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001-es BibID:	BIBFORM121480
Első szerző:	Osotsi, Joab Malanda (PhD Hallgató)
Cím:	Characterization of Removal Reasons for Nurse Sows and the associated Removal due to their Extended Lactation Length in Hyperprolific Farrow-Wean Herds / Joab Malanda Osotsi; Peter Balogh; Gabriella Novotni-Danko
Dátum:	2024
ISSN:	2076-2615
Megjegyzések:	This study aimed to characterize and quantify reasons for removal of nurse sows and identify the removal associated with their extended lactation length (ELL). A total of 100,756 removed nurse sows within a period of 2016-2022 from sow herds in Midwest USA were analysed. Reproductive failure was the most common removal reason (?2=8748.421, P<0.001) affecting P 1, P2 and P3 nurse sows. Failure to conceive and absence of estrus were main causes of reproductive failure, (?2 32 =352.480, P<0.001) affecting P1 and P2 nurse sows and P1 and P5 nurse sows respectively. When P2 and P6 nurse sows had an ELL of 0-7d, they faced a high chance (?2 33 =13.312, P = 0.021) of removal due to conception failure and failure to return to heat, respectively. When P2 and P5 nurse sows had an ELL of 8-14d, they were highly vulnerable (?2 35 =59.847, P<0.001) to removal due to failure to conceive and showing heat respectively. Finally, when ELL was at 15-21 days, P4 and P5 nurse sows were more likely (?2 37 =41.751, P<0.001) removed due to failure to express heat, whereas at the same time, P2 and P3 nurse sows experienced same removal threat due to failing to conceive. These results could help producers managing nurse-sow systems.
Tárgyszavak:	Agrártudományok Állattenyésztési tudományok idegen nyelvű folyóiratközlemény külföldi lapban folyóiratcikk Pig production nurse sow parity reproductive failure heat did not conceive
Megjelenés:	Animals. - accepted for publication : (2024), p. 1-13. -
További szerzők:	Balogh Péter (1970-) (agrármérnök) Novotniné Dankó Gabriella (1967-) (agrármérnök)
Internet cím:	Intézményi repozitóriumban (DEA) tárolt változat
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