Buscar
Mostrando ítems 41-50 de 959
Use of supplements and variation in the stocking rate in cow-calf systems on temperate pastures in Chile: a simulation approach
(CSIRO PUBLISHING, 2009)
A simulation model was developed to evaluate the productive and economic effect of the variation in feed practices and stocking rate of a cow-calf system in Chile. Winter supplementation at grazing, stocking rate and ...
Effects of melengestrol acetate supplementation after fixed-timed artificial insemination on pregnancy rates of Bos indicus beef cows
(2017-12-01)
This experiment compared pregnancy rates in Bos indicus cows assigned to temporary calf weaning (TCW) or eCG administration during estrus synchronization, with or without melengestrol acetate (MGA) supplementation after ...
Frequency of Neospora caninum infections in beef cow-calf operations under extensive management
(Elsevier Science, 2016-03)
The aim of this study was to evaluate the frequencies of Neospora caninum horizontal and vertical transmissions in beef cow-calf operations under three different extensive management systems: group A: 0.75 head per hectare ...
Ovulation time in suckled beef cows is anticipated by use of low doses of progesterone and temporary calf removal on fixed timed AI protocol
(2016-12-01)
This study was designed to evaluate the effect of concentrations of P4 during a fixed-time artificial insemination (TAI) protocol and 48 hours temporary calf removal (CR; i.e., calves were temporally weaned for 48 hours) ...
Suckling behaviour of Nelore, Gir and Caracu calves and their crosses
(Elsevier B.V., 2014)
Voluntary intake of dry matter and performance of Nellore cows and their Nellore and crossbred Simental × Nellore calves
(Sociedade Brasileira de Zootecnia, 2011-11-01)
This study aimed to investigate the influence of calf genetic group on the performance of Nellore lactating cows. The variables studied included milk ingestion, pasture intake, calf weight gain and cow body weight. A total ...
Voluntary intake of dry matter and performance of Nellore cows and their Nellore and crossbred Simental x Nellore calves
(Revista Brasileira Zootecnia Brazilian Journal Animal Sci, 2011-11-01)
This study aimed to investigate the influence of calf genetic group on the performance of Nellore lactating cows. The variables studied included milk ingestion, pasture intake, calf weight gain and cow body weight. A total ...
Voluntary intake of dry matter and performance of Nellore cows and their Nellore and crossbred Simental × Nellore calves
(Sociedade Brasileira de Zootecnia, 2011-11-01)
This study aimed to investigate the influence of calf genetic group on the performance of Nellore lactating cows. The variables studied included milk ingestion, pasture intake, calf weight gain and cow body weight. A total ...
Voluntary intake of dry matter and performance of Nellore cows and their Nellore and crossbred Simental x Nellore calves
(Revista Brasileira Zootecnia Brazilian Journal Animal Sci, 2011-11-01)
This study aimed to investigate the influence of calf genetic group on the performance of Nellore lactating cows. The variables studied included milk ingestion, pasture intake, calf weight gain and cow body weight. A total ...