scholarly journals Conservation of rare wild‐living cattle Bos taurus (L.): coat colour gene illuminates breed history, and associated reproductive anomalies have not reduced herd fertility

2021 ◽  
Author(s):  
S. J. G. Hall ◽  
B. Brenig ◽  
R. A. Ashdown ◽  
M. R. Curry
Keyword(s):  
Bos Taurus ◽  
Coat Colour ◽  
Colour Gene

scholarly journals PSI-8 Comparison of heat stress behaviour between different Canadian Bos taurus cattle breeds using unmanned aerial vehicles

2019 ◽  
Vol 97 (Supplement_3) ◽  
pp. 287-287
Author(s):  
Justin Mufford ◽  
John S Church ◽  
Matt Reudink ◽  
Mark Rakobowchuk ◽  
Carmen Bell ◽  
...  
Keyword(s):  
Heat Stress ◽  
Bos Taurus ◽  
Weather Conditions ◽  
Coat Colour ◽  
Back Surface ◽  
Non Invasive ◽  
Cattle Breeds ◽  
The Mean ◽  
Red Angus ◽  
Stress Behaviour

Abstract Heat stress is an emerging cause of mortality and production loss in Bos taurus beef cattle production in North America. Despite the recent occurrence of extreme heat events in Canadian pastures and feedlots, there is very little heat stress research conducted in Canadian settings. The purpose of this study was to develop a non-invasive method to compare behavioral and physiological indices of heat stress between different Canadian cattle breeds. We used thermal imagery acquired by an unmanned aerial vehicle (UAV) to compare surface temperatures between two colour variants of Black Angus x Canadian Speckle Park calves on pasture. The mean back surface temperature for dark variants (n = 5) was 38.6 °C (SD = 4.9), whereas for light variants (n = 7) it was 31.3 °C (SD = 3.4). In the subsequent summer, we compared respiration rates between breeds varying in coat colour while in feedlot pens, including Black Angus, Red Angus, Hereford, Simmental, Charolais, the new Canadian Speckle Park composite breed and their various cross breeds. We recorded 4K video of cattle with a UAV positioned at nadir directly overhead at a height of ~10–15 m; respiratory behavior was analyzed later using Observer XT software. The mean respiration rate in breaths per minute (BPM) for black coated cattle (110 BPM, SD = 19) and red coated cattle (105 BPM, SD = 20) was higher than white coated cattle (94 BPM, SD = 21). We conclude that dark-coated cattle show heightened responses to hot temperatures due to increased absorption of solar radiation at the coat; as a result, dark-coated cattle are likely more susceptible to heat-stress related production losses than light-coated cattle under temperate summer weather conditions. We further conclude that UAVs are a novel and non-invasive tool to study cattle heat stress behavior in feedlot and pasture settings.

Assignment of the horse grey coat colour gene to ECA25 using whole genome scanning

2002 ◽  
Vol 33 (5) ◽  
pp. 338-342 ◽  
Author(s):  
J. E. Swinburne ◽  
A. Hopkins ◽  
M. M. Binns
Keyword(s):  
Coat Colour ◽  
Whole Genome ◽  
Genome Scanning ◽  
Colour Gene

scholarly journals On the way to functional agro biodiversity: coat colour gene variability in goats

animal ◽  
2012 ◽  
Vol 6 (1) ◽  
pp. 41-49 ◽  
Author(s):  
L. Nicoloso ◽  
R. Negrini ◽  
P. Ajmone-Marsan ◽  
P. Crepaldi
Keyword(s):  
Coat Colour ◽  
Colour Gene ◽  
Gene Variability ◽  
The Way

scholarly journals MORPHO-PHYSIOLOGICAL RESPONSES OF BOS INDICUS, BOS TAURUS AND CROSSBRED WEANED HEIFERS TO SEASONAL VARIATIONS

2021 ◽  
pp. 186-192
Author(s):  
Ariadne Pegoraro Mastelaro ◽  
Eliane Sayuri Miyagi ◽  
Nivaldo Karvatte Junior ◽  
Gilberto Romeiro de Oliveira Menezes ◽  
Paulo Gustavo Macedo de Almeida Martins ◽  
...  
Keyword(s):  
Visual Analysis ◽  
Production Systems ◽  
Bos Taurus ◽  
Bos Indicus ◽  
Morphological Characteristics ◽  
Coat Colour ◽  
Hair Coat ◽  
Genetic Groups ◽  
Tropical Conditions ◽  
Humidity Index

Animals kept in extensive production systems are constantly exposed to the effects of climatic aspects, which could favour thermal discomfort, decreasing productive and reproductive performances. Utilisation of Bos taurus crosses with Bos indicus animals is increasing in the tropics aimed at improving production and it is now well known how these animals respond in such environment. The objective was to characterize the morpho-physiological thermoregulation responses of weaned heifers from four different genetic groups to infer regarding the different degrees of adaptation to heat under tropical conditions Forty-eight, pasture-kept, 6-month-old, weaned heifers from four distinct genetic groups: (1) Nellore; (2) Senepol; (3) Angus x Nellore; and, (4) ¼ Brahman x ¼ Nellore x ½ Senepol (Tri-cross) were evaluated. Skin, hair coat and rectal temperatures; sweating rate; respiratory and heart rates; visual analysis of hair and hair coat colour; hair coat temperature and thickness; and length, diameter, density and number of hairs were evaluated. In addition, the temperature-humidity index, black-globe temperature and humidity index, and radiant thermal load were determined. Angus x Nellore animals presented the lowest (P=0.008) respiratory rate. Rectal temperature did differ (P=0.001) between seasons. Angus x Nellore heifers showed the greatest (P=0.001) values for the morphological measures in the evaluated months, coinciding with thermal comfort indexes above those considered comfortable for cattle.  Nellore (Bos indicus), Brahman x Nellore x Senepol, and Senepol (B. taurus) present the best adaptive traits in savanna. The utilisation of B. indicus animals or adapted breed confers desirable morphological characteristics for the tropical environment. 

scholarly journals Authentication of “mono-breed” pork products: Identification of a coat colour gene marker in Cinta Senese pigs useful to this purpose

2016 ◽  
Vol 184 ◽  
pp. 71-77 ◽  
Author(s):  
L. Fontanesi ◽  
E. Scotti ◽  
M. Gallo ◽  
L. Nanni Costa ◽  
S. Dall'Olio
Keyword(s):  
Coat Colour ◽  
Gene Marker ◽  
Pork Products ◽  
Colour Gene

Comparative linkage mapping of the Grey coat colour gene in horses1

2005 ◽  
Vol 36 (5) ◽  
pp. 390-395 ◽  
Author(s):  
G. Pielberg ◽  
S. Mikko ◽  
K. Sandberg ◽  
L. Andersson
Keyword(s):  
Linkage Mapping ◽  
Coat Colour ◽  
Colour Gene

scholarly journals Whole-genome sequencing of endangered Zhoushan cattle suggests its origin and the association of MC1R with black coat colour

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Lihua Jiang ◽  
Tetsuo Kon ◽  
Chunyan Chen ◽  
Ryota Ichikawa ◽  
Qiyuan Zheng ◽  
...  
Keyword(s):  
Whole Genome Sequencing ◽  
Genome Sequencing ◽  
Bos Taurus ◽  
Eastern China ◽  
Bos Indicus ◽  
Cattle Breed ◽  
Coat Colour ◽  
Whole Genome ◽  
Angus Cattle ◽  
Genomic Regions

AbstractZhoushan cattle are an endangered cattle breed in the Zhoushan islands in China. Since Zhoushan cattle have been bred in isolation, they show unique characteristics, such as dark black coat colour. However, no studies have been conducted on the genome of Zhoushan cattle. Here, we performed whole-genome sequencing of seven individuals of Zhoushan cattle and nine cattle in Wenling, geographically close to the Zhoushan islands. By integrating our data and publicly-available data, we found that Zhoushan cattle are genetically highly similar to Bos indicus cattle in south-eastern China. Furthermore, by identifying the genomic regions shared between Zhoushan cattle and Angus cattle, a Bos taurus breed, we found that the p.F195L mutation in melanocyte-stimulating hormone receptor (MC1R) could be associated with their dark black coat colour. Taken together, our results provide a valuable resource for characterising the uniqueness of Zhoushan cattle.

Assignment of the appaloosa coat colour gene (LP) to equine chromosome 1

2004 ◽  
Vol 35 (2) ◽  
pp. 134-137 ◽  
Author(s):  
R. B. Terry ◽  
S. Archer ◽  
S. Brooks ◽  
D. Bernoco ◽  
E. Bailey
Keyword(s):  
Coat Colour ◽  
Chromosome 1 ◽  
Colour Gene

scholarly journals Reduced pigmentation (rp), a new coat colour gene with effects on kidney lysosomal glycosidases in the mouse

1981 ◽  
Vol 37 (1) ◽  
pp. 95-103 ◽  
Author(s):  
S. Gibb ◽  
E. M. Håkansson ◽  
L.-G. Lundin ◽  
J. G. M. Shire
Keyword(s):  
Coat Colour ◽  
Chromosome 7 ◽  
Colour Gene ◽  
Lysosomal Glycosidases

SUMMARYA spontaneous autosomal mutation in C57BL/Tb mice, provisionally called reduced pigmentation, symbol rp, has pronounced effects on three kidney lysosomal glycosidase activities. Homozygous rprp mice have significantly higher activities of β-galactosidase, β-glucuronidase and N-acetyl-β-hexosaminidase than their heterozygous litter-mates. Homozygotes have light ears and tails, diluted fur and dark eyes. The mutation is not allelic to any known to affect lysosomal functions, or to a number of pigmentation variants with similar phenotypic effects. The locus is on chromosome 7.

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