Risk factors for stillbirth and dystocia in Japanese Black cattle

Uematsu, Mizuho; Sasaki, Yosuke; Kitahara, Go; Sameshima, Hiroshi; Osawa, Takeshi

doi:10.1016/j.tvjl.2013.07.016

Cited by 46 publications

(45 citation statements)

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“…This result was comparable to other study reported (4.06%-9.7%) for same breed [6,7,[14][15][16]44] . In this study, the effect of parity on the stillbirth rate was significant as also mentioned by earlier authors [1,7,8,9,44] . In this respect the most important factor was the fetus-dam pelvis disproportion [1,5,8,9] .…”

Section: Discussionsupporting

confidence: 84%

“…In this study, the effect of parity on the stillbirth rate was significant as also mentioned by earlier authors [1,7,8,9,44] . In this respect the most important factor was the fetus-dam pelvis disproportion [1,5,8,9] . Uematsu et al [9] reported that a high fetus weight in pregnant heifers with an immature pelvis increased the risk of calving difficulty and stillbirths.…”

Section: Discussionsupporting

confidence: 84%

“…Calving difficulties always led to stillbirths in the warm season, whereas this rate was only 40.9% in the cold season. Also earlier studies reported that the calving season is a significant factor affecting calving difficulty [3,4,9] .…”

Section: Discussionmentioning

confidence: 91%

“…In this respect the most important factor was the fetus-dam pelvis disproportion [1,5,8,9] . Uematsu et al [9] reported that a high fetus weight in pregnant heifers with an immature pelvis increased the risk of calving difficulty and stillbirths. The study conducted by Gundelach et al [7] in Holstein Friesain cows with pelvis sizes of >55 versus ≤55 reported stillbirth rates of 7.0% and 15.6%, respectively.…”

Section: Discussionmentioning

confidence: 99%

“…The productivity of the beef and dairy industry is highly influenced by stillbirth and calving difficulty rates [7,9] . Meijering [10] reported that stillbirths and calving difficulties result into significant costs, which can be either direct (loss of calves, death of dams, veterinary assistance and labour) or long-term (culling rate, milk yield and fertility).…”

Section: Introductionmentioning

confidence: 99%

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Genetiksel Olmayan Faktörlerin Siyah Alaca Sığırlarda Güç ve Ölü Doğuma Etkilerinin CHAID Analizi İle İncelenmesi

Bayram¹,

Topal²,

AKSAKAL³

et al. 2015

Kafkas Univ Vet Fak Derg

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A total number of 947 calving records from 613 Holstein Friesian cows raised at a private dairy farm in Kelkit, Turkey, from 2004 to 2006 were used to study the effect of non-genetic factors on calving difficulty and stillbirth rate using CHAID algorithm. The mean calf birth weight was 41.0±0.19 kg. The overall incidence of calving difficulty and stillbirths in the Holstein Friesian herd were 9.1% and 9.4%, respectively. Calf birth weight, birth type and calving season had the greatest impact on calving difficulty. The increase in calf birth weight was associated with a significant increase in calving difficulties (P<0.01). The calving difficulty risk in twins (18.9%) was higher than in singleton calves (5.0%). The main environmental variables affecting the stillbirth rate were parity number, calf birth weight, sex of calf, calving season and calving difficulty. Parity number was statistically the most relevant factor affecting the stillbirth rate, which was also higher in primiparous (18.7%) than in multiparous cows (5.4%). As the calf birth weight increased, a significant increase was also in the stillbirth rate (P<0.01). The stillbirth rate in winter (19.7%) was higher than in other seasons (3.6%) (P<0.01). Calving assistance was associated with an increased risk of stillbirth (P<0.05). As a result, calf birth weight, birth type and calving season had the greatest impact variables on calving difficulty, however, parity, calf birth weight, sex, calving season and calving difficulty were the most effective variables on stillbirth in Holstein Friesian Cattle. Sürüye ait ortalama buzağılama güçlüğü ve ölü doğum oranları sırasıyla %9.1 ve %9.4 olmuştur. Buzağılama güçlüğünü etkileyen en önemli çevresel değişkenler, buzağı doğum ağırlığı, buzağılama tipi ve buzağılama mevsimi olmuştur. Buzağılara ait doğum ağırlığı artıkça, buzağılama güçlüğü önemli oranda artmıştır (P<0.01). İkiz doğan buzağılarda güç doğum riski (%18.9), tek doğanlardan (%5.0) oldukça yüksektir (P<0.01). Ölü doğuma etkili en önemli çevresel değişkenler sırasıyla; doğum sırası, buzağının doğum ağırlığı, buzağı cinsiyeti, buzağılama mevsimi ve buzağılma güçlüğü olmuştur. Ölü doğum üzerine etkili en önemli değişken doğum sırası olup, ilkine doğum yapan ineklerde ölü doğum oranı (%18.7), çoklu doğum yapanlardan (%5.4) yaklaşık 3.5 kat daha yüksektir. Buzağıya ait doğum ağırlığı artıkça, ölü doğum oranı önemli oranda artmıştır (P<0.01). Kış mevsiminde gerçekleşen doğumlarda ölü doğum (%19.7), diğer mevsimlerden (%3.6) yüksektir (P<0.01). Güç doğan buzağılarda ölü doğum (%10.0), kolay doğanlardan (%1.9) daha yüksektir (P<0.01). Sonuç olarak, Siyah Alaca sığırlarda güç doğuma etkili değişkenler buzağı doğum ağırlığı, doğum tipi ve buzağılama mevsimi olurken ölü doğum üzerine doğum sırası, buzağının doğum ağırlığı, buzağı cinsiyeti, buzağılama mevsimi ve buzağılma güçlüğü en etkili değişkenler olmuştur. Keywords

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