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Influence of Feed Restriction and Supplementation of Grower’s Diet with Enzyme or Probiotic on the Performance of Broiler Breeders and Their Progeny

KrishiKosh

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Title Influence of Feed Restriction and Supplementation of Grower’s Diet with Enzyme or Probiotic on the Performance of Broiler Breeders and Their Progeny
 
Creator Satisha, K.G.
 
Contributor Narasimha Murthy, H. N.
 
Subject planting, diseases, sowing, developmental stages, crossing over, groundnuts, yields, genetics, genotypes, biological phenomena
 
Description A study was undertaken to evaluate effect of feed restriction and supplementation of enzyme or probiotic in the grower's diets on the performance of broiler breeders. Ninehundred sixty day old PB1 sexed chicks were wing banded, reared under standard practices. Based on body weight at 5 weeks, 576 birds with uniform body weight were selected, randomly allocated to sixteen dietary treatments. Basal diet was formulated as per BIS (1997). The control (T1) and feed restrictions advocated at 20 (T2), 25 (T3) and 30 (T4) percent of the recommended quantity of feed for given body weight (Cobb broiler breeder guide). These diets were supplemented with a multi enzyme (T5, T6, T7and T8) ,probiotic(T9, T10, T11 and T12) and their combination ( T13,T14,T15 and T16) so as formulate 16 treatments. These diets were fed in the growing phase (6-20 weeks of age). At 20 and 25 percent feed restriction with combination of enzyme and probiotic (T14 and T15) showed significantly (P≤0.05) higher body weights compared to all other groups except T1, T5, T9, T13 and T16. The control group supplemented with probiotic showed higher HI titer compared to T3, T4, T8 andT16 groups. The total leucocytes count and heterophil: lymphocyte ratio was significantly (P≤0.05) lower in birds fed diet T14 and T15. The control group showed significantly (P≤0.05) lower serum cholesterol compared to T4, T8, T12 and T15. The birds fed control and control supplemented diets matured earlier. The egg production at 32 and 42 weeks of age was significantly higher in T13 compared to T2, T10, T11, T14, T15 and T16 groups. The egg quality traits and settable egg production were not affected by treatments. The fertility was significantly higher in T15 compared to T3 fed group but hatchability on TES and FES were not affected. The body weights of progenies were unaffected by any of the treatments. Feed conversion ratio was significantly higher in T8 compared to T5, T9, T13 and T15 groups. Higher dressing percentage was recorded in T10. In conclusion, feed restriction at 20, 25 and 30 percent although increased sexual maturity but no adverse effect on egg production, hatchability and progeny performance.
 
Date 2016-06-23T10:48:50Z
2016-06-23T10:48:50Z
2012-05-10
 
Type Thesis
 
Identifier http://krishikosh.egranth.ac.in/handle/1/67817
 
Language en
 
Format application/pdf
 
Publisher Karnataka Veterinary, Animal and Fisheries Sciences University, Bidar