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Table representation of search results timeline featuring number of search results per year.

Year Number of Results
1844 1
1869 1
1875 1
1884 1
1886 1
1890 1
1891 1
1895 1
1898 1
1901 1
1902 2
1908 2
1909 2
1911 1
1912 2
1913 2
1914 2
1915 4
1916 5
1917 5
1918 4
1919 6
1920 4
1921 3
1922 2
1923 2
1924 1
1925 6
1926 3
1927 4
1928 7
1929 3
1930 3
1931 5
1932 2
1933 4
1934 3
1935 3
1936 3
1937 5
1938 3
1939 1
1940 1
1941 2
1942 3
1943 7
1944 8
1945 145
1946 734
1947 491
1948 458
1949 374
1950 144
1951 249
1952 195
1953 179
1954 162
1955 158
1956 145
1957 151
1958 116
1959 179
1960 170
1961 176
1962 207
1963 243
1964 425
1965 383
1966 395
1967 428
1968 477
1969 444
1970 421
1971 485
1972 496
1973 588
1974 696
1975 2161
1976 1830
1977 1893
1978 1803
1979 2331
1980 3017
1981 3832
1982 3771
1983 3941
1984 4222
1985 4321
1986 4423
1987 4163
1988 4211
1989 4580
1990 4897
1991 5017
1992 5146
1993 5297
1994 5568
1995 5795
1996 5958
1997 5841
1998 6045
1999 6007
2000 6399
2001 6344
2002 6542
2003 6867
2004 7092
2005 7468
2006 7743
2007 8272
2008 8778
2009 9039
2010 9704
2011 10171
2012 10905
2013 10833
2014 10834
2015 10666
2016 6858
2017 5181
2018 6169
2019 6009
2020 6442
2021 6507
2022 5859
2023 5508
2024 1752

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282,414 results

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Page 1
Anatomy and physiology of the bull's reproductive system.
Fayrer-Hosken R. Fayrer-Hosken R. Vet Clin North Am Food Anim Pract. 1997 Jul;13(2):195-202. doi: 10.1016/s0749-0720(15)30335-2. Vet Clin North Am Food Anim Pract. 1997. PMID: 9216043 Review.
However, the mechanism has already been predetermined by the bull's genetic makeup and, to a lesser extent, the environment. Although the endocrine system appears robust, excessive pressures can inhibit or arrest the process. Similarly, structural limits to the b …
However, the mechanism has already been predetermined by the bull's genetic makeup and, to a lesser extent, the environment. A …
Heat stress and bull fertility.
Morrell JM. Morrell JM. Theriogenology. 2020 Sep 1;153:62-67. doi: 10.1016/j.theriogenology.2020.05.014. Epub 2020 May 12. Theriogenology. 2020. PMID: 32442741 Free article. Review.
Heat stress occurs when the body's normal physiological mechanisms to regulate body temperature cannot cope with external conditions. ...The effects of mild, moderate and severe heat stress are somewhat different, with cattle exposed to mild and moderate heat stress …
Heat stress occurs when the body's normal physiological mechanisms to regulate body temperature cannot cope with external conditions. …
Genetics. It's a bull's market.
Lewin HA. Lewin HA. Science. 2009 Apr 24;324(5926):478-9. doi: 10.1126/science.1173880. Science. 2009. PMID: 19390037 No abstract available.
Physical Evaluation of Beef Bulls.
Paschal JC, Jones AL. Paschal JC, et al. Vet Clin North Am Food Anim Pract. 2024 Mar;40(1):11-18. doi: 10.1016/j.cvfa.2023.09.001. Epub 2023 Oct 5. Vet Clin North Am Food Anim Pract. 2024. PMID: 37805382 Review.
Physical evaluation of beef bulls is important in determining their ability to be long-lived useful breeding animals. A basic examination should include an assessment of the bull's conformation, gait, and overall appearance. Skeletal soundness can be easily evaluate …
Physical evaluation of beef bulls is important in determining their ability to be long-lived useful breeding animals. A basic examination sh …
Sexual maturation in the bull.
Rawlings N, Evans AC, Chandolia RK, Bagu ET. Rawlings N, et al. Reprod Domest Anim. 2008 Jul;43 Suppl 2:295-301. doi: 10.1111/j.1439-0531.2008.01177.x. Reprod Domest Anim. 2008. PMID: 18638138 Review.
In this review, we describe the process of sexual maturation in the bull calf. The testes of the bull grow relatively slowly until approximately 25 weeks of age and then a rapid phase of growth occurs until puberty, at 37-50 weeks of age. ...Several lines of study h …
In this review, we describe the process of sexual maturation in the bull calf. The testes of the bull grow relatively slowly u …
Managing Beef Bulls During the Off-Season.
Jones AL. Jones AL. Vet Clin North Am Food Anim Pract. 2024 Mar;40(1):179-183. doi: 10.1016/j.cvfa.2023.09.004. Epub 2023 Oct 20. Vet Clin North Am Food Anim Pract. 2024. PMID: 37867089 Review.
The value realized from beef bulls includes number and quality of calves sired, weight of calves sold, production value of daughters retained, and the bull's salvage value. Considering the importance of maintaining and recouping the cost of this significant investme …
The value realized from beef bulls includes number and quality of calves sired, weight of calves sold, production value of daughters retaine …
Relationship between dam's age at bull's birth and bull's genetic evaluation.
Ferris TA, Schneider JC, Mao IL. Ferris TA, et al. J Dairy Sci. 1990 May;73(5):1327-36. doi: 10.3168/jds.S0022-0302(90)78799-1. J Dairy Sci. 1990. PMID: 2365889 Free article.
Bulls' PD, parent average, and pedigree index milk decreased with increasing age of dams at bull's birth. This appears to be due to decrease in maternal grandsire's PD milk and dam's Cow Index milk with increase in age of dam. ...The increase in PD mil …
Bulls' PD, parent average, and pedigree index milk decreased with increasing age of dams at bull's birth. This appears to be d …
Ultrasonography for monitoring reproductive function in the bull.
Kastelic JP, Brito LF. Kastelic JP, et al. Reprod Domest Anim. 2012 Jun;47 Suppl 3:45-51. doi: 10.1111/j.1439-0531.2012.02042.x. Reprod Domest Anim. 2012. PMID: 22681298 Review.
Diagnostic ultrasonography has been widely used for examination of the reproductive tract of female cattle, but more sparingly in bulls. Typical clinical ultrasonographic examinations of bull testes are unlikely to affect semen quality or sperm production. The ultra …
Diagnostic ultrasonography has been widely used for examination of the reproductive tract of female cattle, but more sparingly in bul …
Management of Male Reproductive Tract Injuries and Disease.
Hopper RM. Hopper RM. Vet Clin North Am Food Anim Pract. 2016 Jul;32(2):497-510. doi: 10.1016/j.cvfa.2016.01.015. Epub 2016 Apr 1. Vet Clin North Am Food Anim Pract. 2016. PMID: 27039689 Review.
Medical and surgical management can be used to restore a bull that has suffered a reproductive tract malady. The economic cost of treatment weighed against the bull's replacement value as well as prognosis for recovery is of prime consideration. ...
Medical and surgical management can be used to restore a bull that has suffered a reproductive tract malady. The economic cost of tre …
Understanding and evaluating bovine testes.
Kastelic JP. Kastelic JP. Theriogenology. 2014 Jan 1;81(1):18-23. doi: 10.1016/j.theriogenology.2013.09.001. Theriogenology. 2014. PMID: 24274406 Review.
However, high-energy diets after weaning (>200 days) often reduced sperm production and semen quality. A bull's testes and scrotum have opposing (complementary) temperature gradients, which keep the testicular temperature 2 C to 6 C cooler than core body temperat …
However, high-energy diets after weaning (>200 days) often reduced sperm production and semen quality. A bull's testes and …
282,414 results
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