| Autor: |
Vinu M. Nampoothiri, Madhu Mohini, Bilal A. Malla, Goutam Mondal, Sujata Pandita |
| Jazyk: |
angličtina |
| Rok vydání: |
2018 |
| Předmět: |
|
| Zdroj: |
Animal Nutrition, Vol 4, Iss 2, Pp 215-221 (2018) |
| Druh dokumentu: |
article |
| ISSN: |
2405-6545 |
| DOI: |
10.1016/j.aninu.2018.01.009 |
| Popis: |
The present study investigated the effects of different dietary forage to concentrate ratios on animal performance, and enteric and manure greenhouse gas emissions in growing calves. Fifteen male Murrah calves (153.5 ± 18.17 kg; 6 to 12 months) were randomly assigned to 3 dietary treatments and fed corn fodder, wheat straw and concentrate in 3 different proportions: 20:60:20 (C20); 20:40:40 (C40) and 10:30:60 (C60), for a period of 120 days. Increasing dietary concentrate proportion had no significant (P > 0.05) effect on dry matter intake (DMI) but increased crude protein (CP) and total digestible nutrient intake (P 0.05). The apparent digestibility of dry matter, organic matter and CP were higher (P 0.05). Daily methane (CH4) emission (g/d), CH4 energy loss (MJ/d) and CH4 yield (CH4 g/kg organic matter intake [OMI], CH4 g/kg digestible OMI, and CH4 % of metabolizable energy intake) were significantly higher for C20 compared with C60 (P 0.05). Manure CH4 (g/kg DMI) and nitrous oxide (N2O mg/kg nitrogen) emissions were not affected (P > 0.05), but N2O emission on mg/kg DM basis was significantly higher (P |
| Databáze: |
Directory of Open Access Journals |
| Externí odkaz: |
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