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Teodor MARUȘCA1 Abstract. The paper includes several zoopastoral indices determined according to the climatic values and the floristic composition of the grassy carpet of permanent grasslands established in air temperature measurements and long-term animal experiments. The duration of the optimal grazing season is equal to the daily duration of the average air temperature between 10-20 0 C and decreases at altitude between 500-2,500 m with a gradient of 7.5 days / 100 m. The production of green mass (GM) evaluated based on the floristic survey of extensively used permanent grasslands is 0.2-31.5 t/ha and the pastoral value index (PV) is 0-100. The consumption of GM for one liter of cow’s milk depending on PV is between 4-9 kg GM and for 1 kg of weight gain in young bulls is 50-100 kg GM. The total production per hectare of milk or weight gain is calculated by dividing the production of GM (kg/ha) by the average consumption of GM (kg) for 1 liter or 1 kg of animal product. By dividing the evaluated production of GM (kg/ha) by the daily requirement of GM / LU of 65 kg multiplied by the duration of the grazing season (days), the optimal loading per hectare is calculated. Keywords: zoopastoral indices, grazing season duration, milk production, weight gain, cattle. DOI 10.56082/annalsarsciagr.2026.1.179 Read full article 1Eng., PhD. Teodor MARUȘCA, Research and Development Institute for Grasslands Brașov, Romania, Full Member of The Academy of Romanian Scientists, (e-mail: maruscat@yahoo.com). |
PUBLISHED in Annals Academy of Romanian Scientists Series on Agriculture, Silviculture and Veterinary Medicine
ISSN PRINT 2069-1149 ISSN ONLINE 2344-2085 |
