Document Detail

Association between energy status early postpartum and subsequent embryonic mortality in high-yielding recipient cows.
MedLine Citation:
PMID:  22515687     Owner:  NLM     Status:  In-Data-Review    
High-yielding Holstein-Friesian recipients (n = 43) were used in order to investigate the relation between energy balance status during the early postpartum period and subsequent embryonic mortality after transferring good-quality frozen embryos. Blood samples were collected during the second, third, fourth, fifth, sixth and seventh weeks postpartum in order to measure energy status indicators. These indicators include β hydroxyl butyric acid (BHBA), non-esterified fatty acid (NEFA), total cholesterol (T-chol), glucose and blood urea nitrogen (BUN). Moreover, body condition scores (BCS) were assessed during the same period. Pregnancy diagnosis by ultrasonography at the 28th day postestrus and embryo viability was ascertained until 45 days postestrus in order to detect late embryonic mortality (LEM). The pregnancy rate on day 28 was 44.2% (19/43); however, five cows (11.6%) experienced LEM by day 45. Based on the non-return rate at day 24, non-pregnant animals, as diagnosed by ultrasonography, were allocated into animals with longer estrus intervals than 24 days (32.5%; mid-embryonic mortality (MEM) group) and animals returning to estrus by day 24 postestrus (23.5%; early embryonic mortality (EEM) group). At week 5 postpartum, BCS was significantly (P < 0.05) lower in the LEM group than that of pregnant (PREG), EEM and MEM groups. NEFA was significantly higher in animals that experienced LEM (LEM group) at week 7 postpartum (289.6 ± 47.0 µEq/L; P < 0.01) than that of PREG (196.8 ± 16.0 µEq/L), EEM (157.2 ± 18.6 µEq/L) and MEM groups (191.5 ± 14.4 µEq/L). In conclusion, lower BCS at week 5 postpartum and higher NEFAs at week 7 postpartum may be associated with subsequent LEM in high-yielding recipient cows.
Waleed Senosy; Alaa Eldin Zain; Abdel-Razek Khalifa Abdel-Razek; Michiko Uchiza; Nanae Tameoka; Yoshiaki Izaike; Takeshi Osawa
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Publication Detail:
Type:  Journal Article     Date:  2011-10-18
Journal Detail:
Title:  Animal science journal = Nihon chikusan Gakkaihō     Volume:  83     ISSN:  1740-0929     ISO Abbreviation:  Anim. Sci. J.     Publication Date:  2012 Apr 
Date Detail:
Created Date:  2012-04-20     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  100956805     Medline TA:  Anim Sci J     Country:  Australia    
Other Details:
Languages:  eng     Pagination:  284-90     Citation Subset:  IM    
Copyright Information:
© 2011 The Authors. Animal Science Journal © 2011 Japanese Society of Animal Science.
Department of Theriogenology, Faculty of Veterinary Medicine, Assiut University, Assiut, Egypt National Livestock Breeding Center, Iwate Station Laboratory of Theriogenology, Iwate University, Morioka, Japan.
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