The Effect of field pea (pisum sativum) replacement in starch- and fiber-based post weaning transition diets for 7.5 month old beef calves and subsequent effect on feedlot finishing performance, carcass quality and net return

Araştırmanın amacı, 3 yıllık çalışma süresince 38 gün nişasta ve lif esaslı sütten geçiş dönemi rasyonlarını (WTD) karşılaştırmak ve rasyonların buzağı performansı, yem tüketimi ve yemden yararlanma (FE) üzerine etkisini belirlemektir. Bunu takiben, WTDlerinin besi bitirme performansı, inek ve buzağı net getirisi üzerine etkisi belirlenmiştir. Melez erkek ve dişi danalar (Angus x Hereford x Gelbvieh; n=405; Yaş=7.5 ay; BW=278±4.3 kg) yaş ve sütten kesim ağırlığı homojen olacak şekilde rastgele altı gruba (4 tekrar/grup) ayrılmıştır. Nişasta esaslı WTDleri soya küspesi (SBM) ve yemlik bezelye (FP) ile lif esaslı WTDleri de artan seviyelerde (%0-30) yemlik bezelye (FP) ile formüle edilmiştir. Peletlenmiş WTD grupları sırasıyla 1-(CSBM) nişasta- esaslı+SBM, 2-(CPEA) nişasta-esaslı+FP, 3-(0PEA) lif-esaslı+%0 FP, 4-(10PEA) lif-esaslı+%10 FP, 5-(20PEA) lif-esaslı+%20 FP, and 6-(30PEA) lif-esaslı+%30 FB şeklindedir. Canlı ağırlık ve ortalama günlük canlı ağırlık artışı (ADG) CSBM, 0PEA, 10PEA ve 20PEA gruplarında CPEA ve 30PEA gruplarına oranla daha yüksek (P

Nişasta ve lif esaslı sütten kesim sonrası geçiş rasyonlarına ikame edilen yemlik bezelyenin 7.5 aylık yaştaki besi danalarının daha sonraki besi bitirme performansı, Karkas kalitesi ve net getirisi üzerine etkisi

The research objective, during a 3-yr study, was to compare starch- and fiber-based 38 d weaning transition diets (WTD) to identify the efect on calf performance, feed intake and feed efficiency (FE). Subsequently, the efect of WTD on feedlot finishing performance and cow and calf net return was determined. Crossbred steer and female calves (Angus x Hereford x Gelbvieh; n=405; Age=7.5 month; BW=278±4.3 kg) were randomly assigned to six treatments (4 pen replicates/treatment) based on age and weaning weight. Starch-based WTD were formulated with soybean meal (SBM) and field pea (FP), and fiber-based diets were formulated with increasing levels of FP (0-30%). Pelleted WTD treatments were: 1-(CSBM) starch-base+SBM, 2-(CPEA) starch-base+FP, 3-(0PEA) fiber-base+0% FP, 4-(10PEA) fiber-base+10% FP, 5-(20PEA) fiber-base+20% FP, and 6-(30PEA) fiber-base+30% FP. The CSBM, 0PEA, 10PEA, and 20PEA treatments had greater gain and average daily gain (ADG) compared to the CPEA and 30PEA (P<0.01), and the CPEA treatment had the lowest gain and ADG (P<0.001). Dry matter intake (DMI) was greatest for the fiber-based 0PEA and 20PEA WTD treatments and lowest for the starch-based CSBM and CPEA (P<0.001), and WTD did not afect FE (P=0.39). In addition, feedlot finishing performance and carcass measurements were not afected by WTD (P>0.10). Therefore, we conclude that FP can replace up to 20% of fiber-based ingredients in WTD without afecting DMI and ADG. However, the highest cow-calf net return was from the CSBM, 20PEA and 30PEA WTD treatments (P<0.001).

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