Journals / Ankara Üniversitesi Veteriner Fakültesi Dergisi / 2019 / Cilt: 66 - Sayı: 2

Milk yield and quality traits in different lactation stages of Damascus goats: Concentrate and pasture based feeding systems

Şam keçilerinde laktasyonun farklı dönemlerinde süt verimi ve süt kalitesi özellikleri: Konsantre ve meraya dayalı besleme sistemleri

Pages
117–129
Publication Date
2022-11-05
DOI
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AI Summary & Key Takeaways

AI Insight
⚡ TL;DR(Too Long; Didn't Read)

In accordance with milk fatty acid composition, compared to the milk obtained from goats fed with concentrate, the milk obtained from the goats that pastured was healthier and early lactation stage was found to produce healthier milk than late lactation stage.

📌 3 Key Takeaways

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Objective & Hypothesis:This study aimed to survey milk yield, lactation stages and milk quality traits of Damascus goats reared under different feeding systems.
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Key Findings & Data:Goats were divided according to feeding systems as pasture based and concentrate based.
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Conclusion & Impact:In accordance with milk fatty acid composition, compared to the milk obtained from goats fed with concentrate, the milk obtained from the goats that pastured was healthier and early lactation stage was found to produce healthier milk than late lactation stage.
🔬Design:Survey & Empirical Study
📍Scope:Comprehensive Sample
⚙️Variables:Domain Parameters

Abstract

This study aimed to survey milk yield, lactation stages and milk quality traits of Damascus goats reared under different feeding systems. Goats were divided according to feeding systems as pasture based and concentrate based. Feeding systems were found to have significant effect on lactation milk yield but not on lactation duration. Although differences between feeding systems were not found significant on pH, milk composition factors (fat, lactose, dry matter), somatic cell count and malondialdehyde (except for early lactation stage) for each lactation stage, significant effects were detected on same parameters among lactation stages. Calcium levels at early lactation stage in milk differed either between feeding systems or among lactation stages. Also, other minerals were found to decrease with lactation. While most of the fatty acids were affected in any of the lactation stages by the feeding system, all of them were significantly altered by lactation stages. Pastured goats had a lower percentage of total saturated fatty acids, atherogenic index, thrombogenic index and odour index ratios. In accordance with milk fatty acid composition, compared to the milk obtained from goats fed with concentrate, the milk obtained from the goats that pastured was healthier and early lactation stage was found to produce healthier milk than late lactation stage.

Özet

Bu çalışma, farklı besleme sistemlerindeki Şam keçilerinin laktasyonun farklı dönemlerinde süt verimi ve süt kalite özelliklerinin araştırılması amacıyla yapılmıştır. Keçiler konsantre yeme ve meraya dayalı olarak iki farklı besleme sistemine ayrılmıştır. Besleme sistemlerinin, laktasyon süresi üzerine etkisi önemsiz olurken laktasyon süt verimi üzerinde önemli farklılığa sebep olmuştur. Besleme sistemleri arasında pH, süt kompozisyonu (yağ, laktoz, kuru madde), somatik hücre sayısı ve laktasyonun erken dönemleri hariç malondialdehit düzeyleri benzer olurken, aynı parametreler üzerinde laktasyon dönemlerinin etkisi önemli olmuştur. Sütteki Kalsiyum seviyeleri erken laktasyon dönemlerinde besleme sistemleri bakımından farklılık göstermiştir. Ayrıca laktasyon dönemleri arasında da farklılık meydana gelmiştir. Sütte bulunan diğer mineral maddelerin de laktasyonla beraber azaldığı tespit edilmiştir. Yağ asidi kompozisyonu besleme sistemlerinden büyük oranda etkilenirken, tüm yağ asitleri laktasyon dönemlerine göre önemli düzeyde farklılık göstermişlerdir. Meraya dayalı besleme sistemindeki keçilere ait sütler daha düşük toplam doymuş yağ asidi oranı, aterojenik indeks, trombojenik indeks ve koku indeks değerine sahip olmuştur. Süt yağ asidi kompozisyonu bakımından meraya dayalı beslenen keçilerden elde edilen süt konsantre yeme dayalı beslenen gruba göre daha sağlıklı bulunmuştur. Benzer şekilde erken laktasyon döneminde üretilen süt, geç laktasyon döneminde üretilene göre daha sağlıklı olmuştur.

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Cite This Article

YAKAN, A., KOÇAK, Ö., ÖZBEYAZ, C., ATEŞ, C. T., ŞAKAR, A. E., DOĞRUER, G., ÖZKAN, H., ÜNAL, N. (2022). Milk yield and quality traits in different lactation stages of Damascus goats: Concentrate and pasture based feeding systems. Ankara Üniversitesi Veteriner Fakültesi Dergisi, Cilt: 66 - Sayı: 2, 117–129. https://ajindex.com/articles/648661

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