Effects of Hatching Supplement (Hydrated Nutritional Supplement) with Symbiotic Usage on Performance, Nutrient Digestibility, Immune System and Slaughter Traits in Broiler Production
Abstract
Objective: In this study, it was investigated the effects of hatching supplement (hydrated nutritional supplement) with symbiotic (HSS) application in the first 24 or 48 h periods of hatched broiler chicks on performance, slaughter traits, nutrient digestibility and immune system.
Materials and Methods: A total of 64 day old male and female broiler chicks (Ross 308) were used. The chicks were randomly divided into 4 treatment groups (8 males+8 females/group). These are as follows; Group 1: chicks were not given diet and drinking water for the first 24 hours, Group 2: chicks were fed only HSS for the first 24 hours, Group 3: chicks were not given diet and drinking water for the first 48 hours and Group 4: chicks were fed only HSS for the first 48 hours.
Results: HSS application did not affect slaughter body weight, feed intake and feed conversation ratio. As the fasting time was prolonged, abdominal fat quantitiy and relative weight decreased, but HSS administration did not affect these traits. In the groups (2 and 4) used HSS for the first 24 and 48 hours, the relative weights of gizzard and proventriculus increased, respectively. Group 1 without HSS for the first 24 hours had better organic matter and crude protein retention than other experimental groups. Serum IgA levels significantly increased in groups (1 and 2) whithout and with HSS for the first 24 hours. Serum IgM levels significantly rised in Grups 3 fed HSS in the first 48 hours.
Conclusion: HSS application positively affected the develeopments of proventriculus and gizzard.
Keywords
Broiler , hatching supplement , symbiotic, performance , slaughter traits , immune system
Kaynakça
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