Linear versus seasonal growth of dairy heifers decreased age at puberty but did not affect first lactation milk production. Issue 1 (2nd January 2021)
- Record Type:
- Journal Article
- Title:
- Linear versus seasonal growth of dairy heifers decreased age at puberty but did not affect first lactation milk production. Issue 1 (2nd January 2021)
- Main Title:
- Linear versus seasonal growth of dairy heifers decreased age at puberty but did not affect first lactation milk production
- Authors:
- Handcock, Rhiannon C.
Jenkinson, Catriona M. C.
Laven, Richard
McNaughton, Lorna R.
Lopez-Villalobos, Nicolas
Back, Penny J.
Hickson, Rebecca E. - Abstract:
- ABSTRACT: The aim of this study was to compare conformation, age at puberty and subsequent milk production of Holstein–Friesian–Jersey crossbred heifers grown in a linear trajectory (Target; n = 55) between 6- and 15-month target liveweights (LWT), with heifers grown in a seasonal manner (Seasonal; n = 55) of slow over first winter and fast over spring. Heifers that grew to Target attained puberty 38 days earlier than heifers that grew in a seasonal manner; however, no difference between treatments in the date of first calving occurred. Heifers in the seasonal treatment were 1 cm ( P = .032) taller than those in the target treatment, but similar in girth and length. There was no effect of treatment on first lactation milk production. These results suggest that provided heifers reached their pre-mating target LWT, the growth trajectory between target LWT at 6 and 15 months of age did not negatively impact frame size or first lactation milk production.
- Is Part Of:
- New Zealand journal of agricultural research. Volume 64:Issue 1(2021)
- Journal:
- New Zealand journal of agricultural research
- Issue:
- Volume 64:Issue 1(2021)
- Issue Display:
- Volume 64, Issue 1 (2021)
- Year:
- 2021
- Volume:
- 64
- Issue:
- 1
- Issue Sort Value:
- 2021-0064-0001-0000
- Page Start:
- 83
- Page End:
- 100
- Publication Date:
- 2021-01-02
- Subjects:
- Live weight -- growth -- puberty -- milk production -- reproduction -- dairy heifer -- live weight target
Agriculture -- Periodicals
Agriculture -- New Zealand -- Periodicals
Animal culture -- Periodicals
Animal culture -- New Zealand -- Periodicals
630.99305 - Journal URLs:
- http://www.tandfonline.com/toc/tnza20/current ↗
http://www.tandfonline.com/ ↗ - DOI:
- 10.1080/00288233.2019.1607404 ↗
- Languages:
- English
- ISSNs:
- 0028-8233
- Deposit Type:
- Legaldeposit
- View Content:
- Available online (eLD content is only available in our Reading Rooms) ↗
- Physical Locations:
- British Library DSC - BLDSS-3PM
British Library STI - ELD Digital store - Ingest File:
- 22697.xml