Studies on rabbit meat quality recovered from pasteurellosis

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1 Studies on rabbit meat quality recovered from pasteurellosis Ibrahim I.S., Gergis S.M., Khodier M.H., Hamdy M.M., Abd El Latif H.A. in Baselga M. (ed.), Marai I.F.M. (ed.). Rabbit production in hot climates Zaragoza : CIHEAM Cahiers Options Méditerranéennes; n pages Article available on line / Article disponible en ligne à l adresse : To cite this article / Pour citer cet article Ibrahim I.S., Gergis S.M., Khodier M.H., Hamdy M.M., Abd El Latif H.A. Studies on rabbit meat quality recovered from pasteurellosis. In : Baselga M. (ed.), Marai I.F.M. (ed.). Rabbit production in hot climates. Zaragoza : CIHEAM, p (Cahiers Options Méditerranéennes; n. 8)

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3 _------_ Rabbits are raised for a variety of reasons and virtuall found every country, Rabbit meat is extremely low in calories and high in protein content and easy to digest and this should be in mind when feeding children, senior citizen or those with weak stomach (, In Egypt, great attention has been given to rabbit breeding and production since last years. Sever factors currently limi th economic viability of rabbit production. A major factor is that rabbits are susceptible to several diseases that reduce production. Pasteurellosis is considered one of the most important diseases rabbits ( -- gji, 1. It is highly contagious disease rabbits including acute rhinitis or cold chronic rhinitis ( snuffles, nasal!catarrh ) bronchopneumonia, abscess, middle ear disease and genital infection. Rabbit meat mainly compüsed of % - % protein, - % fat and - % moisture ( & al-, ' Newzeland white rabbit meat, the moisture was %, protein was %, ether extract % and ash %, 1989), he added that the percentage of carcass weight, front parts weight, lion weight, hind part weight, offals weight and Giblet. weight were,,,, and respectively, while the dressing percentage '(19741 found that dressing percentage was 46.6 %. The carcass yield was

4 found to. be - % at Kg life body weight and - 60 % at Kg living body weight ( Bedinerz, (q9821 found that the dressing and Giblet percentage were % and. % respectively for Newzeland white rabbits. The other dressing percentages were reported by and %), and (1984) (53.6 %).... nn.altocïda The strain used for experiment infection of rabbits was isolated from locally infected rabbits in Aerobic Bacterial Vaccines Dept., Vet. Serum and Vaccine Research Institute, Abbasia, Thirty two white Newzeland rabbits about 2 months age and average weight of gm were used in'this study. These animals were divided into groups. The first group, consisted of 16 rabbits, was subjected to experimental infection with 0.5 ml of Pasteurella multocida. The second group were kept animals were examined 12 hours post inoculation to detect rising of temperature. - Treaernerrt The inoculated rabbits were treated with ampicillin a dose in 0.1 ml / body weight by / route for 5 successive days.

5 ~ j -.. t t t t meat _e_t _al. (19821 t and liafez (19t34.1 and Abdel Gawad (19881 t t t meat ( t t ) ( A.U.A.C,, 1980 ). ( Hore and, (IO

6 ... Estimation slaughtered data in normal control rabbits presented in Table ( 1 ) showed that the mean values were within the normal growth limits which agreed with Grant and Zefnik (19741, Bedinerz and (1975) 8 _St 34- (1982) 8 and and Zucchi (1984) and (1989) where Grant and Zelnìk (19741 recorded a dressing percentage in Newzeland white rabbits 46.6 % ; Bedinerz and (1975) mentioned that the carcass yield was ( 52 - % 1 Kg. Live body weight ; al, (1985) whom found that the dressing ánd Giblet percentage were rabbits ; % and 8.5 % respectively for Newzeland white 17983) who stated that the dressing percentage in Newzeland white rabbits was % ; Zucchi (1984) reported a % dressing percentage in white Newzeland rabbits and ' (19891 who reported that the percentage of carcass.weight front part weight, lion weight hind part weight o offals L31ght and Giblet weight were %, %, % 18.7 % 49.7 % and % respectively while the slaughter data in rabbits under experiment showed highly significant variation than control groups (.< ) in living body weight carcass weight shoulder and thorax lions and flank rump and thigh Giblet weight and dressing percentage over the period of experiment except the dressing percentage which showed significant difference ( < ) on the days post infection and treatment. This difference could be attributed to t

7 stress of infection with Pasteurella multocida which extended to exert a noticeable effect upon the living body weight and the weight internal organs, this attribution agreed with -- who concluded that the enzootic pneumonia due pasteurellosis in rabbits lessens body weight and' results in efficient feed utilization. The Table ( 1 showed the chemical composition of the test and control rabbits slaughtered at,, # and 18 days post infection with Pasteurella multocida and treatment was evaluated Non significant changes in the percentage of moisture, protein and ash were noted bet:ween control and experimental rabbits. The. fat percentage was significant in test rabbïts during-the na and days post infection and treatment ( c 1. The data of normal control rabbits agreed with those (f9861 # az- (79781 who mentioned that the protein percenta was %, moisture % ether extract % and ash %. The difference in fat content in the muscle than the control reflected the degree of stress resulted from pasteurella infe which had great influence on meat quality. Table ( 3 1 showed the sensory evaluation of rabbit meat wh revealed a slight significant difference ( < 1 from the control rabbit meat which was always better in all tasting items. These variation could be attributed to the fact that the mu

8 animals under stress pasteurella infection losses considerable amount fat which is responsible for the appearance ( Cross, 1975 ), tenderness (, , flavour and aroma t _e_t, 1965 l. Table ( ) showed that the net income in case of infected and treated rabbits could be considered useless while in case normal rabbit the net income was valuable... From the result of this study, it is import.ant to discover the disease early and carried out treatment with the most suitable antibiotic, it is also important that to control the disease before its appearance. by getting off all diseased rabbits and vaccination of healthy ones. It could be recommended that'treated rabbits showed slaughtered three weeks latter to give for chance reconstitution muscle and fat content which repair the taste, appearance tenderness and fiavour the carcass.

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13 Abdel - Gawad, (1988) : Studies on rabbits feeding El-Minia Governorate. M. Sc. Thesis, Fac. Agric. El-Minia. Univ. Egypt. A- O, A, C, (1980) : Official Methods Analysis. Association Official Analytical chemists. Washington, C. ( th Ea. ). Bedinerz, W, and, A (19751 : Carcass quality Newzeland white and California rabbi and their crosses. Roczniki Nauk Ralniczych.,, : - Mut. Abst. and Rev., Benntt, B. (1986) :, : Abst. Cooking ratbbit, raising rabbits. The modern way, Ed. - Cross, ; Abraham, C, and Bvnice, (19751 : Variation in the amount, distribution and texture of intramuscular fat within muscles of the 'beef carcass. Anim. Sci.,, : - and Zucchi, (19841 : A breed study the main carcass characteristics of rabbits. Rivista 'di Coniglicoltura,,,, - Anim., Breed Abst.,, Abst.

14 , and, A, (19701 : Influence total lipid and fatty acid composition upon the palatability of three bovine muscles. Anim. Sci., : Grant 3, and Zelnik, (19741 : Fertility and growth Newzeland in white and classification rabbits. Anim. Breed Abst, 42 : A, ;,'C, S, and Winfree (19721 : Effect fat deposition on beef palatability. Animal Sci., 1,, S, ; and Cheeke H, (19821 : Carcass and meat characteristics of Flemish Geant and Newzeland white purebred and twminal cross rabbits. Animal sci., 54 -, and, S. S, : Inheritance broiler trails innewzeland white rabbits. Indian Animal Sci., 12 : - Anim. breed Abst. Sci. :, (19891 : Studies on some production traits in rabbits under the t, environmental condition on El-Minia Governorate. M. Thesis, Fac. Agric., El-Minia Univ., Egypt.

15 ; Chen, C. ; Sunki, G, and Johnson, CJ, (1978) : Effect weaning on slaughter ages upon rabbit meat production. J. Anim. Sci. 46, , ; Tune and Tucker (19651 : Influence of carcass maturity and marbling on the physiologicalandchemicalcharacteristicsofbeef palatability, fiber diameter and provimate analysis. J. Animal Sci. 24, : B, and (19711 : Enzootic pneumonia in rabbits naturally occurring le in lungs of apparently healthy young rabbits. Sap. 3. Vet. Rec., : , ; V, ;, ; Garbìghous Natural history of infection with Pasteurella multocida ; Gerald and Van (19831 : in rabbits. of the An. Vet. Med. Ass. Vol. 183 l1 : Sallam M, and (1989) : The effect of cross breeding post weaning and slaughter traits rabbits. Annals of Agric. Sci. Moshtohor Vol. No. :

Pneumonia in domestic rabbits in Egypt. Strain types and methods of control

Pneumonia in domestic rabbits in Egypt. Strain types and methods of control Gergis S.M. in Baselga M. (ed.), Marai I.F.M. (ed.). Rabbit production in hot climates Zaragoza : CIHEAM Cahiers Options Méditerranéennes;