1. KAUTIR (Kerala Agricultural University Theses Information and Retrieval)
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Item Studies on the nutrient requirements of kids(Department of Animal Nutrition, College of Veterinary and Animal Sciences, Mannuthy, 1979) Mercy, A D; Sivaraman, EAn investigation was carried out to find out the nutrient requirements for optimum growth in kids. Twenty four Alpine – Malabari crossbred kids of 3 4 months of age formed the experimental subjects for the study. The animals, divided into three identical groups (groups 1, 11 and 111), were maintained on three different levels of nutrient intake for over a total period of 4 ½ months, the parameters recorded during the course of the study being average daily body weight gain, drymatter intake, feed conversion efficiency, digestibility coefficients of nutrients, nitrogen balance, mineral balance and haematological constituents. The average daily gain and feed conversion efficiency recorded for animals in the three groups 1, 11 and 111 were found to be 63.7 + 5.3, 64.4 + 5.0 and 67.6 + 2.0 g and 7.0 + 0.7, 7.5 + 0.5 and 7.9 + 0.3 respectively. The average drymatter consumption of animals were 3.1 + 0.2, 3.5 + 0.3 and 3.6 + 0.3 kg per 100 kg body weight respectively for the three groups 1, 11 and 111. The data collected for the haematological constituents were found to lies within the normal range for the species indicating that all the animals under the three dietary regimes were maintaining normal and sound nutritional status. The requirements arrived at for protein and energy for unit gain in body weight were 0.86 + 0.06 0.90 + 0.06 and 0.89 + 0.03 kg D. C. P. and 4.84 + 0.4, 5.20 + 0.30 and 5.31 + 0.19 kg T. D. N. for the animals in groups 1, 11 and 111 respectively. The requirements of D. C. P., T.D. N., calcium and Phosphorus arrived at from the results obtained during the course of the experiment are considered optimum for normal growth in Alpine – Malabari crossbred kids.Item Growth performance of broiler chicken fed on fermented fish waste silage ration(Department of Animal Nutrition, College of Veterinary and Animal Sciences, Mannuthy, 2005) Smitha, N F; Mercy, A DAn investigation spread over a period of six weeks was carried out to study the effect of replacing unsalted dried fish with fermented fish waste silage on nutrient utilization and growth performance in broiler chicken. One hundred and eighty day-old broiler chicks (Vencob) were divided into three identical groups having five replicates in each group with 12 birds in each replicate and allotted randomly into three dietary treatments viz., T1, T2 and T3. The three groups of birds were maintained on isonitrogenous and isocaloric rations in which protein of unsalted dried fish was replaced by protein from fermented fish waste silage at 0, 50 and 100 per cent levels. Birds were fed broiler starter rations up to four weeks of age and then they were switched to broiler finisher rations till the end of the experiment. The birds maintained on the three dietary treatments T1, T2 and T3 had almost similar growth rate (P>0.05) with a cumulative mean body weight gain of 1401.45, 1434.48 and 1491.31 g, respectively. The cumulative feed intake and cumulative feed conversion efficiency did not differ significantly (P>0.05) between treatments, the cumulative feed conversion efficiency being 2.12, 2.08 and 2.09, respectively for the birds of T1, T2 and T3. Nitrogen retention and balance were similar for the diets T1, T2 and T3. The retention and balance of calcium and phosphorus were also similar. Serum calcium, phosphorus, cholesterol, glucose, creatinine and uric acid contents were not significantly influenced by the inclusion of fermented fish waste silage. Serum triglyceride was significantly reduced (P<0.05) in T2 and T3 when compared to that of T1. Birds maintained on T3 registered significantly lower (P<0.05) ready-to-cook yield when compared to T1 fed on control diet. The cost of feed per kg gain of birds in the three dietary treatments was Rs. 20.15, 19.83 and 19.73, respectively. Overall evaluation of the results of the present study revealed that fermented fish waste silage could be used economically as a substitute for unsalted dried fish in the ration of broilers on protein basis, without any adverse effect on growth rate and feed conversion efficiency, while, the ready-to-cook yield tended to be lower in birds receiving diets with 100 per cent fermented fish silage.Item Effect of supplementation of dried yeast (Nutramix - Mdy) on growth performance of pre- ruminant calves(Department of Animal Nutrition, College of Veterinary and Animal Sciences, Mannuthy, 2002) Asitha, T V; Mercy, A DAn experiment was conducted to study the effect of dietary supplementation of dried yeast (''Neutramix-MDY'') on growth performance of pre-ruminant calves. Twelve calves of one week to one month of age were distributed into two groups of six calves each, as uniformly as possible with regard to age, sex and body weight, with one group receiving the control diet (calf starter, grass and milk) and the other group receiving dried yeast ("Neutramix-MDY") @ 20g/day along with the control diet. The final body weight (kg) and average daily gain (g/day) were 72.5 and 247 for control group and 76.2 and 284 for treatment group during the trial period. Though there was no statistically significant difference between the control and the treatment group, there was a numerical increase in both the parameters in treatment animals. The average feed to gain ratio was 4.94 and 4.60 for the control and treatment group respectively. There was no improvement in dry matter, crude protein, acid detergent fibre and neutral detergent fibre digestibilities in yeast fed group over the control. Haematological parameters such as blood glucose, plasma protein, calcium and phosphorus were unaffected by the dietary treatment. The above results indicate that supplementation of yeast culture to the diets of pre- ruminant calves had no statistically significant effect on animal performance.