Productive and Reproductive Performance and Metabolic Profile of Barki Ewes Supplemented with Two Forms of Probiotics as Feed Additives.

Abstract

Present study aimed to evaluate the impacts of probiotic mixtures as a biological feed additive on the reproductive and productive performance of Barki ewes under desert conditions. A total number of 100 Barki ewes were randomly assigned and divided into five equal groups (20 each) to evaluate the effect of different levels and forms of biological additives mixtures on Barki ewes productivity. The first mixture of probiotic added as liquid forms (Mixture Probiotic Liquid, MPL), while the second added as powder forms (Mixture Probiotic Powder, MPP). The two forms of enzymes used at two levels (6 and 10ml or g/h/d). The two additives formed of exogenous enzymes and obtained through an anaerobic fermentation process of Ruminococcus flavefaciens. The results indicated that feed intake was higher in MPL and MPP treated groups compared to control group. During pregnancy and lactation stages, MPL and MPP groups recorded significantly increase in ewes body weight. The conception and lambing rates were tended to differ between groups, but the number of lambs born alive was significantly higher in MPP groups [19 lambs for group 2 (G2) and 18 lambs for group 3 (G3)] followed by MPL groups (16 and 18 lambs for group 4 (G4) and group 5 (G5), respectively), while the control group recorded 18 lambs. The mortality rate from birth to weaning decreased (P<0.05) in treated groups with 5%, 5%, 0% and 5% for G2, G3, G4 and G5, respectively, while the mortality rate increased (P<0.05) by 11% in control group. The milk yield tended to increase in MPP then MPL groups. The birth and weaning weights as well as average daily gain increased (P<0.05) in MPL and MPP groups. Thyroid hormones T 3 and T 4 concentrations increased (P<0.05) with enzymes mixtures supplementations. In conclusion, under the semi-arid conditions, supplementation of exogenous enzyme preparations of MPL and MPP to sheep rations, may improve weaning weight and daily gain of lambs as much as live body weight and milk production of ewes.

Productive Performance of Barki Ewes Fed Mixtures of Salt Tolerant Plants With Protected Fat or Yeast Under Desert Conditions

“…Contrarily, Ghoniem and Atia (2020) pointed out to higher (P<0.05) daily milk yield for lactating ewes fed ration supplemented with protected fat than that of the control ones. In general, the average milk production in the present study (503-592 ml/h/d) were within the normal range (510-720 ml/h/d) of Barki ewes species which detected by other numerous authors (El-Hawy et al, 2019 andHelal et al, 2018b) under desert conditions.…”

Effect of Nutritional Flushing Using Long-Term Energy and Protein Supplementation on Growth Performance and Reproductive Parameters of Doyogena Ewes in Ethiopia

“…Breed type and the method and duration of flushing could explain these differences. The treatment groups (T2, T3, T4) showed a 100% conception rate, which is higher than the 66.6% conception rate reported in Awassi ewes fed 500 g concentrate/head/day for three weeks prior to mating [ 44 ], and the 52–68% conception rate for Barbarine ewes supplemented with a diet of 0.5 kg of hay and 0.5 kg of concentrate per ewe per day [ 45 ]. The amount of supplemented feed may explain the differences.…”

Pathological and Bacteriological Assessment of Reproductive Organ Disorders in She Camels in Somali, Eastern Ethiopia

“… 17 Some investigations conducted on reproductive organs have identified several types of uterine disorders that may result in reduced fertility in camelids. 18 , 19 The types and occurrence of reproductive disorders in she-camels are investigated in limited studies, particularly those that relate clinical manifestations with the actual causes of infertility. 20 The real causes of camel infertility have been suggested to be uterine infections, ovulation failure, and poor husbandry practices.…”