Taurine and zebu admixture in Near Eastern cattle: a comparison of mitochondrial, autosomal and Y‐chromosomal data
55
Citation
36
Reference
10
Related Paper
Citation Trend
Abstract:
Summary Eight Bos taurus cattle breeds from the Near East region were screened with a Bos indicus (zebu)‐diagnostic Y‐specific microsatellite ( INRA124 ) to estimate the proportion of zebu Y chromosomes in each population. This value was compared with previously published values for zebu introgression for both the mitochondrial and autosomal gene pools of the same breeds. All breeds revealed considerable levels of introgression from B. indicus cattle when the autosomal data were taken into consideration; this was particularly apparent in cattle populations from Iraq in the east, and declined in the populations further west towards Anatolia. This non‐random pattern of introgression and admixture is suggestive of the introduction of zebu cattle from the region corresponding to present‐day Iran and northern Pakistan. In addition, the maternal and paternal markers demonstrate that the movement of cattle into and within the Near East was complex.Keywords:
Zebu
Introgression
Zebu
Trypanosoma vivax
Cite
Citations (11)
Abstract. A total of 357 adult cows and 29 sires belonging to the long-horned Niger Zebu Bororo cattle population were assessed for 13 body measurements and 11 qualitative traits. Data were jointly analysed with 311 cows and 64 sires belonging to other four West African zebu cattle populations, sampled in Burkina Faso and Benin, representative of both the short-horned and the long-horned West African zebu groups using multivariate statistical methods. Besides the other long-horned zebu breed analysed (Zebu Mbororo of Burkina Faso), Zebu Bororo cattle tended to have the highest mean values for all body measurements. Mahalanobis distance matrices further informed that pairs involving Zebu Bororo cattle had the higher differentiation of the dataset. However, contour plots constructed using eigenvalues computed via principal component analysis (PCA) illustrated a lack of differentiation among West African zebu cattle populations at the body measurements level. Correspondence analysis carried out on the 11 qualitative traits recorded allowed for ascertaining a clear differentiation between the Zebu Bororo and the other zebu cattle populations analysed which, in turn, did not show a clear differentiation at the qualitative type traits level. In our data, Zebu Bororo cattle had in high frequency qualitative features such as dropped ears, lyre-shaped horns and red-pied coat colour that are not frequently present in the other West African zebu populations analysed. A directional selection due to a rough consensus of the stock-keepers may be hypothesised. Performance of further analyses to assess the degree in which such breeding differences may be related to genetic or production differences are advised.
Zebu
Coat
Cite
Citations (7)
Introgression
Hybrid zone
Cite
Citations (18)
Summary Eight Bos taurus cattle breeds from the Near East region were screened with a Bos indicus (zebu)‐diagnostic Y‐specific microsatellite ( INRA124 ) to estimate the proportion of zebu Y chromosomes in each population. This value was compared with previously published values for zebu introgression for both the mitochondrial and autosomal gene pools of the same breeds. All breeds revealed considerable levels of introgression from B. indicus cattle when the autosomal data were taken into consideration; this was particularly apparent in cattle populations from Iraq in the east, and declined in the populations further west towards Anatolia. This non‐random pattern of introgression and admixture is suggestive of the introduction of zebu cattle from the region corresponding to present‐day Iran and northern Pakistan. In addition, the maternal and paternal markers demonstrate that the movement of cattle into and within the Near East was complex.
Zebu
Introgression
Cite
Citations (55)
Zebu
Tick infestation
Anaplasmosis
Cite
Citations (47)
Zebu
Introgression
Gene pool
Genetic admixture
Cite
Citations (21)
Ten savannah-fed, male water buffaloes (5 whole and 5 castrated) were compared in carcass traits and meat quality with two grass-fed groups of ten Zebu-influenced cattle each (ZEBU-I, a sample of well-managed cattle of known history or ZEBU-II, a sample of slaughter cattle of unknown history) selected from a larger data bank to be paired off, at least, in sex, fat cover uniformity and marbling scores to buffaloes. Despite the fact that buffaloes were younger (22 mo. old) at slaughter than cattle groups (26-29 mo. and 36-48 mo. old, as appraised by records or dentition patterns, respectively), their carcasses looked either less (P.05) maturity as ZEBU-II. Zebu-type carcasses graded better (A/A-B) than buffalo
counterparts (C). Buffaloes surpassed both cattle groups in backfat thickness (P>.01) but cutability values were similar to ZEBU-I (P>.05), and a significant species x sex interaction was detected for high-valued boneless cuts when compared to ZEBU-II. Steaks from buffaloes as compared to those from ZEBU-I and ZEBU-II, had lower (P
Zebu
Marbled meat
Cite
Citations (0)
Introgression
Cite
Citations (10)
Utilization of "hidden genes" from wild species has emerged as a novel option for enrichment of genetic diversity for productivity traits. In rice we have generated more than 2000 lines having introgression from 'A' genome-donor wild species of rice in the genetic background of popular varieties PR114 and Pusa44 were developed. Out of these, based on agronomic acceptability, 318 lines were used for developing rice hybrids to assess the effect of introgressions in heterozygous state. These introgression lines and their recurrent parents, possessing fertility restoration ability for wild abortive (WA) cytoplasm, were crossed with cytoplasmic male sterile (CMS) line PMS17A to develop hybrids. Hybrids developed from recurrent parents were used as checks to compare the performance of 318 hybrids developed by hybridizing alien introgression lines with PMS17A. Seventeen hybrids expressed a significant increase in yield and its component traits over check hybrids. These 17 hybrids were re-evaluated in large-size replicated plots. Of these, four hybrids, viz., ILH299, ILH326, ILH867 and ILH901, having introgressions from O. rufipogon and two hybrids (ILH921 and ILH951) having introgressions from O. nivara showed significant heterosis over parental introgression line, recurrent parents and check hybrids for grain yield-related traits. Alien introgressions were detected in the lines taken as male parents for developing six superior hybrids, using a set of 100 polymorphic simple sequence repeat (SSR) markers. Percent introgression showed a range of 2.24 from in O. nivara to 7.66 from O. rufipogon. The introgressed regions and their putative association with yield components in hybrids is reported and discussed.
Oryza
Cite
Citations (45)