Milk Production and Reproductive Performance of Retained and Culled Cows in a Large Holstein Herd in Egypt

Fahim, N. H.; Amin, Ahmed Hassan; Sadek, R. R.

doi:10.54203/scil.2021.wvj61

Cited by 2 publications

(2 citation statements)

References 23 publications

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“…Rilanto et al (2020) further observed 26.24% culling rate in Estonian dairy cows. High overall culling rate per lactation with 61.1% was observed by Fahim et al (2021). Lower overall culling rate of 17.38% in Kankrej cattle was reported by Madhavatar et al (2019).…”

Section: Resultsmentioning

confidence: 69%

Analysis of Jersey crossbred cows for lactation specific demographic parameters

LALMUANSANGI

Roy

Rahman

et al. 2022

Indian J of Anim Sci

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In present study, lactation specific demographic analysis was carried out on 1728 records of Jersey crossbred cows maintained at Eastern Regional Station (ERS), ICAR-NDRI, Kalyani, West Bengal over a period of 40 years (1980-2019). The survival rate was 79% in first lactation and followed a decreasing trend with lactation order. The stayability for first lactation was one; decreased in subsequent lactations. Stayability was noted as 0.365, 0.052 and 0.015 at fourth, eighth and eleventh lactation respectively, indicating that only 36.5, 5.2 and 1.5 % of cows remained in the herd in these lactation period. Approximately 79% of total cows present in the herd belonged to first 4 lactations while less than 3% cows belonged to 9 and above parities indicating abundance of younger cows. The expected herd life was observed as 2.75, 2.222 and 1.721 in first, third and fifth lactation and decreased with parity order. The probability of cow being lost from the herd after first lactation was 21%. The present study concluded that the herd comprised of younger cows with a required annual replacement rate of 21% to keep the herd size constant.

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Section: Resultsmentioning

confidence: 69%

Analysis of Jersey crossbred cows for lactation specific demographic parameters

LALMUANSANGI

Roy

Rahman

et al. 2022

Indian J of Anim Sci

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“…The lowest values of longevity and PL were recorded by Cows cows culled due to endemic diseases recorded the lowest values of longevity, therefore they recorded the lowest LTMY in this study (28809 kg). This is because the highest proportion of these cows were culled in the first lactation [27] and PL, they were lesser than the overall mean by 5.8% and 7.8%. So they recorded the lowest LTMY (28809 kg) which was lower than the overall mean by 4.6%.…”

Section: All Of These Current Resultsfindings Reflect the Risk Of Keeping Cows Having Reproductivementioning

confidence: 93%

Effects of first-lactation milk production and culling reasons on lifetime performance traits of Holstein cows culled from an intensive system in Egypt

Sadek¹,

Fahim²

2022

Anim Biosci

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Objective: This study investigates the effects of first-lactation milk production and culling reasons on the lifetime performance traits of Holstein cows culled from an intensive system in Egypt. Methods:Complete lactation records of 12209 for 4522 second-sixth parity cows culled during 2008-2019 were enrolled in this study.Results: Means of days in milk(DIM), lifetime total milk yield(LTMY), lifetime daily milk yield(LDMY), productive life(PL), longevity, number of services/conception(NSPC), days open(DO) and calving interval(CI) were 371 days, 30223 kg,13.5 kg, 38 months, 68 months, 3.6, 169 days and 437 days, respectively. The first-lactation milk production (FMY) affected all the lifetime performance traits significantly (p<0.0001). Cows that produced higher FMY had higher both LTMY and LDMY. Cows of FMY>12000 kg had the longest both PL and longevity. With the increase of FMY, the values of NSPC, DO and CI increased. Culling reasons significantly affected all lifetime performance traits (P<0.0001). Cows culled due to reproductive problems had the greatest longevity whereas those culled due to endemic diseases recorded the lowest. The highest LDMY was recorded by cows culled due to metabolic disorders while the highest LTMY was recorded by cows culled due to lameness. Cows culled as a result of reproductive problems, metabolic disorders or mastitis recorded higher values of NSPC, DO and CI than those culled due to other reasons. Conclusion:The higher the first-lactation milk production, the higher the productive performance and the lower the reproductive performance. The performance traits of culled cows A c c e p t e d A r t i c l e 3 differed depending on the reason caused culling. Reasons for culling should be studied through their inter-relationships since one disorder may cause or support the occurrence of others.

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Milk Production and Reproductive Performance of Retained and Culled Cows in a Large Holstein Herd in Egypt

Cited by 2 publications

References 23 publications

Analysis of Jersey crossbred cows for lactation specific demographic parameters

Analysis of Jersey crossbred cows for lactation specific demographic parameters

Effects of first-lactation milk production and culling reasons on lifetime performance traits of Holstein cows culled from an intensive system in Egypt

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