Effect of β-Mannanase and Soybean Hulls on the Nutrient Digestibility, Digesta Viscosity, Feces Consistency and Intestinal Histomorphology During Early Peak Production Period in Laying Hens
Effect of β-Mannanase and Soybean Hulls on the Nutrient Digestibility, Digesta Viscosity, Feces Consistency and Intestinal Histomorphology During Early Peak Production Period in Laying Hens
Muhammad Shuaib1*, Abdul Hafeez1, Sarzamin khan1, Muhammad Shahkar Uzair1, Abubakar Sufyan2 and Muhammad Ayaz3
ABSTRACT
This study was designed to determine the combined effect of fiber degrading enzymes (β-Mannanase) and soybean hulls on the egg quality parameters in the laying hens during the early (29 to 32 weeks) peak production period. Two hundred golden brown (RIR×Fayoumi) layer birds of age 28 weeks were used for the experimental purpose and were assigned into five groups CON, T1, T2, T3, and T4. Each group contained 4 replicates with 10 birds per replicate. The CON group had a corn-soybean basal diet while the T1 group had 3%SH+20mg/kg enzyme, T2 3%SH+30mg/kg enzyme, T3 9%SH+20mg/kg enzyme, and T4 group 9%SH+30mg/kg enzyme in the feed. The result showed significantly higher digestibility of crude protein (CP) in the T1 group and crude fat in the T1 and T2 groups while the digestibility of dry matter (DM), crude fiber (CF), and ash were not effected (P>0.05). Digesta viscosity and feces consistency were not effaced (P>0.05) but duodenum, jejunum, and ileum villus width, height, crypt depth, and surface area were recorded higher (P<0.05) in the T2 diet group. It is concluded that the replacement of soybean meal in the diet of laying hens by 3%SH in combination with enzyme (β-Mannanase) at the level of 20 and 30mg/kg feed has a positive effect on the nutrient digestibility, digesta viscosity, feces consistency and intestinal histomorphology during early peak egg production period in the laying hens.
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