ACTA VETERINARIA ET ZOOTECHNICA SINICA ›› 2017, Vol. 48 ›› Issue (3): 483-491.doi: 10.11843/j.issn.0366-6964.2017.03.011

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A Substitution Effect of Green Sweet Sorghum Stalks for Diet on the Growth Performance, Carcass Yields and Meat Quality in Geese

HUANGYong1# , MA Jiao-li2# , WANG Qi-gui1, DONG Guo-zhong2, XIEMing3, HOU Shui-sheng3, LIU Zuo-lan1, WANG Chao1*   

  1. (1.Chongqing Academy of Animal Sciences, Rongchang 402460, China; 2.Chongqing Key Laboratory of Forage and Herbivores, College of Animal Science and Technology, Southwest University, Chongqing 400716, China; 3.Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing 100193, China)
  • Received:2016-06-08 Online:2017-03-23 Published:2017-03-22

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Abstract:

This experiment was conducted to study the substitution effect of green sweet sorghum stalks for diet on the growth performance, carcass yields and meat quality in geese, and explore the feeding technology using green sweet sorghum stalks substituting diet. Three hundred and sixty 28-day-old Sichuan White geese (male and female in half) with an initial average body weight of (1.11±0.008) kg were randomly allocated into 6 treatments (control group, experimental group I-V) containing 6 replicates with 10 birds per pen. The birds in control group was provided the basal diet ad libitum without the green sweet sorghum stalks; the birds in group I-V were fed 96%, 92%, 88%, 84% and 80% of basal diet fed in control group, respectively, and green sweet sorghum stalks were provided ad libitum. The experiment lasted until 70 days of age. The results showed that: 1) The final body weight and average daily gain in control group was not significantly different from those in group I and II (P>0.05), the average daily gain in control group and group I were higher than those in group III, IV and V (P<0.05). 2) No significant difference was observed in dressing percentage, breast muscle percentage and leg muscle percentage among the 6 treatment groups (P>0.05); compared with control group, abdominal fat percentage in group I-V and skin subcutaneous fat percentage in group I, IV and V were significantly decreased (P<0.05), the gizzard index in group I-V was significantly higher than that in control group (P<0.05). 3) No significant difference was observed in the content of crude protein, intramuscular fat and inosine monophosphate in breast muscle among the 6 treatment groups (P>0.05); the content of total amino acids, essential amino acids, delicious amino acids, saturated fatty acids and unsaturated fatty acids in the breast muscle in group I-III were not different from those in control group (P>0.05). Collectively, it seems to be feasible to replace partial diet with green sweet sorghum stalks for geese, and 4％-8% of diet can be replaced with green sweet sorghum stalks without negative effects on growth performance, carcass yields and meat quality in Sichuan White geese from 28 to 70 days of age.

Key words: green sweet sorghum stalks, Sichuan White geese, growth performance, carcass yields, meat quality

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