A Study on Performance Analysis of Holstein-Friesian Cattle Herd under Semi-Intensive Management at Pishin Dairy Farm Balochistan

Öz

The present study was conducted to evaluate the productive and reproductive performance i.e., age

at maturity, age at first conception, age at first calving, services per conception, service period, gestation period,

calving interval, dry period, lactation length and milk yield of Holstein-Friesian cattle. The data on six lactations of

100 Holstein-Friesian cattle (in each lactation) herd reared under semi-intensive management at Government Dairy

Farm Pishin, Balochistan, Pakistan were collected during 1980-1994. Results of the study showed that overall averages,

age at maturity heifers was 650.10±5.67 days, age at first conception was 633.82±10.44 days, age at first calving

912±13.11 days, services per conception 2.89±0.10, service period 133.79 days, gestation period 275.35±0.59

days, calving interval 409.17, dry period 113.19 days and lactation length 320.14±11.14 days. Averages of the milk

yield for 1st, 2nd, 3rd, 4th, 5th and 6th lactations were found as: 3773.42±15.77, 3793.86±14.39, 3948.37±14.91,

4108.31±15.62, 4304.08±16.42 and 4022.40±11.35 liters, respectively with an overall average of 3992.41±16.20

liters. The results of all traits showed variation however, services per conception, service period, gestation period

parameters were only significantly different (P<0.05). Season of calving affected on milk yield, lactation length,

calving interval and dry period on the performance of the Holstein-Friesian cattle herd.

Results reflected that productive and reproductive traits of Holstein-Friesian cattle in the present study were low

to moderate compared to the findings of previous researchers. Therefore, it is necessary to improve managemental

practices at the farm for better reproductive and productive traits.

Anahtar Kelimeler

• Holstein-Friesian cattle,Lactation length,Milk yield,Dry period

Balochistan, Pishin Süt Sığırcılık Çiftliğinde Yarı-Entansif Koşullarda Holştayn Irkı Sürülerinin Performans Analizi Üzerinde Bir Çalışma

Öz

Bu çalışma, Siyah-alaca sığırlarının ergin yaş, ilk gebe kalma yaşı, ilk buzağılama yaşı, gebelik başına tohumlama sayısı, servis periyodu, gebelik süresi, buzağılama aralığı, kuruda kalma period, laktasyon uzunluğu ve süt verimi gibi verim ve üreme performanslarını değerlendirmek için yürütülmüştür. Balochistan’da (Pakistan) bulunan Pishin devlet üretme çiftliğinde yarı entansif koşullarda yetiştirilen 100 Siyah Alaca sığırının 6 laktasyonuna ait veriler 1980-1994 yılları boyunca toplanmıştır. Çalışmanın sonuçları, düvelerin ergin yaşını 650.10±5.67 gün, ilk gebe kalma yaşının 633.82±10.44 gün, ilk buzağılama yaşının 912±13.11 gün, gebelik başına tohumlama sayısının 2.89±0.10, servis periyodunun 133.79 gün, gebelik süresinin 275.35±0.59, buzağılama aralığının 409.17 gün, kuruda kalma süresinin 113.19 gün ve laktasyon süresinin 320.14±11.14 gün olduğunu göstermiştir. Genel ortalaması 3992.41±16.20 lt olan süt veriminin 1., 2., 3., 4., 5., ve 6. laktasyon ortalamaları sırasıyla; 3773.42±15.77, 3793.86±14.39, 3948.37±14.91, 4108.31±15.62, 4304.08±16.42 ve 4022.40±11.35 lt olarak bulunmuştur. Tüm özelliklerin sonuçları önemli varyasyon göstermekle birlikte sadece gebelik başına tohumlama sayısı, servis periyodu ve gebelik süresi parametreleri bakımından önemli farklılıklar bulunmuştur (P

Anahtar Kelimeler

• Laktasyon süresi, Siyah Alaca süt verimi, Kuruda kalma süresi

Kaynakça

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