Theme 19: Use of Supplements
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Publication Date
2001
Location
Brazil
Description
The objective of this study was to determine whether the performance of beef heifers of different genetic groups was affected by breed x nutritional environment interactions. Sixty four weaned heifers, 16 per genetic group: ½ Angus + ½ Nellore (AN), ½ Canchim + ½ Nellore (CN), ½ Simmental + ½ Nellore (SN) and pure Nellore (NE), were used with or without 3.0 kg of concentrate.animal-1 .day-1 in a fertilized coastcross pasture under rotational grazing system. There were effects of genetic group and supplementation (P< 0.05) on the weight and age at first estrus, but there was no interaction between them. In a rotational grazing system with 4000 kg of available dry matter per hectare with 13% of crude protein, the crossbred AN, supplemented or not, was more precocious (111 days) than Nellore heifers, showing the first estrus at 356 days of age and 324 kg of live weight.
Citation
Rodrigues, Armando de A.; da Cruz, Geraldo M.; Barbosa, Rogério T.; de Alencar, Maurício M.; Corrêa, Luciano de A.; and de Oliveira, Gilson P., "Performance of Beef Heifers of Various Genetic Groups, Supplemented or Not, in Coastcross Pastures" (2001). IGC Proceedings (1985-2023). 9.
(URL: https://uknowledge.uky.edu/igc/19/19/9)
Included in
Agricultural Science Commons, Agronomy and Crop Sciences Commons, Plant Biology Commons, Plant Pathology Commons, Soil Science Commons, Weed Science Commons
Performance of Beef Heifers of Various Genetic Groups, Supplemented or Not, in Coastcross Pastures
Brazil
The objective of this study was to determine whether the performance of beef heifers of different genetic groups was affected by breed x nutritional environment interactions. Sixty four weaned heifers, 16 per genetic group: ½ Angus + ½ Nellore (AN), ½ Canchim + ½ Nellore (CN), ½ Simmental + ½ Nellore (SN) and pure Nellore (NE), were used with or without 3.0 kg of concentrate.animal-1 .day-1 in a fertilized coastcross pasture under rotational grazing system. There were effects of genetic group and supplementation (P< 0.05) on the weight and age at first estrus, but there was no interaction between them. In a rotational grazing system with 4000 kg of available dry matter per hectare with 13% of crude protein, the crossbred AN, supplemented or not, was more precocious (111 days) than Nellore heifers, showing the first estrus at 356 days of age and 324 kg of live weight.
