Iodine Metabolism in Relation to Reproductive Status in Cows

Afiefy, M. M.; Zaki, K.; Abul‐Fadle, W.; Ayoub, L. A.; Soliman, F. A.

doi:10.1111/j.1439-0442.1970.tb00775.x

Cited by 9 publications

(1 citation statement)

References 13 publications

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“…Iodine is actively involved in the functions of all female genitals. The process of reproduction is significant metabolic stress in the genital organs, which can lead to acute iodine deficiency (Abdul-Fadle and Ayoub, 1970;Koshovyj, 2004). Iodine affects the synthesis of thyroid hormones, the activity of which during estrus is higher than in other phenomena of the sexual cycle (Yasothai, 2014).…”

Section: Mineralsmentioning

confidence: 99%

Reviewing Effective Factors of Alimentary Deficiency in Animals Reproductive Functions

Skliarov¹,

Fedorenko²,

Naumenko³

et al. 2021

WVJ

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Animal reproduction is one of the main factors limiting the efficiency of livestock production. Its optimal level is possibly achieved when certain conditions are created for animals. As reproduction is a complex reflex process depending on neuroendocrine regulatory mechanisms, the character and strength of stimuli, which, in turn, is due to a number of factors. Under normal conditions, the body of animals is affected by many different factors, which are appropriately transformed and specified by positive or negative reactions. Inhibitory factors include air pool, saturated with harmful substances and gases, ionizing radiation, poor water quality along with altered redox properties, hypokinesia combined with poor unbalanced feeding, systematic chronic stress, presence of toxic substances in feed, and the deficiency of vitamins and other bioantioxidants in feed or their excessive spending. Of the wide range of genetic and paratypic factors of negative impacts on reproductive capacity, the most common one is alimentary, which causes impaired reproductive function due to deficiencies in the rules, regulations, and feeding regime of animals. In particular, the alimentary can be associated with both general malnutrition (starvation) and overfeeding (obesity). However, the alimentary form of infertility mostly occurs due to low-quality diets when the diet lacks vital components (mainly vitamins, macro-, and micronutrients) or the quantitative ratios of the ingredients are violated. This is possible even if the total nutritional value of the diet meets the established requirements for the physiological needs of the body. Vitamins, micro-, and macronutrients are ecologically deficient factors of disturbance of animal reproductive function, the influence of which is observed on all processes of reproduction, from fertilization to the postpartum period and the preservation of young animals. The pathogenesis of their insufficiency is associated with the violation of steroido-, gameto-, and embryogenesis and the emergence of ante-, intra-, neo- and postnatal pathologies, respectively. Therefore, treatments and prevention measures should be aimed at providing animals with biologically complete balanced feeding and replenishment of the body with vitamins and minerals. However, all these issues remain incompletely studied and need further research.

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Section: Mineralsmentioning

confidence: 99%

Reviewing Effective Factors of Alimentary Deficiency in Animals Reproductive Functions

Skliarov¹,

Fedorenko²,

Naumenko³

et al. 2021

WVJ

View full text Add to dashboard Cite

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Untersuchungen zum Jodstoffwechsel

Groppel

Hennig

Grün

et al. 1981

Archiv für Tierernaehrung

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The influence of J-deficiency on reproduction was tested in model experiments with goats and mini pigs, partly through several reproduction cycles including the descendants after intra-uterine depletion as well. The effect of 0.05 mg J/kg dry matter in the concentrated feed (total ration 0.03)--0.04 mg J/kg dry matter) for goats was a diminished success of first inseminations, a higher frequency of abortions, high mortality and poorer development of the kids. All J-deficiency goats and kids suffered from hypertrophy of the thyroid gland, half of all J-deficiency kids were born hairless. Concerning the mini pigs, 0.06 mg J/kg dry matter even after intra-uterine depletion had no detectable influence either on conception or the mortality and development of the piglets. The thyroid gland of all deficiency pigs was enlarged, however. The hypertrophy of the thyroid gland makes it easy to diagnose J-deficiency visually.

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Über das Verhalten von Glucose, Thyroxin, Vitamin A, ß‐Carotin, Methionin und Vitamin B₁₂ im Blut erstgebärender Rinder während der Puerperalphase¹

Stöckl

Schuh

Schmid

1975

Zeitschrift für Tierphysiologie Tierernährung und Futtermittelk

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Zusammenfassung Im Serum bzw. Plasma erstgebärender Rinder wurden in der Puerperalphase Blutglucose, Thyroxin, Vitamin A, β‐Carotin, Methionin und Vitamin B12 bestimmt. Während der Geburt zeigt die Glucosekonzentration den höchsten Wert, kehrt bereits nach ca. 12 Stunden zur Norm zurück und sinkt anschließend in den unteren Normbereich ab. In den ersten Tagen post partum sinken sowohl der Thyroxin‐, der Vitamin‐A‐ als auch der β‐Carotin‐Gehalt im Blut ab und erreichen in der 2. bzw. 3. Woche post partum ihre Normwerte wieder. Das Methionin ist unmittelbar nach der Geburt erniedrigt. Die Werte verdoppeln sich gegenüber der Norm zwischen dem 8. und 15. Tag post partum und kehren anschließend wieder in den Normbereich zurück. Umgekehrt verhält sich der Vitamin‐B12‐Serumspiegel, der unmittelbar nach dem Abkalben deutlich erhöht ist, bis zum 20. Tag post partum absinkt und schließlich mit dem 30. Tag p. p. den Normbereich erreicht. Das Verhältnis dieser beiden letzten Parameter deutet darauf hin, daß die Proteinsynthese nach einer Woche p. p. vermehrt einsetzt.

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Iodine Metabolism in Relation to Reproductive Status in Cows

Cited by 9 publications

References 13 publications

Reviewing Effective Factors of Alimentary Deficiency in Animals Reproductive Functions

Reviewing Effective Factors of Alimentary Deficiency in Animals Reproductive Functions

Untersuchungen zum Jodstoffwechsel

Über das Verhalten von Glucose, Thyroxin, Vitamin A, ß‐Carotin, Methionin und Vitamin B₁₂ im Blut erstgebärender Rinder während der Puerperalphase¹

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Iodine Metabolism in Relation to Reproductive Status in Cows

Cited by 9 publications

References 13 publications

Reviewing Effective Factors of Alimentary Deficiency in Animals Reproductive Functions

Reviewing Effective Factors of Alimentary Deficiency in Animals Reproductive Functions

Untersuchungen zum Jodstoffwechsel

Über das Verhalten von Glucose, Thyroxin, Vitamin A, ß‐Carotin, Methionin und Vitamin B12 im Blut erstgebärender Rinder während der Puerperalphase1

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Über das Verhalten von Glucose, Thyroxin, Vitamin A, ß‐Carotin, Methionin und Vitamin B₁₂ im Blut erstgebärender Rinder während der Puerperalphase¹