China Animal Husbandry and Veterinary Medicine ›› 2022, Vol. 49 ›› Issue (4): 1332-1342.doi: 10.16431/j.cnki.1671-7236.2022.04.015

• Nutrition and Feed • Previous Articles     Next Articles

Study on the Differences of Blood Indexes and Slaughter Performance Between 6-month-old Boer Goats and Macheng Black Goats

YANG Juan1, GUO Shuai1,2, HAN Shichang1,3, ZHANG Nian1, ZHANG Feng1, TAO Hu1, XIONG Qi1   

  1. 1. Key Laboratory of Animal Embryo Engineering and Molecular Breeding of Hubei Province, Institute of Animal Husbandry and Veterinary Medicine, Hubei Academy of Agricultural Sciences, Wuhan 430064, China;
    2. School of Animal Science, Yangtze University, Jingzhou 434025, China;
    3. Key Laboratory of Agricultural Animal Genetics, Breeding and Reproduction of Ministry of Education, College of Animal Science and Technology, Huazhong Agricultural University, Wuhan 430070, China
  • Received:2021-09-30 Online:2022-04-05 Published:2022-03-25

Abstract: 【Objective】 The differences of blood physiological and biochemical indexes,carcass traits,muscle fiber diameter and intramuscular fat content were researched between Boer goats and Macheng Black goats at the age of 6 months,so as to provide basis and reference for the feeding management,introduction improvement and cross utilization of the two breeds of goats.【Method】 8 healthy Boer goats and Macheng Black goats aged 3 months±5 days were bred under uniform conditions for 3 months.After feeding,blood was collected to detect 14 blood physiological indexes including white blood cell count (WBC),red blood cell count (RBC),hemoglobin concentration (HGB),hematocrit (HCT),average red blood cell volume (MCV) and so on,14 blood biochemical indexes including creatinine (CRE),total bilirubin (TBIL),urea nitrogen (BUN),blood glucose (GLU),total protein (TP) and so on,and 12 carcass traits including body weight,body height,body oblique length,carcass weight,slaughter rate,eye muscle area and so on.After slaughtered,the longissimus dorsi muscle tissue was taken and sliced,the muscle fiber diameter and intramuscular fat content were detected by hematoxylin and eosin staining and modified oil red O staining.【Result】 Among the blood physiological indexes,the hematocrit and average erythrocyte volume of Boer goats were significantly lower than those of Macheng Black goats (P<0.05),and the average erythrocyte hemoglobin concentration was significantly higher than that of Macheng Black goats (P<0.05).In blood biochemical indexes,the contents of total protein,globulin,blood phosphorus and amylase activity of Boer goats were extremely significantly lower than those of Macheng Black goats (P<0.01),and the content of potassium ion was significantly higher than that of Macheng Black goats (P<0.01).In carcass traits,the body weight,average daily gain,longissimus dorsi muscle weight,biceps femoris muscle weight and carcass weight of Boer goats were significantly higher than those of Macheng Black goats (P<0.05),the eye muscle area was extremely significantly larger than that of Macheng Black goats (P<0.01),and there was no significant difference in other indexes (P>0.05).The muscle fiber diameter of Boer goats was extremely significantly larger than that of Macheng Black goats (P<0.01),the content of intramuscular fat was significantly higher than that of Macheng Black goats (P<0.05).【Conclusion】 There were great differences in blood indexes and slaughter performance of Boer goats and Macheng Black goats.The results could provide a theoretical basis for the germplasm characteristics of Boer goat and Macheng Black goat.

Key words: Boer goats; Macheng Black goats; physiological and biochemical indexes; carcass traits; muscle fiber; intramuscular fat

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