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Directory of Open Access Journals Sweden. En la planta procesadora de Montecillos R. Full Text Available The American continent was colonized in the 16th century by Europeans who first introduced cattle of Bos taurus origin. Accounts register introduction of Bos indicus cattle into South America in the 19th and continuing through the 20th century, and most reported imports were males derived from the Bkvinos subcontinent.

JVA V3 1 | Journal of Veterinary Andrology –

In the present study we show, by using mitochondrial DNA mtDNA polymorphism, major participation of matrilineages of taurus origin in the American Zebu purebred origin, i. Moreover, we bbovinos created a restriction map identifying polymorphism among B. Results are discussed concerning American Zebu origins and potential use of this information for investigating the contribution of cytoplasmic genes in cattle production traits. When and how did Bos indicus introgress into Mongolian cattle?

The Mongolian cattle are one of the most widespread breeds with strictly Bos taurus morphological features in northern China. In contrast, all 25 male Mongolian cattle samples revealed B. Historical and bovinps records indicate that B. The two types of cattle coexisted for many centuries in Xinjiang, as depicted in clay and wooden figurines unearthed in the Astana cemetery in Turfan 3rd-8th century AD.

Multiple lines of evidence suggest that the earliest B. This conclusion differs from the previous hypothesis that zebu introgression to Mongolian cattle happened during the Mongol Empire era in the 13th century.

Superovulation and embryo production in tropical adapted Bos taurus Caracu and Bos indicus Nelore cows. Cows were then inseminated 48 and 62 h after cloprostenol treatment and embryos were recovered non-surgically seven days after first insemination.

These results suggest that Caracu and Nelore cows superovulated in tropical climate had similar ovarian responses and embryo production. The present investigation em focused on the comparative studies on Hsp90 expression among Frieswal and Sahiwal under in vitro and environmental heat stress. Measured immediately after the in vitro heat shock to the peripheral blood mononuclear cells PBMCsthe relative expression of Hsp90 mRNA was significantly Pcows consistently recorded higher rectal temperatures than the Sahiwal androogico.

Further during this peak summer stress, Sahiwal showed significantly higher levels of mRNA transcripts as well as protein concentration compared to the Frieswal breed. Our findings also interestingly showed that, the cell viability of PBMC are significantly higher among the Sahiwal than Frieswal. Taken together, the experiments of both induced in vitro and environmental stress conditions indicate that, Sahiwal may express higher levels of Hsp90 then Frieswal to regulate their body temperature and increase cell survivality under heat stressed conditions.

Genital tract of zebu Bos indicus cows in Niger. Each animal was examined before slaughter.

Their mean body condition score was 1. The following characteristics were observed: These characteristics were significantly p In vivo comparison of susceptibility between Bos indicus and Bos taurus cattle types to Theileria parva infection.

Full Text Available The objective of this study was to determine whether Bos taurus cattle differ form Bos indicus in their susceptibility to infection with the Muguga stabilate of Theileria parva and in their resistance to the resultant disease.

All the animals except one Friesian and one Zebu developed schizont parasitosis. All the improved Borans, nine of the Friesians, eight of the unimproved Borans and six of the Zebus developed a febrile response. Four of the improved Borans, four of the Friesians and three of the unimproved Borans died of theileriosis.


There was no significant difference in the two parameters between the other bovknos groups. The study showed that three B. However, Zebus born to dams from an ECF endemic area showed a better ability to control the course of disease than cattle from ECF free areas.

Effect of monensin withdrawal on intake, digestion, and ruminal fermentation parameters by Bos taurus indicus and Bos taurus taurus steers bovlnos bermudagrass hay.

Effects of monensin withdrawal and cattle subspecies andrologiico the utilization of bermudagrass hay Subspecies were concurrently subjected to a 2-period, 2-treatme Effect of monensin inclusion on intake, digestion, and ruminal fermentation parameters by Bos taurus indicus and Bos taurus taurus steers consuming bermudagrass hay. Effects of monensin inclusion and cattle subspecies on utilization of bermudagrass hay Subspecies were concurrently subjected to a 2-period, 2-t Genotype x environment interactions for fatty acid profiles in Bos indicus and Bos taurus finished on pasture or grain.

A study was conducted to characterize lipid profiles in the M.

On the other hand, with pasture-finishing a greater deposition of intermediate FA from ruminal biohydrogenation was observed in B. Overall, FA profiles were affected more by finishing system in B. Peranakan Ongole PO is a major Indonesian Bos indicus breed that derives from animals imported from India in the late 19 th century.

Early imports were followed by hybridization with the Bos javanicus subspecies of cattle. Here, we used genomic data to partition the ancestry components of PO cattle and map loci implicated in birth weight. We found that B. Only two nearly fixed B.

The zebu component of the PO genome was estimated to derive from at least two distinct ancestral pools. Additionally, well-known loci underlying body size in other beef cattle breeds, such as the PLAG1 region on chromosome 14, were found to also affect birth weight in PO cattle. This study is the first attempt to characterize PO at the genome level, and contributes evidence of successful, stabilized B.

Additionally, previously described loci implicated in body size in worldwide beef cattle breeds also affect birth weight in PO cattle. Mitochondrial DNA single nucleotide polymorphism associated with weight estimated breeding values in Nelore cattle Bos indicus. The 50 cattle carrying B. The oocyte donor cows were housed in a tiestall system and fed twice daily and h.

Twenty-one days before the beginning of the experiment, the animals were fed with a maintenance diet for adaptation followed by the experimental diets M and 1. The recovered oocytes were cultured in vitro for 7 d. We measured glucose and insulin concentrations and performed glucose tolerance tests and the relative quantification of transcripts PRDX1, HSP No interactions were observed between the effects of genetic groups and dietary energy level on the qualitative viable oocytes, quality grade, and oocyte quality index and quantitative oocytes recovered oocyte variables.

There were no effects of dietary energy level on the qualitative and quantitative oocyte variables. However, Bos indicus cows had greater numbers of recovered structures, viable oocytes, and A and B oocyte grades as well as better oocyte quality index scores and lower DNA fragmentation rates compared with Bos taurus donors. In vitro embryo production cleavage and blastocyst rates and number of embryos was similar between diets, but the 1.

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Moreover, Bos indicus cows on the 1. All cows fed 1. On Day 0 of the experiment, within each location, heifers were equally distributed to treatments by reproductive tract score RTS; Scale Heifers exhibiting estrus at 60 h Feed intake and weight changes in Bos indicus-Bos taurus crossbred steers following Bovine Viral Diarrhea Virus Type 1b challenge under production conditions.

Bovine viral diarrhea virus BVDV has major impacts on beef cattle production worldwide, but the understanding of host animal genetic influence on illness is limited. Ixodidae sobre Bos taurus y Bos indicus en Costa Rica. La presencia de Amblyomma spp. Samples were collected from bovines Bos taurus and Bos indicusbovinps three production systems: There is an uneven distribution of Amblyomma spp. Kunkle Interdisciplinary Beef Symposium: Temperament and acclimation to human handling influence growth, health, and reproductive responses in Bos taurus and Bos indicus cattle.


Temperament in cattle is defined as the fear-related behavioral responses when exposed to human handling. To assess the impacts of temperament on various beef production systems, our group associated these evaluation criteria with productive, reproductive, and health characteristics of Bos taurus and Bos indicus -influenced cattle. As expected, EXC cattle had greater bovinso cortisol vs. ADQ cattle during handling, independent of breed type B. ADQ cohorts across breed types B.

In regards to feedlot cattle, B. Heterosis for meat quality and fatty acid profiles in crosses among Bos indicus and Bos taurus finished on pasture or grain.

Physicochemical properties and fatty acid profiles of meat from Bos indicusBos taurus and crossbred B. Meat quality and fatty andrllogico profiles generally benefited with crossbreeding, but the advantages from heterosis differed among finishing systems. The Warner-Bratzler shear-force in fresh and aged meat was reduced due to heterosis in pasture-finishing, but the effect was minor under grain-finishing. Fixed-time artificial insemination with estradiol and progesterone for Bos indicus cows II: In Experiments 1, 2, and 3, we evaluated the effects of temporary weaning TWequine chorionic gonadotropin eCGand follicle-stimulating hormone FSH treatments on results of a fixed-time artificial insemination TAI protocol in postpartum Bos indicus cows.

Pregnancy rate differed Pcow group within farm, by breed Bos indicus Days postpartum at beginning of protocol did not affect PR 30 to 60 d, Animals were either treated orally with aqueous extract of Vernonia amygdalina at andrologido dose concentration of 1. Full Exzmen Available Abstract Background Indian cattle Bos indicus and riverine buffalo Bubalus bubalis give a poor yield of andrologivo but it has a high fat and protein percentage compared to taurine cattle.

Results We screened the reported missense mutations in six bovinks and five buffalo breeds. Conclusion This study provides an indirect evidence that all the Boinos cattle and buffalo breeds have fixed alleles with respect to DGAT1 and ABCG2 genes reported to be responsible for higher milk fat yield, higher fat and protein percent.

The genotypic data comprised over eexamen, single-nucleotide polymorphism markers scored in bulls, and the phenotypic data included deregressed breeding values dEBV for weight measurements at birth, weaning and yearling, as well visual scores taken at weaning and yearling for carcass finishing precocity, conformation and muscling.

Both analyses pointed to the pleomorphic adenoma gene 1 PLAG1 as a major pleiotropic gene.

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VEGAS analysis revealed additional candidates. From these, 57 participated, together with PLAG1, in a network involved in the modulation of the function and expression of IGF1 insulin like growth factor 1, IGF2 insulin like growth factor 2, GH1 growth hormone 1, IGF1R insulin like growth factor 1 receptor and GHR growth hormone receptor, suggesting that those pleiotropic genes operate as satellite regulators of the growth pathway.

Urinary excretion of purine derivatives as an index of microbial protein supply in cross-bred Bos indicus x Bos taurus cattle in tropical environment. Four experiments were carried out to establish a response model between urinary excretion of purine derivatives PD and microbial production in Bos indicus x Bos taurus cross-bred cattle: