Selection indexes for genetic improvement of yearling weight in Egyptian buffaloes

Shahin, Karima A.; Abdallah, Omar; Fooda, T. A.; Mourad, K. A.

doi:10.5194/aab-53-436-2010

Cited by 8 publications

(17 citation statements)

References 6 publications

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“…The pre-weaning and post-weaning growth rate of Nili-Ravi buffalo progeny were 316 and 301 g/day in Pakistan but those were much lower than our observed growth rate in both local and crossed buffalo progeny (Akhter et al, 2012) which might be the result of breed and management variations. But slightly agreed with the findings of Shahin et al (2010) mentioning 490 and 380 g for the mentioned periods in Egyptian local buffalo progenies. The significant difference of daily average growth rate in different years reflected the superiority of semen used in AI including slightly variation in the level of management, availability of good quality feed, temperature and humidity.…”

Section: Average Body Weight Gain Of Buffalo Progeny At Weaning and Ysupporting

confidence: 90%

“…Body weight variation ( Figure 1) and comparative study ( Figure 2) of those traits in both indigenous and crossbred buffaloes showed significant differences in both weaning (p <0.001) and yearling (p <0.05) stages. In Egyptian buffalo progeny (Shahin et al, 2010) the average body weights at six and twelve months were recorded as 114 and 179 kg, respectively. These results agreed with our findings for local buffalo.…”

Section: Methodsmentioning

confidence: 99%

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Study on growth traits at weaning and yearling stages of indigenous and F1 crossbred buffalo in Bangladesh

Shahjahan¹,

Khatun²,

Khatun³

et al. 2018

Asian J. Med. Biol. Res

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This study was planned to clarify the variation of body weight and average daily gain traits in both indigenous and F1 crossbreed (Local×Mediterranean) buffalo at weaning (sixth month) and yearling stages (twelfth month). Data were collected from 33 indigenous and 35 F1 crossbred buffalo progeny during the period of 2011 to 2014 with intensive management system at Research and Development farm of Lal Teer Livestock Limited in Bangladesh. The gathered data were analyzed using general linear model (GLM) and independent sample t test. The effect of parity, sex, season and breeding year on body weight and average daily gain were observed where significant values found in breeding period (p <0.01) of crossbred buffalo for body weight. It might be the reason of crossbreeding to indigenous buffalo cows using imported semen with better genetic merit. The parity (p <0.05), season (p <0.05) and breeding period (p <0.01) were also significant for average daily gain measurement which suggesting environmental adaptability beside additive genetic effects. Body weights were measured at weaning and yearling stages for both local (113 to 195 kg) and F1 crossbred (144 to 220 kg) buffalo progeny to screen the elite offspring for the Genetic Farm and Bull station. Similarly, average daily gain observed 469 to 457 g and 600 to 506 g at the previously mentioned two stages for both local and F1 buffalos, respectively. It was observed that studied traits were comparatively better in F1 buffalo progeny than indigenous. The comparison of average daily weight gains between indigenous and F1 buffalos at weaning and yearling periods showed significant differences for body weight (p <0.001) and average daily gain (p <0.05), respectively. It is concluded that genetic gain might be possible in local buffalo population by grading up process which could switch the traditional buffalo rearing to commercial level as well as meeting the nutritional demand of country people.

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Section: Average Body Weight Gain Of Buffalo Progeny At Weaning and Ysupporting

confidence: 90%

Section: Methodsmentioning

confidence: 99%

Study on growth traits at weaning and yearling stages of indigenous and F1 crossbred buffalo in Bangladesh

Shahjahan¹,

Khatun²,

Khatun³

et al. 2018

Asian J. Med. Biol. Res

View full text Add to dashboard Cite

show abstract

“…In Italy, the number of buffaloes has increased due to the demand for particular buffalo milk products and since the buffalo is progressively being acknowledged as dairy cattle (Borghese 2004). In Africa, especially in Egypt, buffaloes are being considered as predominant dairy cattle breed (Mourad & Khattab 2009), and male buffaloes are also being reared and fattened for meat production purposes (Shahin et al 2010).…”

Section: Introductionmentioning

confidence: 99%

Characterisation of carcass composition and meat quality of male suckling buffalo calves kept on natural grassland

2014

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Abstract. The aim of this observational study (field experiment) was to evaluate carcass composition and meat quality of male suckling buffalo calves. The animals were born between June and September 2011 and were kept on natural pasture in a cow/calf herd. From the end of November 2011, the suckling calves were fed only roughage as feed supplement in a feedlot until slaughter. For a generalised characterisation, the basic statistics of 18 male calves were calculated. The animals were slaughtered at an average live weight of 196.0 kg. Growth, live weight development and most carcass traits varied substantially between individual calves. The 12th rib muscle composition measured by computer tomography indicated comparable meat contents as evaluated by manual dissection of the carcass. Meat quality parameters (pH and colour) and the nutrient composition (protein, fat, ash) of longissimus muscle samples of calves were relatively similar. The intramuscular fat content of longissimus muscle was low, but shows a high variation between 0.3–1.1 %.

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“…Means and heritability estimates for body weight, shank length, keel length and breast girth at 2, 4 and 8 weeks of age and body weight at 10 and 12 weeks of age are presented in Table ( The values for BW w10 and BW w12 were 1673 and 1882 gm, respectively. were lower than the value of 1974 gm obtained on Pekin ducks at 8 weeks old by Shahin and Saleh (1997) and higher than the value of 1490 gm recorded on Khaki Campbell breed at 10 weeks old by Yakubu et al (2015). Difference of breeding and management between flocks would lead to difference in body weights at the same age for the same breed.…”

Section: Means and Heritabilitiesmentioning

confidence: 57%

Useful Repercussions on 10 and 12-Week Marketing Body Weights of Laying Ducks with Early Index Selection on Body Weights and Linear Measurements

Gouda

Ali

2017

Journal of Animal and Poultry Production

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The ultimate breeding objective considered in this paper was to raise the profitability of laying duck producers by offering them a tool to increase body weight whenever accepting the expected consequences in terms of increase in weight of eggs and decrease in their number. This could be achieved by ameliorating the marketing body weight of surplus ducklings, normally used as a source of meat production, using information on their body weight and some body linear measurements recorded at early stages of life. Three selection indices were derived from data on 576 birds hatched and reared at the governmental, El-Serw Waterfowl Research Station, belonging to Animal Production Research Institute, located in Damietta, Egypt. These data represent records of 291 Domyati and 285 Khaki Campbell birds progeny of 40 sires and 160 dams. The traits considered as sources of information in the indices were body weight (BW), shank length (SL), keel length (KL) and breast girth (BG) recorded at 2, 4 and 8 weeks of age. In constructing the three indices (I w2 , I w4 and I w8 at weeks 2, 4 and 8, resp.) the aggregate genotype included body weights at 10 (BW w10) and 12 (BW w12) weeks of age. Phenotypic and genetic parameters were estimated from a multitrait-animal model where breed and sex effects were considered as fixed and the additive direct genetic effects as random. The results pinpointed that early selection hinged on I w4 (involving BW w4 , SL w4 , KL w4 and BG w4) as juxtaposed to I w8 (including BW w8 , SL w8 , KL w8 and BG w8) had comparable accuracy (0.47 vs. 0.49, resp.), expected gain in BW w10 (14.4 gm and vs. 14.7 gm, resp.) and expected gain in BW w12 (9.7 gm vs. 10.1 gm, resp.). Thereupon, I w4 would be the best possible index envisaging earliness, accuracy and efficiency.

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Selection indexes for genetic improvement of yearling weight in Egyptian buffaloes

Cited by 8 publications

References 6 publications

Study on growth traits at weaning and yearling stages of indigenous and F1 crossbred buffalo in Bangladesh

Study on growth traits at weaning and yearling stages of indigenous and F1 crossbred buffalo in Bangladesh

Characterisation of carcass composition and meat quality of male suckling buffalo calves kept on natural grassland

Useful Repercussions on 10 and 12-Week Marketing Body Weights of Laying Ducks with Early Index Selection on Body Weights and Linear Measurements

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