phaidra.vetmeduni.ac.at o:2770 DOI 10.3390/agriculture12070960 Impact of Calving Difficulty on Lameness in Dairy Cows The aims of our study were to evaluate the associations between calving difficulty and lameness and their effects on milk yield and quality traits. A total of 4723 calving cases were evaluated for calving difficulty using a 4-point scoring system. Lameness was diagnosed with a visual locomotion score system from 1 to 30 days after calving in 333 fresh dairy cows. Cows were divided into non-lame cows and lame cows. Milk quality traits were registered using Lely Astronaut (R) A3 milking robots. The normal distribution of all indicators was assessed using the Shapiro-Wilk normality test. Normally distributed milk indicators were expressed as mean +/- standard error of the mean. Differences between the mean values of their groups were determined using the Fisher's least significant difference test. We categorized cows by health status, i.e., lame (LA) and non-lame (HL) cows, and according to calving difficulty (CD) (on a 4-point scale: 1-no problem, 2-slight problem, 3-problems requiring assistance, 4-considerable force and extreme difficulty). In the present study, calving difficulty increased the risk of lameness in cows by 2.09-fold (95% CI = 1.644-2.650, p < 0.001). It was found that the mean standard milk yield in fresh dairy cows with calving difficulty was lower (-6.14 kg, p < 0.001) than in the group where no assistance was required at calving. Similarly, herd affected milk fat (%) and the calving process-herd and the interaction between calving difficulty and herd-and lameness impacted the quantity of milk protein and lactose in cows. We found that severe lameness (3-4 points) (3.88-5.92% of cows) became more prevalent in those cows that had dystocia than those that did not (0.27-2.37% of cows). eng Somatic-Cell Count; Locomotion Score Assessments; Milk-Yield; Reproductive-Performance; Body Condition; Risk-Factors; Metabolic Status; Claw; Dystocia; Lactation 2024-03-26T10:26:55.290Z LOMv1.0 Author BEGIN:VCARD VERSION:3.0 N:Malašauskienė;Dovilė; FN:Dovilė Malašauskienė END:VCARD BEGIN:VCARD VERSION:3.0 N:Baumgartner;Walter; FN:Walter Baumgartner X-ORCID:https://orcid.org/0000-0001-7366-7242 END:VCARD BEGIN:VCARD VERSION:3.0 N:Yilmaz;Ayhan; FN:Ayhan Yilmaz END:VCARD BEGIN:VCARD VERSION:3.0 N:Kajokienė;Lina; FN:Lina Kajokienė END:VCARD BEGIN:VCARD VERSION:3.0 N:Urbutis;Mingaudas; FN:Mingaudas Urbutis END:VCARD BEGIN:VCARD VERSION:3.0 N:Televičius;Mindaugas; FN:Mindaugas Televičius X-ORCID:https://orcid.org/0000-0001-8572-2616 END:VCARD BEGIN:VCARD VERSION:3.0 N:Urbonavičius;Gediminas; FN:Gediminas Urbonavičius END:VCARD BEGIN:VCARD VERSION:3.0 N:Paulauskas;Algimantas; FN:Algimantas Paulauskas END:VCARD BEGIN:VCARD VERSION:3.0 N:Antanaitis;Ramūnas; FN:Ramūnas Antanaitis X-ORCID:https://orcid.org/0000-0002-9993-2224 END:VCARD BEGIN:VCARD VERSION:3.0 N:Juozaitienė;Vida; FN:Vida Juozaitienė END:VCARD https://w3id.org/kim/hcrt/scheme https://w3id.org/kim/hcrt/text Textdokument Text LOMv1.0 yes https://creativecommons.org/licenses/by/4.0 application/pdf 576150 https://phaidra.vetmeduni.ac.at/o:2770 https://phaidra.vetmeduni.ac.at/api/object/o:2770/thumbnail LOMv1.0 discipline