Nutritional and net energy value of fermented olive wastes in rations of lactating ewes
2007
Christodoulou, V.,National Agricultural Research Foundation, Giannitsa (Greece). Animal Research Inst. | Bampidis, V.A.,National Agricultural Research Foundation, Giannitsa (Greece). Animal Research Inst. | Robinson, P.H.,University of California, Davis (USA). Dept. of Animal Science | Israilides, C.J.,National Agricultural Research Foundation, Lycovrissi Athens (Greece). Inst. of Technology of Agricultural Products | Giouzelyiannis, A.,National Agricultural Research Foundation, Giannitsa (Greece). Animal Research Inst. | Vlyssides, A.,National Technical Univ., Athens (Greece). Dept. of Chemical Engineering
The objective of this study was to determine the net energy for lactation (NEl) concentration of modern fermented olive wastes (FOW) by feeding them to lactating Chios ewes, using diets containing barley grain, wheat grain, sugar beet pulp and lucerne meal. Eighteen ewes were allocated, after equal distribution for milk yield, body weight and lactation number, into three treatments of 6 ewes each in a Youden square experimental design with 4 consecutive periods of 14 days. Ewes in all groups were offered a concentrate mixture ad libitum and lucerne hay. FOW were added to the concentrate mixture (0, 100 or 200 kg/t). There were no differences among groups in milk protein (60.0 g/kg), lactose (53.0 g/kg) or ash (9.6 g/kg) concentrations, but fat concentration increased linearly (P less than 0.01) with increasing dietary levels of FOW. Average milk yield (1,137 g/day) and yields of components tended to decrease significantly with increasing FOW feeding. The best estimate of the NEl density of FOW was 2.55 MJ/kg DM at 2.7xM NE intake. In conclusion, FOW is a low protein, high fibre and low NEl feedstuff that will be of limited value in rations of high producing lactating ewes.
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