Preliminary study on the impact of Bovine Tuberculosis on the reproductive efficiency and productivity of Holstein dairy cows in Central Ethiopia.

2011 ◽  
Vol 58 (3) ◽  
Author(s):  
G Ameni ◽  
S Bekele ◽  
T Tolosa
Keyword(s):  
Dairy Cows ◽  
Bovine Tuberculosis ◽  
Reproductive Efficiency ◽  
Central Ethiopia ◽  
Preliminary Study ◽  
The Impact ◽  
Efficiency And Productivity ◽  
Holstein Dairy Cows

Effect of different calving classes in the first calving on subsequent milk production in Holstein dairy cows

2009 ◽  
Vol 2009 ◽  
pp. 132-132
Author(s):  
A Heravi Moussavi ◽  
M Danesh Mesgaran
Keyword(s):  
Risk Factor ◽  
Dairy Cattle ◽  
Dairy Cows ◽  
Milk Production ◽  
Pregnancy Loss ◽  
Dairy Farms ◽  
Reproductive Efficiency ◽  
The Impact ◽  
Holstein Dairy Cows

Revenue from dairy farms is directly dependent upon reproductive efficiency because it affects milk production and the number of calves born (Thurmond et al., 1990). Pregnancy loss can have devastating effects on economical success in dairy farms. Normal annual abortion risks have been cited to be 3–5%, once cows are beyond 42 days of pregnancy (Hovingh, 2002), or similarly an observable 2–5% in most dairies (Kirk, 2003). Although, there is little or no indication that milk production is a risk factor for increased pregnancy losses in dairy cattle (Santos et al., 2004), there is little information on the effect of pregnancy losses on subsequent milk production. The aim of this study was to evaluate the impact of different calving classes including eutocia, dystocia, stillbirth and abortion in the first calving on subsequent milk production in Iranian Holstein dairy cows.

Effect of first 60-day cumulative milk yield on days open in Holstein dairy cows in Iran

2007 ◽  
Vol 2007 ◽  
pp. 148-148
Author(s):  
A. Heravi Moussavi ◽  
M. Danesh Mesgaran ◽  
T. Vafa
Keyword(s):  
Dairy Cattle ◽  
Dairy Cows ◽  
Milk Production ◽  
Milk Yield ◽  
Dairy Farm ◽  
Reproductive Efficiency ◽  
Root Cause ◽  
Principal Factors ◽  
Days Open ◽  
Holstein Dairy Cows

Reproduction and milk production are the principal factors that are influencing dairy farm profitability. The dairy industry in Iran has changed dramatically in the last decade. The shift toward more productive cows and larger herds in Iran is associated with a decrease reproductive efficiency (Heravi Moussavi et al., 2004). Increased knowledge about the principal causes of reduced fertility is essential. The root cause of the declining fertility is probably a combination of a variety of physiological and management factors that have an additive effect on reproductive efficiency. Dairy cattle are inseminated and pregnancy is established while dairy cows are lactating. Based on the analyses of large datasets, there is clearly an antagonistic relationship between milk production and reproduction in dairy cattle (Lucy, 2001). It was shown that the hazard ratio for cumulative first 60-day milk yield and conception in high producer cows was 8 percent less than the others and also high milk yield was a risk factor for several reproductive disorders (Grohn and Rajala-Schultz, 2000). The objective of this study was to evaluate the effect of first 60-day cumulative milk yield on days open in Iranian Holstein dairy cows.

scholarly journals The Impact of Season, Parity, and Volume of Colostrum on Holstein Dairy Cows Colostrum Composition

2017 ◽  
Vol 08 (07) ◽  
pp. 572-581
Author(s):  
Soheila Zarei ◽  
Gholam Reza Ghorbani ◽  
Mohammad Khorvash ◽  
O'Brien Martin ◽  
Amir Hossein Mahdavi ◽  
...  
Keyword(s):  
Dairy Cows ◽  
The Impact ◽  
Holstein Dairy Cows

scholarly journals Impact of calving interval on milk yield and longevity of primiparous Estonian Holstein cows

2020 ◽  
Vol 65 (No. 10) ◽  
pp. 365-372
Author(s):  
Aadi Remmik ◽  
Rando Värnik ◽  
Kalle Kask
Keyword(s):  
Dairy Cows ◽  
Milk Yield ◽  
Interval Length ◽  
Holstein Cows ◽  
Calving Interval ◽  
Productive Life ◽  
The Impact ◽  
Holstein Dairy Cows

Data about 4 474 high-yielding Estonian Holstein dairy cows from 14 herds was analysed for the impact of the first calving interval length (CI<sub>1</sub>) on milk yield (MY) and lactation persistency. The results show that cows with CI<sub>1</sub> shorter than 12 months have on average 2 345 kg lower milk yield in the first 1 000 days of productive lifetime than those with CI<sub>1</sub> between 14 and 16 months. This is caused by lower MY in both the first and the second lactation as well as higher probability of being culled before reaching 1 000 days of productive life.

scholarly journals EFISIENSI REPRODUKSI SAPI PERAH FRIESIAN HOLSTEIN DI WILAYAH KERJA KOPERASI PETERNAKAN BANDUNG SELATAN (The Reproductive Efficiency of The Friesian Holstein Dairy Cows in The Area of South Bandung Livestock Cooperative)

2020 ◽  
Vol 4 (1) ◽  
Author(s):  
Fahmi Reza Fauzi ◽  
Tendy Kusmayadi ◽  
Tati Rohayati ◽  
Titin Nurhayatin ◽  
Ibrahim Hadist
Keyword(s):  
Dairy Cows ◽  
Research Method ◽  
Secondary Data ◽  
Conception Rate ◽  
Survey Method ◽  
Reproductive Efficiency ◽  
Calving Interval ◽  
Data Sampling ◽  
The South ◽  
Holstein Dairy Cows

Abstrak Penelitian ini bertujuan untuk mengetahui tingkat efisiensi reproduksi melalui pengamatan angka Service per Conception (S/C), angka Conception Rate (CR) dan angka Calving Interval (CI) pada sapi perah Friesian Holstein (FH) di wilayah kerja Koperasi Peternakan Bandung Selatan. Metode penelitian yang digunakan adalah metode survey, dengan pengambilan data bersumber dari data sekunder dan primer. Pengambilan data primer menggunakan kuesioner kepada 100 peternak di Wilayah Kerja Koperasi Peternakan Bandung Selatan (KPBS), sedangkan data sekunder diambil dari data rekording di kantor KPBS dengan pengambilan data masing-masing 10% dari populasi yaitu laktasi 2 sebanyak 144 ekor dan laktasi 3 sebanyak 250 ekor. Hasil penelitian menunjukkan Service per Conception (S/C) ternak laktasi 2 adalah 1.6 dan laktasi 3 adalah 1.8, Conception Rate (CR) ternak laktasi 2 adalah 58% dan laktasi 3 adalah 46% dan Calving Interval (CI) ternak laktasi 2 rata-rata adalah 385 hari dan ternak laktasi 3 rata-rata adalah 389 hari berkisar 12-13 bulan. Kesimpulan dari penelitian ini bahwa efisiensi reproduksi sapi perah Friesian Holstein (FH) di Wilayah Kerja Koperasi Peternakan Bandung Selatan dapat dikategorikan baik. Kata kunci: Service_per_Conception, Conception_Rate, Calving_Interval, Friesian Abstract This research aim to know the level of reproductive efficiency through the observation number Service per Conception (S/C), the Conception Rate (CR) and Calving Interval (CI) on Friesian Holstein Dairy Cows in the area of South Bandung Livestock Cooperative. The research method used Survey method, with the primer and secondary data. The primer data retrievaled from 100 breeders in South Bandung Livestock Cooperative and secondary data sampling from the recording lactation 2 as many as 144 herd and lactation 3 as many as 250 herd. Result of the research showed the Service Per Conception (S/C) of the second lactation is 1.6 and third lactation is 1.8, Conception Rate (CR) is 58% on the second lactation and 46% on third lactation and Calving Interval (CI) of lactation 2 average is 385 days and lactation 3 average is 389 days revolved around 12-13 month. The conclusions of this study that ther reproductive efficiency of the Friesian Holstein Dairy Cows in the area of the South Bandung Livestock Cooperative can be categorized good. Keywords: Service_per_Conception, Conception_Rate, Calving_Interval, Friesian_ Holstein

scholarly journals RELATIONSHIP BETWEEN RETAINED PLACENTA AND BODY CONDITION CHANGES DURING THE TRANSITION PERIOD IN HOLSTEIN DAIRY COWS IN NORTH-EASTERN ALGERIA

SPERMOVA ◽  
2021 ◽  
Vol 11 (1) ◽  
pp. 17-23
Author(s):  
Ahmed Hadef ◽  
◽  
Kamel Miroud ◽  
Hocine Sebihi
Keyword(s):  
Dairy Cows ◽  
Body Fat ◽  
Body Condition ◽  
Transition Period ◽  
The Body ◽  
Retained Placenta ◽  
North Eastern ◽  
Eastern Algeria ◽  
The Impact ◽  
Holstein Dairy Cows

Retained placenta (RP) is a common complication of bovine parturition. It is a multifactorial reproductive disorder that predisposes to infection and hence, to infertility. The impact of body condition changes during the transition period on the risk of RP appearance was evaluated in 12 Holstein dairy cows calving from October to January in north-eastern Algeria. The animals were body condition scored (BCS) 3 weeks antepartum and two weeks postpartum to assess the peripartum body fat loss (BCS loss). The statistical analysis involving variables related to BCS and parity was performed using the principal component analysis (PCA). An RP critical occurrence of 41.66% exceeding significantly the threshold prevalence of 10% (p<0.05) was recorded. This could be related to the BCS loss that exceeded one unit over the transition period (r=0.84, p<0.01), expressing the high body fat mobilisation in response to stressor factors such as negative energy balance, feed availability and climatic condition. Scoring the body condition, particularly around the peripartum, may serve as a tool to monitor the risk factors related to the energetic status of dairy cows.

scholarly journals Metabolomics Approach Explore Diagnostic Biomarkers and Metabolic Changes in Heat-Stressed Dairy Cows

Animals ◽  
2020 ◽  
Vol 10 (10) ◽  
pp. 1741
Author(s):  
Shuangming Yue ◽  
Siyan Ding ◽  
Jia Zhou ◽  
Chao Yang ◽  
Xiaofei Hu ◽  
...  
Keyword(s):  
Blood Plasma ◽  
Dairy Cows ◽  
Milk Production ◽  
Low Density Lipoprotein ◽  
Plasma Concentrations ◽  
Density Lipoprotein ◽  
Plasma Metabolites ◽  
Low Density ◽  
The Impact ◽  
Holstein Dairy Cows

In the present experiment, we investigated the impact of heat stress (HS) on physiological parameters, dry matter intake, milk production, the metabolome of milk, and blood plasma in lactating Holstein dairy cows. For this purpose, 20 Holstein lactating cows were distributed in two groups in such a way that each group had 10 cows. A group of 10 cows was reared in HS conditions, while the other group of 10 cows was reared in the thermoneutral zone. The results of the experiment showed that cows subjected to HS had higher respiration rates (p < 0.01) and greater rectal temperature (p < 0.01). Results of milk production and composition explored that HS lowered milk production (p < 0.01) and milk protein percentage (p < 0.05) than cows raised in a thermoneutral place. Furthermore, HS increased the concentrations of N-acetyl glycoprotein, scyllo-inositol, choline, and pyridoxamine in milk, while HS decreased the concentrations of O-acetyl glycoprotein, glycerophosphorylcholine, citrate, and methyl phosphate in milk. Moreover, HS enhanced plasma concentrations of alanine, glucose, glutamate, urea, 1-methylhistidine, histidine, and formate in cows, while the plasma concentration of low-density lipoprotein, very-low-density lipoprotein, leucine, lipid, and 3-hydroxybutyrate decreased due to HS. Based on the findings of the current research, it is concluded that HS alters the milk and blood plasma metabolites of lactating Holstein dairy cows. Overall, in the current experiment, HS altered eight metabolites in milk and twelve metabolites in the plasma of lactating Holstein dairy cows. Furthermore, the current study explored that these metabolites were mainly involved in proteolysis, gluconeogenesis, and milk fatty acid synthesis and could be potential biomarkers for dairy cows undergoing HS.

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