produced by different genotypes and under pasture conditions is necessary to characterise these systems, to valorise and differentiate the product from a quality approach and towards a more natural image, attributes that are increasingly taken into account by consumers. This study aimed to characterize the lamb meat nutritionally, coming from five genetic types, reared in a pastoral system, through the content of essential minerals, macro element, Ca, Mg, Na and K, trace elements as Se, Co, Zn, Cu, Mn, total iron (TFe), hem iron (HFe) and non–hem iron (NHFe) and B12 vitamin in the Longissimus dorsi muscle. The breeds, Corriedale, Merino Dohne, Highlander®, Corriedale Pro, and Australian Merino x Corriedale crossbreed; n=10, were studied. Merino Dohne breed has the highest calcium concentration (66.6 ± 6.3 mg·kg–1), Highlander® and Merino Dohne have a significantly (P<0.05) higher manganese concentration (304.1 ± 26.0 and 308.7 ± 23.6 µg·kg–1, respectively) than the other breeds. There were no significant differences in vitamin B12 concentrations between lamb breeds. The HFe and HFe/TFe ratio was higher (P<0.05) in the Corriedale and Corriedale Pro breeds (15.7 ± 0.6 and 15.4 ± 0.7 mg·kg–1 and 81.7 ± 2.8% and 76.0 ± 2.2%, respectively) and consequently less NHFe, related to others groups. Also, increased Zn content was obtained in Corriedale (32.6 ± 1.3 mg·kg–1), but other breeds are also rich in zinc. These results show that meat from these breeds qualifies as a good source claim for people with high requirements as children and elders.

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“…Chinese Merino sheep breeds were mainly produced by crossing Tibetan or Mongolian sheep with Soviet Merino, Rambouillet sheep and Australian Merino [ 3 ]. The main distinction of fine and coarse wool sheep breeds is that the coarse wool sheep have a large amount of medullated wool, while the key to fine wool sheep breeding is to select with less medullated wool until only non-medullated wool retained [ 4 , 5 ]. The medullated wool is developed from primary wool follicle, while the non-medullated wool is developed from primary and secondary wool follicle [ 6 ].…”

Section: Introductionmentioning

confidence: 99%

Genome-wide DNA methylation and transcriptome analyses reveal the key gene for wool type variation in sheep

Wang

Hua

Cai

et al. 2023

J Animal Sci Biotechnol

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Background Wool fibers are valuable materials for textile industry. Typical wool fibers are divided into medullated and non-medullated types, with the former generated from primary wool follicles and the latter by either primary or secondary wool follicles. The medullated wool is a common wool type in the ancestors of fine wool sheep before breeding. The fine wool sheep have a non-medullated coat. However, the critical period determining the type of wool follicles is the embryonic stage, which limits the phenotypic observation and variant contrast, making both selection and studies of wool type variation fairly difficult. Results During the breeding of a modern fine (MF) wool sheep population with multiple-ovulation and embryo transfer technique, we serendipitously discovered lambs with ancestral-like coarse (ALC) wool. Whole-genome resequencing confirmed ALC wool lambs as a variant type from the MF wool population. We mapped the significantly associated methylation locus on chromosome 4 by using whole genome bisulfite sequencing signals, and in turn identified the SOSTDC1 gene as exons hypermethylated in ALC wool lambs compare to their half/full sibling MF wool lambs. Transcriptome sequencing found that SOSTDC1 was expressed dozens of times more in ALC wool lamb skin than that of MF and was at the top of all differentially expressed genes. An analogy with the transcriptome of coarse/fine wool breeds revealed that differentially expressed genes and enriched pathways at postnatal lamb stage in ALC/MF were highly similar to those at the embryonic stage in the former. Further experiments validated that the SOSTDC1 gene was specifically highly expressed in the nucleus of the dermal papilla of primary wool follicles. Conclusion In this study, we conducted genome-wide differential methylation site association analysis on differential wool type trait, and located the only CpG locus that strongly associated with primary wool follicle development. Combined with transcriptome analysis, SOSTDC1 was identified as the only gene at this locus that was specifically overexpressed in the primary wool follicle stem cells of ALC wool lamb skin. The discovery of this key gene and its epigenetic regulation contributes to understanding the domestication and breeding of fine wool sheep.

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Se and I status in pregnant ewes from a pastoral system and the effect of supplementation with Se and I or only Se on wool quality of lambs

Cited by 5 publications

References 48 publications

Response to iodine supplementation in the growth and quality of Texel lamb meat

Response to iodine supplementation in the growth and quality of Texel lamb meat

Macrominerals, trace elements and hem and non–hem iron status in muscle Longissimus dorsi, from five double purpose lambs breed reared on pasture system in Uruguay

Genome-wide DNA methylation and transcriptome analyses reveal the key gene for wool type variation in sheep

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