墨西哥科利马地区Pelibuey、Katahdin和Blackbelly公羊的头尾形态

IF 0.2 4区 农林科学 Q2 Veterinary Veterinaria Mexico Pub Date : 2016-09-09 DOI:10.21753/VMOA.3.3.375
R. Macedo-Barragán, Victalina Arredondo-Ruiz, Alejandro Cervantes-Lechuga
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引用次数: 4

摘要

引用本文:Macedo Barragan RJ, Arredondo Ruiz V, Cervantes Lechuga A.墨西哥科利马Pelibuey, Katahdin和Blackbelly公羊的头尾形态。墨西哥兽医局。2016; 3(3)。对墨西哥科利马州的Pelibuey、Katahdin和Blackbelly公羊的头尾形态进行了表征、比较和分析。总共53只2岁以下的公羊进行了以下12项头侧和尾侧测量:颅宽、颅长、头宽、头长、头深、脸宽、脸长、耳宽、耳长、尾长、关节尾宽和尾尖尾宽。卡塔丁公羊的颅宽、头宽和尾尖宽度均显著高于伯利布伊公羊和黑腹公羊(P≤0.02)。卡塔丁公羊关节处尾宽大于伯利布公羊(P = 0.01),黑腹公羊为中间值。典型分析确定了CAN1和CAN2两个显著的典型变量,分别占总变异的92%和8%。卡塔丁公羊以尾端宽度区分佩利布伊公羊和黑腹公羊,以头长和尾端宽度区分佩利布伊公羊和黑腹公羊。所有的Katahdin公羊都被正确地归为其品种组,而大多数Pelibuey公羊(58.60%)被错误地归为Blackbelly。同样,相当大比例的黑腹公羊(40%)被错误地归类为Pelibuey。尽管Pelibuey、Blackbelly和Katahdin公羊符合各自品种的标准,但典型判别分析的表型表征表明,这些品种之间存在高度的杂交,并表明头长、尖端尾宽和关节尾宽是识别和区分三个绵羊品种的最具判别性的变量。图1所示。头侧和尾侧测量:HL =头长,HW =头宽,HD =头深,CL =颅长,CW =颅宽,FL =脸长,FW =脸宽,EL =耳长,EW =耳宽,TL =尾长,TWJ =关节处尾宽,TWT =尾尖处尾宽
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Head and tail morphology of Pelibuey, Katahdin and Blackbelly rams in Colima, México
Veterinaria Mexico OA ISSN: 2448-6760 Cite this as: Macedo Barragan RJ, Arredondo Ruiz V, Cervantes Lechuga A. Head and tail morphology of Pelibuey, Katahdin and Blackbelly rams in Colima, Mexico. Veterinaria Mexico OA. 2016;3(3). doi: 10.21753/vmoa.3.3.375 A study was conducted with the objective of characterizing, comparing and analyzing the cephalic and caudal morphologies of Pelibuey, Katahdin and Blackbelly rams in the state of Colima, Mexico. A total of 53 rams, up to 2 years of age were scored for the following12 cephalic and caudal measurements: cranial width, cranial length, head width, head length, head depth, face width, face length, ear width, ear length, tail length, tail width at the joint and tail width at the tip. Katahdin rams had a significantly greater cranial width, head width and tail at the tip width than Pelibuey and Blackbelly rams (P ≤  0.02). The tail width at the joint was greater in Katahdin rams than in Pelibuey rams (P = 0.01), and Blackbelly rams have intermediate values. Canonical analysis identified two significant canonical variables, CAN1 and CAN2, which accounted for 92% and 8% of the total variation, respectively. Katahdin rams were separated from Pelibuey and Blackbelly rams by the tail width the tip, while the head length and tail width at the joint differentiated the Pelibuey and Blackbelly rams. All Katahdin rams were correctly assigned within their breed group, while most Pelibuey rams (58.60%) were erroneously grouped as Blackbelly. Likewise, a significant proportion of the Blackbelly rams (40%) were misclassified as Pelibuey. Although Pelibuey, Blackbelly and Katahdin rams meet the standards of their respective breeds, phenotypic characterization using canonical discriminant analysis demonstrated the existence of a high degree of crossbreeding among these breeds and showed that the head length, tail width at the tip and tail width at the joint were the most discriminating variables for identifying and separating the three sheep breeds. Figure 1. Cephalic and caudal measurements: HL = head length, HW = head width, HD = head depth, CL = cranial length, CW = cranial width, FL = face length, FW = face width, EL = ear length, EW = ear width, TL = tail length, TWJ = tail width at the joint, TWT = tail width at the tip
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Veterinaria Mexico
Veterinaria Mexico VETERINARY SCIENCES-
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期刊介绍: Veterinaria México OA (ISSN 2448-6760) is an online scientific journal edited by Universidad Nacional Autónoma de México (UNAM). The journal is Open Access and follows UNAM''s initiative, to transmit knowledge free of charge to the readership and authors, with no Article Processing Charges. This journal publishes advances in Veterinary Sciences and Animal Production, and to reach more lectures across the world the journal was updated since 2014 from its predecessor printed in paper Veterinaria México (ISSN 0301-5092) and its digital version (ISSN 2007-5472).
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