KaydedilenlerDerginizi ekleyin

Dergiler / Turkish Journal of Veterinary and Animal Sciences / 2014 / Cilt: 38 - Sayı: 5

Genetic parameter estimates for selected type traits and milk production traits of Holstein cattle in southern China

Songbai LIU
Huize TAN
Lu YANG
Jianming YI
Sayfa
552–556
Yayın Tarihi
2014-05-01
DOI
—
🏛️Bu makalenin bibliyografik verileri ve tam metin bağlantısı DergiPark üzerinden sağlanmıştır.
DergiPark Kaydı ↗
✨

Yapay Zeka Hızlı Bakış & Çıkarımlar

AI Insight
⚡ TL;DR(1 Cümlede Hızlı Çıkarım)

The genetic parameters calculated from field records will provide valuable information for genetic improvement in type and milk production traits of Holstein cattle in southern China.

📌 3 Maddede Bu Makale

🎯
Amaç & Hipotez:Phenotypic and genetic parameters among udder traits (udder depth, UD; median suspensory line, MS; fore udder attachment, FUA; rear udder height, RUH; rear udder width, RUW), final score (FS), and milk production traits (305-day milk yield, 305 DM; 305-day milk-fat yield, 305 DF; 305-day milk-protein yield, 305 DP) were estimated using a derivative-free restricted maximum likelihood procedure with an animal model.
📊
Temel Bulgular & Veri:The results showed that heritability estimates for selected traits ranged from 0.11 to 0.24.
💡
Sonuç & Katkı:The genetic parameters calculated from field records will provide valuable information for genetic improvement in type and milk production traits of Holstein cattle in southern China.
🔬Tür:Modelleme & Sayısal Simülasyon
📍Kapsam:Genişletilmiş Akademik Örneklem
⚙️Değişkenler:Dairy cattle · udder traits · milk production traits

Özet

Phenotypic and genetic parameters among udder traits (udder depth, UD; median suspensory line, MS; fore udder attachment, FUA; rear udder height, RUH; rear udder width, RUW), final score (FS), and milk production traits (305-day milk yield, 305 DM; 305-day milk-fat yield, 305 DF; 305-day milk-protein yield, 305 DP) were estimated using a derivative-free restricted maximum likelihood procedure with an animal model. The results showed that heritability estimates for selected traits ranged from 0.11 to 0.24. Strong positive genetic correlations were observed for MS, RUH, and RUW with FS (0.42-0.72). A positive genetic relationship was also estimated between MS and 305 DM (0.79). The genetic correlation between UD and 305 DM was -0.20. Positive genetic correlations were found between RUW and milk production traits (0.44-0.89). RUH also had positive genetic relationships with 305 DM (0.27) and 305 DF (0.16). Moderate positive genetic correlations were estimated between FS and milk production traits (0.25-0.35). The genetic parameters calculated from field records will provide valuable information for genetic improvement in type and milk production traits of Holstein cattle in southern China.

Abstract

Phenotypic and genetic parameters among udder traits (udder depth, UD; median suspensory line, MS; fore udder attachment, FUA; rear udder height, RUH; rear udder width, RUW), final score (FS), and milk production traits (305-day milk yield, 305 DM; 305-day milk-fat yield, 305 DF; 305-day milk-protein yield, 305 DP) were estimated using a derivative-free restricted maximum likelihood procedure with an animal model. The results showed that heritability estimates for selected traits ranged from 0.11 to 0.24. Strong positive genetic correlations were observed for MS, RUH, and RUW with FS (0.42-0.72). A positive genetic relationship was also estimated between MS and 305 DM (0.79). The genetic correlation between UD and 305 DM was -0.20. Positive genetic correlations were found between RUW and milk production traits (0.44-0.89). RUH also had positive genetic relationships with 305 DM (0.27) and 305 DF (0.16). Moderate positive genetic correlations were estimated between FS and milk production traits (0.25-0.35). The genetic parameters calculated from field records will provide valuable information for genetic improvement in type and milk production traits of Holstein cattle in southern China.

🔖

Bu Makaleye Atıf Yap

LIU, S., TAN, H., YANG, L., YI, J. (2014). Genetic parameter estimates for selected type traits and milk production traits of Holstein cattle in southern China. Turkish Journal of Veterinary and Animal Sciences, Cilt: 38 - Sayı: 5, 552–556. https://ajindex.com/articles/121492

📄 Tam Metin PDF Okuyucu

📄

PDF görüntüleyici hazırlanıyor...

Kaynakça (12)

  1. Lei CZ, Chen H, Zhang HC, Cai X, Liu RY, Luo LY, Wang CF, Zhang W, Ge QL, Zhang RF et al. Origin and phylogeographical structure of Chinese cattle. Anim Genet 2006; 37: 579–582.
  2. Rogers GW, Spencer SB. Relationship among udder and teat morphology and milking characteristics. J Dairy Sci 1991; 74: 4189–4194.
  3. Rupp R, Boichard D. Genetic parameters for clinical mastitis, somatic cell score, production, udder type traits, and milking ease in first lactation Holsteins. J Dairy Sci 1999; 82: 2198– 2204. Short TH, Lawlor TJ. Genetic parameters of conformation traits, milk yield, and herd life in Holsteins. J Dairy Sci 1992; 75: 1987–1998.
  4. Sewalem A, Kistemaker GJ, Miglior F, Van Doormaal BJ. Analysis of the relationship between type traits and functional survival in Canadian Holsteins using a Weibull proportional hazards model. J Dairy Sci 2004; 87: 3938–3946.
  5. Sewalem A, Kistemaker GJ, Van Doormaal BJ. Relationship between type traits and longevity in Canadian Jerseys and Ayrshires using a Weibull proportional hazards model. J Dairy Sci 2005; 88: 1552–1560. 7. Norman HD, Powell RL, Wright JR, Cassell BG. Phenotypic and genetic relationship between linear functional type traits and milk yield for five breeds. J Dairy Sci 1988; 71: 1880–1896.
  6. Harris BL, Freeman AE, Metzger E. Genetic and phenotypic parameters for type and production in Guernsey dairy cows. J Dairy Sci 1992; 75: 1147–1153.
  7. Tsuruta S, Misztal I, Lawlor TJ. Genetic correlations among production, body size, udder, and productive life traits over time in Holsteins. J Dairy Sci 2004; 87: 1457–1468.
  8. Serdar D, Salahattin K, Erdoğan T. Estimation of variance components and genetic parameters for type traits and milk yield in Holstein cattle. Turk J Vet Anim Sci 2012; 36: 585–591.
  9. De Haas Y, Janss LL, Kadarmideen HN. Genetic and phenotypic parameters for conformation and yield traits in three Swiss dairy cattle breeds. J Anim Breed Genet 2007; 124: 12–19.
  10. Liu SB, Yi JM, Yan BF, Fu HH, Zhang JW, Wang TT, Hu LL, Yi JM. Correlations analysis among udder traits, final score and milk production traits in Chinese Holstein dairy cows. Chin J Anim Sci 2010; 21: 5–8.
  11. Boldman K, Kriese LA, Van Vleck LD, Kachman SD. A Manual for Use of MTDFREML. Washington, DC, USA: USDA Agricultural Research Service; 1993.
  12. DeGroot BJ, Keown JF, Van Vleck LD, Marotz EL. Genetic parameters and responses of linear type, yield traits, and somatic cell scores to divergent selection for predicted transmitting ability for type in Holsteins. J