Effect of sexed semen on different production and functional traits in German Holsteins.
(C_F), conventional semen × female calves
(C_M), conventional semen × male calves
(S_F), sexed semen × female calves
(S_M), sexed semen × male calves
Calf sex
Heifer
Sexed semen
Stillbirth
Journal
Veterinary and animal science
ISSN: 2451-943X
Titre abrégé: Vet Anim Sci
Pays: Netherlands
ID NLM: 101694897
Informations de publication
Date de publication:
Jun 2020
Jun 2020
Historique:
received:
25
11
2019
revised:
25
02
2020
accepted:
02
03
2020
entrez:
1
8
2020
pubmed:
1
8
2020
medline:
1
8
2020
Statut:
epublish
Résumé
The aim of this study was to analyze possible effects of semen type (conventional vs. female sexed) and calf sex on fertility and production traits. For this purpose, field data of German Holstein heifers in Lower Saxony were evaluated. Sexed semen was mainly used for first insemination. 87.0% female calves were born from sexed semen, while 52.7% female calves were born from conventional semen. Heifers inseminated with sexed semen were on average 43 to 48 days younger at their first calving than heifers inseminated with conventional semen. Calf sex had an influence on the average calving ease and the dystocia rates. Male calves showed higher calving ease scores and caused a higher risk for dystocia than female calves. The semen type had no influence on these characteristics. Within the same calf sex, sexed semen had only minor effects on most traits, except for stillbirth rates: the stillbirth rate for male calves from female sexed semen was 30.6%, which was 2.86 times the stillbirth rate of male calves from conventional semen, possibly due to trisomies. Sexed semen played only a minor role for production traits in first lactations. The extrapolated 305-day milk yield was 200 kg lower for first calf heifers, which were inseminated with sexed semen compared to heifers inseminated with conventional semen. Fat and protein yield were 6 kg to 8 kg lower after use of sexed semen. Animals with female offspring from sexed semen showed higher survival rates than the other groups.
Identifiants
pubmed: 32734111
doi: 10.1016/j.vas.2020.100101
pii: S2451-943X(20)30014-4
pii: 100101
pmc: PMC7386698
doi:
Types de publication
Journal Article
Langues
eng
Pagination
100101Informations de copyright
© 2020 The Authors.
Déclaration de conflit d'intérêts
The authors declare that there is no conflict of interest.
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