Table 7.
CN method; carbon and nitrogen balance (g/kg BW0.75 day) of 8 lactating Murciano-Granadina goats fed HAY (n = 4) or SIL (n = 4) diets. RE and HP are expressed in (kJ/kg BW0.75 day).
| Item 1 | Diet 2 | S.E.M. 3 | p-Value | |
|---|---|---|---|---|
| HAY | SIL | |||
| Cintake | 43.4 | 33.2 | 2.41 | 0.023 |
| Cfeces | 14.2 | 11.2 | 0.85 | 0.073 |
| Curine | 1.0 | 0.8 | 0.12 | 0.449 |
| CCO2 | 17.2 | 16.4 | 0.92 | 0.694 |
| CCH4 | 1.3 | 1.1 | 0.08 | 0.772 |
| Cmilk | 9.5 | 8.0 | 0.76 | 0.361 |
| Cretained body | 0.2 | −4.3 | 1.37 | 0.077 |
| Nintake | 3.2 | 2.6 | 0.15 | 0.047 |
| Nfeces | 1.0 | 0.8 | 0.06 | 0.073 |
| Nurine | 0.6 | 0.5 | 0.08 | 0.790 |
| Nmilk | 0.7 | 0.6 | 0.06 | 0.279 |
| Nretained body | 0.9 | 0.7 | 0.12 | 0.448 |
| RE body | −7 | −238 | 69.47 | 0.074 |
| HPCN | 639 | 658 | 35.97 | 0.753 |
1 Cintake = C intake; Cfeces = C losses in feces; Curine = C losses in urine; CCO2 = C losses in CO2; CCH4 = C losses in methane; Cmilk = recovered C in milk; Cretained body = recovered C in tissue; Nintake = N intake; Nfeces = N losses in feces; Nurine = N losses in urine; Nmilk = recovered N in milk; Nretained body = recovered N in tissue; REbody = recovered energy in tissue; HPCN = heat production according to CN method. 2 Diets were composed of 40% forage (either alfalfa hay [HAY] or alfalfa silage [SIL]) and 60% of concentrate. 3 S.E.M. = standard error of the mean.