Results 211 to 220 of about 18,168 (244)
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Cryopreservation of bos taurus vs bos indicus embryos: are they really different?
Theriogenology, 2002Cryopreservation with storage at very low temperatures is essential to make full use of this technology for both biological and commercial reasons. However, most mammalian cells will die if exposed to these temperatures unless they are exposed to cryoprotectant solutions and cooled and warmed at specific rates.
José Antonio Visintin +5 more
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Plasma progesterone concentration in Bos taurus and Bos indicus heifers
Theriogenology, 1980Abstract Progesterone concentrations were determined by radioimmunoassay in the plasma of heifers of German Brown Swiss, Holstein-Friesian and White Fulani cattle during two consecutive estrous cycles in the dry and wet seasons in a tropical climate. Seasonal differences in the levels were not significant but peak levels were significantly higher in ...
Oyewole Adeyemo, Everett Heath
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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.
A. G. Rigo +7 more
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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.
A. G. Rigo +7 more
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Synthesis of primary Bos taurus - Bos indicus chimaeric calves
Animal Reproduction Science, 1983Attempts 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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Fertility on synchronized estrus in crossbred (Bos taurus × Bos indicus) heifers
Theriogenology, 1983This study was performed in Western Maharastra (India). The 272 crossbred heifers were randomly allocated within herds to one of the four following groups: 1) silastic coils, 10 days treatment (n = 65); 2) Norgestomet implants, 10 days treatment (n = 71); 3) prostaglandin F(2alpha) two injections 11 days apart (n = 70); and 4) control (n = 66).
Y.P. Phadnis +5 more
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Carcass and meat quality of Bos indicus x Bos taurus and Bos taurus cattle in northern Australia
Australian Journal of Experimental Agriculture, 1989Liveweights, carcass characteristics, bruising and muscle properties of Bos indicus x Bos taurus (BiX) and Bos taurus (Bt) cattle (1070 steers and 394 cows) were compared from 7 experiments throughout Queensland. In general, the cattle were weighed (unfasted), transported as mixed genotype groups to an abattoir and given access to water from arrival ...
JR Wythes +3 more
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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.
Gordon E. Dickerson +3 more
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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.
Gordon E. Dickerson +3 more
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Spermatogenesis in Bali cattle (Bos sondaicus) and hybrids with Bos indicus and Bos taurus
Research in Veterinary Science, 1990Semen quality, testis size and efficiency of sperm production in Bali cattle (Bos sondaicus) and hybrids with Bos indicus and Bos taurus were determined. Mean (+/- SEM) daily sperm production per gram of testis parenchyma (DSPG) in six purebred Bali bulls was 12.2 +/- 0.7 x 10(6).
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Tropical Animal Health and Production, 2020
D. Carrillo-Gonzalez, J. G. Estrada
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D. Carrillo-Gonzalez, J. G. Estrada
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Comparative Thickness of the Medulla of Bos taurus and Bos indicus Kidneys
Anatomia, Histologia, Embryologia, 1988SummaryTwenty kidneys of 4 years old Bos taurus cattle and 26 kidneys of 2—4 years old Bos indicus (Zebu cattle) of East African Shorthorn breen were examined lobe by lobe after fixation. The cortex and medulla with subunits were measured and compared in the two sub‐species. The width of the cortex was about the same in both.
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