Consequences of Transition Treatments on Fertility and Associated Metabolic Status for Dairy Cows in Early Lactation.
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BORIS DOI
Date of Publication
June 25, 2020
Publication Type
Article
Division/Institute
Author
Ma, Junnan | |
van Hoeij, Renny J | |
Kok, Akke | |
Lam, Theo J G M | |
Kemp, Bas | |
van Knegsel, Ariette T M |
Series
Animals
ISSN or ISBN (if monograph)
2076-2615
Publisher
MDPI
Language
English
Publisher DOI
PubMed ID
32630569
Uncontrolled Keywords
Description
This study aimed to (1) investigate effects of reducing postpartum dietary energy level for cows after a 0-d dry period (DP) on resumption of ovarian cyclicity and reproductive performance, (2) relate days open with other reproductive measures, and (3) relate onset of luteal activity (OLA) and days open with metabolic status in early lactation. Holstein-Friesian dairy cows were randomly assigned to 1 of 3 transition treatments: no DP and low postpartum dietary energy level from 22 days in milk( DIM )onwards (0-d DP (LOW)) (n = 42), no DP and standard postpartum dietary energy level (0-d DP (STD)) (n = 43), and a short DP and standard postpartum dietary energy level (30-d DP (STD)) (n = 43). Milk progesterone concentration was determined three times per week until 100 DIM. Plasma metabolite and hormone concentrations were measured weekly until week 7 postpartum. Reducing postpartum dietary energy level in older cows (parity ≥ 3) after no DP and 22 DIM did not affect milk production but prevented a positive energy balance and shortened the interval from calving to OLA. In addition, services per pregnancy and days open were reduced in cows of parity ≥ 3 on 0-d DP (LOW), compared with cows of parity ≥ 3 with 0-d DP (STD), but not in cows of parity 2.
File(s)
File | File Type | Format | Size | License | Publisher/Copright statement | Content | |
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animals-10-01100-v2.pdf | Adobe PDF | 1.78 MB | published |