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For a period of three years the effect of applyying 0, 60, 120 and 180 kg of N/ha/yr (X1), with a 0, 14, 28 and 42-day resting period (X2) in a Faragua pasture was studied. Incomplete factorial design with 0-0, 0-42, 60-14, 60-28, 120-14, 120-28, 180-0 and 180-42 combinations for N and resting periods, respectively, were used. There was a 7-day grazing period during the rainy season. Twenty four-month-old Brahman steers weighing an average of 273 kg liveweight were used, providing 3 animals/treatment with an allocation of 5 kg DM/100 kg of liveweight in a system of variable stocking rate. Nitrogen rates from 60 up to 180 kg/ha/yr did not significantly increase (P>.05) stocking rate; however, there was a marked effect of N (P<.05) on stocking rates (4.3 steers/ha) compared to the unfertilized treatment (2.75 steers/ha). Stocking rate varied significantly (P<.05) from 2.6 to 5.2 steers/ha for the 14 and 42-day resting period, respectively. Therefore, it can be concluded that management of Faragua pasture during the rainy season with 42-day resting period, 7 days of grazing and of 60 kg N/ha/yr with a mean stocking rate of 4.0 steers/ha averaging 273 kg of liveweight, it is possible to obtain between 600-800 kg of beef/ha/yr, results comparable to those obtained with improved pastures.
| Main Authors: | , , , |
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| Format: | Digital revista |
| Language: | spa |
| Published: |
Instituto de Innovación Agropecuaria de Panamá
1990
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| Online Access: | http://www.revistacienciaagropecuaria.ac.pa/index.php/ciencia-agropecuaria/article/view/517 |
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| Summary: | For a period of three years the effect of applyying 0, 60, 120 and 180 kg of N/ha/yr (X1), with a 0, 14, 28 and 42-day resting period (X2) in a Faragua pasture was studied. Incomplete factorial design with 0-0, 0-42, 60-14, 60-28, 120-14, 120-28, 180-0 and 180-42 combinations for N and resting periods, respectively, were used. There was a 7-day grazing period during the rainy season. Twenty four-month-old Brahman steers weighing an average of 273 kg liveweight were used, providing 3 animals/treatment with an allocation of 5 kg DM/100 kg of liveweight in a system of variable stocking rate. Nitrogen rates from 60 up to 180 kg/ha/yr did not significantly increase (P>.05) stocking rate; however, there was a marked effect of N (P<.05) on stocking rates (4.3 steers/ha) compared to the unfertilized treatment (2.75 steers/ha). Stocking rate varied significantly (P<.05) from 2.6 to 5.2 steers/ha for the 14 and 42-day resting period, respectively. Therefore, it can be concluded that management of Faragua pasture during the rainy season with 42-day resting period, 7 days of grazing and of 60 kg N/ha/yr with a mean stocking rate of 4.0 steers/ha averaging 273 kg of liveweight, it is possible to obtain between 600-800 kg of beef/ha/yr, results comparable to those obtained with improved pastures. |
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