REPRODUCTIVE AND PRODUCTIVE PERFORMANCE OF LACTATING GOATS QUAFFED LINSEED OIL AND SUNFLOWER OIL

ABSTRACT
Alteration of lipid and fatty acids (FA's) composition in ration could improve reproductive and productive performance of livestock. The present study aimed to define the effect of quaffing dairy goats with linseed oil or sunflower oil on reproductive and productive performance. Fifteen lactating Zaraibi goats were divided into three groups (5 each) namely T1, T2 and T3 groups. T1 used as control that nourished a basal ration (offered two times at 8 am and 3 pm daily) contained 50% concentrate feed mixture (CFM) + 50% roughage (offered at rate 3:1) included 750 gm berseem hay (BH) plus 250 gm rice straws RS. Whilst, T2 (quaffed linseed oil) and T3 (quaffed sunflower oil) were received previous basal ration plus the two oil types that orally given at 3% of dry matter intake which nearly equal 53gm oil type/head/ day. The amounts of oils were offered to T2 and T3 groups two times daily at 8:00 am (27 gm oil type /head/ day) and at 3:00 pm (26 gm oil type/head/day). These treatments were offered to goats of T1, T2 and T3 21 days pre-mating season (as flushing period) and continued up to seventeen weeks of lactation season. Then, three experiments were carried out on T1, T2 and T3 groups. The first experiment was to investigate the effect of linseed and sunflower oils on body weight (BW) of goats pre-mating season, post- mating season, pre-trimester of pregnancy (at 100 days), at 145 days pre-parturition, post- parturition, litter size and total weight of kids at postnatal. Second experiment, was carried out to investigate the effect of linseed and sunflower oils on amount of suckling milk, commercial milk and milk composition and body weight of kids. Third experiment was to evaluate blood metabolism through measuring glucose, total protein, albumin, globulin, triglycerides and cholesterol levels as results of linseed oil and sunflower oil. Quaff of linseed oil in T2 and sunflower oil in T3 improved (P<0.05) BW of goats during gestation, fertility rate and litter size than goats in T1 (first experiment). Goats in T1 recorded lower (P<0.05) suckling and commercial milk amounts within (P<0.05) lesser values of fat (%) and protein (%) during suckling and lactation periods than T2 and T3 groups. In addition, body weight of kids was (P<0.05) heavier with T2 and T3 groups compared to kids nursed in T1 group (second experiment). Quaffing oils to T2 and T3 goats caused a higher serum glucose, total protein, albumin, globulin concentrations (P>0.05) and reduced triglycerides and cholesterol concentrations (P>0.05) compared to all blood serum parameters in T1 (third experiment). Data indicated that, quaff of linseed or sunflower oils to lactating goats had beneficial effects on reproductive and productive parameters. Oils could enhance reproductive and productive performance, but sunflower oil is cheaper thus get better economical efficiency than linseed oil.