-transparent.png){kind=logo}
Effect of rump conformation on calving interval of 520 Italian Holstein Friesian heifers was evaluated with simultaneous adjustment for herd, year of birth, calving month, age at first parturition, and milk production. All factors, except age at first parturition, were important sources of variation. Heifers with narrow rumps at the pins had the longest calving interval. There were significant differences among the herds. Cows born between 1979 and 1981 had shorter calving intervals, probably resulting from a national plan against bovine infertility initiated in 1981. Cows calving in July had better reproductive performance. There was positive relationship between milk production and calving interval.
O Pedron, and
D Tedesco, and
G Giuliani, and
R Rizzi
June 2017,
Journal of dairy science,
O Pedron, and
D Tedesco, and
G Giuliani, and
R Rizzi
January 2003,
Reproduction, nutrition, development,
O Pedron, and
D Tedesco, and
G Giuliani, and
R Rizzi
June 2019,
Journal of dairy science,
O Pedron, and
D Tedesco, and
G Giuliani, and
R Rizzi
December 1967,
Journal of the American Veterinary Medical Association,
O Pedron, and
D Tedesco, and
G Giuliani, and
R Rizzi
February 2011,
Veterinary journal (London, England : 1997),
O Pedron, and
D Tedesco, and
G Giuliani, and
R Rizzi
October 2007,
Animal reproduction science,
O Pedron, and
D Tedesco, and
G Giuliani, and
R Rizzi
November 1987,
The Canadian veterinary journal = La revue veterinaire canadienne,
O Pedron, and
D Tedesco, and
G Giuliani, and
R Rizzi
March 1989,
The Veterinary record,
O Pedron, and
D Tedesco, and
G Giuliani, and
R Rizzi
June 2005,
The Veterinary record,
O Pedron, and
D Tedesco, and
G Giuliani, and
R Rizzi
April 2011,
Journal of dairy science,
