Effects of Dietary Substitution of Alfalfa Silage with Virginia Fanpetals Silage in Lactating Polish Holstein Friesian Dairy Cows
| Autor: | Maja Fijałkowska, Sylwia Czurgiel, Cezary Purwin, Martyna Momot, Maciej Starczewski, Marta Borsuk, Zenon Nogalski |
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| Rok vydání: | 2020 |
| Předmět: |
Silage
020209 energy Vaccenic acid 02 engineering and technology milk quality Feed conversion ratio Article chemistry.chemical_compound Rumen fluids and secretions Animal science Latin square Lactation lcsh:Zoology milk composition 0202 electrical engineering electronic engineering information engineering medicine dairy cows Dry matter lcsh:QL1-991 Sida hermaphrodita silage lcsh:Veterinary medicine General Veterinary 0402 animal and dairy science food and beverages 04 agricultural and veterinary sciences 040201 dairy & animal science alfalfa substitution medicine.anatomical_structure chemistry Urea lcsh:SF600-1100 Animal Science and Zoology Virginia fanpetals silage |
| Zdroj: | Animals Volume 10 Issue 10 Animals : an Open Access Journal from MDPI Animals, Vol 10, Iss 1746, p 1746 (2020) |
| ISSN: | 2076-2615 |
| DOI: | 10.3390/ani10101746 |
| Popis: | The aim of this study was to evaluate the effect of partial or complete substitution of alfalfa silage with Virginia fanpetals silage in rations based on maize silage on feed intake, digestibility, ruminal fermentation and milk yield and physicochemical characteristics. Nine Polish Holstein Friesian cows in the second half of lactation were fed three experimental diets in a replicated 3 × 3 Latin square design as follows: maize silage + alfalfa silage, maize silage + alfalfa silage and Virginia fanpetals silage in a 50:50 ratio, maize silage + Virginia fanpetals silage. Complete substitution caused an increase in dry matter intake (DMI), total volatile fatty acids (VFA), acetic acid to propionic acid (A/P) ratio, N-NH3 in the rumen contents and milk urea and a decrease in the feed conversion ratio. The partial and complete substitution changed the profile of milk fatty acids, resulting in a slight increase in saturated fatty acids (SFA) and a decrease in unsaturated fatty acids (UFA) as well as in all functional fatty acids except vaccenic acid. The most promising production effects were achieved through partial substitution of alfalfa silage with the Virginia fanpetals silage. |
| Databáze: | OpenAIRE |
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