Energy partition and methane production in sheep fed with Andropogon Gayanus hays in three different ages
A study was conducted to describe the energy partition and methane production by sheep fed grass hay of Andropogon gayanus harvested at 56, 84 and 112 days of growth. We used the methodology of indirect calorimetry to measure energy losses and to determine the digestible energy (DE), metabolizable (ME) and liquid (EL). The experimental design was completely randomized, consisting of three treatments and six replications. Means were compared by Studant -Newman -Keuls (SNK) test at 5 % significance level. Hays was collected at 56 days, resulted in higher (P < 0.05) digestible energy intake (DEI) in relation to hays 84 and 112 days of regrowth. The daily energy losses through urine, methane and heat increment did not differ (P> 0.05) between treatments. Hay containing material collected at 56 days showed apparent digestibility of the gross energy value higher ( P < 0.5) to the other treatments did not differ ( P> 0.05 ) between them. Hay harvested the 56 days had higher digestible energy and metabolizable energy value compared to other hays that did not differ (P> 0.05). The methane production did not change (P> 0.05) between the treatments.
| Main Authors: | , , , , , |
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| Format: | Digital revista |
| Language: | por |
| Published: |
Facultad de Ciencias Agrarias y Forestales de la Universidad Nacional de La Plata
2019
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| Online Access: | https://revistas.unlp.edu.ar/revagro/article/view/7609 |
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