Preprint Article Version 1 Preserved in Portico This version is not peer-reviewed

Comparative Study of Growth Performance, Blood Biochemistry, Rumen Fermentation, Ruminal and Fecal Bacterial Structure Between Yaks and Cattle Raised Under High Concentrate Feeding Conditions

Version 1 : Received: 8 September 2023 / Approved: 8 September 2023 / Online: 11 September 2023 (09:20:22 CEST)

A peer-reviewed article of this Preprint also exists.

Liu, X.; Yang, Z.; Yang, J.; Wang, D.; Niu, J.; Bai, B.; Sun, W.; Ma, S.; Cheng, Y.; Hao, L. A Comparative Study of Growth Performance, Blood Biochemistry, Rumen Fermentation, and Ruminal and Fecal Bacterial Structure between Yaks and Cattle Raised under High Concentrate Feeding Conditions. Microorganisms 2023, 11, 2399. Liu, X.; Yang, Z.; Yang, J.; Wang, D.; Niu, J.; Bai, B.; Sun, W.; Ma, S.; Cheng, Y.; Hao, L. A Comparative Study of Growth Performance, Blood Biochemistry, Rumen Fermentation, and Ruminal and Fecal Bacterial Structure between Yaks and Cattle Raised under High Concentrate Feeding Conditions. Microorganisms 2023, 11, 2399.

Abstract

This study compared growth performance, serum biochemical indicators, rumen fermentation parameters, rumen bacterial structure, and fecal bacterial structure of cattle and yaks, fed for two months, given a feed containing concentrate to roughage ratio of 7: 3 on dry matter basis. Compared with cattle, yak showed better growth performance. The serum biochemical results showed that the albumin: globulin ratio in yaks serum was significantly higher than that in cattle. Aspartate aminotransferase, indirect bilirubin, creatine kinase, lactate dehydrogenase and total cholesterol were significantly lower in yaks than that in cattle. Rumen pH, acetate to propionate ratio, and acetate were lower in yaks than in cattle while the lactate in yaks was higher than in cattle. There were significant differences in the structure of ruminal as well as fecal bacteria between cattle and yaks. The prediction of rumen bacterial function showed that there was metabolic difference between cattle and yaks. In general, the metabolic pathway of cattle was mainly riched in de novo synthesis of nucleotides, while that of yaks was mainly riched in the metabolic utilization of nutrients. This study provides a basis for understanding the rumen ecology under the condition of high concentrate diet.

Keywords

yaks; cattle; blood metabolism; rumen bacterial; fecal bacterial

Subject

Biology and Life Sciences, Animal Science, Veterinary Science and Zoology

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