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1998 - 19992
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Subject: Poultry Science × End date: 1999 × Start date: 1998 ×
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    ThesisItemOpen Access
    EFFICACY OF CERTAIN LITTER MATERIALS ON BROILER PERFORMANCE
    (COLLEGE OF VETERINARY AND ANIMAL SCIENCES Mannuthy - Thrissur, 1999) SINI THOMAS; Amritha Viswanath, Amritha Viswanath; SINI THOMAS
    An experiment was designed and conducted at the Department of Poultry Science, College of Veterinary and Animal Sciences, Mannuthy to evaluate the efficacy oi different litter materials on the performance of broilexs under hot-humid conditions of Kerala. Two hundred and ten, one-day old straight-run commerical broiler chicks were reared for a period of eight weeks. The birds were allotted into five different litter treatment groups, viz., wood shavings (TJ which formed the control group, saw dust (T,), rice husk (T,), coir pith (TJ and paddy chaff (T,), each comprising of three replicates with fourteen birds each. Standard broiler starter and finisher rations were formulated as per BIS (1992) specifications for the broilers. The chicks were reared under standard managemental conditions upto eight weeks of age. Results of the study revealed that body weight and body weight gain were not influenced by different litter treatment s throughout the experimental period. Eventhough feed (-otisumption and feed efficiency were influenced by litter mat erials during the initial periods, there cjos tto impact for the rest of the experimental period. Processing yields and ]< sses were not affected by different litter treatments. Litter quality parameters like weight of the litter at the b«;>ginning and end of the experiment, weekly moisture content. fortnightly ammonia-nitrogen content, nitrogen-phosphoruspotassium content, litter pH and proximate composition of the l i tter at the beginning, at sixth week and eighth week were significantly different (P<0.01) between different treatment groups. It was observed that eventhough there was significant difference (P<0.05) between treatment groups for mortality by fourth week of age, no significant difference was obtained for all other periods. Cost-benefit analysis revealed that net [uofit per bird by sixth week and eighth week of age was more for litter materials, viz., saw dust, rice husk, coir pith and paudy chaff than wood shavings. Based on the above findings, it can be concluded that different litter materials, viz., saw dust, rice husk, coir pith and paddy chaff are equally good for broiler raising as wood shavings during the month of January through March in Kerala.
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    ThesisItemOpen Access
    EFFECT OF SODIUM SULPHATE SUPPLEMENTATION IN LAYER DIET
    (COLLEGE OF VETERINARY AND ANIMAL SCIENCES Mannuthy - Thrissur, 1998) VIDHYADHARAN., P.; Amritha Viswanath; VIDHYADHARAN., P.
    An investigation was carried out to evaluate the effect of supplementation of sodium sulphate in White Leghorn layer diets devoid of animal protein sources. White Leghorn "F' strain pullets of 20 weeks of age were wing banded and randomly distributed to five different dietary treatment groups, each with eight replicates of four birds each. The dietary treatment consisted of control ration (TJ prepared using unsalted dried fish as animal protein source, all vegetable protein diet with the addition of 300 g DL-methionine (TJ , all vegetable protein diet with the addition of anhydrous sodium sulphate at the levels of 200 g (Tj) , 300 g (TJ and 400 g (Ts) in every 100 kg of diet. All the rations were formulated as per BIS (1992) specification of nutrients for layer chicken. Soyabean cake, groundnut cake and gingelly oil cake were used as protein sources in vegetable protein diet. Body weight at 20 and 48 weeks of age, age at sexual maturity, egg production, feed intake, feed efficiency, egg weight, livability and cost-benefit analysis were the major criteria considered for the evaluation. The data were recorded for seven, 28 day periods. There was significant difference in body weight at 48 weeks of age (P<0.05) . Body weight of birds fed with standard layer ration (TJ and birds fed with 0.4 per cent sodium sulphate were significantly (P<0.0'^) higher than those birds fed with 0.3 per cent sodium sulphate (TJ supplemented diet. But body weight of birds fed with standard layer ration (Id was comparable with body weight of birds fed with vegetable protein diet having 0.4 per cent sodium sulphate (Td • Similar trend was followed in egg weight also, with significantly higher egg weight in treatment group fed with 0.4 per cent sodium sulphate (Td • Egg weight of birds fed with standard layer ration (Td was comparable with 1 (PcO.Ol). But parameters like age at sexual maturity, hen-day and hen-housed egg production and feed efficiency were not affected by the supplementation of Sodium Sulphate. Feed intake showed significant (P<0.01) difference between dietary treatments. The group fed with 0.3 per cent methionine (Td had significantly lower feed intake in comparison with 0.2 per cent (T3) and 0.3 per cent sodium sulphate (TJ supplemented group. Feed intake of birds fed with control diet (Fd wa;- statistically comparable with all treatment groups except those birds fed with vegetable protein diet with 0.4 per cent sodium sulphate (Td . Mortality pattern showed no difference among the five dietary treatments tested. All vegetable protein ration prepared with the addition of either methionine or sodium sulphate had higher price when compared with standard layer ration. Based on this study it was surmised that sodium sulphate supplementation did not have any deleterious effect on production performance of White Leghorn layers. So methionine or sodium sulphate can be effectively utilized in formulation of all vegetable layer ration when scarcity of fish occurs.