Abhängigkeit der Peroxydase-Aktivität in Milch vom Sexualzyklus beim Rind

Kern, Renate; Wildbrett, G.; Kiermeier, Friedrich

doi:10.1515/znb-1963-1216

Cited by 6 publications

(1 citation statement)

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“…The use of cervical mucus as an indicator of oestrus presents a number of practical problems, so the finding that the peroxidase content of cows' milk was significantly higher at oestrus (Kern, Wildbrett & Kiermeier, 1963) deserved 246 Eileen Linford further investigation; testing milk is easier than testing cervical mucus. Samples of milk (10 ml) were obtained in the middle of the morning milking from each of two cows for 25 days.…”

Section: Cervical Mucus As An Agent To Conceptionmentioning

confidence: 99%

Cervical Mucus: An Agent or a Barrier to Conception?

Linford¹

1974

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The significance of the cervix and its secretion, in relation to conception, varies with the species. By natural service, semen deposition in the pig and horse is intrauterine. This is also the site of artificial insemination in cattle even though the semen is deposited in the vagina at natural mating. In these species, therefore, the cervix is by-passed and the cervical mucus can be used only indirectly as an indicator of the stage of the cycle or of the hormonal state of the female. In contrast, in the sheep and in man the semen is deposited in the vagina. Furthermore, human semen is deposited in the female tract at times other than when fertilization can occur. The cervix in these species is involved in the process of conception. The physical and chemical properties of the cervical mucus determine whether the spermatozoa penetrate the cervix and reach the site of fertilization and so the mucus in these species can act either as an agent or as a barrier to conception.The cervical mucus of most species shows cyclical changes in its physical and chemical properties; these changes are under hormonal control. Most studies of cervical mucus have been concerned with establishing the cyclical variation in mucous components. It is not my intention to present these qualitative and quantitative changes here since this information has already been satisfactorily

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Section: Cervical Mucus As An Agent To Conceptionmentioning

confidence: 99%

Cervical Mucus: An Agent or a Barrier to Conception?

Linford¹

1974

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Einfluß der Verfütterung von Lindan an Milchkühe auf Zusammensetzung und Enzymaktivität der Milch

Wildbrett

1968

Nahrung

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Die Verfütterung von maximal 17,5 g Lindan pro Kuh innerhalb 5 Tagen beeinflußt weder die Menge oder den Fettgehalt des Gemelks noch die Aktivität der sauren Phosphatase und der Xanthindehydrase in der Milch der 5 Versuchstiere. Nur in 1 Fall ist die Aktivität der alkalischen Phosphatase vermindert, während der Peroxydasespiegel bei 4 von 5 Tieren signifikant ansteigt. Der Eiweißgehalt des Gemelks zeigt bei 3 Kühen unter dem Einfluß der Lindanapplikation fallende Tendenz.

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