An experiment was carried out on Large White Yorkshire sows for a duration of 63 days at the Centre of Pig Production and Research, Mannuthy to elucidate the impact of higher feed energy levels through corn oil supplementation. Eighteen Large White Yorkshire pregnant sows were selected three weeks before the anticipated date of parturition and were divided into three uniform groups of six each and were allocated the treatments, T1{(Control ration (18% CP and 3280 kcal/kg ME as per ICAR, 2013)},T2{(Control ration +1 % Corn oil (w/w) (18 % CP and 3365 kcal ME/ kg feed)} and T3 {(Control ration + 2 % Corn oil (w/w) (18% CP and 3450 kcal ME/kg feed)}. The dry matter intake of the sows of the three groups was similar (p>0.05). At 42 days of lactation, the lactational loss in body weight of sows was statistically similar (p>0.05).
A study was carried out to find the influence of different dietary protein levels on
serum biochemical parameters of dairy cows during the transition period. Twenty cross bred cows,
three weeks prior to their expected date of calving were selected from University Livestock Farm
and Fodder Research and Development Scheme (ULF&FRDS), College of Veterinary and Animal
Sciences, Mannuthy as experimental animals. The cows were randomly allotted to two dietary
treatments – T1 (12 per cent CP (crude protein) TMR (Total Mixed Ration)) and T2 (14 per cent
CP TMR). After calving, half of the animals in T1 were allotted to T3 (16 per cent CP TMR) and
remaining half to T4 (18 per cent CP TMR). Similarly half of the animals in T2 were allotted to
T3 and remaining half to T4. All these rations were iso-caloric. The feeding trial was carried out
for a period of 3 weeks prepartum and 45 days postpartum. The serum biochemical parameters
such as serum glucose levels were significantly higher (p<0.05) for groups receiving treatments
T2 & T4 (84.87±2.64 mg/dL) and total protein levels were significantly lower for groups receiving
treatments T1 and T3and the levels of all other biochemical parameters under observation remained
unaffected in all treatment combinations, but the values of NEFA (non-esterified fatty acids) were
below the normal range. Furthermore, there was no occurrence of metabolic diseases in any of the
treatment groups, indicating that dietary treatments were sufficient to meet the requirement of the
animals. Dietary protein levels did not have any significant effect on serum metabolites studied in
the present work.
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