Abstract Plasma cortisol and milk production responses of 45 lactating Comisana sheeps (4th5th parity), divided into three homogeneous groups of 15 subject each, were used to evaluate the effects of two different levels of partial substitution of a complete feed with hydroponically germinating seeds. Germinated oat was employed after 7 days of hydroponic growth. The three groups received the following diets: Control group (T) received only complete feed. The other 2 groups were fed on diet containing different levels of hydroponically germinating oat (1,5 kg – group A; 3 kg – group B). All the subjects have shown to accept the diets because the per capita ration was always completely consumed. In the second month, the A and B groups showed lower average values of cortisol (P<0.01) and a statistically significant increase in milk production as compared to T (P<0.05 and P<0.001). The obtained data induced to conclude that integration with hydroponically germinating oat in partial substitution of the complete feed does not modify biochemical and hematological parameters and seems to produce an improvement in animal welfare and production of milk.
[1]
P. Panagakis,et al.
Effects of three different floor types on the posture behavior of semi-intensively reared dairy ewes of the Boutsiko breed
,
2004
.
[2]
L. Romero,et al.
Physiological stress in ecology: lessons from biomedical research.
,
2004,
Trends in ecology & evolution.
[3]
J. E. Schneider.
Energy balance and reproduction
,
2004,
Physiology & Behavior.
[4]
G. Walsberg.
How useful is energy balance as a overall index of stress in animals?
,
2003,
Hormones and Behavior.
[5]
A. Sevi,et al.
Effects of two different housing systems on behavior, physiology and milk yield of Comisana ewes.
,
2001,
Small ruminant research : the journal of the International Goat Association.
[6]
A. Branca,et al.
[Use of a protein-free medium for the in vitro development of sheep embryos].
,
1992,
Bollettino della Societa italiana di biologia sperimentale.