Süt Sığırlarının Beslenmesi
Özet
Bu bölüm, süt sığırlarının laktasyonun farklı dönemlerinde ve kuru dönemde beslenmesini ele almaktadır. Besin maddesi gereksinimleri süt verimine, vücut kondisyonuna ve fizyolojik duruma bağlı olarak önemli ölçüde değişkenlik göstermektedir. Erken laktasyon döneminde inekler, artan süt üretimi ve yetersiz kuru madde tüketimi nedeniyle genellikle negatif bir enerji dengesiyle karşı karşıya kalmaktadır. Bu nedenle, uygun lif ve nişasta dengesine sahip enerji bakımından yoğun rasyonlar, rumen sağlığını ve verimliliğini desteklemek için gereklidir. Protein kaynakları, mikrobiyal protein üretimini artırmak ve metabolize edilebilir protein gereksinimlerini karşılamak için rumende parçalanabilir protein ve rumende parçalanamayan protein kombinasyonu sağlanmalıdır. Orta ve geç laktasyonda, süt verimindeki azalmaya paralel olarak enerji ve protein ihtiyacı yeniden düzenlenmelidir. Bu dönemde rasyonun amacı, üreme etkinliğini desteklemek ve uygun vücut kondisyonunu sürdürmektir. Kuru dönemde ise özellikle geçiş dönemi beslemesi öne çıkmaktadır. Hipokalsemi, ketozis ve yağlı karaciğer gibi metabolik hastalıkların önlenmesi için rasyon katyon anyon dengesi, minerallerin vücut tarafından kullanılabilirliği ve bağışıklığı destekleyen maddeler dikkate alınmalıdır.
This section examines the nutritional management of dairy cows throughout various lactation stages and the dry period. Nutrient requirements differ markedly based on milk yield, body condition, and physiological status. In the early lactation period, cows frequently experience a negative energy balance resulting from heightened milk production and inadequate dry matter intake. Energy-dense rations that maintain an appropriate balance of fiber and starch are essential for supporting rumen health and enhancing productivity. Protein sources must offer a blend of rumen-degradable protein and rumen-undegradable protein to enhance microbial protein synthesis and fulfill metabolizable protein needs. During mid- and late-lactation, it is essential to adjust energy and protein requirements in accordance with the decrease in milk production. The aim of the ration during this period is to enhance reproductive efficiency and sustain suitable body conditions. Feeding during the transition period is especially critical during the dry phase. To mitigate metabolic diseases including hypocalcemia, ketosis, and fatty liver, it is essential to consider the cation-anion balance of the ration, mineral bioavailability, and the presence of immune-supporting substances.
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