| The immunologic pigeon milk replacers for squabs from 1 to 6 days of age were manufactured and their effects on performance, small intestinal morphology and immunity of squabs were discussed in the experiment.According to single factorial design, 100 healthy America pigeon king squabs (16.65±0.50g BW) at 1 day of age were divided into 5 groups with 10 replicates of 2 squabs including:(1) C1 fed by their parents with pigeon milk, (2) C2 fed by hand with basal pigeon milk replacer, (3)T1 fed by hand with basal pigeon milk replacer supplemented with 3.75% immunoglobulin and 1% probiotics,(4) T2 fed by hand with basal pigeon milk replacer supplemented with 3.75% immunoglobulin, and (5) T3 fed by hand with basal pigeon milk replacer supplemented with 1% probiotics.The results showed as follows:(1) The Immunologic Pigeon Milk Replacer had great improvement on the performance of the squabs.all C2 squabs died for lost weight day by day, and nealy no weight changed in T3 squabs, T2 and T1 squabs got average daily gain of 5.77g and 8.79g,respectively, while C1 squabs grew with average daily gain of 14.5g.The heart and liver weight increased from T3, T2, T1 toC1 and between of the groups got significant difference (P<0.05).Yet, T3 heart and liver index increased compared T2, T1 and C1(P<0.05).C1 and T2 also had greater heart index,yet had lower liver index compared T1.There was no difference in serumal GH level between T1 and T2,but both of them increased Compared that in T3(P<0.05), while decreased compared that in C1(P<0.05).(2) The Immunologic Pigeon Milk Replacer perfected small intestina morpholoy in the squabs significantly.T1 had higher 21.87% villus than T3(P<0.05), yet there was no diference in villus height between the other groups. For the crypt depth ,C1 decreased compared T2 and T3(P<0.05), and T1 also decreased compared T3(P<0.05). VCR value of C1 increased compared(P<0.05) that of T2 and T3, and VCR value of T1 increased(P<0.05) compared that of T3,too. |
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