Interrelationships of Parturition Problems, Production of Subsequent Lactation, Reproduction, and Age at First Calving
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TLDR
Data of 22,691 observations on parturition related problems (dystocia, calf mortality, milk fever, retained placenta, and mastitis) were collected from 27 cooperating California dairy herds and decided on breeding virgin heifers based on size of cow because of the effect of size ofcow on difficulty at first parity.About:
This article is published in Journal of Dairy Science.The article was published on 1983-05-01 and is currently open access. It has received 164 citations till now. The article focuses on the topics: Milk fever & Retained placenta.read more
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Invited review: Body condition score and its association with dairy cow productivity, health, and welfare
TL;DR: There is relative consistency in the associations among calving and nadir BCS, and BCS change on milk production, postpartum anestrous, the likelihood of a successful pregnancy and days open, therisk of uterine infection, and the risk of metabolic disorders.
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Path analysis of dry period nutrition, postpartum metabolic and reproductive disorders, and mastitis in Holstein cows.
TL;DR: The study suggests that feeding higher intakes of protein and energy in the last 3 week of the dry period may reduce the incidence of metabolic and reproductive disorders.
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Effect of disease on reproduction in the dairy cow: a meta-analysis
TL;DR: Effects on reproduction of dystocia, stillbirth, abortion, milk fever, retained placenta, metritis, cystic ovaries, anestrus, ketosis, displaced abomasum, locomotor disorders, and mastitis were reviewed.
Journal ArticleDOI
Path model of reproductive disorders and performance, milk fever, mastitis, milk yield, and culling in Holstein cows.
Hollis N. Erb,R.D. Smith,Pascal A. Oltenacu,Charles L. Guard,R. B. Hillman,P. A. Powers,Mary C. Smith,White Me +7 more
TL;DR: Age, previous lactation yield or estimated transmitting ability for milk, body weight, days dry, reproductive disorders, milk fever, mastitis, reproductive performance, current milk yield, and culling affected heifers' health and survival.
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Relationship between ovarian activity and energy status during the early postpartum period of high producing dairy cows.
TL;DR: Anestrus cows and cows showing corpus luteum activity between d 40 and 60 obtained more energy from body reserves for milk production the first 2 wk of lactation, than cows cycling prior to d 40.
References
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The analysis of cross-classified categorical data
TL;DR: The second edition has been updated and revised, with more emphasis on logic and logistic response properties and on the small-sample behavior of chi-square statistics as mentioned in this paper, and includes 40 to 50 new problems with most having separate data sheets.
Journal ArticleDOI
The Analysis of Cross-Classified Categorical Data
A. Stuart,Stephen E. Fienberg +1 more
TL;DR: The second edition has been updated and revised, with more emphasis on logic and logistic response properties and on the small-sample behavior of chi-square statistics.
Journal ArticleDOI
Studies on Calving Difficulty, Stillbirth and Associated Factors in Swedish Cattle Breeds
TL;DR: In this article, a study on Calving Difficulty, Stillbirth and Associated Factors in Swedish Cattle Breeds is presented, with a focus on Swedish cattle breeds and cows from Sweden.
Journal ArticleDOI
Interrelationships between production and reproductive diseases in Holstein cows. Data.
Hollis N. Erb,S.W. Martin +1 more
TL;DR: The distribution of calving ages suggested that the annual herd turnover was 20 to 25%.
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Effect of Dystocia on Yield, Fertility, and Cow Losses and an Economic Evaluation of Dystocia Scores for Holsteins
C.M.B. Dematawena,P.J. Berger +1 more
Disease, production and culling in Holstein-Friesian cows: IV. Effects of disease on production
Ian R. Dohoo,S. Wayne Martin +1 more