Effects of Pre-Pubertal Nutrition Plan on Blood Metabolites and Some Physiological Responses in Kurdish Female Lambs at Weaning and Breeding

Pre-pubertal nutrition managements are considered essential for animal health, optimizing production and reproductive performance in livestock.
In this study, the effects of dietary low and high energy and protein provisions on body growth, blood metabolites and inherent safety index were investigated in pre-pubertal Kurdish female lambs.
We fed 40 healthy Kurdish female lambs (30±8.6 days old and weighing 10.2±3.4 kg) were randomly divided into one of two experimental diets in pre-weaning period: high energy and protein (HEP, 2.50 Mcal ME/kg dry matter (DM) and 148 g CP/kg DM) or low energy and protein (LEP, 2.02 Mcal ME/kg DM and 87 g CP/kg DM). At the time of weaning, one half of lambs from each group was randomly separated and assigned to HEP or LEP. So there were four treatment groups in post-weaning period: H-H (HEP pre- and post-weaning); H-L (HEP pre-weaning and LEP post-weaning); L-H (LEP pre-weaning and HEP post-weaning) and L-L (LEP pre and post-weaning, control group). Treatment effects on dry matter intake, milk intake, serum metabolite profiles, inherent safety index and growth were examined.
Pre-pubertal plane were significantly affected above mention parameters at post- weaning period (P It has been observed that diet energy and protein and body energy reserves are much important regulators of growth and health indicators in Kurdish female lambs.