China Animal Husbandry and Veterinary Medicine ›› 2023, Vol. 50 ›› Issue (10): 3985-3993.doi: 10.16431/j.cnki.1671-7236.2023.10.012

• Nutrition and Feed • Previous Articles     Next Articles

Effects of Dietary Pleurotus ostreatus Substrate Supplementation on Growth Performance and Nutrient Apparent Digestibility of Fattening Hu Sheep

YUAN Guohong1, HU Lihong1, LI Changchang1, ZHANG Lidong1, DUAN Pingping1, LU Mulong1, LIU Hongyun2, HU Lei3, XU Guishan1,4   

  1. 1. College of Animal Science and Technology, Tarim University, Alar 843300, China;
    2. College of Animal Science, Zhejiang University, Hangzhou 310058, China;
    3. Tumushuke Anxin Animal Husbandry Co., Ltd., Tumushuke 843900, China;
    4. Key Laboratory of Animal Grass Resources Utilization Around Tarim, Ministry of Agriculture and Rural Affairs, Alar 843300, China
  • Received:2023-03-13 Online:2023-10-05 Published:2023-09-26

Abstract: 【Objective】 This experiment was conducted to investigate the effects of different levels of spent mushroom substrate of Pleurotus ostreatus (P.SMS) on the growth performance, nutrient apparent digestibility, slaughter performance and organ indexes of Hu sheep in mixed diet, so as to provide practical reference for feed utilization of P.SMS. 【Method】 Forty-five 3-month-old male Hu lambs with similar weight were randomly divided into 5 groups with 9 lambs(3 replicates) in each group and 3 lambs in each replicate. The lambs in group Ⅰ (control group) was fed a total mixed diet without P.SMS, and the lambs in groups Ⅱ, Ⅲ, Ⅳ and Ⅴ were fed 5%, 10%, 15% and 20% P.SMS replaced with whole plant corn silage in the diet, respectively. The growth performance, nutrient apparent digestibility, slaughter performance and organ indexes of Hu lambs were measured through feeding and slaughter experiments. 【Result】 On the 30th day, the body weight of lambs in groups Ⅲ, Ⅳ and Ⅴ were significantly higher than that in group Ⅱ (P<0.05). At 1-30 days of old, the average daily gain of lambs in group Ⅴ was significantly higher than that in groups Ⅰ and Ⅱ, and groups Ⅲ and Ⅳ were significantly higher than group Ⅱ (P<0.05). At 60-90 days of old, the average daily gain of lambs in groups Ⅰ, Ⅱ and Ⅲ were significantly higher than that in group Ⅴ (P<0.05), and group Ⅲ was significantly higher than groups Ⅳ and Ⅴ (P<0.05). The feed-to-gain ratio (F/G) of lambs in group Ⅱ at 1-30 days of old was significantly higher than that in group Ⅴ (P<0.05), lambs in groups Ⅳ and Ⅴ at 60-90 days of old were significantly higher than that in other groups (P<0.05), and lambs in group Ⅴ at 1-90 days of old was significantly higher than that in group Ⅰ (P<0.05). The apparent digestibility of dry matter of lambs in group Ⅲ was significantly higher than that in group Ⅱ (P<0.05). The apparent digestibility of organic matter and crude protein of lambs in groups Ⅰ and Ⅲ were significantly higher than that in group Ⅱ (P<0.05). The slaughter rate of lambs in groups Ⅲ and Ⅳ were significantly higher than that in group Ⅰ (P<0.05). The spleen weight of lambs in group Ⅲ was significantly higher than that in groups Ⅱ and Ⅴ (P<0.05). The liver index of lambs in group Ⅴ was significantly lower than that in other groups (P<0.05), the lung index of lambs in group Ⅳ was significantly higher than that in other groups (P<0.05). 【Conclusion】 Comprehensive analysis showed that it was feasible to feed fattening Hu sheep with 10% P.SMS instead of whole plant corn silage. The addition of high proportion (20%) P.SMS had better feeding effect in the first two months of fattening period, but with the extension of feeding time, the feeding effect would become worse. It was recommended that the feeding time should not exceed two months.

Key words: Pleurotus ostreatus substrate; growth performance; slaughter performance; organ index; apparent digestibility

CLC Number: