Review/Oorsig Volume 23, Issue 02 - Page 27

Volume 23 • Issue 02 • 2019 Effect of feeding ewes ZPM on foot lesions a Decreased foot lesions Control b 3.5 Ewes fed ZPM for 60 days during lambing season showed foot lesion scores averaging 43% below ewes fed the control diet. ZPM c 2.86 2.93 2.66 2.5 Lesion score 0 to 3, with 3 representing the most extensive and serious lesions. Score means reflect cumulative score per ewe for all four feet. b No supplemental zinc. c Zinc from ZPM sources; supplied 80 mg Zn per head per day. ShC-6 a 1.53 1.5 0.5 Initial Completion of study (60 d) Colostrum IgG level and weaning percentage of ewes 100 Control a 78.01 ZPM b 84.12 83.8 92.3 75 50 25 Improved colostrum quality Research shows ewes fed zinc from ZPM resulted in an 8% increase in IgG concentration compared to ewes fed the control diet. An average increase in IgG content of 23.8% across three studies has also been shown in dairy cows fed ZPM. In addition, a 10% improvement in percentage of lambs weaned was achieved in the ZPM group, compared to those in the control group. No added zinc. Zinc from ZPM sources provided 80 mg Zn per head per day. ShEL-6 a 0 IgG concentration (mg/ml) Lambs weaned (%) b Effect of zinc supplementation of ewes on lamb weight gain Improved average daily gain Supplied 50 ppm Zn per head per day. Zinc from ZPM sources supplied 50 ppm Zn per head per day. yz Means lacking a common superscript letter differ, P<0.01. Kegley and Spears, 1995. Sheep and Goat Res. J. 11:127. ShEL-40 a Control a ZPM b 0.33 z 0.3 Lambs born to ewes fed zinc from ZPM had a higher (P<0.01) average daily gain (ADG) from day 0 to 69 than lambs born to ewes fed the control diet. Research shows early lamb growth can be influenced by feeding ewes a more bioavailable source of zinc during late gestation and through weaning. 0.4 0.27 y 0.27 0.29 0.2 0.1 b 0 Day 0 to 69 Day 0 to 83 Available From: +27 (0) 11 789 2414 27