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Effects of alfalfa pellet feed on slaughter performance,organ weights and blood biochemical indices of geese

ZHAN Jin-Shun;ZHAN Kang;LIU Ming-Mei;HUO Yong-Jiu;LIN Miao;ZHAO Guo-Qi;YANG Fu-Yu;College of Animal Science and Technology,Yangzhou University;Jiangsu Joint Institute of Technology of Profession of Huai'an Bio-engineering Branch;College of Animal Science and Technology,China Agricultural University;  
To investigate effects of alfalfa pellet feed on slaughter performance,organs and blood biochemical indices of geese,300 healthy Yangzhou geese at 21 dwere chosen and randomly divided into 5groups(control group and trial groupsⅠtoⅣ)with 3replicates in each group and 20 geese per replicate.The trial period lasted for 7weeks.The diets of different groups were supplemented with 0(control group),8%(group Ⅰ),12%(group Ⅱ),16%(group Ⅲ)and 20%(group Ⅳ)alfalfa meal in the first 3 weeks,and 0(control group),12%(groupⅠ),16%(groupⅡ),20%(group Ⅲ)and 24%(group Ⅳ)in the last 4weeks,respectively.Key results were:1)the live weight,semi-eviscerated weight,eviscerated weight,muscle weight,breast muscle weight and tibia weight of geese in group Ⅲ were significantly higher than those in the control group at 42 and 70days;2)the thymus weight of geese in group Ⅱ and the liver weight of geese in group Ⅲwere significantly higher than those in the control group(P0.05)at 42 and 70days;3)at 42 days,the levels of TG,TC and LDL of serum in all trial groups except groupⅡ were significantly lower than those in the control group(P0.05).In contrast,the control group had significantly higher serum HDL levels than the trial groups.At the 70 days,the levels of TC and HDL of serum in all experimental groups except group Ⅱ were significantly higher than those in control group(P0.05)but TG levels did not differ between groups.In conclusion,this study indicates that alfalfa pellet diet supplementation can improve slaughter performance,organ development and blood biochemical indices of Yanzhou geese.The optimum levels of alfalfa meal in diet for geese were 16% and 20% at 21 to 42days and 43 to 70days,respectively.
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