Effect of Calving Season, Calving Year and Lactation Number on the Milk Yield Traits in Holstein Cows Raising in Şanlıurfa
| Autor: | Tuğra Akkuş, Durhasan Mundan, Yahya Öztürk, Cihan Kaçar, Abuzer Kafar Zonturlu |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
Yield (finance)
lactation number herd health management lcsh:S food and beverages Ice calving calving season General Medicine Recording system Biology Herd health lcsh:S1-972 lcsh:Agriculture Animal science Milk yield medicine.anatomical_structure Lactation Calving interval medicine holstein lcsh:Agriculture (General) milk yield characteristics |
| Zdroj: | Turkish Journal of Agriculture: Food Science and Technology, Vol 8, Iss 2, Pp 313-317 (2020) |
| Popis: | The aim of the present study is to investigate the impact of some environmental factors on the descriptive values of milk yield characteristics in Holstein cows. For this purpose, a total of 241 lactations belonging to 62 Holstein cows had been kept as breeders in a private establishment were evaluated for 7 years in terms of milk yield. When the recording system of the establishment was examined, the average values of lactation yield (LY), corrected 305 day milk yield (305-dMY), average daily milk yield (ADMY) and lactation length (LL) were 9356.2±126.1 kg, 8549.2±105.8 kg, 28.0±0.3 kg and 315.0±2.3 days, respectively. The least mean squares (LMS) of LY was calculated as 9324.9 kg. It was found that the effect of the calving season on the LY was statistically significant (P |
| Databáze: | OpenAIRE |
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