Results 181 to 190 of about 18,633 (214)

Local immune response against larvae of Rhipicephalus (Boophilus) microplus in Bos taurus indicus and Bos taurus taurus cattle

International Journal for Parasitology, 2010
Bos taurus indicus cattle are less susceptible to infestation with Rhipicephalus (Boophilus) microplus than Bos taurus taurus cattle but the immunological basis of this difference is not understood. We compared the dynamics of leukocyte infiltrations (T cell subsets, B cells, major histocompatibility complex (MHC) class II-expressing cells ...
Constantinoiu, C. C., Jackson, L. A., Jorgensen, W. K., Lew-Tabor, A. E., Piper, E. K., Mayer, D. G., Venus, B., Jonsson, N. N.   +7 more
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Effect of early luteolysis in progesterone-based timed AI protocols in Bos indicus, Bos indicus×Bos taurus, and Bos taurus heifers

Theriogenology, 2008
The objective of this study was to evaluate the effects of treatment with an intravaginal progesterone-releasing device (CIDR) and estradiol benzoate (EB) on follicular dynamics in Bos indicus (n=23), Bos taurus (n=25), and cross-bred (n=23) heifers. To assess the influence of reduced serum progesterone concentrations during 8 days of treatment with a ...
J B P, Carvalho, N A T, Carvalho, E L, Reis, M, Nichi, A H, Souza, P S, Baruselli   +5 more
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223 PREANTRAL FOLLICLES POPULATION IN BOS TAURUS INDICUS AND BOS TAURUS TAURUS FEMALES

Reproduction, Fertility and Development, 2009
Bos taurus indicus females provide a greater in vivo oocyte recovery (2-4 times more) in comparision with Bos taurus taurus. This aspect has strongly contributed for the success of the embryo industry in Brazil. Little information is available to explain this difference.
K. C. F. Silva, G. M. G. Santos, L.S. Siloto, M. F. Hertel, E. R. Andrade, M. I. B. Rubin, L. Sturion, F. A. M. Sterza, M. M. Seneda   +8 more
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38 VITRIFICATION OF BOS TAURUS INDICUS AND BOS TAURUS INDICUS × BOS TAURUS TAURUS EMBRYOS PRODUCED IN THE PRESENCE OR ABSENCE OF FETAL CALF SERUM

Reproduction, Fertility and Development, 2011
In vitro-produced Bos taurus indicus (zebu) and Bos taurus indicus × Bos taurus taurus (cross-bred) embryos behave differently when vitrified. The present experiment aimed to examine the effect of vitrification on embryos produced in the presence or absence of FCS.
D. M. Paschoal, M. J. Sudano, T. S. Rascado, L. C. O. Magalhães, L. F. Crocomo, J. F. Lima-Neto, M. D. Guastali, R. R. D. Maziero, A. Martins Jr., F. C. Landim-Alvarenga   +9 more
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Output/input differences among nonpregnant, lactating Bos indicus-Bos taurus and Bos taurus-Bos taurus F1 cross cows.

Journal of Animal Science, 1991
Nonpregnant F1 crossbred cows, progeny of either Hereford (H) or Angus (A) dams and sired by Brahman (Bm), Sahiwal (Sw), Pinzgauer (Pz), H, or A sires, were fed to maintain initial weight while rearing Charolais (C)-sired progeny for a period of 126 d in drylot commencing at about 48 d postpartum.
R D, Green, L V, Cundiff, G E, Dickerson, T G, Jenkins   +3 more
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Heterosis in Bos taurus × Bos indicus crosses

Livestock Production Science, 1985
Abstract Data extracted from reports on Bos taurus × Bos indicus crossbreeding were used to estimate the amount of heterosis in these crosses. Traits studied were age at first calving, milk yield, lactation length, and calving interval. The estimates obtained were (percent of midparent means in parentheses): Age at first calving −3.2 to −4.4 ...
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Pregnancy Rates to Fixed Embryo Transfer of Vitrified IVP Bos indicus, Bos taurus or Bos indicus × Bos taurus Embryos

Reproduction in Domestic Animals, 2015
ContentsThe pregnancy rates obtained after the transfer of cryopreserved in vitro‐produced (IVP) embryos are usually low and/or inconsistent. The objective of this study was to evaluate the pregnancy rates of Holstein, Gyr and Holstein × Gyr cattle after the transfer of vitrified IVP embryos produced with X‐sorted sperm.
L S R, Marinho, B V, Sanches, C O, Rosa, J H, Tannura, A G, Rigo, A C, Basso, J H F, Pontes, M M, Seneda   +7 more
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Synthesis of primary Bos taurus - Bos indicus chimaeric calves

Animal Reproduction Science, 1983
Attempts to produce primary Bos taurus-Bos indicus chimaeric calves by aggregation and co-culture of zona-free morulae were unsuccessful. Consequently, the blastocyst injection technique was developed for ruminant embryos. Between one and six inner cell mass cells were injected into 24 blastocysts which were transferred to 14 cows.
Summers, P. M., Shelton, J. N., Bell, K.
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Bos taurus and Bos indicus genome sequencing

2015
The goals of the study and relevance is to explore the phylogenetic relationships and domestication history of Chinese native cattle and other foreign breeds, identify selected genes and genetic variants related to adaptation, domestication, disease-resistance, growth, and meat quality in different cattle breeds.
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Composition and Yield of Milk from Beef-Type Bos Taurus and Bos Indicus × Bos Taurus Dams

Journal of Animal Science, 1987
Yield, butterfat, protein, lactose and solids-not-fat of milk from mature dams (n = 128) representing eight Bos taurus and Bos indicus X Bos taurus breed types were evaluated approximately 60, 105 and 150 d postpartum. Breed type was a significant source of variation in milk yield at each stage of lactation. Average 24-h milk yields (kg) were: Hereford,
D R, Daley, A, McCuskey, C M, Bailey
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