Relationship of Dietary Crude Protein to Composition of Uterine Secretions and Blood in High-Producing Postpartum Dairy Cows

Jordan, Ellen R.; Chapman, T. E.; Holtan, D. W.; Swanson, L. V.

doi:10.3168/jds.s0022-0302(83)82023-2

Cited by 127 publications

(76 citation statements)

References 36 publications

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“…It is also possible that urea may have influenced fertility in the present study by negative actions at the ovaries. In this regard, serum urea levels > 5.83 mmol·L -1 caused a reduction in progesterone secretion in dairy cows and this was associated with a decline in pregnancy [19]. The blood levels of urea observed in the present study were relatively high compared with previous reports in buffaloes and cattle [5,20] which could be explained by the surplus dietary protein provided in the present study.…”

Section: Discussioncontrasting

confidence: 55%

Relationship of body condition score and blood urea and ammonia to pregnancy in Italian Mediterranean buffaloes

Campanile¹,

Neglia²,

Palo³

et al. 2006

Reprod. Nutr. Dev.

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-The relationship of body condition score (BCS) and blood urea and ammonia to pregnancy outcome was examined in Italian Mediterranean Buffalo cows mated by AI. The study was conducted on 150 buffaloes at 145 ± 83 days in milk that were fed a diet comprising 14.8% crude protein, 0.9 milk forage units·kg -1 dry matter and a non-structural carbohydrate/crude protein ratio of 2.14. The stage of the oestrous cycle was synchronised by the Ovsynch-TAI programme and blood urea and ammonia levels were assessed on the day of AI. Energy corrected milk (ECM) production and BCS were recorded bi-weekly. The pregnancy risk was 46.7% and was slightly lower in buffaloes with BCS < 6.0 and BCS > 7.5. There were no significant differences in ECM, urea and ammonia between pregnant and non-pregnant buffaloes. However, pregnancy outcome was higher (P = 0.02) in buffaloes with blood urea < 6.83 mmol·L -1 . The likelihood of pregnancy for buffaloes with low urea blood level was 2.6 greater than for high urea level and exposure to a high urea level lowered the probability of pregnancy by about 0.25. The findings indicate that buffaloes are similar to cattle and increased blood levels of urea are associated with reduced fertility when animals are mated by AI. buffalo / BCS / urea / ammonia / pregnancy

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Section: Discussioncontrasting

confidence: 55%

Relationship of body condition score and blood urea and ammonia to pregnancy in Italian Mediterranean buffaloes

Campanile¹,

Neglia²,

Palo³

et al. 2006

Reprod. Nutr. Dev.

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“…The latter author attributed this result to the fact that urea peaks 4 to 8 h after feeding [38]. Ammonia values in buffalo cows were higher than those reported by Elrod and Butler [7] in dairy cows, and McEvoy et al [39] in sheep, and lower compared with the results of Jordan et al [11] and Garcia-Bojalil [40] in cattle.…”

Section: Discussioncontrasting

confidence: 54%

“…Overfeeding proteins has been associated with a decline in fertility in most [6][7][8][9], but not all [10] studies. Jordan et al [11] found an increase in urea-nitrogen (N) concentration in the uterine secretions and plasma of cows fed 23% crude protein (CP). Elrod et al [7] showed that an excess of either digestible (RDP) or indigestible (RUP) protein, in the rumen increases BU and alters uterine pH to a similar degree, interfering with the normal inductive effects of progesterone on the microenvironment of the uterus, thereby providing suboptimal conditions to support embryo development.…”

Section: Introductionmentioning

confidence: 99%

Influence of rumen protein degradability on productive and reproductive performance in buffalo cows

Campanile¹,

Palo²,

Infascelli³

et al. 2003

Reprod. Nutr. Dev.

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-The present study aimed to ascertain the influence of crude protein (CP) digestibility in the rumen on the quantity and quality of milk production and reproductive performance, blood (BU) and milk (MU) urea, haematological profile and vaginal mucus urea, ammonia and potassium of buffalo cows. Lactating buffaloes (n = 84), 60 days in milk, were randomly subdivided into Group C (control, n = 42) and Group T (fed a diet supplemented with Aspergillus oryzae, n = 42). In three fistulated buffalo, the diet supplemented with Aspergillus oryzae showed a decrease (P < 0.01) in protein digestibility in the rumen (79.3 vs. 45.9%). No differences were registered in productive performance. Nine buffaloes not in oestrus during the dietary treatment (Groups T1 and C1), 30 days in milk, were used to study the haematological profile and to determine milk urea and ammonia in the vaginal mucus. The animals in Group T1 had higher ammonia values in the blood (P < 0.01) but not in the vaginal mucus than Group C1. A relationship was found between MU and BU. MU was influenced by CP intake and dry matter intake. No differences between the treatments were observed in reproductive performance and the conception rate and calving interval were 37.9% and 41.4% (90 trial-day) and 449 and 419 days respectively in Groups T and C. Reproductive performance was not influenced by high levels of BU nor by blood ammonia levels, although the latter were higher in the group fed the diet supplemented with Aspergillus oryzae.buffalo cow / protein digestibility in the rumen / blood / milk / vaginal mucus

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“…The high plasma level of urea nitrogen may be the cause of production of abnormal oocytes in RB cows (Kurykin et al, 2011). The elevated plasma urea nitrogen can change the uterine fluid composition, lowering the uterine pH, and reducing the conception rates (Butler et al, 1996;Jordan et al, 1983). This elevated plasma urea nitrogen level may be caused by the high protein content in the diet.…”

Section: Resultsmentioning

confidence: 99%

Blood biochemical profile of Sudanese crossbred repeat breeder cows

Ahmed¹,

Ahmed²,

Frah³

et al. 2017

Afr. J. Biotechnol.

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Repeat breeder (RB) is a cow that fails to conceive from three or more successive insemination, but with normal estrus and absence of detectable clinical abnormalities. It is one of the major problems in dairy production. In the present study, the plasma biochemistry of Sudanese crossbred RB cows was examined. Plasma glucose, total cholesterol (TC), triacylglycerol (TG), total protein (TP) and urea nitrogen were estimated with the spectrophotometer while the plasma levels of Cu, Zn, Fe, and Mn were estimated using the atomic absorption spectroscopy. The results indicate the plasma levels of glucose, Zn, Mn and Fe of RB were significantly lower (P < 0.05) than that of the normal cyclic (NC) cows. Moreover, the plasma level of urea nitrogen of RB was significantly higher (P < 0.05) than that of the NC cows. According to the obtained results, it can be concluded that correcting the plasma glucose, Zn, Mn and Fe as well as lowering the urea nitrogen may be a part of an effective strategy for treatment of repeat breeding syndrome in Sudanese crossbred cows.

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Relationship of Dietary Crude Protein to Composition of Uterine Secretions and Blood in High-Producing Postpartum Dairy Cows

Cited by 127 publications

References 36 publications

Relationship of body condition score and blood urea and ammonia to pregnancy in Italian Mediterranean buffaloes

Relationship of body condition score and blood urea and ammonia to pregnancy in Italian Mediterranean buffaloes

Influence of rumen protein degradability on productive and reproductive performance in buffalo cows

Blood biochemical profile of Sudanese crossbred repeat breeder cows

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