Influence of Estrus Detection on Days Open in Dairy Herds

Influence of Estrus Detection on Days Open in Dairy Herds

Data from 10 herds on a herd reproductive status program supported estimates of lost reproductive days per cow per year due to conception failure and missed heat as 23 and 10 days. The corresponding estimates from Ohio Dairy Herd Improvement were 14.7 and 40.3 days. The correlation within the 10 her...

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Veröffentlicht in:Journal of dairy science 1975-02, Vol.58 (2), p.246-247
1. Verfasser: Barr, H.L
Format: Artikel
Sprache:eng
Schlagworte:
Animals
cattle
Cattle - physiology
Estrus
Female
Fertility
Fertilization
Pregnancy
Time Factors
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container_title Journal of dairy science
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creator Barr, H.L
description Data from 10 herds on a herd reproductive status program supported estimates of lost reproductive days per cow per year due to conception failure and missed heat as 23 and 10 days. The corresponding estimates from Ohio Dairy Herd Improvement were 14.7 and 40.3 days. The correlation within the 10 herds between days lost due to failure to conceive and total days open was .38 and between days lost due to missed heats and total days open .92.
doi_str_mv 10.3168/jds.S0022-0302(75)84554-1
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source MEDLINE; Elsevier ScienceDirect Journals; Elektronische Zeitschriftenbibliothek - Frei zugängliche E-Journals; Periodicals Index Online
subjects Animals
cattle
Cattle - physiology
Estrus
Female
Fertility
Fertilization
Pregnancy
Time Factors
title Influence of Estrus Detection on Days Open in Dairy Herds
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