Effect of sire breed (Southdown, Suffolk), sex, and growth path on carcass composition of crossbred lambs

Kirton, A. H.; Bennett, G. L.; Dobbie, J. L.; Mercer, G. J. K.; Duganzich, D. M.

doi:10.1080/00288233.1995.9513109

Cited by 15 publications

(8 citation statements)

References 14 publications

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“…Moreover, Matwos et al (2008) also reported that supplementation of Sidama goats has a positive effect on the weight of most edible offal components. Generally, nutritional status of the animals and BW affects the production efficiency of the offal (Kirton et al, 1995). Overall, in the present study, total edible offal components increased with increased concentrate allowance.…”

Section: Carcass Parameterssupporting

confidence: 50%

Bodyweight Change and CarcassYield Performance of Somali Goats Fed with Groundnut Pod Hulls and a Mixture of Wheat Branand Mustard Seed Cake

Worku¹,

Urge²

2014

Sci. Technol. Arts Res. J.

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Article InformationThe study was conducted at Kombolcha ATVET College, Eastern Ethiopia using 25 intact male yearling Somali goats weighing 18.4±1.5kg at the start of the experiment. The objectives of the study was to examine the effects of urea treated groundnut pod hulls and supplementation of wheat bran and mustard seed cake mixture at a ratio of 3:1, respectively at different levels on body weight change and carcass yield performance of Somali goats. A completely randomized block design was employed and the experimental animals were grouped in five blocks of five goats each based on their initial BW. The goats within a block were randomly assigned to one of the five diets. Treatment feeds consisted feeding of sole untreated groundnut pod hulls (UGNPH) (T1) adlibtum, sole urea treated (UTGNPH) (T2) adlibtum, and supplementation of the UGNPH with the concentrate mixture at graded levels of125g (T3), 250g (T4) and 375g DM/head/day (T5). Daily DM intake of UGNPH was higher (P<0.001) in T1 (407.1 g/head/day) and T3 (388.7g/head/day) compared to T4 (331.5 g/head day) and T5 (272.1 g/head/day), whereas that of UTGNPH was higher (P<0.001) for T2 (471.1 g/day/head) compared to all treatments. Total DM intake was higher (P<0.001) in supplemented groups (T3, T4, and T5) compared to non-supplemented groups (T1and T2). Goats fed sole UGNPH (T1) and UTGNH (T2) lost BW at a rate of 31 and 6 g per day, respectively, whereas supplemented goats gained BW at a rate of 18.9(T3), 40.7(T4), and 53.3g(T5)per day. Goats supplemented with concentrate had higher (P<0.001) weight of hot carcass and empty bodyweight (BW). Better dressing percentage was obtained (P<0.01) in supplemented and UTGNPH group on empty and slaughter BW basis. The result of this experiment demonstrated that urea treatment increased intake of groundnut pod hulls and decreased body weight loss as compared to the UGNPH. We recommend supplementation with 375g DM/day/head of the concentrate mixture to UGNPH based diet for small scale goat fattening programs, since neither UGNPH nor UTGNPH provided sufficient nutrients for growing goats.

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Section: Carcass Parameterssupporting

confidence: 50%

Bodyweight Change and CarcassYield Performance of Somali Goats Fed with Groundnut Pod Hulls and a Mixture of Wheat Branand Mustard Seed Cake

Worku¹,

Urge²

2014

Sci. Technol. Arts Res. J.

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“…However, the cited authors found that breed had an effect on kidney and pelvic fat deposition in agreement with our results. But Kirton, Bennett, Dobbie, Mercer, and Duganzich (1995) and Kirton, Carter, et al (1995) registered significant differences between breeds in studies involving about 15 different breeds. According to our results, Teixeira et al (1996) found differences between CGB, Suffolk and Merino breeds for subcutaneous fat and KKCF percentages, however no significant differences were found for the intermuscular and total fat percentages.…”

Section: Carcass Compositionmentioning

confidence: 99%

Breed and maturity effects on Churra Galega Bragançana and Suffolk lamb carcass characteristics: Killing-out proportion and composition

2006

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The aim of this work was to study the carcass killing-out proportions and carcass composition of Churra Galega Bragançana (CGB) and Suffolk sheep at 20%, 25%, 30% and 35% of maturity. Forty-eight male lambs were used, 24 CGB and 24 Suffolks from the BraganaÕs School of Agriculture sheep flock. Suffolk lambs had greater proportions of leg, shoulder and breast joints, but lower proportions of rib, anterior rib and neck joints. Increasing maturity caused a significant decrease in leg and shoulder proportions and an increase in chump proportion. Suffolk lambs had significantly greater muscle and significantly less subcutaneous fat and kidney and pelvic fat percentages than CGB lambs. With the increase of maturity, a significant increase in intermuscular fat and a significant decrease in bone proportion were observed. It was concluded that, under the management conditions of this work, Suffolks were preferred for meat production, since at a comparable stage of maturity they had greater proportions of expensive cuts and greater carcass lean percentage.

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“…It is well established that the fatness of lambs, in terms of carcass fat percent as well as fat depths, increases with increasing weight (Fourie et al 1970;Wood et al 1980;Black 1983), and that generally those lambs growing towards a higher mature weight will be less fat at any set weight because they are at a lower proportion of their mature weight (Kempster & Cuthbertson 1977;Wood et al 1980;Kirton et al 1995a). Factors responsible for variation in fatness between lambs of the same breed and sex, and of the same weight, however, are not so clear.…”

Section: Introductionmentioning

confidence: 99%

Effects of age at slaughter and sire genotype on fatness, muscularity, and the quality of meat from ram lambs born to Romney ewes

Purchas

Sobrinho

Garrick

et al. 2002

New Zealand Journal of Agricultural Research

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Ram lambs (n = 356) born to Romney ewes and sired by a range of straightbred or crossbred sires were evaluated for carcass composition and, for a subsample (n = 236), some meat quality characteristics over a period of 4 years. Within each year, 2 to 4 sire genotypes, including Romney controls, were evaluated at 2 slaughter ages (5-9 months and 10-11 months). Weight-adjusted carcass length was greater for lambs with some East Friesian or Finn genes, but no differences were found in dressing-out percent. At a constant carcass weight, carcass fatness (fat depths and leg dissectible fat) was lower in lambs with East

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Effect of sire breed (Southdown, Suffolk), sex, and growth path on carcass composition of crossbred lambs

Cited by 15 publications

References 14 publications

Bodyweight Change and CarcassYield Performance of Somali Goats Fed with Groundnut Pod Hulls and a Mixture of Wheat Branand Mustard Seed Cake

Bodyweight Change and CarcassYield Performance of Somali Goats Fed with Groundnut Pod Hulls and a Mixture of Wheat Branand Mustard Seed Cake

Breed and maturity effects on Churra Galega Bragançana and Suffolk lamb carcass characteristics: Killing-out proportion and composition

Effects of age at slaughter and sire genotype on fatness, muscularity, and the quality of meat from ram lambs born to Romney ewes

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