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Oestrous intensity ...
Oestrous intensity is positively associated with reproductive outcome in high-producing dairy cows
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- Garcia, Emanuel (author)
- Swedish University of Agriculture Science
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- Hultgren, Jan (author)
- Swedish University of Agricultural Sciences,Sveriges lantbruksuniversitet,Institutionen för husdjurens miljö och hälsa (HMH),Department of Animal Environment and Health,Swedish University of Agriculture Science
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- Fallman, Pontus (author)
- Swedish University of Agriculture Science
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- Geust, Johanna (author)
- Notctr Viken
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- Algers, Bo (author)
- Swedish University of Agricultural Sciences,Sveriges lantbruksuniversitet,Institutionen för husdjurens miljö och hälsa (HMH),Department of Animal Environment and Health,Swedish University of Agriculture Science
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- Stilwell, George (author)
- University Tecn Lisbon
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- Gunnarsson, Stefan (author)
- Swedish University of Agricultural Sciences,Sveriges lantbruksuniversitet,Institutionen för husdjurens miljö och hälsa (HMH),Department of Animal Environment and Health,Swedish University of Agriculture Science
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- Rodriguez-Martinez, Heriberto (author)
- Linköpings universitet,Hälsouniversitetet,Medicinsk genetik
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(creator_code:org_t)
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- Elsevier Science B.V. Amsterdam, 2011
- 2011
- English.
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In: Livestock Science. - : Elsevier Science B.V. Amsterdam. - 1871-1413 .- 1878-0490. ; 139:3, s. 191-195
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Abstract
Subject headings
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- his study tested whether strong oestrus symptoms are linked to low lameness score, acceptable pregnancy and calving rates in heifers and first parity dairy cows with a high genetic potential for milk production. In a single Swedish nucleus herd for genetic selection and testing, oestrous intensity was determined by detailed observations of 67 females, balanced in terms of age and breed (37 heifers and 30 first-parity cows; 32 Swedish Red cows and 35 Swedish Holsteins). Animals were inseminated with semen of proven quality on the day of detected oestrus. Pregnancy was diagnosed on day 50 by trans-rectal palpation. More heifers than cows exhibited a strong standing oestrus (46 vs. 10%, Pandlt;0.05). The pregnancy rate at day 50 was higher among heifers than cows (72 vs. 37%. Pandlt;0.01), as well as the calving rate (64 vs. 33%, Pandlt;0.05). Standing oestrus was associated with 4.6 to 4.8-fold higher odds of pregnancy and calving, compared to weaker or solely secondary oestrous signs. Lameness decreased the odds of pregnancy 5.1 times and of calving 3.5 times, but no significant association between lameness and oestrus intensity was found. In conclusion, intensive oestrus signalling and non-lameness relate to high reproductive performance in high-producing dairy cattle.
Subject headings
- LANTBRUKSVETENSKAPER -- Husdjursvetenskap (hsv//swe)
- AGRICULTURAL SCIENCES -- Animal and Dairy Sience (hsv//eng)
- LANTBRUKSVETENSKAPER -- Veterinärmedicin (hsv//swe)
- AGRICULTURAL SCIENCES -- Veterinary Science (hsv//eng)
Keyword
- Oestrous intensity
- Lameness
- Fertility
- Dairy cattle
- MEDICINE
- MEDICIN
Publication and Content Type
- ref (subject category)
- art (subject category)
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