Research on Some Factors Influencing the Milk Production Indices in Romanian Black and White Cows
Researches were carried out in 60 dairy farms rearing 658 Romanian Black and White (RBW) cows. Dairy cows were enrolled in the official performance control, performed by a local association. Farms were categorized by size (number of dairy cows) as small (≤10), medium (11-25) and large (>25), acco...
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| Format: | Article |
| Language: | English |
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Agroprint Timisoara
2023-09-01
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| Series: | Scientific Papers Animal Science and Biotechnologies |
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| Online Access: | https://spasb.ro/index.php/public_html/article/view/742 |
| _version_ | 1797215047631503360 |
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| author | Ligia Berzava Alin Bucur Timeea Fazekaș Andrei Văscuț Sergiu Avram Adrian Grozea Silvia Erina |
| author_facet | Ligia Berzava Alin Bucur Timeea Fazekaș Andrei Văscuț Sergiu Avram Adrian Grozea Silvia Erina |
| author_sort | Ligia Berzava |
| collection | DOAJ |
| description | Researches were carried out in 60 dairy farms rearing 658 Romanian Black and White (RBW) cows. Dairy cows were enrolled in the official performance control, performed by a local association. Farms were categorized by size (number of dairy cows) as small (≤10), medium (11-25) and large (>25), according to the specific conditions in Hunedoara County. Besides the farm size, the influence of calving season and parity was assessed on the milk production indices: milk yield, fat percentage and yield, and protein percentage and yield. Maturity equivalent (ME) milk, fat and protein yields were 50% (p<0.01) higher in large farms (7549± 87.44 kg milk, 309.6± 4.05 kg fat, and 252.9± 2.90 kg protein) than in medium and small farms. Fat and protein percentages in milk increased as cows grew older (by 3-5%, p<0.001). Calving season had a significant influence on ME milk production indices, as well (p<0.01). Thus, milk yield, fat yield, fat percentage and protein yield were higher in winter calvings (7175.9 kg vs. 7060.8 kg, 292.1 kg vs. 286.1 kg, 4.1% vs. 4.0% and 247.9 kg vs. 237.6 kg, respectively), while milk protein percentage was higher in summer calvings (4.3% vs. 3.6%). |
| first_indexed | 2024-04-24T11:23:51Z |
| format | Article |
| id | doaj.art-bc57205287f04e9bbb28e267cd9c4fed |
| institution | Directory Open Access Journal |
| issn | 1841-9364 2344-4576 |
| language | English |
| last_indexed | 2024-04-24T11:23:51Z |
| publishDate | 2023-09-01 |
| publisher | Agroprint Timisoara |
| record_format | Article |
| series | Scientific Papers Animal Science and Biotechnologies |
| spelling | doaj.art-bc57205287f04e9bbb28e267cd9c4fed2024-04-11T04:04:13ZengAgroprint TimisoaraScientific Papers Animal Science and Biotechnologies1841-93642344-45762023-09-015318080742Research on Some Factors Influencing the Milk Production Indices in Romanian Black and White CowsLigia Berzava0Alin Bucur1Timeea Fazekaș2Andrei Văscuț3Sergiu Avram4Adrian Grozea5Silvia Erina6Banat´s University of Agricultural Sciences and Veterinary Medicine „King Michael I of Romania” from Timisoara, Bioengineering Faculty of Animal Resources, 300645, Timisoara, Calea Aradului 119, Timis, RomaniaBanat´s University of Agricultural Sciences and Veterinary Medicine „King Michael I of Romania” from Timisoara, Bioengineering Faculty of Animal Resources, 300645, Timisoara, Calea Aradului 119, Timis, RomaniaBanat´s University of Agricultural Sciences and Veterinary Medicine „King Michael I of Romania” from Timisoara, Bioengineering Faculty of Animal Resources, 300645, Timisoara, Calea Aradului 119, Timis, RomaniaBanat´s University of Agricultural Sciences and Veterinary Medicine „King Michael I of Romania” from Timisoara, Bioengineering Faculty of Animal Resources, 300645, Timisoara, Calea Aradului 119, Timis, RomaniaBanat´s University of Agricultural Sciences and Veterinary Medicine „King Michael I of Romania” from Timisoara, Bioengineering Faculty of Animal Resources, 300645, Timisoara, Calea Aradului 119, Timis, RomaniaBanat´s University of Agricultural Sciences and Veterinary Medicine „King Michael I of Romania” from Timisoara, Bioengineering Faculty of Animal Resources, 300645, Timisoara, Calea Aradului 119, Timis, RomaniaBanat´s University of Agricultural Sciences and Veterinary Medicine „King Michael I of Romania” from Timisoara, Bioengineering Faculty of Animal Resources, 300645, Timisoara, Calea Aradului 119, Timis, RomaniaResearches were carried out in 60 dairy farms rearing 658 Romanian Black and White (RBW) cows. Dairy cows were enrolled in the official performance control, performed by a local association. Farms were categorized by size (number of dairy cows) as small (≤10), medium (11-25) and large (>25), according to the specific conditions in Hunedoara County. Besides the farm size, the influence of calving season and parity was assessed on the milk production indices: milk yield, fat percentage and yield, and protein percentage and yield. Maturity equivalent (ME) milk, fat and protein yields were 50% (p<0.01) higher in large farms (7549± 87.44 kg milk, 309.6± 4.05 kg fat, and 252.9± 2.90 kg protein) than in medium and small farms. Fat and protein percentages in milk increased as cows grew older (by 3-5%, p<0.001). Calving season had a significant influence on ME milk production indices, as well (p<0.01). Thus, milk yield, fat yield, fat percentage and protein yield were higher in winter calvings (7175.9 kg vs. 7060.8 kg, 292.1 kg vs. 286.1 kg, 4.1% vs. 4.0% and 247.9 kg vs. 237.6 kg, respectively), while milk protein percentage was higher in summer calvings (4.3% vs. 3.6%).https://spasb.ro/index.php/public_html/article/view/742cowsfarm sizemilk productionromanian black and whiteseason |
| spellingShingle | Ligia Berzava Alin Bucur Timeea Fazekaș Andrei Văscuț Sergiu Avram Adrian Grozea Silvia Erina Research on Some Factors Influencing the Milk Production Indices in Romanian Black and White Cows Scientific Papers Animal Science and Biotechnologies cows farm size milk production romanian black and white season |
| title | Research on Some Factors Influencing the Milk Production Indices in Romanian Black and White Cows |
| title_full | Research on Some Factors Influencing the Milk Production Indices in Romanian Black and White Cows |
| title_fullStr | Research on Some Factors Influencing the Milk Production Indices in Romanian Black and White Cows |
| title_full_unstemmed | Research on Some Factors Influencing the Milk Production Indices in Romanian Black and White Cows |
| title_short | Research on Some Factors Influencing the Milk Production Indices in Romanian Black and White Cows |
| title_sort | research on some factors influencing the milk production indices in romanian black and white cows |
| topic | cows farm size milk production romanian black and white season |
| url | https://spasb.ro/index.php/public_html/article/view/742 |
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