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Articolul urmator |
315 4 |
Ultima descărcare din IBN: 2023-06-13 11:06 |
Căutarea după subiecte similare conform CZU |
636.2.082.231 (4) |
Large ruminants. Cattle, oxen (206) |
SM ISO690:2012 GRANACI, Vera, FOCŞA, Valentin, CONSTANDOGLO, Alexandra. Performanțele de reproducție în raport cu intensitatea de folosire a potențialului productiv al vacilor de rasa Holstein de diversă origine. In: Ştiinţa Agricolă, 2021, nr. 2, pp. 92-98. ISSN 1857-0003. DOI: https://doi.org/10.5281/zenodo6032842 |
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Ştiinţa Agricolă | ||||||
Numărul 2 / 2021 / ISSN 1857-0003 /ISSNe 2587-3202 | ||||||
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DOI:https://doi.org/10.5281/zenodo6032842 | ||||||
CZU: 636.2.082.231 | ||||||
Pag. 92-98 | ||||||
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The main reproduction indices and their repercussions on the milk productivity performance of Holstein cows of Dutch, German and French origin, exploited in the Republic of Moldova, were studied. The most relevant results were found in cows originating in the Netherlands, surpassing those of French origin with some statistically authentic differences, cows of German origin occupying an intermediate position. The excessive increase of service-period contributes to the increase of milk yield per lactation, and the average amount of milk per day decreases by about 8,1-19,2%, decreasing the intensity of cow use. In order to optimize the intensity of use of Holstein cows of Dutch origin, in the conditions of the Republic of Moldova it seems reasonable that those with milk productivity 8 000-11 000 kg per normal lactation to be fertilized in the first 3 months after calving, those with higher productivity of 11 000 kg should be fertilized at the latest 120 days after calving. |
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Cuvinte-cheie Cows, Holstein breed, Reproductive capacity, correlation, milk productivity, service-period |
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