China Animal Husbandry and Veterinary Medicine ›› 2022, Vol. 49 ›› Issue (6): 2156-2164.doi: 10.16431/j.cnki.1671-7236.2022.06.016

• Nutrition and Feed • Previous Articles     Next Articles

Comparison of Colostrum Physicochemical Characterization Between Dulong Cattle and Yunling Cattle

HE Zhanxing1, HUANG Meifen1, CHENG Yumei2, ZHANG Quanpeng2, ZHANG Jicai1, YANG Kai1, WANG Ankui1, ZHOU Yaping2, HUANG Bizhi1   

  1. 1. Yunnan Academy of Grasslands and Animal Science, Kunming 650212, China;
    2. Kunming Dairy Production Performance Test Center, Kunming 650041, China
  • Received:2021-10-20 Online:2022-06-05 Published:2022-05-27

Abstract: 【Objective】 The composition of colostrum of Dulong cattle (Bos frontalis) and Yunling cattle were determined to obtain the difference of colostrum composition between these two breeds.【Method】 45 colostrum samples of Dulong cattle and Yunling cattle (under the same condition of age, parity and feeding management) were collected to determinate milk protein, milk fat, lactose, total solids (TS), non-fat solids (SNF), milk urea nitrogen (MUN), somatic cell counts (SCC) and freezing point (FP) on the first day after delivery.The independent t-test was subsequently utilized to compare the colostrum composition between Dulong cattle and Yunling cattle on the first day after postpartum.【Result】 The contents of protein, fat, TS and SNF in colostrun of Dulong cattle were 16.77%, 4.70%, 27.82% and 22.39%, which were 28.11% (P<0.01), 5.38% (P>0.05), 22.45% (P<0.01) and 26.93% (P<0.01) higher than those of Yunling cattle, respectively.The contents of lactose and MUN and SCC were 2.98%, 354.2 mg/L and 35.73×104/mL, respectively, which were 10.38% (P<0.05), 39.63% (P<0.01) and 78.06% (P<0.01), respectively, lower than those of Yunling cattle.FP of Dulong cattle was -0.5337 ℃, which was 0.1383 ℃ (P<0.01) higher than that of Yunling cattle.Milk fat-protein ratio (FPR) was 0.266, which was 0.131 lower than that of Yunling cattle (P>0.05).【Conclusion】 The colostrum compositions of the two breeds were significantly different on the first day after postpartum, and the colostrum of Dulong cattle had notably higher nutritional value.

Key words: Dulong cattle; Yunling cattle; colostrum; physicochemical characterization

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