FERTILITY AND PARTURITION PARAMETERS IN BEEF TYPE HEIFERS

Uysal, Ayşe; Tohumcu, Vefa; SARI, ALİ; ZENGİNOĞLU, OĞUZ; Uysal, Soner; CENGİZ, MEHMET; HAYIRLI, ARMAĞAN

Bildiri Özet Bildiri Uluslararası 2022

FERTILITY AND PARTURITION PARAMETERS IN BEEF TYPE HEIFERS

Ayşe Uysal, Vefa Tohumcu, ALİ SARI, OĞUZ ZENGİNOĞLU, Soner Uysal, MEHMET CENGİZ, ARMAĞAN HAYIRLI

7. ULUSAL 3. ULUSLARARASI SÜRÜ SAĞLIĞI VE YÖNETİMİ KONGRESİ ss. 234–235 · 20.10.2022 · 20.10.2022

Özet

Fertility and parturition parameters of Limousin (n=248) and Charolais (n=81) heifers at the age

of 9-11 mo that were imported from Hungary to Doğan Beef Farm were compared. Heifers were fed

TMR formulated to meet nutrient requirements. Heifers were inseminated upon the double-PG

synchronization and natural estrus. Calvings between 07:00 and 19:00 h were considered night

parturitions, those in other hours were considered day parturition. Conception and parturition were

categorized by season (cool/warm, cold, and hot). Data were analyzed using ANOVA, regression, and

chi-square. 14 L (5.65%) and 5 C (6.17%) were culled prior to parturition. 11 (3.55%) heifers (L=9 and

C=2) were culled immediately after parturition. Age at conception (543±7 d) and calving (827±7 d) and

pregnancy duration (285±0.6 d) did not differ by the breed. There was a breed effect on insemination

index (C=3.39±0.22 vs. L=2.32±0.10) and calf weight (C=46.1±0.8 vs. L=40.2±0.3 kg) (P<0.0001).

Females were lighter than males (F=39.5±0.3 vs. M=43.7±0.5 kg, P<0.0001). Ages at conception and

parturition prolonged 25 days with service number [Age at Conception, d=476.21±(Insemination

Number, N x 25.699); R2

=0.2470 and Age at Parturition, d =761.82±(Insemination Number, N x

25.265), R2

=0.2389]. Pregnancy duration prolonged with calf weight [Pregnancy Duration,

d=274.40±(Calf Weight, kg x 0.248), R2

=0.0298). There was no relationship between breed and

conception season. L (76.50%) become pregnant more after synchronization, whereas C (56.58%)

become pregnant more after natural estrus (X2

=29.0282, P<0.0001). Pregnancy rate at first three

services was higher in L (82.48%) than C (59.22%) (X2

=27.5870, P<0.0003). Parturition time and

season were not related to retained placenta rate and calf weight Calving ease was higher for L (58.12%)

than that for C (36.84%) (X2

=10.4244, P<0.0054). Complications at parturition was independent from

breed, calving ease, calf sex. In summary, insemination index was higher for C, whereas calving ease

was higher for L.

Atıf için künye

Uysal, A., Tohumcu, V., SARI, A., ZENGİNOĞLU, O., Uysal, S., CENGİZ, M., & HAYIRLI, A. (2022). FERTILITY AND PARTURITION PARAMETERS IN BEEF TYPE HEIFERS. 7. ULUSAL 3. ULUSLARARASI SÜRÜ SAĞLIĞI VE YÖNETİMİ KONGRESİ (ss. 234–235).

BibTeX

@inproceedings{uysal2022-261095,
  author = {Uysal, Ayşe and Tohumcu, Vefa and SARI, ALİ and ZENGİNOĞLU, OĞUZ and Uysal, Soner and CENGİZ, MEHMET and HAYIRLI, ARMAĞAN},
  title = {FERTILITY AND PARTURITION PARAMETERS IN BEEF TYPE HEIFERS},
  booktitle = {7. ULUSAL 3. ULUSLARARASI SÜRÜ SAĞLIĞI VE YÖNETİMİ KONGRESİ},
  year = {2022},
  pages = {234--235},
  url = {https://akademik.atauni.edu.tr/yayinlar/261095-fertility-and-parturition-parameters-in-beef-type-heifers}
}