Evaluation of Egyptian sheep production systems: I. Breed crosses and management systems.

Almahdy, H.; Tess, M. W.; Eltawil, E. A.; Shehata, E. I.; Hussein, M. A.

doi:10.2527/2000.782283x

Cited by 10 publications

(9 citation statements)

References 16 publications

(18 reference statements)

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“…Accordingly, Jenkins (1986) reported that early-weaned lambs in an accelerated lambing system had higher feed efficiency but a longer period on feed than late-weaned lambs in an annual lambing system, resulting in higher feed costs for the early-weaned lambs. Almahdy et al (2000) also reported that greater overhead costs such as labor and feed offset gains in ewe productivity in accelerated lambing systems. In summary, weaning hair sheep lambs at 90 or 120 d of age instead of 63 d of age in an accelerated lambing system in the U.S. Virgin Islands can decrease the amount of expensive feed required and save producers between $6 and $15 per lamb without decreasing lamb growth or ewe productivity and fertility.…”

Section: Resultsmentioning

confidence: 99%

Effect of weaning age on hair sheep lamb and ewe production traits in an accelerated lambing system in the tropics1

Godfrey

Weis

2016

Journal of Animal Science

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This study was designed to evaluate the impact of weaning age on lamb and ewe productivity in an accelerated lambing system. St. Croix White (STX) and Dorper × St. Croix White (DRPX) lambs were assigned at birth based on breed, gender, and litter size to be weaned at 63 (Early-1; 106 lambs and 68 ewes) or 90 d of age (Late-1; 99 lambs and 60 ewes) in Exp.1 or at 63 (Early-2; 77 lambs and 57 ewes) or 120 d of age (Late-2; 75 lambs and 56 ewes) in Exp. 2. After weaning, lambs were weighed weekly and fed a concentrate ration (2% BW·lamb·d) while grazing guinea grass pastures. In Exp. 1, weaning weight was greater ( < 0.0001) for Late-1 lambs than for Early-1 lambs (14.6 ± 0.3 vs. 11.0 ± 0.3 kg, respectively) and greater ( < 0.008) for DRPX lambs than for STX lambs (13.9 ± 0.4 vs. 11.5 ± 0.4 kg, respectively). Litter weaning weight was greater ( < 0.004) for Late-1 ewes than for Early-1 ewes (20.9 ± 0.8 vs. 17.4 ± 0.8 kg, respectively). Ewe efficiency ([ewe BW at weaning/litter weaning weight] × 100) was greater ( < 0.004) for Late-1 ewes than for Early-1 ewes (50.7 ± 1.9 vs. 42.3 ± 1.8%, respectively). Lamb weight gain between 63 and 90 d of age was lower ( < 0.03) for Early-1 lambs than for Late-1 lambs (2.7 ± 0.2 vs. 3.6 ± 0.3 kg, respectively). In Exp. 2, weaning weight was greater ( < 0.0001) for Late-2 lambs than for Early-2 lambs (18.7 ± 0.4 vs. 11.8 ± 0.4 kg, respectively) and greater ( < 0.008) for DRPX lambs than for STX lambs (16.9 ± 0.5 vs. 13.3 ± 0.5 kg, respectively). Litter weaning weight was greater ( < 0.0001) in Late-2 ewes than in Early-2 ewes (27.2 ± 1.0 vs. 17.5 ± 0.9 kg, respectively). Ewe efficiency was greater ( < 0.0001) for Late-2 ewes than for Early-2 ewes (68.1 ± 2.2 vs. 41.9 ± 2.0%, respectively). Lamb weight gain between 63 and 120 d of age was not different ( > 0.06) between Early-2 and Late-2 lambs (5.1 ± 0.2 vs. 5.6 ± 0.3 kg, respectively). In Exp. 1 and 2, ewe BW at breeding and lambing and weaning and lambing rate were not different among weaning ages of lambs ( > 0.17). The Early-1 ewes exhibited estrus earlier than Late-1 ewes (10.9 ± 0.9 vs. 13.9 ± 1.0 d, respectively) but there was no difference ( > 0.63) between Early-2 and Late-2 ewes. Weaning hair lambs at 90 or 120 d of age can be done in an accelerated lambing system with no detrimental effect on lamb or ewe productivity. Late weaning resulted in a decreased number of days that lambs received high-cost, imported feed without a reduction in growth, resulting in savings of US$6 to $15 per lamb.

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Section: Resultsmentioning

confidence: 99%

Effect of weaning age on hair sheep lamb and ewe production traits in an accelerated lambing system in the tropics1

Godfrey

Weis

2016

Journal of Animal Science

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“…Such results confirm other studies carried out for evaluation similar crossbreds of Finn × Egyptian local breeds. In this respect, GALAL et al (1996) reported that the introduction of Finnsheep genetics did not improve the performance of the system, and ALMAHDY et al (2000) confirmed that genotype rankings changed depending on the measure of evaluation (i.e., biological efficiency or profit), when evaluation of the Egyptian same breeds and some other similar Finn crosses under sheep production systems.…”

Section: Reproductive Performance Of Ewe Lambsmentioning

confidence: 89%

“…Particularly, the crossbreds showed lower value in 2 lambings/3 years system (13.5 vs. 15.5 %) and higher value in 2 lambings/1 year system (13.9 vs. 12.9 %) than in the local breeds, when calculating the productive efficiency per one year by combining survivals ratio [that equals 1 − (mortality rate at 8 weeks)] and frequency of lambing per one year. ALMAHDY et al (2000) reported that profit for experimental flocks of the same genetic stocks in Egypt was 4 to 8 % greater in 3 matings/2 years system than in 1 mating/1 year system, except in [1/2 F 1/2 R (FR)] and inter se matings of [1/4 F 3/4 R (RFR)] for which the profit values were 42 and 6 % higher in 1 mating/1 year system than in 3 matings/2 years system.…”

Section: Reproductive Performance Of Ewe Lambsmentioning

confidence: 99%

“…From another point of view, in the studies on the mating systems, ALMAHDY et al (2000) found that the profit values for FR and RFR were 42 and 6 % higher in one mating per year (1M) than in three matings per 2 years (3M), while profit values for all other genetic types were 4 to 8 % greater in 3M than in 1M. The same authors concluded that genetic stocks should be matched to resources and management systems when evaluating life-cycle performance of flocks of O and R and their crosses with F in the two mating systems.…”

Section: Introductionmentioning

confidence: 99%

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Performance traits of purebred Ossimi and Rahmani lambs and their crosses with Finnsheep born under two accelerated mating systems

2009

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Abstract. The aim of the study was to carry out crossing of the local breeds with a known prolific breed with the hope to be a beginning to develop improved synthetic lines under the sub-tropical conditions. In the present study, the data represented 4 genotypes: 2 pure Egyptian local fat-tailed breeds [Ossimi (O) and Rahmani (R)], one back-cross [1/4 Finnish Landrace (F) 3/4 O] and one 3-breed-cross [1/4 F 1/4 O 1/2 R]. The lambs resulted from two accelerated systems: 3 lambings/2 years and 2 lambings/1 year. The results showed that in 3 lambings/2 years and 2 lambings/1 year systems, the crossbred lambs were significantly (P<0.01 or 0.05) higher in most of the growth traits, carcass characteristics and weight of ewe lambs at first mating, and were significantly (P<0.01) lower in percentages of the tail and bone and age of ewe lambs at first mating than in their maternal (local) breeds. Spring born lambs were significantly (P<0.01 or 0.05) higher than those born in the other seasons of the year in body weights at 16 and 24 weeks of age and daily gain weight during 0–<8 weeks in 3 lambings/2 years system, and in daily gain weight during the period 8–<16 weeks of age in 2 lambings/1 year system. When using some indices based on combining a number of economic traits of the study (including slaughter weight, feed efficiency, dressing percentage, percentage of lean in the carcass, conception rate, lambing rate and average litter size) to compare the crossbreds with the local ones, the obtained values were not in favour of the crossbreds, which may throw some shadows on feasibility of applying crossing of the Egyptian local sheep with the Finnsheep. Comparison between the two mating systems showed that the 3 matings/2 years surpassed the 2 matings/1 year system in all the indices developed. When calculating the productive efficiency per one year by combining the traits: survivals ratio – that equals: 1 − (mortality rate at 8 weeks) – and frequency of lambing per one year, the values were 15.0 and 13.2 % in the two systems, respectively, confirming the previous results.

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“…Secara umum peternakan domba di Indonesia masih difokuskan untuk menghasilkan daging. Siklus reproduksi relatif singkat, dan domba merupakan ternak yang lebih tahan terhadap berbagai penyakit (Almahdy et al, 2000;Lupton, 2008). Usaha domba di pedesaaan merupakan komponen yang sangat penting, karena dapat membantu perekonomian peternak, mudah dijadikan sumber uang pada saat dibutuhkan.…”

Section: Pendahuluanunclassified

Perbanyakan dan Penyebaran Bibit Ternak Domba Compass Agrinak Mendukung Perekonomian Peternak

Rusdiana

Adiati

2020

Jurnal Sain Peternakan Indonesia

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The study was to find out the propagation and distribution of Agrinak Compass sheep breeds supporting the economy of farmers. The research was conducted in Pandansari Village UPTD, Paguyangan District, Brebes Regency, Central Java in 2017. Research collaboration in the umbrella of the MoU, and its contents contained the rights and obligations of each party. Research collaboration for the development of agrinak Compass sheep is a seed that can be disseminated to farmers. There were 10 agrinak Compass sheep, 8 adult females and 2 adult males. Primary data and secondary data were then analyzed quantitatively, qualitatively and economically. The results showed that the body weight of young ewes was 71 ± 13 g / day. The body weight gain of 1 month old pre-weaned sheep was 145 ± 53g/head. The body weight of the sheep during pregnancy was 75 ± 29g /day. Capital expenditure and production costs incurred by the UPTD can generate profits of IDR 1.200.000.-/year, with B/C ratio of 1.2. The capital expenditure and production costs incurred by breeders can produce a yield of IDR 620.000,-/year with B/C value of 1.2. Economically, agrinak Compass sheep were suitable for multiplying and disseminated to farmers. The business of sheep owned by farmers was economically not feasible, because the main business of farmers were farming.

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Evaluation of Egyptian sheep production systems: I. Breed crosses and management systems.

Cited by 10 publications

References 16 publications

Effect of weaning age on hair sheep lamb and ewe production traits in an accelerated lambing system in the tropics1

Effect of weaning age on hair sheep lamb and ewe production traits in an accelerated lambing system in the tropics1

Performance traits of purebred Ossimi and Rahmani lambs and their crosses with Finnsheep born under two accelerated mating systems

Perbanyakan dan Penyebaran Bibit Ternak Domba Compass Agrinak Mendukung Perekonomian Peternak

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