Effect of water restriction on milk yield and quality in Lacaune breed ewes.

摘要: The effect of water restriction on body weight, condition score, milk yield, and composition rheological characteristics in intensively reared Lacaune ewes was evaluated. After 7 days adaptation, the trial lasted 28 days. Thirty lactating (48 ± 5 months age; mean value ± standard deviation) at beginning third lactation month were divided into three groups (n = 10), corresponding to following treatment: a group control received no drinking (W100), two extent 80% 60% W100 daily consumption (W80 W60 respectively). effects assessed experiment (D0), D14 D28. resulted significant decrease yield feed hay due experimental treatment; whereas marked increase both W80 lactose, urea, sodium, sodium chloride content titratable acidity observed. Rheological parameters milk, rennet coagulation time curd-firming positively affected by treatments, with required for formation stable firm curd. Results highlight importance dairy sheep. scarce availability water, significantly affecting production, is worthy particular attention arid area where stress-resistant breeds should be considered. This study underlines that being closely linked breeding habitat its high (about 81%), could reached not limiting factor without reducing genetic expression animals. Less severe restrictions, such as 20% voluntary intake, produce detrimental yield.