Heritability of scrotal circumference adjusted and unadjusted for body weight in Nellore bulls, using univariate and bivariate animal models

Theriogenology

Volumn 49, Issue 7, 1998, Pages 1389-1396

  Quirino, C R ^a   Bergmann, J A G ^a  

^a FEDERAL UNIVERSITY OF MINAS GERAIS   (Brazil)

Author keywords

Body weight; Genetic parameters; Scrotal circumference; Zebu cattle

Indexed keywords

AGE; ANIMAL; ANIMAL EXPERIMENT; ARTICLE; BIOLOGICAL MODEL; BODY WEIGHT; BRAZIL; CATTLE; CYTOGENETICS; GENETIC ANALYSIS; GENETICS; HERITABILITY; HISTOLOGY; MALE; METHODOLOGY; NONHUMAN; SCROTUM;

AGE FACTORS; ANIMALS; BODY WEIGHT; BRAZIL; CATTLE; MALE; MODELS, BIOLOGICAL; SCROTUM;

ANIMALIA; BOS INDICUS; BOS TAURUS;

EID: 0032080075     PISSN: 0093691X     EISSN: None     Source Type: Journal    
DOI: 10.1016/S0093-691X(98)00085-5     Document Type: Article

References (21)

1. 1. Bergmann JAG, Zamborlini LC, Procópio CSO, Andrade VJ, Vale Filho VR. Estimativas de parâmetros genéticos do perímetro escrotal e do peso corporal em animais da raça Nelore. Arq Bras Med Vet Zoot 1996; 48: 69-78.
2. 2. Boldman KG, Van Vleck LD. User's Guide MTDFREMI. US Department of Agriculture, 1993.
3. 3. Bourdon RM, Brinks JS. Scrotal circumference in yearling Hereford bulls: adjustment factors, heritabilities and genetic, environmental and phenotypic relationships with growth traits. J Anim Sci 1986; 62: 958-967.
4. 4. Brinks JS. Relationships of scrotal circumference to puberty and subsequent reproductive performance in male and female offspring. In: Factors Affecting Calf-Crop, 1994; 26: 363-37D.
5. 5. Cardoso FM. Desenvolvimento dos òrgāos genitais masculinus de Zebu (Bos indicus) da raça Nelore, do périodo fetal aos 36 meses de idade. Ph.D. Thesis, Instituto Ciências Biológicas, UFMG, 1977.
6. 6. Coulter GH, Foote RH. Relationship of body weight to testicular size and consistency in growing Holstein bulls. J Anim Sci 1977; 44: 1076-7084.
7. 7. Coulter GH, Foote RH. Bovine testicular measurements as indicators of reproductive performance and their relationship to productive traits in cattle: a review. Theriogenology 1979; 11: 297-311.
8. 8. Hohenboken WD. Phenotypic, genetic and environmental correlations. In: Chapman AB (ed), General and Quantitative Genetics, World Animal Science: A4, 1985; 6: 121-134.
9. 9. Knights SA, Baker RL, Gianola D, Gibb J. Estimates of heritabilities and of genetic and phenotypic correlations among growth and reproductive traits in yearling Angus bulls. J Anim Sci 1984; 58: 887-893.
10. 10. Lôbo RB, Reyes A, Ferraz JB, Bezerra LA, Mercadante ME, Duarte FA. Bivariate animal model analysis of growth weights and scrotal circumference of Nelore cattle in Brasil. In: Proc. 5th World Congress on Genetics Applied to Livestock Production 1994; 17: 199-201
11. 11. MacNeil MD, Newman S, Enns RM, Stewart-Smith J. Relative economic values for Canadian beef production using specialized sire and dam lines. Can J Anim Sci 1994a; 74: 411-417.
12. 12. MacNeil MD, Newman S. Selection indices for Canadian beef production using specialized site and dam lines. Can J Anim Sci 1994b; 74: 419-424.
13. 13. Mercadante ME, Lôbo RB, Reyes, A. Parámetraos genéticos para características de crescimiento en cebuinos de carne. Arch Latinoam Prod Anim 1995; 3:45-89.
14. 14. Meyer K, Hammond K, Mackinnon MJ, Pamell PE. Estimates of covariances between reproduction and growth in Australian beef cattle. J Anim Sci 1991; 69: 3533-3543.
15. 15. Neely JD, Jonhson BH, Dillard EU, Robison OW. Genetic parameters for testes size and sperm number in Hereford bulls. J Anim Sci 1982; 55: 1033-1040.
16. 16. Notter DR, McFadden LG, Bergmann JAG. Relationship between yearling scrotal circumference and measures of female reproduction in Angus cattle. In: Proc. Beef Improvement Federation 1993: 180-184.
17. 17. Pinto PA. O perímetro escrotal como critério de seleçāo em bovinos Nelore (Bos taurus indicus). Ph.D. Thesis, Faculdade Medicina Riberäo Preto, USP, 1994.
18. 18. Quirino CR, Bergmann JAG. Estudo comparativo de funçöes de crescimento do perímetro escrotal na raça Nelore. In: 1° Simpósio Nacional de Melhoramento Animal 1996; 227-229.
19. 19. Quirino CR, Bergmann JAG, Oliveira SMP. Taxa de crescimento relativo como critério para avaliar o desenvolvimento ponderal e testicular de animais Nelore. In: Reuniäo Anual da Sociedade Brasileira de Zootecnia 1996; 1: 184-185.
20. 20. SAS. User's Guide Statistics, Version 6.10 Cary NC: SAS Institute Inc. 1995.
21. 21. Toelle VD, Robison OW. Estimates of genetic correlations between testicular measurements and female reproductive traits in cattle. J Anim Sci 1985; 60: 89-100.