Effect of certain factors on productive and reproductive efficiency traits and phenotypic relationships among these traits and repeatabilities in West Anatolian Holsteins

Tekerli, Mustafa; GÜNDOGAN, MUSTAFA

Effect of certain factors on productive and reproductive efficiency traits and phenotypic relationships among these traits and repeatabilities in West Anatolian Holsteins

Mustafa TEKERLİ, (Afyon Kocatepe Üniversitesi, Veteriner Fakültesi, Afyon, Türkiye)

Mustafa GÜNDOĞAN (Afyon Kocatepe Üniversitesi, Veteriner Fakültesi, Afyon, Türkiye)

Turkish Journal of Veterinary and Animal Sciences

3 0

Yıl: 2005 Cilt: 29 Sayı: 1 Sayfa Aralığı: 17 - 22 Metin Dili: Türkçe İndeks Tarihi: 29-07-2022

Effect of certain factors on productive and reproductive efficiency traits and phenotypic relationships among these traits and repeatabilities in West Anatolian Holsteins

Öz:

Bu araştırma bazı faktörlerin Holştaynlarda bazı üretim randımanı göstergeleri, süt üretimi ve üremeye etkilerini ortaya koymak ve bu özellikler arasındaki fenetopik korelasyonları ve tekrarlama derecelerini tahmin etmek amacıyla yapılmıştır. Araştırma materyalini TÜRK-ANAFl süt sığırcılığını geliştirme projesi kapsamında Batı Anadolu'da yetiştirilen 525 ineğin 1990 - 1993 yılları arasında tutulmuş 506 birinci ve 232 ikinci laktasyon kaydı oluşturmuştur. Üç üretim randımanı (laktasyon süresinde günlük süt verimi (LSGSV), buzağılama aralığında günlük süt verimi (BAGSV), ikinci buzağılama yaşında günlük süt verimi (1BYGSV)), bir üretim özelliği (laktasyon verimi (LV) ve bir üreme özelliği (buzağılama aralığı (BA) incelenmiştir. LSGSV, BAGSV, İBYGSV, LV ve BA için ortalama değerler sırasıyla 19,04 kg, 15,44 kg, 4,91 kg, 6404,77 kg ve 418,86 gün bulunmuştur. Varyans analizleri, bölge - yıl faktörünün tüm özellikleri önemli derecede (P < 0,05) etkilediğini, buna karşılık laktasyon sırasının hiçbir özellik üzerinde önemli etkiye sahip olmadığını göstermiştir. Buzağılama ayı ise sadece İBYGSV, LV ve BA özelliklerini önemli (P < 0,05) düzeyde etkilemiştir. En küçük kareler ortalamaları bu özelliklerde en düşük değerlerin yaz aylarında buzağılayanlarda olduğunu göstermiştir. Yaş faktörünün de LSQSV, BAGSV ve LV özellikleri üzerinde etkisi önemli (P < 0,05) bulunmuştur. Süt verimi ve buzağılama aralığı arasındaki fenotipik korelasyon (0,55) yüksek verimli ineklerin daha uzun bir buzağılama aralığına sahip olduğunu göstermiştir. Ayrıca süt verimi 7000 kg düzeyini aştıktan sonra döl veriminin baskılanmaya başladığı belirlenmiştir. Tekrarlama derecelerinin LSGSV (0,51), BAGSV (0,41) ve LV (0,43) için yüksek BA (0,10) için ise düşük olduğu saptanmıştır.

Anahtar Kelime: fenotipik korelasyon fenotip tekrarlanabilirlik süt üretim özellikleri süt verimi buzağılama aralığı süt üretimi döl verimi Alacalı Sığır üretim etkinliği Türkiye süt sığırı

Konular: Ziraat Mühendisliği

Batı Anadolu Holştaynlarının üreme ve üretim etkinliği özelliklerine bazı faktörlerin etkisi, bu özellikler arası fenotipik ilişkiler ve tekrarlama dereceleri

Öz:

The present investigation was undertaken to study certain factors affecting production efficiency, milk production and reproduction and to estimate the repeatabilities and phenotypic correlations of these traits in Holsteins maintained at different farms in western Anatolia over 3 years (1990 - 1993). The data consisted of 506 first and 232 second lactations of 525 cows. Three production efficiency traits (milk yield per day of lactation length (MYPDLL), milk yield per day of calving interval (MYPDCI) and milk yield per day of age at second calving (MYPDASC)), one production trait (lactation yield (LY)), and one reproduction trait (calving interval (CI)) were studied. The means of MYPDLL, MYPDCI, MYPDASC, LY and Cl were 19.04 kg, 15.44 kg, 4.91 kg, 6404.77 kg, and 418.86 days, respectively." The analyses of variance indicated that the effects of the region-year factor were significant (P < 0.05) for all traits, whereas none of the traits was influenced by the parity order. The calving months were significant (P < 0.05) for MYPDASC, LY and Cl. Least-squares means illustrated that these traits were lower for summer calvers. Age also had an important effect (P < 0.05) on MYPDLL, MYPDCI and LY. The positive phenotypic correlation (0.55) between milk yield and calving interval suggested that the higher yielding cows had longer calving intervals. Fertility was also severely depressed when the lactation yield was higher than 7000 kg. The repeatabilities for MYPDLL (0.51), MYPDCI (0.41) and LY (0.43) were high, and low for calving interval (0.10).

Anahtar Kelime: fertility Holstein-Friesian production efficiency Turkey dairy cattle phenotypic correlation phenotypes repeatability milk production characteristics milk yield calving interval milk production

Konular: Ziraat Mühendisliği

Belge Türü: Makale Makale Türü: Araştırma Makalesi Erişim Türü: Erişime Açık

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APA	Tekerli M, GÜNDOGAN M (2005). Effect of certain factors on productive and reproductive efficiency traits and phenotypic relationships among these traits and repeatabilities in West Anatolian Holsteins. , 17 - 22.
Chicago	Tekerli Mustafa,GÜNDOGAN MUSTAFA Effect of certain factors on productive and reproductive efficiency traits and phenotypic relationships among these traits and repeatabilities in West Anatolian Holsteins. (2005): 17 - 22.
MLA	Tekerli Mustafa,GÜNDOGAN MUSTAFA Effect of certain factors on productive and reproductive efficiency traits and phenotypic relationships among these traits and repeatabilities in West Anatolian Holsteins. , 2005, ss.17 - 22.
AMA	Tekerli M,GÜNDOGAN M Effect of certain factors on productive and reproductive efficiency traits and phenotypic relationships among these traits and repeatabilities in West Anatolian Holsteins. . 2005; 17 - 22.
Vancouver	Tekerli M,GÜNDOGAN M Effect of certain factors on productive and reproductive efficiency traits and phenotypic relationships among these traits and repeatabilities in West Anatolian Holsteins. . 2005; 17 - 22.
IEEE	Tekerli M,GÜNDOGAN M "Effect of certain factors on productive and reproductive efficiency traits and phenotypic relationships among these traits and repeatabilities in West Anatolian Holsteins." , ss.17 - 22, 2005.
ISNAD	Tekerli, Mustafa - GÜNDOGAN, MUSTAFA. "Effect of certain factors on productive and reproductive efficiency traits and phenotypic relationships among these traits and repeatabilities in West Anatolian Holsteins". (2005), 17-22.

APA	Tekerli M, GÜNDOGAN M (2005). Effect of certain factors on productive and reproductive efficiency traits and phenotypic relationships among these traits and repeatabilities in West Anatolian Holsteins. Turkish Journal of Veterinary and Animal Sciences, 29(1), 17 - 22.
Chicago	Tekerli Mustafa,GÜNDOGAN MUSTAFA Effect of certain factors on productive and reproductive efficiency traits and phenotypic relationships among these traits and repeatabilities in West Anatolian Holsteins. Turkish Journal of Veterinary and Animal Sciences 29, no.1 (2005): 17 - 22.
MLA	Tekerli Mustafa,GÜNDOGAN MUSTAFA Effect of certain factors on productive and reproductive efficiency traits and phenotypic relationships among these traits and repeatabilities in West Anatolian Holsteins. Turkish Journal of Veterinary and Animal Sciences, vol.29, no.1, 2005, ss.17 - 22.
AMA	Tekerli M,GÜNDOGAN M Effect of certain factors on productive and reproductive efficiency traits and phenotypic relationships among these traits and repeatabilities in West Anatolian Holsteins. Turkish Journal of Veterinary and Animal Sciences. 2005; 29(1): 17 - 22.
Vancouver	Tekerli M,GÜNDOGAN M Effect of certain factors on productive and reproductive efficiency traits and phenotypic relationships among these traits and repeatabilities in West Anatolian Holsteins. Turkish Journal of Veterinary and Animal Sciences. 2005; 29(1): 17 - 22.
IEEE	Tekerli M,GÜNDOGAN M "Effect of certain factors on productive and reproductive efficiency traits and phenotypic relationships among these traits and repeatabilities in West Anatolian Holsteins." Turkish Journal of Veterinary and Animal Sciences, 29, ss.17 - 22, 2005.
ISNAD	Tekerli, Mustafa - GÜNDOGAN, MUSTAFA. "Effect of certain factors on productive and reproductive efficiency traits and phenotypic relationships among these traits and repeatabilities in West Anatolian Holsteins". Turkish Journal of Veterinary and Animal Sciences 29/1 (2005), 17-22.