Effect of Non-Genetic Factors on The Reproductive Performance and Milk Yield Characteristics of Hair Goats

Year 2019, , 52 - 61, 31.03.2019

Memiş Bolacalı , Yahya Öztürk , Orhan Yılmaz , Mürsel Küçük , Mehmet Akif Karslı

https://doi.org/10.30607/kvj.472839

Cited By: 2

Abstract

The aim of this study was to determine the potential
effect of non-genetic factors on certain production characteristics of Hair
goats raised under semi-intensive management and dry- sub humid conditions, and
to investigate phenotypic correlations between these traits. A generalized
linear model was used to investigate the effect of non-genetic factors on
gestation length (GL), number of services per conception (NSPC), lactation
length (LL), lactation milk yield (LMY) and daily milk yield (DMY), while the
Chi-square method was used to evaluate other fertility parameters. The
pregnancy rate, birth rate and single-birth rate in the Traditional Group were
higher, while the infertility rate and NSPC were lower, than those in the
Artificial Group (P<0.001). Furthermore, it was determined that LL, LMY and
DMY increased (P<0.001), the NSPC decreased (P<0.001), and birth and twinning
rates fluctuated (P<0.01) as age increased. The best fertility and milk
yield characteristics were in the ≥5 year-old-goats and live weights of
45.0-49.9 kg. In addition, it was determined that kid yield was increased in
the goats synchronized with intravaginal sponges impregnated with fluorogestone
acetate and in those bred via the traditional method.

Keywords

artificial insemination, estrus synchronization, milk yield, reproductive performance

Kıl Keçilerinin Döl ve Süt Verimi Özellikleri Üzerine Genetik Olmayan Faktörlerin Etkisi

Abstract

Bu çalışmanın amacı, yarı
entansif ve kurak az   nemli iklim
koşullarında yetiştirilen Kıl keçilerinin döl verimi ve süt verimi üzerine
genetik olmayan faktörlerin etkisini belirlemek ve bu faktörler arasındaki
fenotipik korelasyonu araştırmaktır. Gebelik süresi (GL), gebelik başına düşen
tohumlama sayısı (NSPC), laktasyon uzunluğu (LL), laskyason süt verimi (LMY) ve
günlük süt verimi (DMY) üzerine genetik olmayan faktörlerin
değerlendirilmesinde Genear linear model, diğer döl verim parametrelerinin
değerlendirilmesinde ise Chi-square metodu kullanılmıştır. Tabii tohumlama
yapılan gruptaki keçilerin gebelik oranı, doğu 
m oranı ve tek doğum oranı suni tohumlama uygulananlardan daha yüksek
iken, NSPC sayısı daha düşüktür. Yaş arttıkça LL, LMY ve DMY artmış
(P<0.001), NSPC azalmış (P<0.001), tek ve ikiz doğum oranları ise
dalgalanma göstermiştir (P<0.01). En iyi döl verimi ve süt verimi nin  5 ve daha yukarı yaşlı   ve 45.0-49.9 kg canlı ağırlığındaki
keçilerde olduğu belirlenmiştir. Fluorogestone acetate içeren intravajinal
sünger ile senkronizasyon   ile tabii
tohumlama uygulaması nın  keçilerde oğlak
verimini   arttırdığı   sonucuna varılmıştır. 

Keywords

suni tohumlama, östrüs senkronizasyonu, süt verimi, döl verimi

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