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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 ...
Impacts of estrus expression and intensity during a fixed-time AI protocol on parameters associated with fertility and pregnancy success in beef cows.
(Amer Soc Animal Science, 2017-08-01)
Performance Efficiency of Pasture-raised Primiparous Beef Cows of Three Different Biotypes and Two Milk Production Levels
(Universidade Federal do Rio Grande do Sul, 2017)
Effects of a simulated wolf encounter on brain and blood biomarkers of stress-related psychological disorders in beef cows with or without previous exposure to wolves
(Amer Soc Animal Science, 2017-03-01)
This experiment compared mRNA expression of brain-blood biomarkers associated with stress-related psychological disorders, including post-traumatic stress disorder (PTSD), in beef cows from wolf-naive and wolf-experienced ...
Impacts of cow body condition score during gestation on weaning performance of the offspring
(2016-09-01)
This experiment evaluated the impacts of cow body condition score (BCS) during gestation on productive parameters of the offspring. Three hundred multiparous, lactating, non-pregnant Angus × Hereford cows were assigned to ...
Synchronization of ovulation in beef cows (Bos indicus) using GnRH, PGF2 alpha and estradiol benzoate
(Elsevier B.V., 2000-03-15)
The objective of this study was to evaluate protocols for synchronizing ovulation in beef cattle. In Experiment 1, Nelore cows (Bos indicus) at random stages of the estrous cycle were assigned to 1 of the following treatments: ...
Effects of organic or inorganic cobalt, copper, manganese, and zinc supplementation to late-gestating beef cows on productive and physiological responses of the offspring
(Amer Soc Animal Science, 2016-03-01)
Eighty-four multiparous, nonlactating, pregnant Angus x Hereford cows were ranked by pregnancy type (56 AI and 28 natural service), BW, and BCS and allocated to 21 drylot pens at the end of their second trimester of gestation ...
Effects of organic or inorganic cobalt, copper, manganese, and zinc supplementation to late-gestating beef cows on productive and physiological responses of the offspring
(2016-03-01)
Eighty-four multiparous, nonlactating, pregnant Angus × Hereford cows were ranked by pregnancy type (56 AI and 28 natural service), BW, and BCS and allocated to 21 drylot pens at the end of their second trimester of gestation ...
Effects of rumen-protected polyunsaturated fatty acid supplementation on reproductive performance of Bos indicus beef cows
(Amer Soc Animal Science, 2009-12-01)
Five experiments evaluated the effects of rumen-protected PUFA supplementation on reproductive function of Bos indicus beef cows. In Exp. 1, 910 lactating primiparous Nelore cows were randomly assigned to receive 0.4 kg/d ...
The mother-offspring distance as an indicator of the cow-calf attachment from birht to weaning
(In: INTERNATIONAL CONGRESS OF THE ISAE, 3., 2001, Davis, Ca. Davis: UCDavis, 2001. p.194., 2001)