Effect of Fattening Period on Growth Rate and Carcass Characteristics of Meriz and Local Black Goats a Thesis Submitted to the Council of the College of Agriculture University of Dohuk as a Partial (original) (raw)
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This study was carried out at the Animal Farm, Animal Production Department, College of Agriculture, University of Duhok, where 10 Meriz goats averaged 13.65 kg weight and 3-4 months old and 10 Black goats averaged 30.3 kg weight and 6 months old were randomly divided into two groups and allocated to be fattened for either 90 or 150 days. Result revealed that the daily gain, feed efficiency, dressing percentage based on live body weight, rib eye area and fat thickness, lean, fat and bone percentage averaged 98.73gm, 5.12 kg/kg, 46.96%, 9.44cm 2 , 1.15 mm, 64.07%, 16.89 % and 19.02 % respectively for Meriz, while the corresponding values for Black goat were 75.58 gm, 6.43 kg/kg, 49.42 %, 12.47 cm 2 , 1.75 mm, 63.73 %, 16.82 % and 19.44 %, respectively. No significant differences between 90 and 150 days fattening period was observed in all studied traits except some commercial cuts.
Effect of fattening period on growth rate and carcass charactristics of Meriz and black goats
Egyptian Journal of Sheep and Goat Sciences, 2010
This study was carried out at the Animal Farm, Animal Production Department, College of Agriculture, University of Duhok, where 10 Meriz goats averaged 13.65 kg weight and 3-4 months old and 10 Black goats averaged 30.3 kg weight and 6 months old were randomly divided into two groups and allocated to be fattened for either 90 or 150 days. Result revealed that the daily gain, feed efficiency, dressing percentage based on live body weight, rib eye area and fat thickness, lean, fat and bone percentage averaged 98.73gm, 5.12 kg/kg, 46.
The study was conducted to determine the effect of feeding diets, on growth performance and relationship between carcass measurements, slaughter weight and hot carcass weight, of 72 intact male desert bucks divided randomly into three groups; each group (24 males), the animals were slaughtered according to halal standard procedures. The results obtained indicated that correlation coefficients between slaughters weight and carcass measurements were significantly higher (P <0.01) and positive. In free grazing group correlation coefficients between hot carcass weight and carcass measurements were significantly (P <0.01) and positive. Also the relationship between slaughters weight and carcass measurements was significant and positive except internal chest length. In the group that grazing and supplemented with diets showed positive and significantly (P <0.01) correlation coefficients between hot carcass weight and carcass measurements and between slaughters weight and carcass measurements were significant and positive except carcass length. The zero grazing groups obtained non not significant correlation coefficients between hot carcass weight and carcass measurements except slaughter weight and external chest length.
Thirty two weaned (90 days) males (16) and females (16) native kids with an average live weight of 16.22±0.80 for males and 17.00 ±0.7 kg for females were used in this experiment. Each sex was divided randomly into two groups, the first (8 males and 8 females) was penned individually and fed on concentrate, and the second group (8 males and 8 females) was raised on pasture to be fattened and slaughtered at 20 kg or 30 kg. Result revealed that daily gain in weight averaged 75.65±5.54 g/day. No significant differences were observed due to the effect of sex, feeding system and slaughter weight on this trait. Male kids and those slaughtered at 30 kg were more efficient in converting feed than females and kids slaughtered at 20kg. Dressing percentage based on live weight and on empty body weight averaged 46.54 ±0.50 and 56.76 ± 0.44 %, respectively. Kids received concentrate and those slaughtered at 30 kg had significantly (p<0.05) higher dressing percentage than kids raised on pasture or slaughtered at 20kg. Kids slaughtered at 30kg had significantly (p<0.05) larger rib eye area and thicker fat than kids slaughtered at 20kg. Kids raised on pasture had significantly higher proportion of leg (31.8 vs. 29.98%) and lower proportion of shoulder (17.72vs. 19.92%) than kids received concentrate.
DergiPark (Istanbul University), 2015
This study was undertaken to measure the effect of fattening duration (60, 80, and 100 days) on growth performance and carcass characteristics of male kids from indigenous Hair and Honamlı goat breeds reared under intensive fattening systems in Turkey. Fattening duration had a significant effect (P < 0.001) on the fattening performance and a number of carcass characteristics of kids. An interaction was detected between genotype and fattening duration for average daily gain (ADG). Hair goat kids grew at a faster rate than Honamlı kids in the 20-40 day and 40-60 day fattening periods, but they maintained relatively similar ADGs within other fattening periods. On average, over the course of the fattening trial, Honamlı kids grew at an average daily rate of 209 g/head, while Hair goat kids grew at a daily rate of 231 g/head. Dressing percentage and carcass lean and fat percentages of kids increased (P < 0.05-0.001) with slaughter age and weight for both genotypes, whereas the percentage of bone decreased (P < 0.001) with each successive fattening period. No genotypic differences were detected for a number of carcass characteristics at the time of slaughter, with the exception of relatively higher (P < 0.01) fat deposit rates within the kidney and pelvic areas for Hair kids.
Growth and body composition in meat production of Omani Batina goats
Small Ruminant Research, 1996
Forty-five Omani Batina buck, wether and doe goats were reared from birth until slaughter at 11, 18 or 28 kg BW. They were ted ad libitum on a concentrate diet ( 16.5% CP) and Rhodesgrass hay (8.8% CP). Bucks were heavier than does at birth, had the fastest growth rates ( 118 g day -~) and reached slaughter weights earlier than wethers and does (85 g day -~ and 87 g day-~), respectively. Goats of all sexes had the maximum growth rates during the first month of age. At 28 kg BW, dressingout percentages (DO) for bucks, wethers and does were 54.4%, 55.9% and 55.5%, yielding carcasses of 14.1 kg, 14.7 kg and 14.0 kg, which contained 68.2%, 61.0% and 59.8% of muscle, 13.9%, 12.4% and 12.5% of bone and 12.1%, 20.2% and 19. 1% of fat, respectively. Weights of total body fat were 13.0%, 19.9% and 20.0% of empty body weight (EBW). Proportion of bone in carcass decreased, that of fat increased, whereas that of muscle was isometric in relation to EBW. Over the 11-28 kg BW range the proportion of total edible and total saleable portions of Batina goat increased from 58 to 62% and from 66 to 70%, respectively. Bucks had less fat and more muscle and bone than wethers or does at 28 kg slaughter weight. Over a range of 11-28 kg BW, within the total musculature of the carcass, the proportions of those towards the rear of the body and in distal limbs decreased with increasing BW. Bucks had higher muscle weight in the fore quarters than does which had more muscle in the proximal hind limb and those surrounding the spinal column. Some intrinsic muscles of the neck region were better developed in bucks than wethers and does. Ribs, pelvis and scapula of Batina goats grew at a rate relatively faster than other bones of the skeleton whereas limb bones grew at a slower rate than EBW. Bucks had higher proportions of fore and hind limbs but lower proportions of the axial skeleton than does at 28 kg BW. They also had longer humerus, radio-ulna and femur than does but there were few differences between the various sexes in width or circumference of bones. In general, the magnitude of change in proportions of individual muscles and bones between 11 and 28 kg BW or sex differences was small. Batina goats raised under a closed intensive system performed better than reported for this breed under traditional systems. They yielded lean carcasses (particularly intact males) and had high total edible and saleable proportions of the body. * Corresponding author. 0921-4488/96/$15.00 ~ 1996 Elsevier Science B.V. All rights reserved SSDI 0921-4488 (95)00762-8 ers in the less developed parts of the world. Production levels of Omani local goats under traditional systems are low in terms of growth rates and carcass yields. Consequently, they contribute only a small proportion of the total meat requirements and large numbers of live goats and sheep, as well as large amounts of chilled
Growth, body composition and carcass tissue distribution in goats of large and small sizes
Small Ruminant Research, 1998
A study was carried out to compare growth, composition and distribution of carcass tissues in male and female Omani Ž . Ž . Ž . goats of large Batina and small Dhofari body sizes. Goats had ad libitum access to Rhodesgrass hay 8% CP and a Ž . concentrate diet 16% CP from weaning until slaughter at either 11 or 18 kg body weights. Batina goats reached both Ž . Ž . slaughter weights earlier than Dhofari goats P -0.001 with males maximum of 147 grd growing faster than females Ž . Ž . maximum of 92 grd but Dhofari goats had higher growth rates relative to final body weight P -0.05 . Batina had higher Ž . proportions of head, skin, feet and lungs and trachea P -0.001 than Dhofari goats in which males had higher proportions Ž . Ž . Ž . of the testes in the empty body P -0.001 . Dhofari goats had higher P -0.01 dressing out percentage DO than Batina Ž . at 18 kg body weight in both males and females and 18 kg in males 55-58% and 51-52%, respectively . Dhofari had Ž . Ž . Ž . higher total body fat P -0.05 , total non-carcass fat P -0.001 and carcass muscle P -0.05 but lower carcass bone Ž . Ž . P -0.001 than Batina goats. They also had higher proportions of muscles in the proximal hind limb P -0.001 , around Ž . Ž . the spinal column P -0.001 , and abdominal wall P -0.05 but lower proportions of muscles in the proximal forelimb Ž . Ž . Ž . P -0.001 , distal forelimb P -0.001 , muscles connecting forelimb to thorax P -0.05 , intrinsic muscles of neck and Ž . Ž . thorax P -0.001 and total forequarter muscles P -0.001 than Batina goats. Dhofari goats had higher proportions of bone in the forelimb than Batina goats. Findings of this study indicated that the smaller Dhofari goat may be more efficient for meat production than the larger breeds like the Batina under Omani conditions. q 1998 Elsevier Science B.V.
TVelve weaned nrale klds from cach of Merlz and nutive goat were weighed and randomly assignod cqually into thrcc groups rccording to different fccrling regimen. Kids of ltt group had ad littitum access to conccntrate (lntcnslve), whcreas kitls in the 2*t group werc left at pasture for 45 days tnd then moved t0 the farm lo fed ad libitrtm conccntrtte (Scnti.intenslve). The 3',r group of klds wls froely grazcd at pesture (Extcnsivc), At thc end ofthe trail (90 days), alt kids were staughtcred and dresscd. The right side from each carsrss was l'&bricated into 8 major cuts for dlssection lnto lean, fat and bone. Welghtofcolnmercial cuts and thelr percentages ofthe carcass, percentage ofseparablc tean, frt and bone ln all crrts as well as in the right side of the carc,lss were not affectcd slgnlficantly by breed. The welght of commerclal cuts were signilicnntly (p<0.05) hervler Ih klds raised on intenslvrly or scmi-lntenslvely comparerl to those ralsed on pasture. lntenslvc and semi-lntenslve Meriz and natlve goat possessed a higher (P<0,0t) fat percentages (12,00 and t0,02% rcspcctively) rnd s lower (P<0.01) bone percentages (24.21 and 25,42%) than did ptrsture (3.05 nd34.07,/o),however, lean percentages were ilot dilfer rmong groups. It can b0 concluded that feeding klds in concentrate rcsults ln heavler crrcasscs, rntl heavily muscled and fatter carcasses and lower bone pcrcentrge comparcd to klds ralsed on pasture. KEy WORDS Native gont Veriz Carcass Tissue Fecding Reginren
2013
On farm monitoring ofcentral highland goats were conducted in Sekota district of the Amhara regionalstate, Ethiopia to evaluate the growth performances under the traditionalmanagement practices. On farm feeding trial was also conducted to see thefeeding performances and carcass characteristics of Central Highland goattypes. Data used for the study was collected from randomly selected on-farmflocks for two years. Yearling bucks were assigned randomly in to two feedtypes: grazing only and grazing plus concentrate. The overall mean birthweight, weaning weight and yearling weight obtained were 2.01±0.03, 9.02±0.18and 20.61±0.74 kg, respectively. All the fixed effects considered weresignificantly affected birth weight and weaning weight. However, at yearling age,parity and type of birth were not significant. Kids from larger parity does,single born kids, male kids and kids born in the wet and cool season had higher(p<0.001) birth and weaning weights from their group. Male kids and kid...
Tropical Animal Health and Production, 2009
Data of 198 male Creole kids were analysed to assess the main non-genetic sources of variation of their meat abilities. Basal diet was composed of tropical pasture (28 days): in FD (forage diet), kids received no supplement; in group MD (mixed diet) they were offered 360 g/day pellet, while in group PD (pasture diet) kids were reared at pasture without supplementation. Given a regular four-month interval of weaning within the flock, fixed ages at slaughter (AS) were 7, 11 and 15 months. Three slaughter weights (SW) were compared 17-18, 21-22 and 25-26 kg. The growth levels before weaning and the season of birth effects were added in the statistical analysis. The use of MD has a significant (P<0.05) effect on almost all the body and carcass traits: 85% more ADG and carcass weight. The weights of fat tissues increased but represented only 4% of empty body weight. As expected, there were significant (P< 0.05) differences within the SW and AS classes that are discussed. Range of variations allow for suggesting further experiments or practical recommendations. The initial results: carcass yield (55%), conformation score (more than 3), fat cover score (less than 3), proportion of primal cuts (63%) or muscle/bone ratio (3-4 points) are a good incentive for the local sector.