Wplyw nasilenia objawow rujowych oraz kondycji na wyniki unasienniania bydla

• Autorzy: Kozdrowski R , Twardon J. , Dejneka G.J. , Dzieciol M.

Warianty tytułu

EN

Influence of estrus intensity and level of physical constitution on results of artificial insemination in cattle

• Języki publikacji: PL

Abstrakty

EN

The study investigated the relationship between estrus intensity and conception rates in dairy cows and heifers as well as between the level of physical constitution and conception rates in cows measured on the day of artificial insemination (AI). Females were submitted for AI after confirming standing estrus, and just prior to insemination the estrus intensity was investigated and classified as strong if three out of four factors were detected i.e. standing, vaginal mucus discharge, high uterine tone or presence of follicles in the ovaries; otherwise the estrus intensity was classified as weak. In the cow’s group (n=48) only those exhibiting estrus between 50 and 100 days following delivery were investigated and only heifers (n=42) that were approximately 18 months old were inseminated. No drugs were administrated for oestrus synchronisation. The study indicated that oestrus intensity had no effect on conception rates in cows (58% vs. 45% cows exhibiting strong and weak oestrus respectively were pregnant) but oestrus intensity did affect the conception rates in heifers (78% vs. 47% heifers exhibiting strong and weak oestrus respectively were pregnant, p<0.05). The physical constitution level measured on the day of AI had no effect on conception rates and was similar in both pregnant and non pregnant cows (3.20 ± 0.18 and 3.31 ± 0.33 respectively).

Słowa kluczowe

PL

objawy rui; bydlo; nasilenie objawow; skutecznosc inseminacji; ruja; skala BCS; krowy; inseminacja; kondycja zwierzat; plodnosc

• Wydawca: -
• Czasopismo: Medycyna Weterynaryjna
• Rocznik: 2006
• Tom: 62
• Numer: 09
• Opis fizyczny: s.1038-1040,tab.,bibliogr.

Twórcy

autor

Kozdrowski R

• Akademia Rolnicza, pl.Grunwaldzki 49, 50-366 Wroclaw

autor

Twardon J.

autor

Dejneka G.J.

autor

Dzieciol M.

Bibliografia

• 1.Domecq J. J., Skidmore A. L., Lloyd J. W., Kaneene J. B.: Relationship between body condition scores and conception at first artificial insemination in a large dairy herd of high yielding holstein cows. J. Dairy Sci. 1997, 80, 113-120.
• 2.Ferguson J. D., Galligan D. T., Thomsen N.: Principial descriptions of body condition score in Holstein cows. J. Dairy Sci. 1994, 77, 2695-2703.
• 3.Heuer C., Schukken Y. H., Dobbelaar P.: Postpartum body condition score and results from the first test day milk as predictors of disease, fertility, yield, and culling in commercial dairy herds. J. Dairy Sci. 1998, 82, 295-304.
• 4.Jaśkowski J. M., Twardoń J.: Kondycja a płodność krów. Medycyna Wet. 2002, 58, 23-25.
• 5.Kurykin J., Jaakama U., Majas L., Jalakas M., Adinik M., Waldmann A., Padrik P.: Fixed time deep intracornual insemination of heifers at synchronized estrus. Theriogenology 2003, 60, 1261-1268.
• 6.Loeffler S. H., de Vries M. J., Schukken Y. H., de Zeeuw A. C., Dijkhuizen A. A., de Graaf F. M., Brand A.: Use of technician scores for body condition, uterine tone and uterine discharge in a model with disease and milk production parameters to predict pregnancy risk at first AI in holstein dairy cows. Theriogenology 1999, 51, 1267-1284.
• 7.Markusfeld O., Galon N., Ezara E.: Body condition score, health, yield and fertility in dairy cows. Vet. Rec. 1997, 141, 67-72.
• 8.Max A.: Analiza przyczyn nieskutecznego unasienniania krów na podstawie badań klinicznych, hormonalnych i immunologicznych. Medycyna Wet. 1990, 46, 352-345.
• 9.Moreira F., Risco C., Pires M. F. A., Ambrose J. D., Drost M., DeLorenzo M., Thatcher W. W.: Effect of body condition on reproductive efficiency of lactating dairy cows receiving a timed insemination. Theriogenology 2000, 53, 1305-1319.
• 10.Morstin J., Brzozowski P., Balcerzak K.: Badania nad nasileniem objawów rui u krów. Medycyna Wet. 1987, 43, 167-169.
• 11.Stevenson J. S., Schmidt M. K., Call E. P.: Estrus intensity and conception rates in holsteins. J. Dairy Sci. 1983, 66, 275-280.
• 12.Tenhagen B. A., Surholt R., Wittke M., Vogel C., Drillich M., Heuwieser W.: Use of Ovsynch in dairy herds-differences between primiparous and multiparous cows. Anim. Reprod. Sci. 2004, 81, 1-11.
• 13.Zduńczyk S., Janowski T., Raś M.: Aktualne poglądy na zjawisko cichej rui u krów. Medycyna Wet. 2005, 61, 726-729.