›› 2009, Vol. 36 ›› Issue (7): 56-59.

• 生理生化 • Previous Articles     Next Articles

Study on the Relationship between 15 Kinds of Serum Biochemical and Body Weight Change of Warm Season Grazing Lambs

CHENG Fa-xiang1, JIA Shuai-bing1, ZHANG Hao3, TUO Na3, 
YAN Xue-hui2, SHAO Wei1, YU Xiong1   

  1. (1.Laboratory of Animal Nutrition, College of Animal Science, Xinjiang Agricultural University, Urumqi 830052, China; 2.College of Grassland and Environment Science, Xinjiang Agricultural University, Urumqi 830052, China; 3.Department of Animal Science, Yili Vocational and Technical College, Yining 835000, China)
  • Received:1900-01-01 Revised:1900-01-01 Online:2009-07-20 Published:2009-07-20
  • Contact: YU Xiong

Abstract: In the north bank of Turks river the YiLi natural grassland field select 20 4-month-old Kazakh lambs with the similar weight (24.71 kg±2.07 kg),from 2008 May 15 to September 20 to test grazing lamb growth, feed intake determination, serum biochemical and hormonal. The results showed that :4 to 8-month-old lambs with average daily weight gain: (175±34) g, (92±36) g, (158±46) g, (81±36) g, lamb daily weight gain has two peaks: 4 to 5 months old and 6 to 7 months old, which were significantly higher than both 5～6 month old lambs and 7to 8 month old lambs (P<0.05), the changes in serum biochemical markers: there is no significant difference about ALP, LDH, GOT content between months (P>0.05); TP content 5 to 7 months higher than 4 to 8 months, and significantly higher than 6 months old lamb (P<0.05); ALB levels of 6,7,8 months old twere significantly higher than 4,5 months old lamb (P<0.05); GLB content of 5,7 months old lamb are higher than 4,6,8 month old lamb, 7-months-old lamb was significantly higher than 6 months old lamb (P<0.05); A/G, 4,6 month old lamb was higher than 5,8 months old lamb, and which was also significantly higher than the 7-month-old lamb (P<0.05);BUN content, there was no significant difference among 4,5,7,8 months old lamb (P>0.05), but every of them was significantly higher than 6 months old lamb (P<0.05); GLU content, 5,7 months old lamb were significantly higher than 4,6,8 months old lamb (P<0.05); TC, GPT, LDL-C, HDL-C content,4 to 8-month-old lamb gradually increased (HDL-C 5-month-old lamb decreased slightly), TC, GPT content difference between adjacent months was not significant (P>0.05), LDL-C, HDL-C content of 7 to 8 months old lamb were significantly higher than 4,5,6 months old lamb (P<0.05); TG content, the whole period with downward trend, only the adjacent inter—month—old lamb 7 months old lamb were significantly higher than the 8-month-old lamb (P<0.05); FFA content, 8-month-old lamb was significantly higher than the remaining months old lamb (P<0.05), 6-month-old lamb was higher than the 4-month-old lamb, and which was significantly higher than 5, 7-month-old lamb (P<0.01).

Key words: grazing lambs; growth performance; serum biochemical indicators

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