Productive Performance of Growing Barki Lambs Fed on Jojoba Meal under Desert Conditions | ||
| Journal of Animal and Poultry Production | ||
| Article 6, Volume 9, Issue 2, February 2018, Pages 103-113 PDF (344.75 K) | ||
| Document Type: Original Article | ||
| DOI: 10.21608/jappmu.2018.38931 | ||
| Authors | ||
| Ahlam R. Abdou; Abeer M. El-Essawy | ||
| Animal and Poultry Nutrition Department, Desert Research Center, El-Matarya, Cairo, Egypt. | ||
| Abstract | ||
| The study was carried out in Animal Production Research Unit in the Sustainable Development Center for Matrouh Resources (SDCMR), Matrouh Governorate, belonging to Desert Research Center, El-Matarya, Cairo, Egypt. The main problem of utilizing Jojoba meal as a feed source is the presence of simmondsin as a major toxic compound with other anti –nutritional factors. The main objective of the present study was to assess the influence of replacing (70%) of undecorticated cotton seed meal (CSM) of concentrate feed mixture (CFM) with Jojoba meal (JM) (Simmondsia chinensis), either as untreated JM (UJM) (R2) or treated biologically with lactic acid bacteria (JMB) (R3) or treated chemically with 70% isopropanol (JMI) (R4) on the concentration of anti –nutritional factors ANFʼs ( mainly simmondsin), dry matter intake (DMI), daily gain, digestion coefficients, rumen fermentation, some of blood biochemical parameters and consequently animal performance. Control group (R1) fed on traditional CFM. Twenty four Barki lambs weighed 24 kg 6 months old were used in this experiment. Obtained Results indicated that both treatments (biologically or chemically) showed a positive effect in reducing ANFʼs while chemical composition of all the experimental rations had comparable values. Detoxified JM with bacteria or with isopropanol showed the highest feed intake as dry matter, crude protein (CP), total digestible nutrients (TDN) and digested crude protein (DCP) with significant differences . Consequently, the average daily gain (ADG) g/h was descendingly arranged as follow : lambs fed on (R4), followed by those fed on (R3), control lambs (R1) then those fed on (R2).The values of DM,TDN and DCP intake /kg gain indicated that lambs fed JMI were the highest , followed by R1 fed lambs then JMB fed lambs, while the least values for lambs fed on UJM. Rumen parameters as pH, ammonia –Nitrogen (NH3-N) and volatile fatty acids (VFAʼs) concentrations were affected with treatments. No significant differences were detected in serum metabolites, except that for liver enzymes (AST and ALT). Since both treatments showed elevated activities in all JM fed animals, compared with control one. Generally, the endocrine function tests (T3 and T4) showed a significant elevations in lambs fed JM rations either treated or untreated. It could be concluded that, chemical or biological treatments of Jojoba meal with isopropanol or with lactic acid bacteria could offer a good solution for the reduction or elimination of toxic and bitter simmondsin and some of phenolics from Jojoba meal and could be used in animal nutrition without negative effects on animal performance. | ||
| Keywords | ||
| jojoba meal; biological treatment; productive performance; chemical treatment; lambs; anti-nutritional factor | ||
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