Effects of Dietary Protein Levels on Growth Performance, Carcass Traits, Serum Metabolites, and Meat Composition of Tibetan Sheep During the Cold Season on the Qinghai-Tibetan Plateau

Overview

Journal Animals (Basel)

Date 2020 May 10

PMID 32384655

Citations 16

Authors

Xungang Wang

Tianwei Xu

Xiaoling Zhang

Yuanyue Geng

Shengping Kang

Shixiao Xu

Affiliations

Soon will be listed here.

Abstract

Dietary protein is a critical nutrient that directly influences the health and production of livestock. Recent studies showed that protein supplements could enhance the growth performance of Tibetan sheep. However, there is a lack of information regarding the influence of dietary protein levels on carcass traits and meat composition. This study investigated the effects of dietary protein levels on growth performance, carcass traits, serum metabolites, and meat composition in Tibetan sheep during the cold season on the Qinghai-Tibetan Plateau. A total of eighteen 1-year-old, healthy, castrated Tibetan sheep with similar initial body weights (31.7 ± 0.72 kg) were randomly divided into three treatment groups with different dietary protein level (low protein (LP, 10.1%); medium protein (MP, 12.1%); high protein (HP, 14.1%)) diets. The results indicated that the Tibetan sheep fed with the MP and HP diets had greater final body weights (BWs), average daily gains (ADGs), and average daily feed intakes (ADFIs) ( < 0.05). The MP and HP diets also improved the hot carcass weight, net meat (including the fat) weight, and bone weight of the sheep significantly ( < 0.05). Besides, the dietary protein levels could significantly affect the serum concentrations of growth hormone ( < 0.05). The diameter of muscle fibers in the MP group was significantly greater than that in the LP group ( < 0.05), while the density of muscle fibers showed the opposite trend. The dietary protein levels only significantly ( < 0.05) influenced the ether extract content and profile content of the longissimus dorsi muscle but had no effect on other parameters of meat composition. In summary, our results indicate that dietary protein levels affect growth performance, carcass traits, and meat composition and that diets containing 12.1% and 14.1% protein are recommended to obtain better production performance and meat products in Tibetan sheep, rather than a diet containing 10.1% protein, during the cold season on the Qinghai-Tibetan Plateau.

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References

Li J, Zhu W, Luo M, Ren H, Tang L, Liao H . Molecular cloning, expression and purification of lactoferrin from Tibetan sheep mammary gland using a yeast expression system. Protein Expr Purif. 2015; 109:35-9. DOI: 10.1016/j.pep.2015.01.008. View

Gomez R, Lewis A, Miller P, Chen H, Diedrichsen R . Body composition and tissue accretion rates of barrows fed corn-soybean meal diets or low-protein, amino acid-supplemented diets at different feeding levels. J Anim Sci. 2002; 80(3):654-62. DOI: 10.2527/2002.803654x. View

Wang W, Chen D, Yu B, Huang Z, Luo Y, Zheng P . Effect of Dietary Inulin Supplementation on Growth Performance, Carcass Traits, and Meat Quality in Growing-Finishing Pigs. Animals (Basel). 2019; 9(10). PMC: 6826911. DOI: 10.3390/ani9100840. View

Jing X, Peng Q, Hu R, Zou H, Wang H, Yu X . Dietary supplements during the cold season increase rumen microbial abundance and improve rumen epithelium development in Tibetan sheep. J Anim Sci. 2018; 96(1):293-305. PMC: 6140854. DOI: 10.1093/jas/skx032. View

Xu T, Xu S, Hu L, Zhao N, Liu Z, Ma L . Effect of Dietary Types on Feed Intakes, Growth Performance and Economic Benefit in Tibetan sheep and Yaks on the Qinghai-Tibet Plateau during Cold Season. PLoS One. 2017; 12(1):e0169187. PMC: 5215856. DOI: 10.1371/journal.pone.0169187. View

Picard B, Lefaucheur L, Berri C, Duclos M . Muscle fibre ontogenesis in farm animal species. Reprod Nutr Dev. 2003; 42(5):415-31. DOI: 10.1051/rnd:2002035. View

Siqin Q, Nishiumi T, Yamada T, Wang S, Liu W, Wu R . Relationships among muscle fiber type composition, fiber diameter and MRF gene expression in different skeletal muscles of naturally grazing Wuzhumuqin sheep during postnatal development. Anim Sci J. 2017; 88(12):2033-2043. PMC: 5763406. DOI: 10.1111/asj.12848. View

Xue B, Zhao X, Zhang Y . Seasonal changes in weight and body composition of yak grazing on alpine-meadow grassland in the Qinghai-Tibetan plateau of China. J Anim Sci. 2005; 83(8):1908-13. DOI: 10.2527/2005.8381908x. View

Hornick J, Van Eenaeme C, Gerard O, Dufrasne I, Istasse L . Mechanisms of reduced and compensatory growth. Domest Anim Endocrinol. 2000; 19(2):121-32. DOI: 10.1016/s0739-7240(00)00072-2. View

10.

Yin H, Gilbert E, Chen S, Wang Y, Zhang Z, Zhao X . Effect of hybridization on carcass traits and meat quality of erlang mountainous chickens. Asian-Australas J Anim Sci. 2014; 26(10):1504-10. PMC: 4093072. DOI: 10.5713/ajas.2013.13097. View

11.

Jing X, Peng Q, Hu R, Wang H, Yu X, Degen A . Effect of supplements during the cold season on the reproductive system in prepubertal Tibetan sheep ewes. Anim Sci J. 2017; 88(9):1269-1278. DOI: 10.1111/asj.12762. View

12.

Huang J, Li Y, Luo Y . Bacterial community in the rumen of Tibetan sheep and Gansu alpine fine-wool sheep grazing on the Qinghai-Tibetan Plateau, China. J Gen Appl Microbiol. 2017; 63(2):122-130. DOI: 10.2323/jgam.2016.08.003. View

13.

Zhang J, Shi H, Wang Y, Li S, Zhang H, Cao Z . Effects of limit-feeding diets with different forage-to-concentrate ratios on nutrient intake, rumination, ruminal fermentation, digestibility, blood parameters and growth in Holstein heifers. Anim Sci J. 2017; 89(3):527-536. DOI: 10.1111/asj.12959. View

14.

Abribat T, DesLauriers N, BRAZEAU P, Gaudreau P . Alterations of pituitary growth hormone-releasing factor binding sites in aging rats. Endocrinology. 1991; 128(1):633-5. DOI: 10.1210/endo-128-1-633. View

15.

Luo J, Zeng D, Cheng L, Mao X, Yu J, Yu B . Dietary β-glucan supplementation improves growth performance, carcass traits and meat quality of finishing pigs. Anim Nutr. 2020; 5(4):380-385. PMC: 6920398. DOI: 10.1016/j.aninu.2019.06.006. View

16.

Cortese M, Segato S, Andrighetto I, Ughelini N, Chinello M, Schiavon E . The Effects of Decreasing Dietary Crude Protein on the Growth Performance, Feed Efficiency and Meat Quality of Finishing Charolais Bulls. Animals (Basel). 2019; 9(11). PMC: 6912554. DOI: 10.3390/ani9110906. View

17.

Zhang H, Wang Z, Peng Q, Tan C, Zou H . Effects of different levels of protein supplementary diet on gene expressions related to intramuscular deposition in early-weaned yaks. Anim Sci J. 2014; 85(4):411-9. DOI: 10.1111/asj.12161. View

18.

Jiao Y, Liu Y, Quek S . Systematic evaluation of nutritional and safety characteristics of Hengshan goat leg meat affected by multiple thermal processing methods. J Food Sci. 2020; 85(4):1344-1352. DOI: 10.1111/1750-3841.15087. View

19.

Qin X, Zhang T, Cao Y, Deng B, Zhang J, Zhao J . Effects of dietary sea buckthorn pomace supplementation on skeletal muscle mass and meat quality in lambs. Meat Sci. 2020; 166:108141. DOI: 10.1016/j.meatsci.2020.108141. View

20.

Wang H, Li H, Wu F, Qiu X, Yu Z, Niu W . Effects of Dietary Energy on Growth Performance, Rumen Fermentation and Bacterial Community, and Meat Quality of Holstein-Friesians Bulls Slaughtered at Different Ages. Animals (Basel). 2019; 9(12). PMC: 6941049. DOI: 10.3390/ani9121123. View