The Effect of Aloe Vera Gel and Conjugated Linoleic Acid Supplement on Performance, Blood Metabolites and Immune System Parameters in Holstein milk-fed calves

Seifi hajikhanlu, Nader (2018) The Effect of Aloe Vera Gel and Conjugated Linoleic Acid Supplement on Performance, Blood Metabolites and Immune System Parameters in Holstein milk-fed calves. Masters thesis, University of Mohaghegh Ardabili.

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Text (تاثیر ژل آلوئه ورا و مکمل اسید لینولئیک مزدوج بر عملکرد رشد، متابولیت های خونی و فراسنجه های سیستم ایمنی در گوساله های شیرخوار هلشتاین) Nader Seifi hajikhanlu.pdf Download (441kB) | Preview

Abstract

The main purpose of this study was the evaluate of the effect of Aloe Vera gel and conjugated linoleic acid supplement on growth performance, blood metabolites and immunity parameters in Holstein calves. This study was carried out using 24 male and female Holstein bulls with mean age of 1-10 days and weighting 38±8 kg with 4 treatments and 6 replications in a completely randomized design with a factorial (2 × 2). The treatments consisted of: (1) basic diet consisting of starter and whole milk (control) (2) basal diet + 250 mg / kg body weight Aloe vera gel (3) base ration + 20 grams per kilogram dry matter consumed complementary conjugated linoleic acid (CLA). (4) Basal diet with 250 mg of Aloe vera gel + 20 g of CLA. During the experiment, the ration of the starter was free, and alfalfa was fed to the calves from the age of 20 days. The results of this experiment showed that the average daily gain of calves in the first month and the whole period was influenced by the experimental diet and increased compared to the control group (P < 0.05). The calves fed 20g CLA in the first month and the calves fed with 250 mg of Aloe Vera gel in the second month showed the highest weight. Also, calves fed CLA supplement significantly reduced the dry matter during the whole period (P < 0.05). The results of blood parameters showed there was no significant difference in the levels of cholesterol, triglyceride, proteinuria, urea and albumin in calves fed with experimental diets. However, experimental diets had a significant effect on glucose content (P < 0.05). The number of white blood cells as well as the monocyte ratio of calves fed with 20 grams of CLA supplements increased significantly in the first month (P < 0.05). But in the second month it had no effect. Based on obtained results, 20 grams of CLA supplement and 250 mg per kg bodyweight, the Aloe vera gel, is isolated on the ration of the calves, and is more effective on the tested parameters.

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