Reproductive performance by dairy cows fed supplemental chromium-methionine (Cr-Met) in transition period

2012 ◽  
Vol 11 (93) ◽  
pp. 16029-16033 ◽  
Author(s):  
Khalili M ◽  
Forooz A D ◽  
eh ◽  
Toghyani M ◽  
Ghalamkari Gh
Keyword(s):  
Dairy Cows ◽  
Reproductive Performance ◽  
Transition Period ◽  
Chromium Methionine

scholarly journals Relationship between body condition score, blood metabolites and oxidative stress in transition period and reproductive performance of dairy cows

2020 ◽  
Vol 71 (1) ◽  
pp. 2041
Author(s):  
H. E. ÇOLAKOĞLU ◽  
M. O. YAZLIK ◽  
U. KAYA ◽  
S. KURT ◽  
R. BAYRAMOĞLU ◽  
...  
Keyword(s):  
Oxidative Stress ◽  
Dairy Cows ◽  
Body Condition ◽  
Reproductive Performance ◽  
Transition Period ◽  
Body Condition Score ◽  
Blood Metabolites ◽  
Reproductive Parameters ◽  
Oxidative Balance ◽  
Condition Score

The aim of the current study was to investigate the relationship between prepartum body condition score (BCS), blood metabolites (Glucose, beta-hydroxybutyrate; BHB), oxidative stress (Malondialdehyde; MDA, Glutathione peroxidase; GSH-Px) in transition period and some reproductive parameters in Holstein dairy cows. Fifty cows were divided into two groups [low-BCS = 2.75-3.0 (n=25); adequate-BCS = 3.25-3.75 (n=25)] according to BCS on the 21st day before expected calving. BCS was also recorded at 0 and +21 days after calving. Blood samples collected at -21, 0 and +21 days from calving for MDA and GSH-Px analysis as well as at -21, +14 and +21 days of postpartum for glucose and BHB. Data on reproductive parameters obtained from farm records were also collected. MDA concentrations were higher in group of low-BCS compared to group of adequate-BCS at -21 and 0 d related to calving (p<0.05). GSH-Px activity was lower in group of low-BCS than adequate one during the transition period (p<0.05). Low-BCS group also showed higher concentrations of BHB at +14 and +21 days after calving. During the transition period, low-BCS group had lower glucose concentrations compared to adequate one (p<0.05). Adequate-BCS group of cows showed shorter intervals of calving to first estrus (p<0.01) and calving to conception (p<0.01). In conclusion, cows with lower BCS at the prepartum period had worse metabolic and oxidative balance during the transition period. This situation also was associated with worse reproductive performance in cows.

scholarly journals Efficacy of Different Drenching Regimens of Gluconeogenic Precursors during Transition Period on Body Condition Score, Production, Reproductive Performance, Subclinical Ketosis and Economics of Dairy Cows

Animals ◽  
2020 ◽  
Vol 10 (6) ◽  
pp. 937
Author(s):  
Nagwa I. El-Kasrawy ◽  
Ayman A. Swelum ◽  
Mervat A. Abdel-Latif ◽  
Abd El-Wahab A. Alsenosy ◽  
Noha A. Beder ◽  
...  
Keyword(s):  
Dairy Cows ◽  
Body Condition ◽  
Reproductive Performance ◽  
Transition Period ◽  
Body Condition Score ◽  
Control Group ◽  
Subclinical Ketosis ◽  
Treatment Groups ◽  
Condition Score ◽  
Feed Costs

A total of 108 Holstein cows were used to evaluate the effect of drenching propylene glycol (PG) either individually or in combination with glycerol (G) on body condition score (BCS), production, reproductive performance, protection against subclinical ketosis and economic benefit of dairy cows during the transition period. The six groups (n = 18/group) were; Control group, cows received no treatment; PG300, cows were drenched 300 mL PG for 7 days pre-expected day of calving and 21 days post-calving; PG400, cows were drenched 400 mL PG for 7 days pre-and 7 days post-calving; PG500, cows were drenched 500 mL PG for 10 days pre-and 10 days post-calving; GPG150, cows were drenched a mixture of 150 mL G and 150 mL PG for 21 days pre-and 21 days post-calving; GPG250, cows were drenched a mixture of 250 mL G and 250 mL PG for 21 days pre-and 21 days post-calving. BCS at 30 days in milk (DIM) was significantly higher in all treated groups in comparison to the control one and the best values were observed in GPG250, GPG150 and PG500 groups. Lactation length (LL) was significantly (p < 0.001) shorter in GPG250, GPG150 and PG500 groups than control group. There was a significant increment in 305 milk yield (p < 0.001) and average daily milk yield (p < 0.001) in GPG250 and PG500 groups than other groups except for PG300 with the lowest values for control and PG400. Cows in all treatment groups were observed in heat and conceived earlier as well as had shorter open days and calving interval durations (p < 0.001) and low number of services per conception (p = 0.004) compared to control group with better results for PG500 and GPG250 groups. BHB level and percentage of cows suffered from subclinical ketosis at 7 DIM was significantly lower in GPG250, GPG150 and PG500 groups than control group. Cows in treatment groups had a significantly higher glucose level (p = 0.006) compared to control group. Regarding to economics, the control group showed the highest feed costs, insemination costs and total costs per animal. Additionally, control and PG400 groups had the highest cost per kilogram of milk from total and feed costs compared to other cows. PG300, PG500 and GPG250 groups recorded a greater net return and income over feed cost (IOFC). In conclusion, the continuous drenching of propylene glycol either individually or in combination with glycerol regimens for long duration (PG300, PG500, GPG150, GPG250) during the transition period of dairy cows may reduce the incidence of subclinical ketosis and consequently improve milk production, reproduction and economics compared to drenching for short duration (PG400).

An examination of the effects of level of concentrate supplementation of dairy cattle in late gestation on subsequent reproductive performance

2000 ◽  
Vol 2000 ◽  
pp. 114-114
Author(s):  
T.W.J. Keady ◽  
C.S. Mayne ◽  
D A Fitzpatrick ◽  
M.A. McCoy
Keyword(s):  
Dairy Cows ◽  
Reproductive Performance ◽  
Dairy Cow ◽  
Transition Period ◽  
Late Gestation ◽  
Recent Past ◽  
Concentrate Supplementation ◽  
Foetal Growth ◽  
Nutrient Demand ◽  
Protein Nutrition

The transition period of the dairy cow is physiologically and nutritionally stressful as feed intake is reduced whilst nutrient demand for the support of foetal growth and initiation of milk synthesis are increased. Also during this period the diet of dairy cows changes from being predominantly forage, often of mediocre quality, to a diet often containing high levels of concentrate and high quality forage or mixture of forages. In the recent past nutritional management of the dairy cows during the transition period has centred on protein nutrition. While some studies have shown responses to milk yield or composition from protein nutrition in late gestation, many have shown no response. The objective of the present study was to examine the effects of level of concentrate in late gestation on subsequent reproductive performance. The effects of treatment on animal performance have been presented by Keady et al. (1999).

scholarly journals MDA and GSH-Px activity in transition dairy cows under seasonal variations and their relationship with reproductive performance

2017 ◽  
Vol 61 (4) ◽  
pp. 497-502 ◽  
Author(s):  
Hatice Esra Colakoglu ◽  
Murat Onur Yazlik ◽  
Ufuk Kaya ◽  
Ekrem Cagatay Colakoglu ◽  
Serdal Kurt ◽  
...  
Keyword(s):  
Dairy Cows ◽  
Negative Correlation ◽  
Reproductive Performance ◽  
Seasonal Variations ◽  
Transition Period ◽  
Jugular Vein ◽  
Reproductive Parameters ◽  
Transition Dairy Cows ◽  
The Relationship ◽  
Over Time

AbstractIntroduction:The purpose of the current study was to evaluate the blood glutathione peroxidase (GSH-Px) and malondialdehyde (MDA) levels under seasonal variations in dairy cows during transition period, and to assess the relationship between chosen reproductive parameters, GSH-Px, and MDA.Material and Methods:Holstein cows calving in January were assigned into winter group (n = 42), while cows calving in August were assigned into summer group (n = 42). Blood samples were collected from the jugular vein 21, 14, and 7 days before calving, at calving (0 day), and 7, 14, and 21 days after calving. Reproductive parameters obtained from farm records were evaluated.Results:In both groups of cows, GSH-Px activity decreased from 21 days before calving to day 0, and it gradually continued to increase until 21 days after calving. GSH-Px activity was higher in winter group compared to summer group during the transition period (P < 0.05). MDA levels in both groups increased over time starting from 21 days before calving to 0 day, but it gradually decreased thereafter. MDA levels were higher in summer group compared to winter group during the transition periods (P < 0.05). Summer group of cows showed higher intervals of calving-to-oestrus, calving-to-conception, and higher insemination index (P < 0.01). Negative correlation was recorded between GSH-Px and MDA during all examination days (P < 0.01). MDA levels correlated with calving to conception interval on day 21 before calving and day 0 (P < 0.01) and insemination index on day 0 and 21 days after calving (P < 0.01). GSH-Px activity was negatively correlated with calving to conception interval on day 21 before calving, day 0, and 21 days (P < 0.01) after calving. Negative correlation on day 21 before calving and day 0 was also determined between GSH-Px and insemination index (P < 0.01).Conclusion:This study showed that blood oxidant and antioxidant levels have affected the fertility parameters in cows under seasonal variations.

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