Identification and phenotypic characterization of genetic groups of the girolando breed in dairy herds of the state of Roraima

Abstract: The objective of this work was to phenotypically characterize creole goats of the Moxotó, Azul, Canindé, Repartida, Marota, and Graúna breeds, comparing them with the Boer, Anglo Nubian, and Alpine exotic breeds, to identify the genetic groups of greater potential for carcass quality and resistance to infection caused by worm. Data on morphometric measurements were obtained for the count of worm eggs in grams of feces (WEGF), Famacha score, carcass measurements, and body weight from 308 animals, in a farm in the state of Piauí, Brazil. Repartida goats showed the highest average for wither height (61.55 cm) and rump height (62.16 cm), and Moxotó goats had the greatest ear length (13.45 cm). The Moxotó breed showed the highest means for carcass and body weight. The lowest average for body weight was observed in Azul goats (24.35 kg), and the lowest WEGF was detected in Repartida goats (200 eggs per gram of feces). The average Famacha score was 2.77. Average linkage was the method that best summarized the information on the morphometric and carcass data. The use of morphometric and carcass measurements provides satisfactory results in the phenotypic characterization of the animals. The Brazilian creole goats, which are considered resistant to worm infection and show high-quality carcass traits, may be indicated for conservation and genetic breeding programs.

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Genetic and phenotypic characterization of intestinal spirochetes colonizing chickens and allocation of known pathogenic isolates to three distinct genetic groups.

Journal of Clinical Microbiology ◽

10.1128/jcm.35.2.412-417.1997 ◽

1997 ◽

Vol 35 (2) ◽

pp. 412-417 ◽

Cited By ~ 71

Author(s):

A J McLaren ◽

D J Trott ◽

D E Swayne ◽

S L Oxberry ◽

D J Hampson

Keyword(s):

Phenotypic Characterization ◽

Genetic Groups

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Genotypic Characterization of Mycobacterium bovis Isolates From Dairy Cattle Diagnosed With Clinical Tuberculosis

Frontiers in Veterinary Science ◽

10.3389/fvets.2021.747226 ◽

2021 ◽

Vol 8 ◽

Author(s):

Elizabeth Hortêncio de Melo ◽

Harrison Magdinier Gomes ◽

Philip Noel Suffys ◽

Márcia Quinhones Pires Lopes ◽

Raquel Lima de Figueiredo Teixeira ◽

...

Keyword(s):

Mycobacterium Bovis ◽

Bovine Tuberculosis ◽

Essential Role ◽

Allelic Diversity ◽

Infectious Agent ◽

The State ◽

Dairy Herds ◽

Genotypic Characterization ◽

Epidemiological Tool

Molecular diagnosis of bovine tuberculosis plays an essential role in the epidemiological knowledge of the disease. Bovine tuberculosis caused by Mycobacterium bovis represents a risk to human health. This study aimed to perform the genotypic characterization of M. bovis isolated from bovines diagnosed as tuberculosis from dairy herds in the state of Pernambuco, Brazil. Granulomas from 30 bovines were sent for microbiological culture, and colonies compatible with Mycobacterium spp. were obtained in at least one culture from 17/30 granulomas. All isolates were confirmed to be M. bovis by spoligotyping and 24loci MIRU-VNTR typing. While spoligotyping characterized the isolates as SB0121, SB0295, SB0852, SB0120, and an unclassified genotype, 24loci MIRU-VNTR rendered two clusters of two isolates each and 13 unique profiles. Loci ETR-A showed higher discriminatory power, and loci (ETR-B, ETR-C, MIRU16, MIRU27, and QUB26) showed moderate allelic diversity. This is the first study on the genetic variability of the infectious agent cause of bovine TB in Pernambuco and demonstrates variability of strains in the state. Thus, it corroborates the importance of this microorganism as agent of bovine tuberculosis and its zoonotic potential, this epidemiological tool being a determinant in the rigor of the sanitary practices of disease control in dairy herds.

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