Evidence map›Paper›PMID 41144092›Full record

ArticleTropical animal health and production2025

Lifetime performance traits of Holstein cows: implications of first-lactation milk yield and culling causes.

Nadia H Fahim, Mohamed A M Ibrahim, Rabie R Sadek

Abstract read
In one paragraph

Article in Tropical animal health and production, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 4 papers.

0numbers the graph read from it
0cells of the map it votes in
4citing papers in PubMed
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

4 citing papers in PubMed.

  1. Article
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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

3 authors.

Nadia H FahimAnimal Production Department, Faculty of Agriculture, Cairo University, Giza, Egypt. nadiaamn@agr.cu.edu.eg.ORCID http://orcid.org/0000-0002-0380-2338
Mohamed A M IbrahimAnimal Production Department, Faculty of Agriculture, Cairo University, Giza, Egypt.
Rabie R SadekAnimal Production Department, Faculty of Agriculture, Cairo University, Giza, Egypt.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

The study examined the impacts of first-lactation milk yield and culling causes on lifetime performance traits in Holstein cows culled after their second to sixth parities. Complete lactations from 12,209 records belonging to 4522 culled cows were included in the study. Reproductive problems, mastitis, metabolic disorders, lameness, endemic diseases, and respiratory diseases represented culling causes. The resulting means were 371 ± 2.0 days for days in milk 30,223 ± 374 kg for lifetime milk yield, 13.5 ± 0.4 kg for milk per day of cow age, 38 ± 0.4 months for productive life, 68 ± 0.4 months for longevity, 3.6 ± 0.05 for services per conception, and 437 ± 3.4 days for calving interval. The first-lactation milk yield was associated with lifetime milk yield, milk/day of age, no-services/conceptions, and calving intervals. Cows culled for reproductive problems exhibited the greatest longevity, whereas those culled for endemic diseases had the shortest. Cows culled for lameness achieved the highest lifetime milk yield, while cows culled for metabolic disorders showed the highest milk yield per day of cow age. Furthermore, reproductive problems, metabolic diseases, or mastitis caused a higher number of no-services/conceptions and calving intervals compared with the other culling causes. In conclusion, higher first lactation milk yield was associated with higher productivity and lower reproductive performance. Moreover, the lifetime performance of culled cows differed according to the reason for culling. Dairy management programs should address reasons for culling in terms of their interrelationships, as one reason may cause or promote the appearance of another.

Indexed as

Animal CullingCattle DiseasesLactationMilkAnimalsCattleDairyingFemaleLongevityReproductionCullingFirst-lactation milkHolsteinLifetime performance

Identifiers

PMID41144092
PMCPMC12559079

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Registered trials

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.