Egyptian Association for Sheep and Goats
Egyptian Journal of Sheep and Goats Sciences
2090-0386
9
1
2014
04
01
SELCTION INDEX FOR SOME BODY MESUREMENTS TOWARDS IMPROVING MILK PRODUCTION IN DHOFARI GOAT
1
8
26749
10.21608/ejsgs.2014.26749
EN
El-Wakil, Salwa
I.
Animal and Poultry Breeding Dept., Desert Research Centre, El-Matareya, Cairo, Egypt.
T. A.
Fooda
Buffalo Breeding Research Dept., Animal Production Research Institute, Dokki, Giza, Egypt.
Journal Article
2019
02
10
ABSTRACT<br />The present study investigate the possibilities of improving milk production in Dhofari goat raised<br />at Salalah of Sultanate of Oman through selection index containing body weight and dimensions at<br />birth. Records of 190 Dhofari does, daughters of 35 sires were available for this study. During two<br />successive years, data were collected on the same animal at birth (birth weight, BW; body length, BL;<br />body height at withers, BH; heart girth, HG and rear girth, RG) and after the first lactation season<br />(total milk yield, TMY). The present study estimated genetic and phenotypic parameters for the<br />studied traits and constructed 19 selection indices to predict TMY in Dhofari goat.<br />The present study estimated averages of BW, BL, BH, HG, RG and TMY as 2.9 kg, 31.4 cm, 34.7<br />cm, 33.6 cm, 37.0 cm and 50.0 kg, respectively. Among body dimensions, HG and RG were more<br />variable than BL and BH. Heritability estimates for all studied traits were little and ranged from 0.002<br />to 0.1. The correlation coefficients among all studied traits were genetically high and phenotypically<br />low. Genetic correlations between TMY and all live body measurements were close to one and much<br />higher than the corresponding phenotypic ones. Genetically and phenotypically, TMY had positive<br />correlations with BW, BL and BH and negative ones with HG and RG. The maximum accuracy of the<br />full index was 0.45. The greatest improvement in TMY was +0.25 kg. Selection on all indices reduced<br />HG and RG. Selection on I13 while reducing HG (-0.31 cm) and RG (-0.42 cm), it increases the size of<br />animal probably through BL (+0.11cm) and BH (+0.18 cm). The present study concluded that the<br />simplified selection index (I13) utilizing individual kid performance (HG and RG at birth) is the most<br />efficient (rTI =0.38), attain adequate improvement in TMY (+0.21 kg), less expensive and being about<br />13% more efficient in the improvement than direct selection for milk yield alone compared with the<br />other studied indices. Thus, I13 can be used as a selection criterion for the simultaneous improvement<br />of milk and meat production in Dhofari goat.
Egyptian Association for Sheep and Goats
Egyptian Journal of Sheep and Goats Sciences
2090-0386
9
1
2014
04
01
GENETIC IMPROVEMENT OF WEANING WEIGHT IN BARKI SHEEP USING NUCLEUS BREEDING SCHEME
1
11
26751
10.21608/ejsgs.2014.26751
EN
Manal
El Sayed,
Department of Animal Production, Faculty of Agriculture, Ein Shams University, Cairo, Egypt.
Salwa I.
El-Wakil
Animal and Poultry Breeding Department, Desert Research Centre, El Matareya, Cairo, Egypt.
A. M.
Ahmed
Animal and Poultry Breeding Department, Desert Research Centre, El Matareya, Cairo, Egypt.
R. R.
Sadek
Department of Animal Production, Faculty of Agriculture, Cairo University, Giza, Egypt.
A. A.
Nigm
Department of Animal Production, Faculty of Agriculture, Cairo University, Giza, Egypt.
Journal Article
2019
02
10
SUMMARY<br />The present study was undertaken to investigate the feasibility of establishing a genetic<br />improvement program for meat production in Barki sheep as a result of selection for weaning<br />weight. The present study utilized an original body weight data collected from the Barki sheep<br />flock raised in the north-western coast of Egypt that belongs to the Desert Research Centre from<br />1963 to 2005. A total of 1046 animals (542 females and 504 males) progenies of 163 sires and 557<br />dams were included in the analyses.<br />The Monte Carlo simulation technique was utilized to construct a three-stratum nucleus<br />breeding scheme consisting of a nucleus flock linked with five multiplier flocks which were<br />consequently linked with commercial flocks of the producers. Such structure was replicated three<br />times for higher accuracy. Moreover, mating was simulated for two successive seasons in the<br />multiplier and commercial flocks and for three successive seasons in the nucleus flock. Two<br />scenarios were simulated whereas the improvement occur without (scenario-1) and with (scenario-<br />2) dissemination of sires from the nucleus flock.<br />Results indicated that weaning weight breeding values of sires, dams and offspring as well as<br />average weaning weight in the nucleus flocks were generally exceeding those corresponding values<br />in the multiplier and commercial flocks. Breeding values as well as average weaning weight tended<br />to increase as season advanced and being higher in scenario-2 than in scenario-1. Producers of the<br />multiplier and commercial flocks would accomplish higher breeding values as well as average<br />weaning weight in the first season as soon as they shift from scenario-1 to scenario-2. The present<br />study showed that it is technically feasible to implement nucleus breeding schemes in providing<br />improved sires with higher weaning weight breeding values for the genetic improvement of meat<br />production in Barki sheep.
Egyptian Association for Sheep and Goats
Egyptian Journal of Sheep and Goats Sciences
2090-0386
9
1
2014
04
01
EVALUATION OF DIRECT AND MATERNAL (CO) VARIANCE COMPONENTS AND HERITABILITIES FOR SOME BODY WEIGHTS AND GROWTH TRAITS IN BARKI SHEEP
1
10
26752
10.21608/ejsgs.2014.26752
EN
El-Wakil, Salwa
I.
Animal and Poultry Breeding Dept., Desert Research Centre, ElMatareya, Cairo, Egypt.
S. M. A.
Gad
Animal and Poultry Breeding Dept., Desert Research Centre, ElMatareya, Cairo, Egypt.
Journal Article
2019
02
10
ABSTRACT<br />The present study was conducted to investigate the importance of maternal effects on some<br />body weights and growth traits in Barki sheep. Body weight records and pedigree information of<br />3189 lambs progenies of 186 sires were taken from the Barki sheep flock of the Desert Research<br />Centre maintained at two research stations; Ras Elhekma (from 1963 to 1972) and Maryout (from<br />1973 to 2004). The present study dealt with body weights at birth, BW, weaning, 120 days, WW<br />and yearling, 360 days, YW as well as average daily gain from birth to weaning, DGBW and from<br />weaning to yearling, DGWY. (Co) variance components and the corresponding genetic parameters<br />were estimated by fitting a series of six animal models using the MTDFREML program. These<br />models included the significant fixed effects together with the animal, sire and dam as random<br />effects. Such models were fitted for each studied trait and differed in ignoring or including various<br />random effects. Log-likelihood ratio tests were conducted to determine the most suitable model for<br />the studied traits.<br />Results indicated that the animal model which includes only direct genetic effect was the most<br />appropriate one. Direct heritability estimates ranged from 0.10 to 0.36 for BW, 0.13 to 0.30 for WW,<br />0.07 to 0.23 for YW, 0.13 to 0.26 for DGBW and 0.08 to 0.10 for DGWY. The corresponding values<br />for maternal heritability ranged from 0.18 to 0.20, 0.12 to 0.19, 0.12 to 0.19, 0.10 to 0.17 and 0.01<br />to 0.07, respectively. It is obvious that maternal influences were generally higher for BW, WW and<br />YW than the respective direct ones. The direct and maternal environmental components tended to<br />increase as age advanced from birth to yearling. The correlation between direct and maternal<br />genetic effect ranged from 0.07 to 0.35 for the studied traits except for DGWY (-0.72). Although<br />total direct components has a major contribution (82%) to the phenotypic variance, total maternal<br />components controls the remainder of about 20% and being relatively constant at that level to the<br />yearling stage which imply the importance of maternal influences on growth traits of Barki sheep.<br />The impact of maternal effects on BW appeared to be mainly genetic and tended to decline as age<br />advanced. The current investigation advocates that selection process should account for both direct<br />and maternal genetic effects to increase the accuracy of genetic evaluation and enhance the genetic<br />gain for growth traits in Barki sheep.
Egyptian Association for Sheep and Goats
Egyptian Journal of Sheep and Goats Sciences
2090-0386
9
1
2014
04
01
Relationship Between Somatic Cell Count and Udder Health in Damascus Goats
1
12
26754
10.21608/ejsgs.2014.26754
EN
Doaa, F.
Teleb
Sheep & Goat Research Department, Animal Production Research Institute, Ministry of Agriculture and Land Reclamation, Dokki,. Giza, Egypt.
Hafasa, F. H.
Youssef
Sheep & Goat Research Department, Animal Production Research Institute, Ministry of Agriculture and Land Reclamation, Dokki,. Giza, Egypt.
Azza M.
El-Baz
Dairy Microbiology Research Department, Animal Production Research Institute, Ministry of Agriculture and Land Reclamation, Dokki,. Giza, Egypt.
M. A.
El-Sherbieny
Biotechnology Research Department, Animal Production Research Institute, Ministry of Agriculture and Land Reclamation, Dokki,. Giza, Egypt.
Journal Article
2019
02
10
ABSTRACT<br />This study aimed to investigate the relationship between SCC, milk yield and composition in Damascus goats in Egypt, as well as, to evaluate the validity of using SCC for monitoring early udder infection.<br />A total of 204 milk samples were collected at mid lactation (June 2013) from both halves of udders of 51 Damascus goats. Milk bacteriological examination was performed using all half milk samples of morning milking, while percentage of fat (F), total protein (P), lactose (L), total solid (TS), solid not fat (SNF) and SCC were estimated in all collected samples of morning and evening milking. In the present study, 68.3% of the udder half were bacteriologically free of mastitis (healthy), while 31.7% was infected. Seven types of microorganisms were isolated from the milk of Damascus goats. Intermammary infection (IMI) was categorized as 1- healthy (68.3%), 2- infected with single major pathogen (10.9%), 3- infected with single minor pathogen (7.9%), 4- infected with double major pathogens (2.97%), 5- infected with double minor pathogens (0.99%) and 6- infected with one major pathogen plus one minor pathogen (8.9%).<br />Milk yield was significantly higher in healthy than in infected goats, while insignificant changes were recorded on the percentage of protein, fat, lactose, total solid, solid not fat and SCC. Meanwhile, a negative insignificant correlation was detected between milk yield and SCC. Results showed that the highest milk yield was recorded in the 5th parity, while the lowest observed in the 1st parity. Moreover, percentages of protein, total solids and solids not fat were significantly higher for Damascus goats in the 2nd parity than other parities, with a parallel, but insignificant, increase in fat content. High SCC scores combine with alteration in milk composition, where protein and solid not fat percentage increased and lactose percentage decreased with the increase of SCC in milk (log SCC ranged from 6.51 to 7.25). Although, a threshold of 1,000,000 cells /ml showed the best indication for IMI, this study showed that high SCC does not always reflect mastitis probably due to the apocrine secretion in goats. Animals with elevated SCC should declare positive mastitis after successful isolation and identification of bacteria causing mastitis. Nevertheless, in case of suspected udder infection, SCC in goat' milk could be suitable as early and cost-effective screening parameter till initiate further analysis.
Egyptian Association for Sheep and Goats
Egyptian Journal of Sheep and Goats Sciences
2090-0386
9
1
2014
04
01
PRODUCTIVE AND REPRODUCTIVE PERFORMANCE OF GOATS AS AFFECTED BY L-TYROSINE ADMINISTRATION 2- Productive performance and some blood metabolites during breeding period of Zaraibi does
1
15
26756
10.21608/ejsgs.2014.26756
EN
A. A.
ABU EL-ELLA
Animal Production Research institute, Ministry of Agriculture, Dokki, Giza. Egypt.
E. S.
EL-GOHARY
Animal Production Research institute, Ministry of Agriculture, Dokki, Giza. Egypt.
T. M.M.
ABDEL-KHALEK
Animal Production Research institute, Ministry of Agriculture, Dokki, Giza. Egypt.
A. M.
ABDEL-SAMEE
Suez Canal University, Faculty of Environmental Agricultural Sciences, El-Arish, North Sinai, Egypt.
Journal Article
2019
02
10
ABSTRACT<br />A total of 30 Zaraibi does aged 2-4 years and weighed 35-40 kg were used to define the influence of oral administration of L-tyrosine on milk yield and composition, some blood metabolites during breeding period in pregnant and non-pregnant doe as indicator for the physiological status of animals are also studied. Does were randomly assigned to three equal groups (10 each). The first group (G1): was kept as a control (without L-tyrosine treatment). The second (G2) and third (G3) groups were received orally two doses of L-tyrosine at levels 1.0 and 1.5gm / 10 kg live body weight, respectively. L-tyrosine was given as two doses, one single dose before one week from the beginning of breeding period and the other dose three days post kidding.<br />Results indicated that milk yield and 4% fat correct milk (FCM) of does treated with 1.5 g L-tyrosine (G3) were significantly (P≤0.05) higher than those of does treated with 1.0g L-tyrosine (G2) and control (G1) groups. Fat, protein and lactose percentages in milk from does treated with L-tyrosine groups were significantly (P≤0.05) higher as compared to the control group (G1).<br />L-tyrosine administration significantly (P ≤ 0.05) increased blood albumin and glucose concentration compared to the control does. Meanwhile, blood globulin was decreased significantly due to L-tyrosine administration. The concentrations of urea-N and creatinine decreased as a result of L-tyrosine treatments compared to the untreated does.<br />Total protein, globulin and urea –N decreased (P ≤ 0.05) till 8 days after mating where it increased gradually up to 18 days after mating and decreased again at the end breeding period. The effect of breeding period on albumin and A/G ratio were not significant. Values of glucose were significantly (P ≤ 0.05) increased at 8 days after mating and then decrease (P ≤ 0.05) in estrous period. While, obtained values of blood plasma creatinine were higher in estrous period as compared to other breeding period. In pregnant does, there were significantly (P ≤ 0.05) lower concentrations of total protein, urea, glucose, triglyceride, calcium and Phosphorus and significantly (P ≤ 0.05) higher concentrations of total lipids and cholesterol in relation to non pregnant does. The changes of Plasma albumin, creatinine, AST, ALT, alkaline phosphates and zinc between pregnant and non pregnant does were not significant.
Egyptian Association for Sheep and Goats
Egyptian Journal of Sheep and Goats Sciences
2090-0386
9
1
2014
04
01
EFFECT OF SOYBEAN LECITHIN-BASED SEMEN EXTENDER ON FREEZABILITY AND FERTILITY OF RAHMANI RAM SPERMATOZOA
1
8
26759
10.21608/ejsgs.2014.26759
EN
Khalifa, E.
I.
Animal Production Research Institute, Sheep and Goat Research Department, Ministry of
Agriculture, Dokki, Giza, Egypt.
M. A. M.
Abdel-Hafez
Animal Production Research Institute, Sheep and Goat Research Department, Ministry of
Agriculture, Dokki, Giza, Egypt.
Journal Article
2019
02
10
ABSTRACT<br />This experiment was designed to compare the protective action of soybean lecithin and egg<br />yolk on cryopreservation and fertility of ram spermatozoa. The semen ejaculates were collected<br />from three fertile rams, aged over 2.0 years and weighed round 65 kg, using artificial vagina. Two<br />extenders were prepared, 1st served as the control and contain15% egg yolk with Tris-citric acid<br />(TCEY).The second extender used 3.5 % soy lecithin to complete Tris-citric acid (TCSL). After<br />primary evaluation of ejaculates, the semen samples were extended at the rate of 1 semen: 4<br />dilutes. The packed diluted semen was used to perform three experiments with TCEY and TCSL<br />extenders. In the 1st experiment parameters such as progressive motility, viability and damaged<br />acrosome were assessed after equilibration period at 5°C for 3 hours. Concerning the 2nd<br />experiment, progressive motility, viability and abnormal acrosomes were evaluated after the<br />freezing-thawing process. In the 3rd experiment a fertility test with post-thawing TCEY and TCSL<br />extenders was performed. The results in the 1st experiment indicated that addition of 3.5% soylecithin<br />increased (P>0.05) progressive motility, viability and reduced abnormal acrosomes of<br />spermatozoa after equilibration period compared to 15% egg yolk extender. Although, TCEY and<br />TCSL extenders in experiment 2nd showed non-significant differences in post-thawing sperm<br />characteristics, the TCSL had improved post-thawing progressive motility, viability and rate of<br />damaged acrosome of ram spermatozoa. In the 3rd experiment a better pregnancy rate (P<0.05)<br />with TCSL (63.64 %) was observed compared to sperm preserved in TCEY (54.55 %). Based on<br />these results, we conclude that use of a chemically defined, soy-based medium improves long-term<br />motility and capacitation status of frozen–thawed ram' spermatozoa compared with<br />cryopreservation in a traditional protection (egg yolk) extender. Furthermore, the study clarify that<br />soybean lecithin could be able to increase proportions of viable frozen-thawed spermatozoa which<br />reflected positively on fertility rates.
Egyptian Association for Sheep and Goats
Egyptian Journal of Sheep and Goats Sciences
2090-0386
9
1
2014
04
01
GROWTH PERFORMANCE, SOME RUMEN AND BLOOD PARAMETERS OF GROWING RAHMANI LAMBS FED RATIONS CONTAINING TRITICALE OR BERSEEM SILAGES AND THEIR MIXTURE.
1
10
26763
10.21608/ejsgs.2014.26763
EN
G. I.
El-Emam
By – products Utilization Research Department, Animal Production Research Institute (APRI),
Agricultural Research Center (ARC), Dokki Giza, Egypt.
Y. H.
Hafez
Sheep and Goats Research Department, APRI, ARC, Dokki, Giza, Egypt.
H. R.
Behery
Sheep and Goats Research Department, APRI, ARC, Dokki, Giza, Egypt.
E. I.
Khalifa
Sheep and Goats Research Department, APRI, ARC, Dokki, Giza, Egypt.
E. I.
Shehata
Sheep and Goats Research Department, APRI, ARC, Dokki, Giza, Egypt.
M. E.
Ahmed
Sheep and Goats Research Department, APRI, ARC, Dokki, Giza, Egypt.
Journal Article
2019
02
10
ABSTRACT<br />Aiming to evaluate triticale silage compared with berseem silage and there mixture, a growth<br />trial was carried out on 21 Rahmani lambs, divided to three similar groups, 7 each. All animals<br />were fed concentrate feed mixture (CFM) to cover 50% of their requirement recommended by<br />NRC (1985) for sheep, along with ad libitum offered silage. Berseem silage offered to G1, silage<br />mixture of 50% berseem plus 50% triticale was given to G2 and sole triticale forage silage to<br />G3.The feeding trial lasted 112 days using randomized complete block design. In addition, three<br />lambs of each group were involved in digestion trial to estimate digestibility and feeding values of<br />the experimental rations.<br />Results show that CF, EE, NFE and NDF contents were higher, while CP, ash, ADF and ADL<br />were lower in triticale silage than berseem silage. The chemical composition respecting all<br />nutrient contents of silage mixture (berseem/ triticale) intermediated values of either berseem or<br />triticale silages. Ruminal pH values were not significantly affected by treatments, while ammonia-<br />N and microbial protein tended to be markedly higher with both berseem and berseem/triticale<br />silages compared with triticale silage rations. But, ruminal TVF's concentration post-feeding<br />showed the lowest values (P<0.05) with berseem silage ration compared with triticale silage one.<br />Molar proportion of ruminal VFA's showed higher (P<0.05) acetate and propionate and lower<br />(P<0.05) butyrate with the mixture silage ration (G2) than the other rations. Blood serum urea<br />concentration was significantly higher with berseem silage ration (G1), while glucose<br />concentration was significantly higher with triticale silage ration (G3), compared to others. The<br />digestion coefficients of most nutrients (CF, CP and EE) were significantly higher with G2 than<br />those of G1 and G3 rations. The TDN of G2 ration was the highest (P<0.05) among the dietary<br />treatments. The DCP values were more or less equal regarding G1 and G2 where both had higher<br />DCP values than that of G3 (P<0.05). The daily DMI and TDN showed more values with mixed silage than sole silages, while DCPwas least with triticale silage. Daily body gain was significantly more with mixed silage (145.9g/h, G2) than both sole silages (133.4 g/h, G1 & 130.1 g/h, G3)Feed conversion efficiency, based on DM, TDN and DCP, were better with G2 (8.77, 5.72 and0.93, respectively) in comparison with G1 and G3 rations.
Egyptian Association for Sheep and Goats
Egyptian Journal of Sheep and Goats Sciences
2090-0386
9
1
2014
04
01
CONGENITAL OMPHALOCELE AND ITS SURGICAL MANAGEMENT IN LAMB
1
4
26765
10.21608/ejsgs.2014.26765
EN
Fazili, M.
R.
Faculty of Veterinary Sciences and Animal Husbandry , Sher-e-Kashmir University of Agricultural Sciences and Technology of Kashmir (SKUAST-K), Shuhama, Srinagar, Kashmir, India.
H. K.
Bhattacharyya
Faculty of Veterinary Sciences and Animal Husbandry , Sher-e-Kashmir University of Agricultural Sciences and Technology of Kashmir (SKUAST-K), Shuhama, Srinagar, Kashmir, India.
S. H.
Dar
Faculty of Veterinary Sciences and Animal Husbandry , Sher-e-Kashmir University of Agricultural Sciences and Technology of Kashmir (SKUAST-K), Shuhama, Srinagar, Kashmir, India.
H.
Athar
Faculty of Veterinary Sciences and Animal Husbandry , Sher-e-Kashmir University of Agricultural Sciences and Technology of Kashmir (SKUAST-K), Shuhama, Srinagar, Kashmir, India.
Journal Article
2019
02
10
SUMMARY<br />A newborn, female, lamb was presented for treatment of congenital omphalocele. The ovoid mass<br />(diameter three inches) hanging from the umbilicus was covered by hairless continuation of the<br />umbilical cord. Herniorrhaphy was successfully performed after enlarging the umbilical opening under<br />sedation using diazepam (@ 0.20 mg/kg) and local infiltration anaesthesia with 3.5 ml lignocaine<br />hydrochloride (1%). The lamb recovered completely and was healthy up to seven months observation<br />period. It is concluded that the surgical treatment of lambs with congenital omphalocele have good<br />prognosis provided they are presented promptly without mutilation of the protruding mass.<br />Key Words: congenital, omphalocele, lamb, herniorrhaphy