INDILACT – Extended voluntary waiting period in primiparous dairy cows. Part 1: randomized controlled trial – SOMRS data – calvings, inseminations, parentage, culling, test milkings, lactation yields and yearly yields
SND-ID: 2022-131-2.
Access to data via
Citation
Alternative title
INDILACT - Part 1
Creator/Principal investigator(s)
Anna Edvardsson Rasmussen
- Swedish University of Agricultural Sciences, Department of Animal Nutrition and Management
Research principal
Swedish University of Agricultural Sciences
- Department of Animal Nutrition and Management
Principal's reference number
SLU.huv.2017.4.1-111
Description
The objective of the study is to investigate how an extended voluntary waiting period between calving and first insemination in primiparous cows would affect milk production and fertility during their first and second calving interval.
The data is registered between August 2018 to September 2021.
Data from 2 different sources. Access to these data is restricted due to the agreement with the principal owner of the data Växa Sverige.
1. Data (.txt files) from the Swedish Official Milk Recording System, operated by Växa Sverige regarding breed, calvings, inseminations, 305-d lactation yields, test-day yields, and dry-off dates from 16 farms. The inclusion criteria for the farms included herds with >100 dairy cows in production and a herd average milk production of at least 9 000 kg ECM/cow/year, a mean CI of < 14 months, and a system for daily milk yield registration.
2. Daily milk yields from the milking systems on the farms (three different types of systems: DeLaval, Lely and GEA), Excel files.
Metadata available:
One file with metadata, describing the data processing steps for each categor
The data is registered between August 2018 to September 2021.
Data from 2 different sources. Access to these data is restricted due to the agreement with the principal owner of the data Växa Sverige.
1. Data (.txt files) from the Swedish Official Milk Recording System, operated by Växa Sverige regarding breed, calvings, inseminations, 305-d lactation yields, test-day yields, and dry-off dates from 16 farms. The inclusion criteria for the farms included herds with >100 dairy cows in production and a herd average milk production of at least 9 000 kg ECM/cow/year, a mean CI of < 14 months, and a system for daily milk yield registration.
2. Daily milk yields from the milking systems on the farms (three different types of systems: DeLaval, Lely and GEA), Excel files.
Metadata available:
One file with metadata, describing the data processing steps for each category of data, is provided. Also available are Code-lists for reading the data from the text files and for decoding the codes in the text files. R scripts with statistical calculations are also available.
.txt files with information about calvings, cullings, inseminations, parentage. Registered by Farm owners, staff, and animal health staff and .txt files with information about test milkings, lactation yields and yearly yields. Registered by Farm owners, and Eurofins lab.
Variables:
1. Calvings: FarmID, cow-ID, birth year, calving date, easy/difficult calving, calf sex, calf-ID, calf use, calving number
2. Parentage: FarmID, cow-ID, birth date, sex, father ID, father farm ID, birth year father, father breed, milk-index father, mother ID, mother farm ID, birth year mother, mother breed, milk-index mother, grandfather-ID, grandfather-farm ID, birth year grandfather-, grandfather-breed, milk-index grandfather
3. Inseminations: FarmID, cow-ID, insemination date, ear number used bull, pregnancy diagnosis, pregnancy diagnosis date
4. Culling: FarmID, cow-ID, in date (bought to the farm or birth), culling date, culling reason 1-3
5. test milking: FarmID, Cow-ID, birth year, Test milking date, kg milk, % fat, % protein, somatic cell count (SCC), urea, udder health cathegory
6. 305-day lactation yield: FarmID, Cow-ID, birth year, calving date, calving number, kg milk, kg fat, kg protein, farm breed mean kg fat, farm breed mean kg protein.
7. Dry-off date: FarmID, Cow-ID, dry-off date Show less..
Data contains personal data
Yes
Type of personal data
Far identity number which can be connected to other personal information such as owner adress, contact details etc.
Code key exists
Yes
Time period(s) investigated
2018-08-01 – 2021-09
Data format / data structure
Species and taxons
Geographic spread
Geographic location: Sweden
Geographic description: The farms where the data is collected is situated in the south of Sweden in Västergötland, Småland, Västmanland, Närke, Östergötland, Gotland, Uppland, Värmland, Södermanland and Dalsland.
Responsible department/unit
Department of Animal Nutrition and Management
Contributor(s)
Maria Åkerlind
- Växa Sweden
Kjell Holtenius
- Swedish University of Agricultural Sciences, Department och Animal Nutrition and Management
Erling Strandberg
- Swedish University of Agricultural Sciences, Department of Animal Breeding and Genetics
Cecilia Kronqvist
- Swedish University of Agricultural Sciences, Department och Animal Nutrition and Management
Renée Båge
- Swedish University of Agricultural Sciences, Department of Clinical Sciences
Maria Åkerlind
- Växa Sweden
Kjell Holtenius
- Swedish University of Agricultural Sciences, Department och Animal Nutrition and Management
Erling Strandberg
- Swedish University of Agricultural Sciences, Department of Animal Breeding and Genetics
Cecilia Kronqvist
- Swedish University of Agricultural Sciences, Department och Animal Nutrition and Management
Renée Båge
- Swedish University of Agricultural Sciences, Department of Clinical Sciences
Växa Sweden
Show less..Funding
-
Funding agency:
Swedish farmers’ foundation for agricultural research
- Funding agency's reference number: O-17-20-957
- Project name on the application: Individuellt anpassad laktationslängd för lönsam och hållbar mjölkproduktion
Ethics Review
Uppsala - Ref. Dnr 5.8.18-10126/2018
There is an apporved Ethical review application, but in this part of the project we have not used information that needed ethical approval, only collection of data.
Research area
Animal and dairy science (Standard för svensk indelning av forskningsämnen 2011)
Keywords
Milk production, Fertility, Dairy cattle, Dairy cow, Dairy farm, Reproduction, Artificial insemination (animals), Lactation, Extended, Extended lactation, Calving interval, Voluntary waiting period, Extended calving interval, Extended voluntary waiting period, Cow, Lactation yield, Services per conception, First service conception rate