Data di Pubblicazione:
2009
Citazione:
Tannin treated lucerne silage in dairy cow feeding / S. Colombini, G. Colombari, G.M. Crovetto, G. Galassi, L. Rapetti. - In: ITALIAN JOURNAL OF ANIMAL SCIENCE. - ISSN 1594-4077. - 8:suppl. 2(2009), pp. 289-291.
Abstract:
The effects of the addition of tannins to lucerne silage were investigated. At ensiling, chestnut hydrolyzable tannins were added to lucerne forage (T=tannins treated lucerne silage vs C=control lucerne silage). Fifty lactating Holstein cows, fed two diets different for lucerne silage treatment (C or T), were used in a cross-over design. In situ rumen soluble protein fraction (%CP) was higher for C (67.9 vs 59.4; P<0.01), whereas potentially rumen degradable protein (%CP) was lower (24.5 vs 32.1 for C and T; P<0.01). Intestinal rumen escape protein digestibility (%) was numerically higher for T (48.3 vs 54.3). Dry matter intake (21.5 kg/d for both diets) and milk yield (29.8 and 30.2 kg/d for C and T) were not affected by dietary treatment, whereas FCM was slightly higher for T diet (27.5 vs 27.9 kg/d for C and T; P<0.10). Adding tannins to lucerne silage is effective in shifting part of N utilization from the rumen to the intestine, leading to similar productive performance in lactating cows.
Tipologia IRIS:
01 - Articolo su periodico
Keywords:
Lucerne silage; Tannins; Milk production
Elenco autori:
S. Colombini, G. Colombari, G.M. Crovetto, G. Galassi, L. Rapetti
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