Evaluation of Nutrient Value and Comparison of Rumen Degradation Rate between Spring-Grown Peanut Vine and Summer-Grown Peanut Vine

CAI Amin, XUE Xiao, ZHAO Jiahao, LIAN Hongxia, FU Tong, GAO Tengyun

doi:10.3969/j.issn.1006-267x.2019.04.041

2019 , Vol. 31 >Issue 4: 1823 - 1832

DOI: https://doi.org/10.3969/j.issn.1006-267x.2019.04.041

Molecular Nutrition

Evaluation of Nutrient Value and Comparison of Rumen Degradation Rate between Spring-Grown Peanut Vine and Summer-Grown Peanut Vine

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College of Animal Science and Veterinary Medicine, Henan Agricultural University, Zhengzhou 450046, China

Received date: 2018-09-26

Online published: 2019-04-16

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Abstract

This experiment was conducted to study the routine nutrient composition of spring-grown peanut vine and summer-grown peanut vine, and to evaluate the nutrient values and their degradation characteristics difference in rumen of cows using Cornell net carbohydrate and protein system (CNCPS). Sixteen spring-grown peanut vine and twenty-eight summer-grown peanut vine were collected from Henan province, and the contents of dry matter (DM), crude protein (CP), neutral detergent fiber (NDF), acid detergent fiber (ADF), ether extract (EE), calcium (Ca), phosphorus (P), crude ash (Ash), acid detergent lignin (ADL), starch, NDF insoluble protein (NDFIP), ADF insoluble protein (ADFIP), non-protein nitrogen (NPN) and soluble protein (SCP) and gross energy (GE) were determined. Three Chinese dry Holstein dairy cows fitted with permanent rumen cannula were selected to feed the same total mixed ration (TMR), the degradation rates of DM, CP, NDF and ADF of peanut vine in 72 h in rumen were determined by the nylon bag technique, and their degradation parameters and effective degradation rate were figured out, the carbohydrate and protein components were calculated using CNCPS, and evaluated the nutrient values of peanut vine. The results showed as follows:1) the contents of CP, Ash, Ca and SCP in spring-grown peanut vine were significantly higher than those of summer-grown peanut vine (P<0.01), the contents of NDF, ADF, ADL and GE were significantly lower than those of summer-grown peanut vine (P<0.01), and the P content was significantly lower than that of summer-grown peanut vine (P<0.05). 2) The effective degradation rates of DM, CP, NDF and ADF of spring-grown peanut vine were significantly higher than those of summer-grown peanut vine (P<0.05). 3) The contents of rapid degradation true protein (PB1), medium degradation true protein (PB2), rapid degradation carbohydrate (CA) and non-structural carbohydrate (NSC) in spring-grown peanut vine were significantly higher than those in summer-grown peanut vine (P<0.01), the contents of NPN (PA), carbohydrate and medium degradation carbohydrate (CB2) was significantly lower than those in summer-grown peanut vine (P<0.05), and the contents of non-degradation true protein (PC) and non-degradation carbohydrate (CC) were significantly lower than those in summer-grown peanut vine (P<0.01). Thus, the nutrient values of spring-grown peanut vine is superior to that of summer-grown peanut vine, and the rumen degradation rates are higher than that of summer-grown peanut vine, which has relatively high utilization rate in rumen and the feeding value is higher.

Key words： dairy cows; spring-grown peanut vine; summer-grown peanut vine; nutrient composition; rumen degradation rate; CNCPS

Cite this article

CAI Amin, XUE Xiao, ZHAO Jiahao, LIAN Hongxia, FU Tong, GAO Tengyun . Evaluation of Nutrient Value and Comparison of Rumen Degradation Rate between Spring-Grown Peanut Vine and Summer-Grown Peanut Vine[J]. Chinese Journal of Animal Nutrition, 2019 , 31(4) : 1823 -1832 . DOI: 10.3969/j.issn.1006-267x.2019.04.041

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