Effect of sexed semen on different production and functional traits in German Holsteins

Diers, Sophie; Heise, Johannes; Krebs, Tony; Groenewold, J.; Tetens, Jens

doi:10.1016/j.vas.2020.100101

Cited by 8 publications

(7 citation statements)

References 40 publications

(71 reference statements)

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“…Deliveries resulting in the birth of a bull calf accounted for 15.9%, including 3.2% stillbirths. In a study by Diers et al [2020], the percentage of heifers born following insemination with conventional semen was 52.7%, compared to 87.0% in the case of sexed semen. Lower ef- fectiveness for sexed semen was obtained in a study by Osada et al [2019], in which the percentage of deliveries resulting in the birth of a heifer was 73.8%.…”

Section: Resultsmentioning

confidence: 95%

Analysis of the Effectiveness of Sexed Semen in a Selected Herd of Dairy Cows

Janus¹,

Sablik²,

Święciło³

2023

Acta Sci. Pol. Zootech.

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Biotechnological methods can be used in dairy cow reproduction to increase reproductive potential and improve economic outcomes of milk production. Biotechnological methods widely used in reproduction include artificial insemination and embryo transfer, and more recently insemination with sexed semen, which makes it possible to control the sex of the offspring. This study presents an analysis of the effectiveness of the use of sexed semen in a selected herd of dairy cows. The results confirmed the effectiveness of sexed semen at increasing births of female calves. Sexed semen was most effective among heifers. In that group the fewest insemination doses were required for conception (1.54), and pregnancy after the first insemination procedure was noted in 52.2% of cases. The values of selected fertility parameters (calving-to-first-service interval, service period, services per conception, and rate of conception after first service) did not deviate significantly from recommended values in cows inseminated with sexed and unsexed semen. Among the group of cows inseminated with sexed semen, fertility parameters were significantly more favourable than in the group inseminated with conventional semen.

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Section: Resultsmentioning

confidence: 95%

Analysis of the Effectiveness of Sexed Semen in a Selected Herd of Dairy Cows

Janus¹,

Sablik²,

Święciło³

2023

Acta Sci. Pol. Zootech.

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“…In our study, cows inseminated with sexed semen had higher milk yields. However, Diers et al (21) reported that the milk yield of cows inseminated with conventional semen was 200 kg higher than cows inseminated with sexed semen. Postpartum body weights of dams giving birth to female calves were higher than giving birth to male calves.…”

Section: Discussionmentioning

confidence: 99%

Effects of Sexed and Conventional Semen Use and Calf Sex on Milk Yield Parameters, Body Weight and Milk Electrical Conductivity in Holstein Cows

Bayril

2023

Dicle Üniversitesi Veteriner Fakültesi Dergisi

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“…In such cases, giving calving assistance may also increase the likelihood of trauma and contamination of the reproductive tract and increase the risk of endometritis infections. Farmers can reduce the risk of dystocia by using sexed semen from sires with calving ease and low percent stillbirths to produce female calves [38].…”

Section: Discussionmentioning

confidence: 99%

Perception of farmers about endometritis prevention and control measures for zero-grazed dairy cows on smallholder farms in Rwanda

et al. 2020

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Background: Endometritis is a prevalent uterine disease in postpartum cows. The disease reduces fertility performance and milk yield, and subsequently, productivity and profitability of dairy farms. The reduction in performance is associated with considerable economic losses on dairy farms. Smallholder farmers are likely to incur considerable economic losses from the disease where they lack knowledge of effective prevention and control measures for the disease. This study used farmer's perspectives to determine the effectiveness of different management interventions (MIs) for endometritis prevention and control on smallholder farms in Rwanda practicing dairy zero-grazing. The best-worst scaling (BWS) choice method was applied that relied on past 1 year recall data obtained from 154 farmers. These farmers were identified through snowball sampling in a cross-sectional study. Results: Of the 20 MIs evaluated, 12 scored highly for effectiveness. The top four most effective are: avoiding sharing equipment with neighbouring farms (45.5%), consulting animal health service provider about disease treatment (31.8%), keeping cows in a clean and dry shed (26.7%), and selecting sires based on calving ease (26.6%). The MIs considered least effective were: maintaining clean transition cow housing (35.1%), removal of fetal membrane immediately after passing (33.1%), disinfecting the equipment used in calving assistance before and after use (32.5%), and selecting sires with low percent stillbirths (29.2%). Conclusion: This study has demonstrated the application of BWS object case method in understanding the MIs that farmers consider are most effective in the prevention and control of endometritis disease in the dairy herds. The MIs are on-farm biosecurity and hygiene, seeking veterinary services for disease treatment and selecting sires for ease of calving. These MIs should be considered for prioritization in extension services and research to continuously improve and enhance their practical application on smallholder dairy farms.

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Effect of sexed semen on different production and functional traits in German Holsteins

Abstract: Highlights Calf sex had an influence on calving ease and dystocia rates. Sexed semen within same calf sex had only minor effects on most traits. Stillbirth rate for the few male calves from semen sexed for females was 30.6%.

Cited by 8 publications

References 40 publications

Analysis of the Effectiveness of Sexed Semen in a Selected Herd of Dairy Cows

Analysis of the Effectiveness of Sexed Semen in a Selected Herd of Dairy Cows

Effects of Sexed and Conventional Semen Use and Calf Sex on Milk Yield Parameters, Body Weight and Milk Electrical Conductivity in Holstein Cows

Perception of farmers about endometritis prevention and control measures for zero-grazed dairy cows on smallholder farms in Rwanda

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